A series of new Ni(II) poly-phosphinates have been synthesised using Ni(II) acetylacetonate as nickel precursor and a succession of ligands derived from phosphinic acid: ethyl-butyl-phosphinic acid, ethyl-butyl-thio-phosphinic acid, and respectively ethylbutyl-di-thio-phosphinic acid. Chemical analysis gel-chromatography, infrared spectroscopy (IR), spin electronic resonance (RES), X-ray diffraction (XRD), thermal gravimetric analysis (TGA), electrical resistance measurements at different temper...
Autori: Daniel Sutiman, Doina Sibiescu, , Mircea Teodor Nechita
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25118

An attempt has been made to develop Water Quality Index (WQI), using six water quality parameters at riverside stations located in the vicinity of temples of Dakshina Kannada district, Karnataka, South India. Rating curves were drawn based on the tolerance limits of inland waters and health point of view. Bhargava WQI method and Harmonic Mean WQI method were used to find overall WQI along the stretch of the river basin. Five point rating scale was used to classify water quality in each of the st...
Autori: Santosh M. Avvannavar, Surathkal Shrihari
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25119

Iinclude urmatoarele articole:� Process water of papermaking: model building and characterization� Landfill inventory in the Republic of Moldova: problems and solutions� Floodplain revegetation and river basin restoration� Environmental problems of copper complex in Bor area� Researches on air micro flora determination from public indoor spaces and hospital wards in an urban area� Current practice of solid waste management in Malaysia and its disposal� An assessment of potential he...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25199

Actual trends in papermaking concern on the use of recycled fibers and minimizing effluent volume by closing water circuit. Beside environmental and economic advantages, both trends can lead to serious problems in papermaking processes due to contaminants introduced with recycled fibers and their accumulation in closed water system. A key factor to avoid disturbances in the papermaking is to prevent the accumulation of detrimental compounds. In this respect, first it is necessary to find out met...
Autori: Dan Belosinschi, Elena Bobu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25134

AbsractThe paper highlights the inventory of landfill, focusing on the feasibility study of solid waste disposal sites inventory in the Republic of Moldova and existing situation in waste management, including landfills analysis. The paper contains relevant information on landfills characteristics, their location and description of disposed waste. Technical assistance for the study was provided by the regional project Capacity building for improving the quality of greenhouse gas inventories (Eur...
Autori: Tatiana Tugui
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25135

AbstractThe paper describes the synthesis and characterization of layered double hydroxides (LDH) intercalated with 4,6-dinitro-o-cresol(DNOC) and 2,6-dichlorobenzonitrile (2,6DBN) by anionic exchange method. The incorporation of the organic pesticides in the structure of layered double hydroxides can offer premises to increase the pesticide active life by reducing its volatilization, controlling the release of the pesticide from the layered structure and decreasing the pesticide adsorption in s...
Autori: Gabriela Lisa, Marcel Ionel Popa, Mihaela Frunza
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25144

AbstractLead is unique among the toxic air contaminants that the World Health Organization (WHO) has identified it in several ways. Lead concentration is increasing rapidly in the environment due to increased use in anthropic activity. Lead is released into the atmosphere from metallurgy and siderurgy industry, during coal burning, oil or wastes, from power plants which use solid fuel, from traffic and the building sites. Regardless the exposure mode, the presence of lead in urban air, even in r...
Autori: Alina Murariu, Aurelia Meghea, Aurelian Stanescu, Ioana Lacatusu, Mihaela Mihai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25205

The amperometric response in dynamic or fixed potential conditions, as cyclic voltammetry (CV) and chronoamperometry (CA) of a copper oxide-copper electrode was studied and proposed for the fast characterization of the simulated wastewaters containing acetylsalicylic acid (ASA) and sulfur compounds, i.e., thioacetamide (TA) as organic pollutant models. The additivity of the individual amperometric signals in the overall response of the electrode for mixed solutions corresponded to over 95% recov...
Autori: Aniela Pop, Ciprian Radovan, Florica Manea, Georgeta Burtica, Ilie Vlaicu, Joop Schoonman, Marcel Morariu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25158

Contain all the articles from this issueICEEM /01 PLENARY CONFERENCETen years of Environmental Engineering and Management education and research at the Technical University of IasiMatei Macoveanu, Carmen Teodosiu ICEEM/01  - Environmental Engineering SectionRemoval of nitrogen oxides from Diesel exhaust: Laboratory studies for development of an SCR-catalyst-system using solid urea as reducing agentWerner Weisweiler High temperature desulphurization of hydrogen sulphide containing ...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25167

Contain all the articles from this issueICEEM /02 PLENARY SESSION:"Environmental Engineering and Management in the Context of Sustainable Development"Design for sustainability (D4S): towards advanced product conceptsHan Brezet, Sacha SilvesterICEEM/02 - ENVIRONMENTAL ENGINEERING SECTION"Water and Wastewater Treatment Technologies"Complex approach to the problem of persistent organic pollutants degradation in water environmentVictor Covaliov, Olga Covaliova, Angela Cincilei, Gilles Mailhot, Pasca...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25176

Contain all the articles from this issueICEEM /02 PLENARY SESSION:"Environmental Engineering and Management in the Context of Sustainable Development"Green technology foresight of high technology: Hype of potentials - The challenges from nanotechnology, Biotechnology and ICTMichael S?¸gaard J?¸rgensenIntrinsic properties of noble metals in catalytic selective reduction of NO by propene in lean burn conditionsAnne Giroir-Fendler, Helleh Saadallah, Adela HaletaICEEM/02 - ENVIRONMENTAL ENGINEERING ...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25178

Contain all the articles from this issueICEEM/02 - ENVIRONMENTAL ENGINEERING SECTION"Treatment Technologies for Gaseous Fluxes"Surface chemistry studies on molybdena–alumina catalystTatiana Yuzhakova, ?kos R?Šdey, Endre Domokos, J??zsef Kov??cs, Monica Caldararu, Cristian Hornoiu, Mariana Carata, G.Postole, Cornel Munteanu, Larisa Strukova, Jozse FazakasHebicidal behaviour of a new N,N'- biquaternary salt of 4,4'- bipyridineServilia Oancea, Marinela Irimia, Gabriela Carja, Anton Airinei, Nicu...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25189

Iinclude urmatoarele articole:â€? Phenol degradation in water through a heterogeneous photo-fenton processâ€? Study concerning the influence of oxidizing agents on heterogeneous photocatalytic degradation of persistent organic pollutantsâ€? Nonmarket valuation of acequias: Stakeholder analysisâ€? Metals concentration in soils adjacent to waste depositsâ€? Polyelectrolyte - surfactant complexesâ€? Modelling of sorption equilibrium of Cr(vi) on isomorphic substituted Mg/Zn-Al - type hydrotalcitesâ...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25206

Include urmatoarele articole:� Cost sensitivity analysis by Monte Carlo simulation� Mathematical modeling of gas drying by adsorption� Methyl isobutyl ketone combustion over Pt/Al2O3 catalyst� Distribution of oxygen transfer rate in stirred bioreactors with simulated broths� Unsteady heat transfer inside an elliptic cylinder� Triphasic external-loop airlift reactors. Hydrodynamic and dispersion studies� Sustainable combined utilization of renewable forest resources and coal in Roma...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25209

AbstractThe formation of the polyelectrolyte- surfactant complexes has been studied. On this purpose has been measured the critical micelle concentration for every polyelectrolyte and surfactant which had been used. The phase behaviour of mixtures of a cationic polyelectrolyte (Praestol 611) and an anionic surfactant (sodium lauryl sulphate - SLS) has been studied. For a given polyelectrolyte concentration, with increasing surfactant concentration, three phase regions were identified. The first ...
Autori: Cristina Costache, Gabriel Dabija, Mihaela Mihai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25214

AbstractThe aim of this work was to obtain Ag - doped zeolite as antibacterial material using natural and sodium form of zeolite from Mirsid Romania with the dimensions ranged between 0.8-1.2 mm. The comparative structural characterization of natural and Ag - doped zeolite were performed using Laser Induced Breakdown Spectroscopy (LIBS), X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM), and Infrared Spectroscopy (IR). In addition, the ion exchange total ...
Autori: Aurel Iovi, Corina Orha, Cornelia Ratiu, Florica Manea, Georgeta Burtica
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25220

AbstractThe perovskite structure was synthesized by sol-gel method type citrate. Three perovskite LaMnO3 samples were obtained after calcination and were characterized by XRD, XPS and TPR. The catalytic testing was carried out in SCR-HC equipment (HC=C3H6 and C3H6 respectively) in presence and also in absence of oxygen atmosphere. The results pointed out a good activity in NOx reduction but only in oxygen absence. As it was expecting, LaMnO3 perovskite has shown a good activity for hydrocarbons ...
Autori: Helmut Papp, Ion Balasanian, Liliana-Mihaela Chirilă, Wladimir Suprun
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25222

AbstractThis paper discusses the applications of synthetic PONILIT GT-2 anionic polyelectrolyte as soil conditioning agent into a site with high electric field around. All experimental data conclude that the use of a polymeric conditioning agent was increased the soil ability to support vegetation expressed as germination degree for some grass species (e.g., Raigras aristat). The performed values for germination degree increase from 3.05 % to 12.20 % when was added fertilized soil, and respectiv...
Autori: Carmen Zaharia, Ioan Ivanov Dospinescu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25225

AbstractPolycyclic aromatic hydrocarbons (PAHs) and organochlorine pesticides (OCPs) contamination levels were determined in the water samples of Danube river (two sites in Romanian area), of one Romanian spring water (Pelisor), in tap water (from Constantza and from Borovetz) and sea water (the Black Sea and the Mediteranean Sea). These levels were compared to those available for other surface waters. The studied water samples were analyzed by gas chromatography with mass spectrometer detector ...
Autori: Alina Soceanu, , Simona Dobrinas, Valentina Coatu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25237

AbstractAn assessment of acide drainage forming potential for a mining waste material resulted in a former mine of nonferrous and precious metals ore has been made. The waste material has the following contents: 2,20?ˇ2,28% sulphide sulphur, 2,53?ˇ2,58% Fe, 0,07% Cu, 0,05% Zn, 0,36?ˇ0,40% Pb, 0,008?ˇ0,013% Ca and 3,85?ˇ7,97% sulphate. Bacterial leaching tests in percolating columns during 380 days have been made. The leaching liquor has been recirculated at a liquid:solid ratio of 1L:1kg. After ...
Autori: Vasile Oros
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25239

AbstractThis paper presents an overview of research related to use of surfactant modified natural zeolites (SMZ) in water and wastewater treatment. The most common natural zeolite, widely used as starting material is clinoptilolite, but other natural zeolites have also been used (chabasite, heulandite, mordenite). In the first part, the preparation methods and the influence of process parameters on the final product properties is reviewed. The discussion is focused on the influence of surfactant...
Autori: , Cezar Catrinescu, Roxana Elena Apreutesei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25241

AbstractThe crystallization of ferrierite/ZSM-35 zeolite at 180 Âą 50C in the presence of ethylenediamine as a structure-directing agent from reaction mixtures containing various active NaOH/SiO2 ratios has been studied. X-ray diffraction, scanning electron microscopy, TG/DTG/DSC analysis, nitrogen sorption measurements and temperature-programmed ammonia desorption were used to characterize the ferrierite/ZSM-35 solids. The XRD data reveal that the samples synthesized in optimized conditions are...
Autori: Ioana Droahna, Iuliean Asaftei, Nicolae Bilba
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25251

AbstractEquilibrium and kinetic studies regarding the sorption of the copper phtalocyanine dye Alcian Blue 8 GX were carried-out within batch experiments. The sorption equilibrium revealed that the pure natural clay can uptake up to 18 mg of Alcian Blue 8 GX per 1 g mass of clay. The cationic dye sorption was best fitted by Freundlich model that is applicable to sorption on heterogeneous surfaces (surfaces with non-equivalent energetic sites). The pseudo-second order kinetic model may be efficie...
Autori: , Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25257

AbstractA comprehensive characterization of fly ash from Iasi, Romania has been carried out in order to set up the utilization potential of fly ash resulting in appreciable amounts from thermal power plants as a waste, which leads to soil and groundwater contamination, as well as atmospheric pollution. This fly ash can be classified on the base chemical and technological properties in F class. Having in mind the assignment of the processing conditions, the fly ash can be used as sorbent for poll...
Autori: , Maria Harja, Marinela Bărbuţă, Nicolae Apostolescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25259

AbstractThe purpose of this paper was to quantify the environmental impact and risk applying a new integrated method designed as a soft SAB. The evaluation of impact and risk induced in environment was performed for surface  waters (Bahlui River, IaÂ?i), considering the presence of some minerals and heavy metals in surface water in high concentrations. The new method for integrated environmental impact and risk assessment that considers the pollutants concentration levels in surface water w...
Autori: Brindusa Robu, Dumitru Bulgariu, Laura Bulgariu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25262

AbstractMesoporous Ti-SBA-15 materials have been synthesized up to a Si/Ti ratio of 20 using a two-step pH adjusting method. Low angle X-ray diffraction and diffuse reflectance UV-Vis spectroscopy revealed that the optimal pH value to synthesize highly ordered mesoporous solids having Ti atoms primarily in tetrahedral coordination environments is around 7.5. The nitrogen physisorption and TEM indicated also ordered mesostructures having relatively large surface areas and uniform mesopore size di...
Autori: Adrian Ungureanu, Alexandru Chirieac, Brindusa Dragoi, Cezar Catrinescu, Emil Dumitriu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25263

? Denitrifying activity of activated sludge in suspension and in biofilm? Denitrifying potential of an activated sludge derived consortium? Biosorption of hexavalent chromium based on modified Y zeolites obtained by alkali-treatment? Identifying anaerobic digestion models using simultaneous batch experiments? Olive mill wastewater as a renewable resource? Influence of innoculum acclimation in the biodegradation rate and estimated biodegradbility of cow manure, food waste and oil? Studies on the ...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25378

AbstractSoil pollution causes significant damage to the environment and human health as a result of their mobilities and solubilities.Significant progress has been made in regulating soil pollution, with a parallel development of methodologies for soil assessmentand remediation. The selection of the most appropriate soil and sediment remediation method depend on site characteristics, concentration, type of pollutants to be removed, and the end use of the contaminated medium. The approach include...
Autori: Attar Singh Sheoran, Poonia Poonam, Vimla Sheoran
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25291

AbstractThe aim of this work was to study the content of Fe, Mn, Zn and Pb in the mixtures which contain volatile oil between othercomponents, obtained after the Soxhlet extraction or maceration of the samples (different organs of garden flowers - blue hyacinthand chrysanthemum). The blue hyacinth is a bulbous perennial herb in the Lilliaceae family, grown for its showy and fragrantspringtime flower display. Garden chrysanthemums are tender perennials in the Asteraceae family in double-flowered ...
Autori: , Simona Dobrinas, Viorica Popescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25294

AbstractThe use of composite fuels using pitcoal and sawdust represents a high perspective. The paper deals with the experimental results focusing on the combustion efficiency of composite fuel briquettes and on the polluting emissions level. A special care is given to the determination of boiler efficiency and to the establishment of exploiting economic conditions, like the supply, cleaning etc. The research of the combustion of pitcoal-wood biomass briquettes is conducted on a 55 kW boiler.A n...
Autori: Gabriel Negreanu, Gheorghe Lăzăroiu, Ion Oprea, Ionel Pisa, Lucian Mihăescu, Radu Indries, Tudor Prisecaru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25301

AbstractA greenhouse experiment was conducted to determine the phytotoxic effect of heavy metals such as Cd, Cu, Ni, Pb and Zn on the growth of Sunflower (Helianthus annuus): on the seed germination, root/shoot growth and uptake of metals in soil-vermicompost media. The selected metals were dosed at various concentrations ranging from 0, 5, 10, 20, 40 and 50 ppm separately in soil - vermicompost media (3:1) in pot experiment. The seed germination, root and shoot growth were found significantly a...
Autori: Chhotu D. Jadia, Madhusudan H. Fulekar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25306

AbstractWood-based epoxy resin was synthesized from resorcinol-liquefied wood. First, wood components were depolymerized and liquefied by reaction with resorcinol. The resorcinol-liquefied wood with plenty of hydroxyl groups could be considered as a precursor for synthesizing wood-based epoxy resin. Namely, the phenolic-OH groups of the liquefied wood reacted with epichlorohydrine under alkali condition. By the glycidyl etherification, epoxy functionality was introduced to the liquefied wood. Th...
Autori: Akira Fujita, Hajime Kishi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25310

Include urmatoarele articole:� Biomass - A source of chemicals and energy for sustainable development � Equilibrium study of Pb(II) and Hg(II) sorption from aqueous solutions by moss peat� Wood-based epoxy resins and the ramie fiber reinforced composites� Studies on the interaction between birch veneer and compounds with biocide potential action� Effect of methanogenic inhibitors, inocula type, and temperature on biohydrogen production from food components� Energy from biomass in pul...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25313

AbstractThe aim of this paper was to accurately analyze the sources of water pollution and loading concentrations in textile finishing mills. A process data collection was performed and integrated with a characterization of the process effluents in terms of treatability and reusability. In order to evaluate properly the wastewater loading, an analysis course was set. The samples have been gathered for two months; instantaneous samples (PI) were drawn from the wastewater, as well as from the pain...
Autori: Irina-Isabella Savin, Romen Butnaru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25314

AbstractThe present article deals with the study of the quality of the soils in the Cordun area – the waste dump. This refers to the characteristics of the analyzed location site (geomorphological, geological considerations, the pedological and agrochemical characterization of the soils in the area outside the plant), but also to the establishment of the pollution rate in the location site (experimenata data, results and debates). The conclusion of the present article is that the analyzed area...
Autori: Elena Doinita Carlig, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25315

- Artificial intelligence applications in the atmospheric environment: status and future trends- Kernel methods and neural networks for water resources management- Environmental decision support systems based on models and model-based reasoning- Towards an intelligent tutoring system for environmental decision makers- SBC-MEDIU: A multi-expert system for environmental diagnosis- Fast and accurate residential fire detection using wireless sensor networks- Validation of a knowledge-based risk mode...
Autori: http://www.ecozone.ro/reviste.php?RID=25377

AbstractIn the present work, composite membranes were developed for separation of hydrogen from its mixtures with other gases. The composite membranes were characterized by single gas permeation and scanning electron microscopy. Gas transport properties have been determined for four gases (H2, CH4, N2, CO2). The influence of cross-linking on transport was measured. H2/CH4 selectivity values up to 115 were obtained. The resulting membranes have a selectivity of H2/CH4 close to intrinsic selectivi...
Autori: Carmen Nistor, Marcel Popa, Sergey Shishatskiy, Suzana Pereira Nunes
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25339

Include urmatoarele articole:� Composite membranes with cross-linked matrimid selective layer for gas separation� Determination of organic compounds from different types of coffee by Hplc and Gc-Ecd analysis� An integrated assessment of the suitability of domestic solar still as a viable safe water technology for India� Investigations on the possibility of natural hemp fibers use for Zn(II) ions removal from wastewaters� Removal of acid red 398 dye from aqueous solutions by coagulation...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25340

AbstractSolid waste management problems proved to be complex in origin and in solution. The rapid economic development and population growth experienced by the State of Penang, Malaysia have resulted in a tremendous increase in the quantities and types of solid wastes generated. Domestic solid waste is the most visible consequence of this economic development. However, considerable amounts of this waste could be recycled and reutilized if separated. This paper reviews the current status of solid...
Autori: Abdelnaser Omran, Abdelsalam O. El-Amrouni, Abdul Hamid Pakir, , Latifa K. Suliman, Mahyuddin Ramli
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25353

AbstractChemical sensors utilizing immobilized enzymes and proteins are important for monitoring chemical processes and biological systems. Glucose oxidase (GOx) from Aspergillum Niger is a flavoenzyme that has been used to determine glucose. Among the conventional methods of enzyme deposition the main strategy consists in its entrapment in an inert matrix adsorbed on the electrode surface. We report here the synthesis and physical – chemical characterization of a new bionanocomposites obtaine...
Autori: , Gabriela Ciobanu, Ion Balasanian, Simona Ratoi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25359

AbstractHigh proton conductivity of CsHSO4 opened new opportunities for applications as electrolyte in solid acid fuel cells (SAFC). Relatively recent, it was proved that the accommodation of this solid electrolyte by silica supports improves its proton conductivity. During this work, solid acid CsHSO4 and its composites with mesoporous silica of SBA-15 and MCF-types as host materials were synthesized and studied for the first time. Studies were mainly focused on the influence of mesoporous supp...
Autori: Adrian Ungureanu, Brindusa Dragoi, Emil Dumitriu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25366

Include urmatoarele articole:� CsHSO4/mesoporous silica composites - new electrolytes for solid acid fuel cells� Trend in exhaust emissions from in-use gasoline vehicles� Analysis of distribution of oxygen transfer rate in stirred bioreactors for bacterial broths� Electrochemical characteristics of Ti6Al7Nb alloy in Ringer's solution� Pulsed high voltage discharge technology as a new method for killing Hepatitis C virus (HCV) cells� Hydrodynamic modelling of pollution with LNAPL gene...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25367

Include urmatoarele articole:� Environmental Engineering and Management Journal, Vol. 8 Nr. 2� Bioengineering aspects of tissues culture bioreactors for medicine and environmental applications� Removal of bis (1-chloro-2-propyl) ether from wastewater using sonodegradation and biodegradation� A novel plasma reactor for toluene decomposition in contaminated air flow� Study of the copper (II) removal from aqueous solutions by chelating resin Purolite S930 � Analysis of some metal levels...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25371

â€? Bioremediation of contaminated air using a bioscrubberâ€? Quality risk evaluation of the groundwater resources on the moldavian areaâ€? Electrochemical characterization of some dental materials in accelerated environmental testingâ€? Preliminary study of simple and Fenton oxidation with hydrogen peroxide applied on final effluents from a zootechnical farmâ€? The environmental impact assessment caused by the dykes failureâ€? Revaluation of beer industry byproducts – medical implicationsâ€? ...
Autori: http://www.ecozone.ro/reviste.php?RID=25372

â€? Photocatalytic properties of titania - fly ash thin filmsâ€? Study of the viscosity of some biodiesel – diesel oil blendsâ€? Aspects refering to technical and leaching properties of the secondary aluminium slags - cement compositesâ€? Studies regarding phenol and 4-chlorophenol sorption by surfactant modified zeolitesâ€? Cu-Ni nanostructured electrocatalysts obtained by electrocodepositionâ€? Molecularly imprinted poly (vinyl alcohol) films for the selective absorption of glycyrrhizinic ac...
Autori: http://www.ecozone.ro/reviste.php?RID=25373

â€? Photocatalytic properties of titania - fly ash thin filmsâ€? Study of the viscosity of some biodiesel – diesel oil blendsâ€? Aspects refering to technical and leaching properties of the secondary aluminium slags - cement compositesâ€? Studies regarding phenol and 4-chlorophenol sorption by surfactant modified zeolitesâ€? Cu-Ni nanostructured electrocatalysts obtained by electrocodepositionâ€? Molecularly imprinted poly (vinyl alcohol) films for the selective absorption of glycyrrhizinic ac...
Autori: http://www.ecozone.ro/reviste.php?RID=25374

� Physiological changes in seedling germination and growth plant under chemical stress conditions� Studies on sorption and transport processes of cadmium in soils� Assessment of the anthropogenic impact on water systems by fluorescence spectroscopy� Research on the effects of soil improvement by fertilization on the quality of winter wheat� Halotherapy: From ethnoscience to scientific explanations� Study regarding the sorption of erythrosine from aqueous solution onto soil� Hydroxy...
Autori:
ISSN: 1582 - 9596
http://www.ecozone.ro/reviste.php?RID=25375

AbstractEquilibrium data of water vapor adsorption from wet air on several materials were experimentally determined at temperature values of 313 and 333 K and air relative humidity values ranged between 30 and 90 %. Experimental data were correlated with Langmuir and Freundlich models. The obtained results emphasize the significant difference between the water retained on the adsorbent materials impregnated with various salt solutions, and on classic adsorbents....
Autori: Ioan Mămăligă, Constantin Baciu, Stelian Petrescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25394

Abstract The efficiency of Cd (II) removal from aqueous solutions was investigated using Sphagnum moss peat as sorbent. A 23 orthogonal central composite design was successfully employed for experimental design and analysis of results. The combined effect of the initial solution pH, peat dosage and initial Cd (II) concentration was studied and optimized using Response Surface Methodology (RSM). The optimum values of these variables were found to be pH = 4.72, 14.7 g peat /L and 13.64 mg Cd /L, ...
Autori: Catalin Balan, Corneliu Cojocaru, Petru Bulai, Doina Bilba, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25399

Abstract The concentrations of some metallic ions (chromium, iron and copper) in Danube River water were determined by molecular absorption spectroscopy. There were studied five sites from Constanta County, in winter, spring and summer of 2008 year. The results can be interpreted having in view the natural and anthropical factors. The highest concentrations of metallic ions, which proved that some of water samples are of 5th quality class, were determined in winter. The quality of Danube Rive...
Autori: Anca Dumbrava,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25400

Abstract The preparation of microspheres containing chitosan, sodium alginate and ibuprofen and the pH dependent drug release were investigated. The microspheres were prepared by two experimental routes: the first one starting with a chitosan/ibuprofen core subsequently coated by an alginate shell (S1) and the second one based on an alginate/ibuprofen core, later coated by a chitosan layer (S2). The physical-chemical characterization was done by using Dynamic Light Scattering (DLS), Atomic Fo...
Autori: Luminiţa Elena Balău, Nicolae Aelenei, Marcel Ionel Popa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25412

Abstract Study of geopolymer is a developing field of research for capitalizing solid waste and by-products in the view of new materials achievement having characteristics necessary for using as cement substitute. Also, it provides a solution to many problems regarding environment, such as reduction of gaseous emissions and particles matter resulted from cement industry and raw materials economy. In this paper, the experimental conditions for obtaining new materials on the basis of fly ash f...
Autori: Maria Harja, , Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25419

Abstract Transition to a more sustainable economy and the consequences of the Kyoto protocol on global climate change, includes a shift of feedstock for energy and chemical industries from fossil fuels and petrochemicals to renewable resources. The use of vegetal fibers as major source of renewable resources represents a valuable alternative both from economical and environmental points of view. Traditionally, vegetal fibers are widely used in textile industry, paper manufacture, and packagin...
Autori: Dan Gavrilescu, Bogdan Marian Tofanica, Adrian Catalin Puitel, Puiu Petrea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25431

Abstract The aim of this study is to investigate the electrochemical behavior of a three casting non-precious dental alloys: Vera PDI (Co-Cr based), Heraenium (Ni-Cr based) and NPG+2 (Cu-Al based) three test solutions: artificial saliva (AFNOR, pH = 8), acidified saliva (pH = 2.5) and fluoridated acidified saliva (1000 ppm F-, pH = 2.5). Open circuit potential (EOC) measurement; potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS) are the electrochemical proce...
Autori: Daniel Mareci, Daniel Sutiman, Adrian Cailean, Julia Claudia Mirza Rosca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25435

Abstract Literature data show that in general, plastics produced through the mechanical recycling route involve less carbon dioxide emission than when produced from crude oil. A review of readily available data shows that road transport of untreated waste plastics account for a significant portion of the carbon dioxide emission generated during recycling. Therefore, much carbon dioxide emission can be saved by optimizing the logistics in the recycling of plastics. On the example of polyolefi...
Autori: Peter C. Rem, Stig Olsen, Jan-Henk Welink, Norbert Fraunholcz
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25442

Abstract The synergistic combination of polymers and inorganic compounds via sol-gel process has attracted great attention, by manipulating structure at molecular level, for developing new materials with desired properties. These new hybrid materials could have a controllable combination of the benefits of polymers (flexibility, toughness, ease of processing) and those of ceramics or glasses (hardness, durability, thermal stability). The microstructures and the properties of hybrid materials...
Autori: Lucia Dumitrescu, Ileana Manciulea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25446

Abstract At present, dangerous industrial wastes are a main source of environmental pollution because they are stored and deposited improperly. Besides, dangerous industrial wastes could also be a source of secondary raw materials which are not well capitalized. This fact causes substantial losses of secondary raw materials and energy and it is explained by the lack of certain technologies of treatment, capitalization and final removal that are technically and economically sustainable. To ide...
Autori: Neculai Mihailescu, Vasilica Daescu, Elena Holban, Mariana Nicoleta Badea, Jenica Paceagiu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25447

Abstract The waste recycling done in order to obtain composite products with performant properties and also, with long life cycle is the main purpose for the sustainable development. The present paper describes the way in which, different kind of solid wastes are immobilised in an organic resin as a binder matrix. Composites with different proportion of waste as, rubber/plastic, glass and silica sand have been obtained. The physical-mechanical properties and chemical stability of such organic...
Autori: Ioan Ropota, Emilia Zamfirache, Marcela Muntean
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25450

Abstract The methods generally used for developing these studies are the assessment and investigation. Assessment – all methods used for measuring, reckoning, modeling, forecasting or estimating the presence of a pollutant in the environment. Investigation - the process of identifying the presence of pollutants in the environment, the spatial dispersion of these pollutants, the level of their concentration, as well as the analysis of the environment’s structure. The steps that were follow...
Autori: , Gheorghe - Viorel Cosara, Calin Baciu, Ileana - Codruta Stezar, Augusta - Diana Crisan, Camelia Costan, Cristina Modoi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25451

Abstract The flotation tailing pond Bozinta is located at 5 Km West from Baia Mare town. It is closed and is preparing for ecological reclaiming. Preliminary investigations have been made on the meteorological and climatologic indicators of the site. The temperature, air relative humidity, the wind speed, the rain values and the soil temperature have been measured during the vegetation period of 2008 year. The air temperature on the tailing pond is always 1?ˇ2 0C higher than the values regist...
Autori: Vasile Oros, Mirela Coman, Monica Marian, Leonard G. Mihaly, Anca Mihaly
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25452

Abstract It's well known the degradation of many Romanian (including Dobrogea) soils, both in hill and in plain environments, due to the increasing anthropic pressure on natural resources. Soil erosion and organic matter loss are recognized as the main processes responsible of such degradation and of the rising risk of desertification, to which land use changes and politics for agriculture not suitable for land specificities often contribute. The knowledge of land use impact on soil quality i...
Autori: Marioara Nicolaescu, Naliana Lupascu,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25453

Abstract In designing an efficient photovoltaic system, the meteorological data of the system location must be considered. Field data registered over years prove the importance of the implementation site characteristics in the design and optimal exploitation of a PV system, because wetting and atmospheric gaseous and particulate pollution can strongly distort the incident solar radiation. Thus, in addition to the efficiency of the solar module, the tracking efficiency, the clouds crossing fac...
Autori: Dorin Valentin Diaconescu, , Ioana Sinziana Hermenean, Maria Monica Vatasescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25464

Abstract Increasing the solar energy conversion into electrical or thermal energy represents an European and national priority, because it offers clean alternatives to the use of fossil fuels, in no pollutant systems, based on photovoltaic modules and solar collectors. The global solar radiation is the most important factor affecting the amount of energy produced by a PV module. In direct connection with the change in the solar energy conversion, the TR - Loss Coefficient (Tr??bungsfaktor) is...
Autori: , Dorin Valentin Diaconescu, Maria Valentina Dinicu (Popa), Bogdan Gabriel Burduhos
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25465

Abstract This paper aims to present an assessment of Olt River water quality along Brasov county area, using data acquired during 2005- 2007. Olt River is an important river in Romania, and its basin is covering almost 10 counties, which main part of its middle section passes Brasov County. Olt River is providing water for industry, agriculture and human use, but is also collecting treated and not treated wastewaters from different sources. Two important sampling sites were studied: Feldioar...
Autori: Mihaela Sica, Dorina Dragan, Ramona Furnica, Camelia Draghici,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25467

Abstract Two types of zeolite-modified electrodes, e.g., Ag-doped zeolite-expanded graphite-epoxy (AgZEG) and Cu-doped zeoliteexpanded graphite-epoxy (CuZEG) composite electrodes were tested for the application of the electrochemical determination of 4-aminophenol (4-AP). The electrochemical techniques used for the electrochemical determination of 4-AP were cyclic voltammetry (CV) and chronoamperometry (CA). Some aspects related to the mechanistic behaviour are discussed. The electrochemical ...
Autori: Cornelia Ratiu, Carmen Lazau, Corina Orha, Ioan Grozescu, Aniela Pop, Daniela Sonea, Florica Manea, Georgeta Burtica, Joop Schoonman
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25468

Abstract A crucial stage which makes the other directions of development of membrane processes is getting new membrane materials, to meet increasingly stringent of selectivity and productivity. Polyetheretherketone shows high stability against chemical and physical agents but is poorly soluble in most common solvents. Present studies on obtaining the support of the polyetheretherketone membranes were limited by: solubility of polyetheretherketone in concentrated sulfuric acid and fast speed a...
Autori: Mihaela Emanuela Craciun, Aurelia Cristina Nechifor, Florin Aldea, Gheorghe Nechifor
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25475

Abstract Corrosion control, using inhibitors like, polymerisable porphyrins and multifunctional nanocomposites, is extremely useful in many environments. Phosphogypsum is a waste product resulted from the process of obtaining the phosphoric acid and it can be also used as corrosion inhibitor; in a mixture with other coating materials. Two types of modified porphyrin: Na4TFP Ac - dissolved in KOH and H2SO4 and H2TPP - dissolved in benzonitrile, were tested. The structure characterization of pho...
Autori: Ionel Balcu, Adina-Elena Segneanu, Marius Constantin Mirica, Mirela Ioana Iorga, Corina Amalia Macarie, Iuliana Popa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25477

Abstract Macro-Defect-Free (MDF) cements are polymer-cement composites characterized by high value of flexural strength. Due to their thermal and electrical insulating properties, MDF cements could replace other insulators obtained by environmental non-friendlier technologies or being themselves toxic and non-biodegradable. MDF cements obtained by the use of an ecologic polymer (poly(vinyl alcohol)) shows high mechanical resistance in the initial state but also it’s dramatic decrease after ...
Autori: , Georgeta Moise, Hulusi Ozkul, Ozgur Ekincioglu, Catalin Croitoru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25493

Abstract A simple method to synthesize copper, nickel and Cu-Ni nanotubes in alumina membrane by direct electrochemical deposition technique is presented. This work is divided into three main parts: - elaboration of the nanostructured metals supported on Cu and Ni electroconductive support; - SEM - EDX characterization of nanodeposits; - electrochemical characterization of the nanostructured electrodes; Cu and Cu-Ni nanostructures were obtained by deposition through an alumina membrane (...
Autori: Maria Jitaru, Ana-Maria Toma, Mihaela-Claudia Tertis, Ancuta Trifoi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25496

Abstract The purpose of this work is to investigate the secondary Al slag (SAS) relating to its technical and environmental properties and, as consequence, to its compatibility with Portland cement matrix. This study may be a contribution to establish of SAS potential valorization as secondary raw material (SRM) in low strength cement matrix composites, as construction products. DRX mineralogical analyses revealed that SAS includes transition alumina compounds, especial boehmite. The hydrati...
Autori: Maria Gheorghe, Nastasia Panait, Romanita Teodorescu, Maria Roman
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25498

Abstract The cleanup of environmental pollution involves a variety of techniques, ranging from simple biological processes to advanced engineering technologies. Cleanup activities may also address a wide range of contaminants. Technologies to remediate contaminated soil fall into two principal clean-up approaches: in-situ (which is always done onsite), or ex-situ (which can be done on- or off-site). In-situ treatment deals with contamination without removing material from the ground, while ex...
Autori: Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25501

Abstract Waste management hierarchy has as priorities waste recycling and energy recovery. Unfortunately, Romania is in the situation so as the waste landfilling is still considered as a suitable solution for waste management. European Union imposed a number of regulations and programs in the field of waste treatment and management that Romania must comply. The paper describes some aspects regarding characterization of the leachate originating from the Tomesti landfill (situated in Iasi County...
Autori: Ana-Maria Schiopu, Brindusa Mihaela Robu, Ion Apostol, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25523

Abstract In the paper is analyzed the possibility of using some industrial wastes for obtaining new building materials. From the industry or from the power station a lot of by-products or wastes have resulted and their storage is a big problem for the environment. In the building material industry a part of these wastes can be used in different ways: for replacing the cement, as addition in concrete, as component of cements, in the mixture of polymer concrete, etc. In the present investigati...
Autori: Marinela Bărbuţă, Nicolae Taranu, Maria Harja
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25525

Abstract Peat moss has been widely used as low-cost adsorbent to remove a variety of pollutants, including organic compounds and metal ions from aqueous effluents. Various functional groups allow such compounds to bind on active sites of peat moss. The adsorbent used in this study was Romanian peat moss sampled from Poiana Stampei (Romania). The adsorption of Co(II) ions from aqueous solutions on Romanian peat moss was studied in batch experiments, in order to establish the influence of initi...
Autori: Corneliu Caramalau, Laura Bulgariu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25533

Abstract Geopolymerization is a continuous developing field of research for utilizing solid waste and by-products. It provides a solution to many problems where hazardous residue has to be treated and stored under critical environmental conditions. Consumption of fly ash in the manufacture of geopolymer is an important strategy in making materials more environmentally friendly. Fly ash has been chosen as a base material in order to utilize this industrial waste. Previous researches have show...
Autori: Maria Harja, Marinela Bărbuţă, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25542

Abstract The paper makes qualitative and quantitative analyses of heavy metal contamination of surface waters in Iasi City. The examination of data acquisited from the specific sections of the rivers Bahlui (upstream section, Iasi water treatment plant, Holboca section, downstream section, Iasi water treatment station), Nicolina (quarterly data from the established monitoring system) was performed, based on data provided by the Environmental Protection Agency of Iasi District and Prut Water D...
Autori: Corneliu Horaicu, Florea Cornel Gabrian, Irina Grozavu, Catalin Constantin Calu, Monica Horaicu, Brindusa Robu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25546

Abstract The paper describes the complex research developed within a national research project. The proposed studies and researches are according to the thematic frame of the program cooperation-environment of FP7, whose fundamental objective is related to the natural and anthropogenic environmental problems and resources. Under this context, the project proposes a coherent, conceptual framework for integrated environmental risk assessment and management, generated by the presence of persiste...
Autori: Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25548

Abstract The paper examines the effects of high temperature corrosion of the surfaces of heat exchange due to corrosive components formed in the co-combustion of biomass and coal. High temperature corrosion of the surfaces of heat exchange becomes a priority in the combustion of biomass with high chlorine and alkali metals, as alkali chlorides formed deposited on the surfaces of heat transfer, leading to serious consequences for them. Forms of manifestation of corrosion are numerous, the most...
Autori: Ionel Pisa, Corina Rădulescu, Lucian Mihăescu, Gheorghe Lăzăroiu, Gabriel Negreanu, Simona Zamfir, Danut Vairenu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25553

Abstract The practical capacity of an ion exchange or chelating resin depends on various process variables, such as initial solution pH, initial metal ion concentration, metal/resin ratio, contact time and temperature. This work presents the optimization of process variables to maximize the copper loading capacity of chelating resin Purolite S930. To study the combined effect of the initial solution pH, initial Cu (II) concentration and resin dosage were used a 23 orthogonal central composi...
Autori: Petru Bulai, Catalin Balan, Corneliu Cojocaru, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25563

Abstract Withania frutescens plant from the south-western Morocco was used as an environmentally friendly material for the removal of As(V) ions from aqueous solutions. This work presents the characteristics of the adsorption and the desorption processes of As(V) using the dried W. frutescens plant as an environmentally friendly adsorbent. The mass of the adsorbent, the As(V) concentration, the contact time and the pH of the tested aqueous solutions were used as controlled variable parameters...
Autori: Mohamed Chiban, Gabriela Lehutu, Fouad Sinan, Gabriela Carja
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25568

Abstract This work describes the preparation of a hydroxyapatite/polyurethane composite membrane and their characteristics. The porous hydroxyapatite/polyurethane composite membranes were made via solvent casting process. The deposited hydroxyapatite layers were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The data suggest that the method utilized in this work can be applied to obtain deposition of coating of crystalline hydroxyapatite on porous polyurethane...
Autori: Gabriela Ciobanu, Dorina Ignat, Gabriela Carja, Constantin Luca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25572

Abstract Chromium (Cr) is one of the most common metal contaminants in soil because of its use in ore refining, production of steel and alloys, metal plating, tanneries, wood preservation, and pigmentation. In soil environment, the most stable oxidation states of chromium are Cr (III) and Cr (VI). While Cr (III) is considered an essential trace element for the functioning of living organisms, Cr (VI) is toxic and carcinogenic to humans via inhalation for long exposures, since it is easily sol...
Autori: Dumitru Bulgariu, Laura Bulgariu, Maria Gavrilescu, Raluca Maria Hlihor, Vasile Lucian Pavel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25590

Abstract The aim of this study was to investigate the Congo Red (CR) sorption behavior onto six soils from Ia?…?¸i area, with different characteristics. The rate of sorption of Congo red dye molecules from aqueous solution by soil was studied in batch conditions. The rate of sorption was very rapid in the first 5-10 minutes and reached a maximum in 20 minutes. Kinetic modeling analysis of the pseudo-first-order, pseudo-second-order, intraparticle diffusion and Elovich equations reveals that t...
Autori: Camelia Smaranda, Dumitru Bulgariu, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25594

Abstract This paper presents a portable device for rapid preparation of samples, in situ, in order to facilitate the detection and identification of toxic substances. This product is for research and provides increased sensitivity NBC detection equipment (ion mobility spectrometers, indicated tubes), and decreasing the time needed for preparation solid and liquid samples to identify toxic substances by spectrometric techniques (gas chromatography with mass spectrometry). It is used especially...
Autori: Alexandru Bobes, Aurica Dumitrescu, Doru Alexe, Gabriel Epure, Liliana Rece, Nicoleta Petrea, Petrisor Zamora Iordache, Razvan Petre, Vasile Somoghi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25595

Abstract In the study, the accumulation of secondary metabolites present in Calendula officinalis L. flowers with importance in therapeutics was examined, after the treatment with some substances considered being mutagens. The effect of substances appliedat different concentrations and different times of action was studied, qualitatively and quantitatively, considering various methanol extracts, obtained from the inflorescenses of Calendula officinalis L, which contained polyphenolic fraction...
Autori: Brindusa Robu, Constantin Leonte, Elvira Gile, Roxana Vatavu, Teodor Robu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25598

Abstract Chlorophenols were selected for this study because most of them are toxic and difficult to biodegrade. They represent a particular group of priority toxic pollutants listed by the US EPA in the Clean Water Act and by the European Decision 2455/2001/EC. The efficiency of advanced oxidation processes for degradation of chlorophenols has been extensively documented. The catalytic wet hydrogen peroxide oxidation process, involving oxidation with H2O2 and solid catalysts in mild reaction ...
Autori: Brindusa Dragoi, , Cezar Catrinescu, Daniela Arsene
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25601

Abstract Geographical Information Systems (GIS) can be used in biological conservation as decision support systems, integrating the spatially referenced CORINE land cover and using data to assess whether natural protected areas cover particular types of ecosystems and/or biogeographical diversity. This study analyzes whether the Natura 2000 sites, which are Special Protection Areas and Special Areas of Conservation declared in Romania cover the diversity of wetlands and coastal areas habitat...
Autori: Alexandru-Ionut Petrisor
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25605

Abstract Characterization of soil permeability is of great importance for several geotechnical analyses. In common practice, because of the difficulty in sampling of granular material, constant head permeability tests are usually employed on specimens having similar relative densities to those in the field. An alternative approach to permeability tests for granular soils is the prediction of permeability levels by means of empirical equations depending on several particle size distribution an...
Autori: Alper Sezer, Burak A. Goktepe, Selim Altun
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25609

Abstract The aim of this study was to assess nitrate removal using impregnated activated carbon (AC) with MgCl2. After impregnating of AC using heat treatment, the MgCl2 is converted to efficient MgO. The denitrification was conducted at pH 6.2, 25?C, and initial concentrations of 20 mg/L nitrate-N. The effects of the operating parameters including AC dosage, pH, and contact time have been investigated. Experimental data show that AC modified by MgCl2 was more effective than virgin AC for nit...
Autori: Abbas Rezaee, Hatam Godini, Sahand Jorfi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25618

Abstract The Schiff base N,N??(salicylidene)-methylenediamine, known as Salmen in combination with Cr(III) forms at pH = 4.5 a greenish precipitate, which is stable at room temperature but decomposed on heating. The study of the Infrared spectra, Electron Spin Resonance (ESR), X-ray diffraction and thermogravimetry has pointed out that the precipitation form is a complex, while the molar ratio showed that the combination rate of Cr(III): N,N?-bis(salicylidene)-methylenediamine is 1:1. The new...
Autori: Doina Sibiescu, Ioan Roşca, Irina Spatarescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25619

? POLLUTION PREVENTION, A KEY TO ECONOMIC AND ENVIRONMENTAL SUSTAINABILITY ? A COMPARISON BETWEEN DIFFERENT SCENARIOS OF ROMANIAN MUNICIPAL SOLID WASTE TREATMENT BEFORE LANDFILLING ? A STUDY ON ENERGY CONSUMPTION IN ROMANIA ? ENVIRONMENTAL INFLUENCES ON STRESSED METALLIC SURFACES ? ASPECTS OF HYDRODYNAMICS AND MASS TRANSFER IN DIFFUSED AERATION SYSTEMS ? THE STATUS OF SOME SELECTED HEAVY METALS IN ROADSIDE SOILS OF BURSA PROVINCE, TURKEY ? PREPARATION AND CHARACTERI...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25656

? RESEARCH ON NaCl SALINE AEROSOLS I. NATURAL AND ARTIFICIAL SOURCES AND THEIR IMPLICATIONS ? DECISION SUPPORT MODELS FOR SOLID WASTE MANAGEMENT ? AN OVERVIEW ? POLICY AND STRATEGY FOR IMPROVING SUSTAINABLE SOCIAL DEVELOPMENT PROGRAMMES ? APPLICATION OF SHALLOW POND SYSTEM USING WATER HYACINTH FOR DOMESTIC WASTEWATER TREATMENT IN THE PRESENCE OF HIGH TOTAL DISSOLVED SOLIDS (TDS) AND HEAVY METAL SALTS ? TRENDS OF THE COMMUNITARIAN COHESION POLICIES AND ADVERTISING FOR EC...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25658

? GREEN SYNTHESIS OF SYMMETRICAL CARBONATE FT-IR STUDY ? SINTERED BASALT AS A PROMISING SUSTAINABLE MATERIAL IN MECHANICAL ENGINEERING ? DESIGN OF BUILDINGS INCLUDING ENVIRONMENTAL IMPACT ? ANALYSIS METHODS FOR PYRAZINE-2,3-DICARBOXYLIC ACID SYNTHESIZED USING ELECTROCHEMICALLY REGENERATED KMnO4 ? RESEARCH ON NaCl SALINE AEROSOLS II. NEW ARTIFICIAL HALOCHAMBER CHARACTERISTICS ? DETERMINATION OF AEROSOLS POLLUTANTS ON MEMBRANES. 1. MEMBRANES PREPARATION AND CHARACTERIZATIO...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25660

? STUDY OF BIODIESEL PRODUCTION FROM OILSEED PLANTS II. EVALUATION OF BIODISEL PRODUCTION FROM SOME CULTIVARS OF RAPES ? STUDY OF BIODIESEL PRODUCTION FROM OILSEED PLANTS I. EVALUATION OF THE GENETIC SIMILARITY OF SOME Brassica Napus CULTIVARS USING RAPD MARKERS ? STRUCTURAL CHARACTERIZATION AND IN VITRO CYTOTOXIC POTENTIAL OF COAL DUST IN A ROMANIAN POWER PLANT ? MUNICIPAL SOLID WASTE MANAGEMENT IN BENGHAZI (LIBYA): CURRENT PRACTICES AND CHALLENGES ? COMPARATIVE ENVIRONM...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25661

? COMPARATIVE CONSIDERATIONS ON THE STRUCTURE OF SOME MOLYBDENUM/NIOBIUM DOUBLE PEROVSKITES OXIDES ? THE INFLUENCE OF THE STORAGE TIME ON THE STABILITY OF BUTTER ? CaCO3 CONTROLLABLE SYNTHESIS BY DOUBLE EXCHANGE METHOD USING CaCl2 RESIDUAL SOLUTIONS ? OPTIMIZATION OF COAGULATION-FLOCCULATION IN THE TREATMENT OF CANAL WATER ? ANODIC DETERMINATION OF PENTACHLOROPHENOL FROM WATER USING CARBON NANOFIBER-BASED COMPOSITE ELECTRODE ? STUDY OF PRECIPITATES GROWTH IN COAGULATION ...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25663

? COMPACT MICROPULSE BACKSCATTER LIDAR: AIRBORNE AND GROUND-BASED APPLICATIONS ? STUDIES OF THE IMPACT OF AEROSOL OPTICAL PROPERTIES ON CLIMATE CHANGE PROCESSES ? A STUDY OF THE AEROSOL OPTICAL PROPERTIES AT TWO AERONET STATIONS FROM ROMANIA ? COMPLEMENTARY ATMOSPHERIC URBAN POLLUTION STUDIES IN THE NORTH-EAST REGION OF ROMANIA, IASI COUNTY ? ?NGSTR?M TURBIDITY IN THE LOWER LAYERS OF THE TROPOSPHERE ? LIDAR MONITORING OF ANTHROPOGENIC POLLUTION AND NATURAL PHENOMENA ...
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ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25665

? Environmental Engineering and Management Journal, Vol. 9 Nr. 4 ? THE PROTECTION OF EQUIPMENTS USING VOLATILE INHIBITORS ? CONTINUOUS SURFACE TEMPERATURE MONITORING TO ESTIMATE SENSIBLE HEAT LOSS BY BUILDING FINISHES ? RECYCLE OF POLYAMIDE DYEING WASTEWATER FOLLOWING DECOLORIZATION WITH POLYMERIC SORBENTS ? PERFORMANCE EVALUATION OF AMINO ACID SALT-BASED COMPLEX ABSORBENTS FOR CO2 CAPTURE ? ADSORPTION EQUILIBRIUM STUDIES ON COPPER (II) IONS REMOVAL BY NATURAL WASTE USIN...
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ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25666

? EFFECT OF ELECTRICAL CURRENT ON H2/ H2O2 GENERATION IN NON-THERMAL PLASMA GLIDING ARC REACTORS ? ADVANCES IN THE VISUALIZATION OF THREE-DIMENSIONAL SEISMIC VOLUME DATA ? CHARACTERIZATION OF ELECTROMAGNETIC RADIATION FROM A PATIENT MONITOR ? METHODS OF ELECTROMAGNETIC INTERFERENCE REDUCTION IN ELECTROCARDIOGRAPHIC SIGNAL ACQUISITION ? SPHERICAL MODEL OF THE HUMAN HEAD EXPOSED TO ELECTROMAGNETIC FIELD ? BRAIN ELECTRICAL ACTIVITY RECORDING IN SOME ELECTROMAGNETIC ENVIRONM...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25667

? HYDROGEL MICROSPHERES BASED ON ENVIRONMENTALLY FRIENDLY POLYMERS WITH POTENTIAL BIOMEDICAL APPLICATIONS ? STUDY ON THE MIXING EFFICIENCY IN A BASKET BIOREACTOR WITH IMMOBILIZED YEASTS CELLS ? MANAGEMENT OF WASTE FROM ELECTRICAL AND ELECTRONIC EQUIPMENT IN CYPRUS ? A CASE STUDY ? SEPARATION AND CHARACTERIZATION OF ANTHOCYANINS BY ANALYTICAL AND ELECTROCHEMICAL METHODS ? AN INTEGRATED DECISION AID FOR IDENTIFYING AND PRIORITIZING STRATEGIES IN FOREST MANAGEMENT ? INFLUEN...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25668

? ADSORPTION OF DYE FROM AQUEOUS SOLUTION USING SILVER WOOD SAWDUST CARBON ? TIME SERIES ANALYSIS OF THE HEAVY METALS LOADED WASTEWATERS RESULTED FROM CHROMIUM ELECTROPLATING PROCESS ? WATER QUALITY CHARACTERIZATION OF THE PRUT RIVER ? ETHICAL AND SUSTAINABLE EDUCATION OF ENVIRONMENTAL ENGINEERS - BETWEEN REALITY AND HOPE ? INTERACTIONS AMONG CLIMATE, VEGETATION AND SOILS IN RADUCANENI ? IASI AREA ? DISTRIBUTION OF MIXING INTENSITY OF OXYGEN-VECTOR DISPERSIONS IN AERATED...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25669

This study was aimed to explore root spatial distributions on the different sizes of belt spaces in the caragana-grass compound system in Siziwangqi county, Inner Mongolia. The root spatial distributions were observed at selected typical sample plots within the 5m, 10m and 16 m belt-space caragana - grass compound systems. The area of roots spatial distributions were highly correlated with the caragana-grass compound system belt space. Root distribution area was found to decrease with soil depth...
Autori: Yongjun De, Huijun An, Qiuju Guo, Dongmei Ye, Liansheng Guohttp://www.ecozone.ro/reviste.php?RID=25681

PM10-2.5 and PM2.5 samples were collected from December 2007 to January 2008 at six sampling sites in Urumqi Xinjiang, China. The concentrations of seven kinds of water-soluble ions––SO4 2-, NO3-, Cl-, NH4 +, K+, Na+, and Ca2+––were analyzed using ion chromatography. The concentrations of heavy metal elements, Cr, Co, Cd, Pb, and Hg were measured using inductively coupled plasma mass spectrometry (ICP-MS). The results indicated that, in PM2.5 and PM10-2.5, the average mass concentration ...
Autori: Talip Dilnur, Tursun Yalkunjan, Manabu Igawa, Yimit Abulizihttp://www.ecozone.ro/reviste.php?RID=25683

A series of sodium bentonites as raw material were prepared to the modified inorganic iron-nickel montmorillonites and organic composite montmorillonites. The structural characterization and morphology of the iron-nickel crosslinked modified bentonites were observed by means of IR spectroscopy, X-ray diffraction, scanning electron microscopy. The effects of the amount of bentonites, adsorption time and pH change on the adsorption of Cr(VI) have also been studied. The results indicated that the a...
Autori: Shao Hong, Cao Ninghttp://www.ecozone.ro/reviste.php?RID=25695

Many regions are facing formidable freshwater management challenges. In this research, the Water Evaluation and Planning System (WEAP) was used to simulate water demand and supply under planting structure adjustment scenario in Laohahe River Basin (LRB), China. The effects of planting structure adjustment on alleviating the water resources vulnerability were simulated by defining scenario for changes in crops sown area inputs to WEAP model. The results show that compared with the Reference, plan...
Autori: Lu Hao, Lingling Huang, Wenbin Wang, Huiyuan Zhanghttp://www.ecozone.ro/reviste.php?RID=25699

Calcium zincate as an active material in Zn/Ni secondary battery has been successfully synthesized by microwave method. The sample was characterized by X-ray diffraction (XRD), thermogravimetric analysis, scanning electron microscope (SEM), chargedischarge test (CT) and cyclic voltammetry (CV) analysis. The results show that the chemical composition of sample is Ca(OH)2¡2Zn(OH)2¡2H2O with regular spherical shapes. The results from CV and CT measurement indicate that the battery has very high d...
Autori: Mengliang Tong, Xuanyan Liuhttp://www.ecozone.ro/reviste.php?RID=25700

The paper analyses the removal efficiency and fluorescence spectroscopic characterization of landfill leachate dissolved organic matter (DOM) fractions in the combined stripping, fenton oxidation, sequence batch reactor, and coagulation process. The high contents of DOM of landfill leachate in each process unit were fractionated into HA, FA, and HyI. The result was the combined process availability for effective removal of DOM fractions. The removal rates for DOM, HA, FA and HyI were 91.9%, 97.1...
Autori: Zhiping Liu, Jin-song Guo, Fang Fanghttp://www.ecozone.ro/reviste.php?RID=25702

Abstract:Composite manufacturing from plastic wastes of polyethylene terephthalate (PET) type, sand-blasting represents a materialrecovery of the wastes. This process can be achieved, with the purpose of reducing the material consumption which is in deficit,production costs, and the duration of the technological processes.Thermoplastics composites obtained by a melting process at 170-200 oC, wastes incorporation and solidification in forms replacesuccessfully the thermo rigid composites obtained...
Autori: Ioan Ropotă, Marcela Muntean, Mihai Bratu, Ovidiu Dumitrescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25741

Abstract:This technical paper presents some aspects concerning the static finite element analysis of a wind turbine blade. For themanufacturing of the blades for a 10 kW wind turbine elaborated at the Technical University of Moldova composite materialsmade up of polyester matrix reinforced with fiber glass are being used. In order to determine the mechanical properties of theproposed composite materials 10 different samples of laminated composite plates were numerically simulated in ANSYS 11....
Autori: Marin Guţu, Viorel Bostan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25747

Abstract:Films of CuxS with 430-700 nm thickness were deposited by robotic spray pyrolysis technique, at T = 300Â?C, using 90 sprayingsequences, from water:ethanol:glycerol = 7:2:1 (in volumes) solutions with a molar ratio Cu:S = 1:2.5-3.5. Relative dense,homogenous and uniform films of CuxS (x = 1.8-2), with Eg = 1.97-2.49 eV and exhibiting electric resistance behavior wereobtained. The as-deposited films were annealed in air or in sulfur atmosphere, at 300 Â?C, for one hour. Dense and uniform ...
Autori: Alexandru Enesca, Anca Duta, Ionut Popovici, Luminita Isac
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25749

Abstract:This paper aims to analyze two types of wooden briquettes made from different raw material, in order to determine thecompactness of the wood used, namely their compaction coefficient. This factor is a new feature of briquettes that defines moreprecisely the quality of them. The density of raw material and briquettes causes the compaction coefficient, namely the ratiobetween them. Relevance of research and scientific innovation results from the fact that European standard of wooden briqu...
Autori: Aurel Lunguleasa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25753

Abstract:Hybrid nanocomposites may synergistically combine and enhance the properties of inorganic nanoparticles and organicmolecules.The objective of this paper is to examine particular nanocomposites films based on binary copolymers and inorganic TiO2nanoparticles from the structure and properties point of view. These nanoparticles were dispersed in maleic anhydride-styrene(MAS) copolymer by using elaidic acid, trans isomer of the oleic acid, as coupling agent in order to increase the compatib...
Autori: Alina Matei, Dana Perniu, Ileana Cernica, Irina Popescu, Lucia Dumitrescu, Vasilica Schiopu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25755

Abstract:Energy mix used in "Solar House" is currently composed of about 50% renewable energy sources (geothermal energy) and 50%conventional sources of energy (mainly electricity from national grid and less than 10% natural gas). The geothermal energy isextracted by the mean of a ground coupled heat pump which assures the heating load of the "Solar House" and the preparation ofdomestic hot water. The peak load in heating period is covered by a natural gas boiler and the electricity to drive the...
Autori: Bogdan Burduhos, Ion Vişa, Macedon Moldovan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25756

Abstract:The oxidation of low grade complex concentrates (Cu, Pb and Zn) in aqueous media (weak alkaline) oxidized nonferrous metalsconcentrates is carried out at high pressure. Leaching is the subsequent processing step in metal extraction. The paper studies theinfluence of some parameters (temperature, time, L:S ratio, excess) on the leaching efficiency of nonferrous metals from oxidizedconcentrate. The optimum parameters determined are: S/L ratio of 10/1, 25% reactive excess, leaching tempera...
Autori: Cornelia Lupu, Dragoş Taloi, Liliana Gherghe, Luminita Mara, Teodor Velea, Vasile Predica
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25774

Abstract:This study aimed to assess the coagulation performance using simple aluminum sulfate (Alum) and pre-hydrolyzed polyaluminumchloride (PACl) coagulation agents by conventional global parameters, i.e., turbidity and organic matter expressed by totalorganic carbon (TOC) and chemical oxygen demand (COD), and non-conventional spectrophotometric parameters.Non-conventional spectrophotometric parameters, expressed as absorbance recorded at different wavelengths, i.e., A254, A280,A365, allowed d...
Autori: Florica Manea, Georgeta Burtică, Ilie Pisoi, Smaranda Masu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25777

Abstract:Lightweight materials are more viable for use in invariably hot or cold climates than in temperate climates. However, it is possibleto use lightweight construction systems and specifically membranes even in housing buildings in temperate climate areas, if theirproperties are well explored, allowing better environmental performance and cost effectiveness than conventional solutions. In theouter skin and in dividing elements, architectural membranes can be used as thermal regulators, for ...
Autori: António Pedro Reis, Joăo Pedro Couto, Paulo Mendonça
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25781

Abstract:The implementation of the EU Bird and Habitat Directives by the ports and dredging industry caused severe project disruptions across North-West Europe in the past. The prevalence of negative experience triggered a new approach, which aims to integrate site-specific ecosystem characteristics and project objectives during the development of the initial project design. This approach is termed "Building with Nature". The authorities and practitioners hope that the new approach will improve ...
Autori: Hans Bressers, Kris Lulofs, Vera Vikolainen
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25801

Abstract:The paper refers at adsorption studies using the maghemite nanoparticles as adsorbent for removal of the hexavalent chromium from aqueous synthetic solutions. Adsorption reached at equilibrium within 10 minutes and was registered as maximum at pH 2.54. The adsorption data were analyzed and fitted by Langmuir isotherm. Investigation methods for characterization of the nanoparticles were X-ray diffraction, scanning and transmission electron microscopy. Also, in order to evaluate the hexav...
Autori: Andra Mihaela Predescu, Andrei Predescu, , Eugeniu Vasile
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25805

Abstract:The insufficient waste collection service and scarcity of studies about municipal solid waste (MSW) generation in rural communities from developing countries has negatively influenced how MSW is managed by residents and authorities. This has brought about pollution and affected the quality of life of the residents from those communities. This study aims to determine the quantity and type of household waste generated, as well as to know the perception of the community on MSW management i...
Autori: Carolina Armijo, Paul Taboada-González, Quetzalli Aguilar-Virgen, Sara Ojeda-Benítez
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25810

Abstract:The hereby article presents a part of the results of the research made by the author during his PhD degree preparation with respect to asbestos and plastics wastes recycling in the form of composite with polymeric matrix, respectively the toxicological tests performed on the new product. In this respect, three categories of tests were made based on complex and modern analysis methodologies, with high results accuracy: spectral analysis of the wear wastes, morphological analysis of the w...
Autori: Cristina Corpodean, Silvian Ionescu, Valeriu Deac
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25812

Measuring progress of the tourism destinations in the area of sustainability has now become one of the major challenges facing policymakers action. Sustainability is a dynamic concept. In fact, in reality, it really can be measured is not �sustainability�, but �progress towards sustainability�, bearing in mind that this is not an ideal target linked to a fixed state of harmony, but a continuous process of adjustment and reorientation of tourism development to achieve the balance between ...
Autori: Juan-Ignacio Pulido-Fernández, Marcelino Sánchez-Rivero, Yaiza López-Sánchez
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25821

Soil hydraulic characteristics are variable, being influenced by climate changes. Research conducted until now in this area has been based on field soil sampling; their laboratory analysis using experimental techniques; and the use of models and programs for data processing and interpretation. The present research is based on the idea of incorporating smart sensors on site, each one having its own network address, accessible for any location. They can be programmed to send an alarm signal when t...
Autori: Constantin Victor Stătescu, Dorin Cotiusca Zauca, Florian Stătescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25831

The aim of this work is the study of activated sludge floc samples stained with different dyes and imaged by Confocal Laser Scanning Microscopy (CLSM). Activated sludge flocs were stained for lipids, sugars and esterase enzyme producing bacteria. Images were acquired for different samples to analyze the structural characteristics of the bioaggregates. The analysis of the CLSM images allowed for the localization and estimation of the quantity of different build-up materials. The 3-D reconstructio...
Autori: Bela Abraham, Botond Raduly, Dan Niculae Robescu, Szabolcs Lanyi, Szabolcs Szilveszter, Szilard Bucs
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25937

This paper presents the physicochemical and rheological properties of some complex coagulants derived from the weak and medium anionic polymers and medium cationic surfactant in order to evaluate the opportunity to use them in destabilizing and removing the colloidal systems from water and wastewater. In this respect, weak anionic and medium anionic copolymers of acrylamide and sodium acrylate with commercial names of Preastol 2515 and Preastol 2540, and a medium cationic surfactant derived from...
Autori: Constantin Bobirică, Gabriel Dabija, Liliana Bobirica, Mihaela Mihai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25850

The purpose of this study was to prepare new nanocomposite catalysts of Metal/LDHs type by mild reduction of transition metal cations Co2+ and Cu2+ substituted in the matrix of ZnAl-LDH at 150°C and atmospheric pressure, under hydrogen flow. To this end, a series of ZnCuCoAl layered double hydroxides (LDH) precursors were synthesized by co-precipitation method. M2+/M3+ (i.e., Zn2+/Al3+) molar ratios were kept constant while the Cu2+/Co2+ molar ratios were varied in order to investigate their in...
Autori: Adrian Ungureanu, Alexandra Sasu, Alexandru Chirieac, Alina Moscu Corcodel, Brindusa Dragoi, Constantin Rudolf, Emil Dumitriu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25852

This paper is part of LCA studies performed in the frame of FP7 project �Recovered Paper Sorting by Innovative Technologies - SORT IT�. It analysis the results obtained by Life Cycle Impact Assessment (LCIA) of the reference case for recycled packaging paper manufacturing (current sorting technology), which will constitute a comparison base for new sorting technology developed in SORT IT project. The main stages considered in the life cycle were: recovered paper (RP) transport from collectio...
Autori: Alina Iosip, Antonio Dobon, Elena Bobu, Mercedes Hortal
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25860

The present study describes the preparation of a filtering medium from a polymeric cellulosic support (filter paper) by functionalization with monochlorotriazinyl-β-cyclodextrin. The permanent immobilization of cyclodextrins confers the new material special properties and the potential for a better decontamination of liquid and gaseous effluents. The structure, physicomechanical and filtration properties of the filter paper, successfully functionalized with MCT-β-CD, have been emphasiz...
Autori: Ana-Maria Grigoriu, Constantin Luca, Florin Ciolacu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25862

The composite materials based on natural zeolite and undoped and N-doped TiO2, i.e., Z-Na-TiO2 and Z-Na-TiO2-N, were successfully synthesized by solid-state reaction in microwave-assisted hydrothermal conditions. Undoped TiO2 and N-doped TiO2 nanocrystals were previously synthesized by sol-gel method. The X-rays diffraction results of TiO2 nanocrystals indicated that anatase TiO2 is the dominant crystalline type. The composite materials were structural and morphological characterized by X-ray di...
Autori: Cornelia Bandas (Ratiu), Carmen Lazau, Paula Sfirloaga, Florica Manea, Rodica Pode
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25911

The performances of two types of multi-walled carbon nanotubes-based composite electrodes, i.e., MWCNT-Epoxy (CNTEpoxy) and Natural Zeolite-modified- MWCNT- Epoxy (NZ-CNT-Epoxy) are described in order to use them for electroanalytical application. Both electrodes were synthesized, electrically and electrochemically characterized and tested for the detection of ascorbic acid (AA) in aqueous solutions. The electrochemical characterization using classical potassium ferricyanide method showed a high...
Autori: Adriana Remes, Anamaria Baciu, Elida Ilinoiu, Florica Manea, Joop Schoonman, Stephen J. Picken
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25877

Herbicides industry is a large consumer of water, as well as a major wastewater generator, its effluents contain priority organic pollutants in very high concentrations which have severe effects on human health and on the environment due to their toxicity and bio-recalcitrant nature, persistence in the environment and bioaccumulation. A vast number of herbicides and other priority organic pollutants have been found in wastewater effluents, surface water, and drinking water around the world. The ...
Autori: Bianca Weinberg,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25874

Newly prepared SnO2-CeO2 catalyst samples used as depollution catalysts were characterized applying low-temperature nitrogen adsorption (BET), X-ray diffraction (XRD), thermo-gravimetry (TG-dTG) and temperature-programmed reduction (TPR) methods. Pure SnO2 has higher surface area (17 m2/g) than the pure CeO2 (8 m2/g). Addition of organic tin oxide precursor to ceria in amount of 5 wt% slightly decreases the surface area of CeO2 (SSn5-Ce= 7 m2/g). The increase of tin oxide content to 10 and 20 wt...
Autori: , Anca Vasile, , Cristian Hornoiu, Jozsef Kovacs, Tatiana Yuzhakova, Veronica Bratan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25875

Fluorescence spectroscopy is a promising approach to the characterization of natural aquatic components and organic pollutants, due to its rapid analysis and high sensitivity. Petroleum products had been studied, using fluorescence technique, in numerous occasions, as seawater and soil contaminant or as raw sample. Nevertheless, no complex assessment has been made on fluorescence real–time spectra of freshwater diesel oil contamination. This study reports a 5–days experiment on an urban rive...
Autori: Elfrida M. Carstea, Gabriela Pavelescu, Luminita Ghervase, Marina Tautan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25882

This research investigates the influence of certain vitamins (A and D2) on the possibility of hydroxyapatite formation on polymer surfaces. A coating method based on biomimetic techniques was used to form a crystalline hydroxyapatite thin layer on porous polyurethane matrix. The method is based on a wet process of hydroxyapatite formation that involves porous polyurethane film soaking in a modified synthetic Simulated Body Fluid (SBF) solution. This modified SBF solution contains vitamin A and v...
Autori: Alina Costina Luca, Constantin Luca, Gabriela Ciobanu, Simona Ilisei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25884

Fly ash and fly ash based zeolites are inorganics used for improving soil quality. In the current paper, the hydrothermal modification of fly ash was studied. Three methods have been employed for this purpose. The first method involved the use of an autoclave, where synthesis has been performed at a temperature of 120 0C and a treatment time of 4 to 8 hours. Within the second method, the modification of the ash at a temperature of 600 0C by fusion was carried-out. In this method, a mixture of as...
Autori: Corneliu Munteanu, Daniel Bucur, Lacramioara Rusu, Maria Harja, Marinela Barbuta, Ramona Carla Ciocinta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25885

The present study was carried out to highlight the areas where heavy metal content in the soils from Rodna mining perimeter exceeds normal limits and to attempt to reduce the concentration of free heavy metal ions by using natural zeolite from the Dej tuff. In order to emphasize the heavy metal content and their accumulation in soil in Rodna region, 35 soil samples were collected from the upper and deeper layer (about 0-10 and 10-20 cm depth) and analyzed to determine total and free Cu, Pb and Z...
Autori: Ramona Nimirciag
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25900

An alternative preparation method for PAC (pre-hydrolyzed aluminium chloride with general formula Alm(OH)nCl3n-m) by electrochemical synthesis is presented in this paper. The electrochemically obtained PAC (E-PAC), in which the most effective species of the polymeric Al component were estimated by 27Al RMN method, with properties similar to the properties of a commercially available PAC solution, was successfully generated in a electrochemical reactor. For obtaining as much as Al13 polymer by el...
Autori: Adina Pacala, Ciprian Radovan, Ilie Vlaicu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25901

Abstract A one-stage aerobic moving bed biofilm reactor (MBBR) (Reactor A) and a combined reactor (Reactor B) involving an anoxicgravel-bed biofilm reactor (GBBR) and an aerobic MBBR were applied to the treatment of heavily polluted river water. Reactorperformance was investigated throughout the experiment for almost 200 days and molecular techniques including PCR-DGGE,FISH/CLSM and FISH/FCM were used to reveal the evolutions of bacteria community, abundance of nitrifying bacteria and their...
Autori: Linyun Gu, Xiangchun Quan, Yin Qian, Yuansheng Pei, Zhifeng Yang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25942

Abstract Oil contamination has been one of the most common environmental pollution due to its threat to both human health andecosystems. It is difficult for the application of conventional chemical analysis to detect oil contamination in-situ, estimatebioavailability and rapidly assess the environmental risk. In this study, two bioreporters were employed for the rapid and directdetection of oil content and genotoxicity in a cutting oil contaminated site in China. Acinetobacter baylyi ADPWH_...
Autori: Bo Jiang, Chuan Li, Dayi Zhang, Guanghe Li, Wei E. Huang, Yizhi Song
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25944

AbstractVegetable waste was used as the fuel of a two-chamber microbial fuel cell (MFC) for simultaneous power recovery and wastedegradation. Effects of ultrasonic pretreatment, organic loadings, anolyte pH adjustment on the MFC performance wereinvestigated. Results showed that higher power generation and organic compounds removal efficiency were achieved in theMFCs with the vegetable waste pretreated with ultrasonication at >1.0W/mL compared to the un-pretreated control. A maximumvoltage of ...
Autori: Kun Tao, Xiangchun Quan, Yanping Quan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25953

AbstractEstrogens and anti-inflammatories can pose adverse effects on human health and wildlife. This paper investigated four estrogens(estrone, E1; 17β-estradiol, E2; estriol, E3; 17α-ethynylestradiol, EE2) and three anti-inflammatories (ibuprofen, ketoprofen andnaproxen) by solid-phase extraction (SPE) and liquid chromatography tandem mass spectrometry (LC-MS/MS) in BaiyangdianLake during the dry (April) and wet seasons (September). These compounds were mostly detected at low levels ...
Autori: Jianghong Shi, Jinling Cao, Ting Bo, Xiaowei Liu, Yingxia Li
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25955

AbstractThe regional ecological risk assessment of water resources has spatial, nonlinear and stochastic characteristics. GIS technologycan handle large volumes of spatial information, conduct spatial analysis and spatial data management operations. It visuallydisplays the distribution trend of environmental factors and the relationship between topology and regional water ecological riskpattern. This paper presents the five stages of the application of GIS in the regional ecological assessment o...
Autori: Lin Gang Wang, Ning Lian Wang, Xiao BoWu, Ya Qian Zhao, Yin Ge Liu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25958

Geochemical cycling of reduced inorganic sulfur in sediments may affect water quality. This study investigated the reducedinorganic sulfur distribution and environmental behaviour in superficial sediments in different watersheds and coastal zones inBohai Bay, China. Acid volatile sulfur (AVS), chromium (II)-reducible sulfur (CRS) and elemental sulfur (ES) distributed insurface sediment were quantified. Total organic carbon and total nitrogen were presented in higher concentrations in the fluvial...
Autori: Robert Mortimer, Simon Bottrell, Wenjing Shi, Yanqing Sheng
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25959

AbstractConsumption and related waste production is an integral part of our daily lives. The waste generation worldwide depends on theeconomic strength of the given region/country, and it increases from year to year. More and more attention is drawn to the re-use,recycling, reutilization of the waste which are driven mainly by environmental concerns and economic interests. Regional wastemanagement systems have been established in Hungary with the support of EU funds, which process the waste acco...
Autori: Ákos Rédey, , Attila Sarkady, László Dióssy, Róbert Kurdi, Tatiana Yuzhakova
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25970

AbstractEfficient large-scale recycling of polymeric wastes for automotives is of increased interest from ecologic and economic point ofview and represents an important goal for the car recycling industry. One alternative is to develop novel composite materials,relying on waste car parts, for indoor or outdoor large-scale applications, without using small molecular plasticizer or otheradditives but insuring a good compatibility for large percentages of thermoset plastics in the composite. Previo...
Autori: Anca Duta, Cristina Cazan, Dana Perniu, Mihaela Cosnita
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25982

This special issue of EnvironmentalEngineering and Management Journal is dedicated tointerdisciplinary research and discusses multipleresults addressing environmental issues inElectromagnetic Compatibility (EMC) andEngineering in Medicine and Biology (EMB) areas.Some of the most significant researchdirections considered in this issue entail theelectromagnetic pollution together with a survey ofelectromagnetic environment in order to analyze andquantify the biological and health effects ofelectro...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25990

AbstractThe HR BREACH model is a physically based numerical model for the simulation of breach initiation and formation throughembankment dams, dykes, and flood embankments. The model is used for the analysis of homogenous as well ascomposite/zoned embankments. Simulation can also include the effect of surface protection such as grass or rock blocks. Twobreach failure modes are available: failure by overtopping and failure by piping. Breach growth can proceed through surfaceerosion or head-cut e...
Autori: Andreja Jonoski, Ioana Popescu, Mark Morris, Mohamed Hassan, Tseganeh Gichamo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26017

AbstractIn this paper the synthesis, characterization and testing of composite material based on multi-wall carbon nanotubes and silverdopednatural zeolite (MWCNT-ZAg) has been investigated for humic acid (HA) adsorption. The surface characterization of thecomposite material has been investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM/ EDX) analysis.The Langmuir and Dubinin-Radushkevich (D-R) models fitted the best experimental data informing that adsorption process ofH...
Autori: Aniela Pop, Corina Orha, Florica Manea, Virgil Tiponut
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26023

AbstractThe aim of this work is to characterize the flocculation process of a bentonite synthetic suspension with characteristics close toBega River from Timisoara, Romania. The time stability of the synthetic suspension was firstly investigated. After a few days ofcontinuous mixing a stable suspension was reached, stability being confirmed by monitoring the main physicochemicalparameters (pH, temperature, turbidity, dissolved organic carbon and initial particle size). In order to determine the ...
Autori: Alain Liné, Cosmina-Mariana Militaru, Ligia Barna, Teodor Todinca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26027

AbstractIn this work, cyclic voltammetry (CV) and differential-pulsed voltammetry (DPV) were used to detect pentachlorophenol (PCP)at two types of multi-walled carbon nanotubes (CNT)-based composite electrode, i.e., TiO2-modified-CNT-Epoxy (TiO2-CNTEpoxy)and CNT-Epoxy in 0.1 M sodium sulphate solution supporting electrolyte. The electrochemical behaviour of theelectrodes was investigated in the absence and presence of UV irradiation. A single oxidation peak at a potential value of about+1 V vers...
Autori: , Ágnes Jakab, Aniela Pop, Cornelia Bandas, Florica Manea, Joop Schoonman, Rodica Pode
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26033

AbstractIn this paper we analyzed some characteristics of vacuum sewer systems from technical, economical, environmental and socialperspectives. The vacuum sewer systems transport wastewater with lower pressure (p<pat), and are compared to conventionalsewer systems with free level (p = bed) - gravity and under pressure systems (p>pat) - gravity or pumping systems. Vacuumsewer systems are recommended for rural communities and residential neighbourhoods surrounding urban areas, developed ons...
Autori: Corina Panfil, Ion Mirel, Izabella Szigyarto, Monica Isacu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26035

AbstractPrinted circuit boards-PCBs are particularly rich in copper and precious metals. Recoveries of metals in our work started withtests for electrodeposition of Au, Ag and Cu from synthetic solutions on graphite and copper electrodes. Processes were studiedusing cyclic voltammetry in ranges: (-1200)-500 mV and (-800)-(-200) mV and (-400)-1400 mV. Different supportingelectrolytes like: H2SO4 0.5M, HCl 0.1M and HNO3 0.1M were used. Electrodeposition of studied metals from real solutions wasfol...
Autori: Adina Căta, Cristian Tănasie, Daniel Boc, Firuţa Fiţigau, Mariana Nela Stefănuţ, Paula Sfîrloagă, Raluca Pop, Zoltan Űrmösi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26036

In 2012, the Faculty of Hydrotechnics,Geodesy and Environmental Engineering of The"Gheorghe Asachi" Technical University of Iasi,Romania celebrated 50 years of education in the fieldof hydraulic engineering at the Polytechnic Instituteof Iasi.In 1948, in the same time with the EducationReform in Romania, in Galati, the Faculty ofHidrology was founded. At the same time, studentswho were attending the Rural EngineeringSpecialization in Bucharest were also transferred tothe new established Faculty....
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26048

AbstractSimulations using computer models require detailed knowledge of all processes in the soil. Mohid Land is an important modelingprogram developed by a research team from Lisbon. It is a continuous, distributed, variable time step watershed that is grouping 4compartments and water moves through them. In this paper, the authors discuss the procedure applied for modeling using Mohidprogram and the results obtained during simulation of the behaviour of a type of soil....
Autori: Adriana N. Unguraşu, Cristina E. Iurciuc, Daniela F. Anei,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26049

AbstractThe paper presents the application of cross-spectrum analysis (CSA) to air pollution and meteorological time series collected fromseven air quality monitoring stations located in three urban agglomerations of Romania, affected by industrial and trafficpollution: Braşov, Ploieşti and Târgovişte. Data have been collected from November 2011 till March 2012, at one hour samplingrate. The purpose of the analysis was to reveal the correlations between two series at different fre...
Autori: Ştefania Iordache, Daniel Dunea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26057

AbstractThe scope of the present paper is water management dimensioning closed to the copper mining area in the Medet region(Bulgaria). The mining works left an open pit and several waste rock dumps within the catchment area of Medetska River. Atpresent although the flooding of open pit is going on, it will be finished approximately in 2018. Water treatment is necessary dueto the high concentrations of pollutants (sulphate and copper) in the waters influenced by mining. The objective of the stud...
Autori: Gabriela Biali, Petra Schneider, Ralf Löser
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26077

AbstractEast Calcutta Wetland ecosystem is a Ramsar Site in India covering almost 51 km2 and is one of the largest of its type. Thiswetland receives a massive load of almost untreated industrial and domestic effluents every day, throughout the year, that hasbeen effectively utilized in pisciculture for having a better yield (2.85 metric tons of fish per 0.01 km2 of water body per annum).The present investigation was carried out to study the toxicity of the untreated effluents discharged from tan...
Autori: Utpal Singha Roy
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26094

AbstractThe evaluation of the environmental impact of transport infrastructure entails a complex characterization of factors, attitudes andconsequences. In the frame of an ecologically friendly approach, sustainable alternatives and solutions for road asphaltpavements production and exploitation must be identified. A comparative evaluation of the environmental impact for recycledand traditional road pavements asphalt mixtures, expressed as the amount of equivalent carbon dioxide, per ton of mixt...
Autori: Alina Mihaela Nicuţă
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26096

The ELSEDIMA International Conference on “Environmental Legislation, Safety Engineering and Disaster Management” held its 9th edition in 2012. This edition was organized by the “Babeş-Bolyai” University of Cluj-Napoca - Faculty of Environmental Science and Engineering, together with the Ministry of Administration and Interior - General Inspectorate for Emergency Situations, the Disaster Preparedness and Prevention Initiative for South – Eastern Europe and S.C. I...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26102

Abstract This paper presents some optical and microphysical properties of aerosols measured over the Cluj-Napoca city, at the Faculty of Environmental Science and Engineering, Babeş-Bolyai University. This site is part of the Romanian Atmospheric 3D Research Observatory (RADO) and the Aerosol Robotic Network (NASA-AERONET) and is equipped with the only sun and sky tracking radiometer (Cimel CE 318A sun-photometer) in Transylvania. By analyzing Direct Sun measurements like Aero...
Autori: Nicolae Ajtai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26105

Abstract Being involved in the synthesis of precursors for amphetamine and amphetamine-like drugs, pyridine (Py) may be also regarded as a by-product found when these drugs are obtained via the Leuckart method. Also, pyridine is well known as a biomarker of microorganisms, when those are subjected to pyrolysis before analysis by various instrumental techniques. Consequently, since Py is not commonly found in the air, its presence as a contaminant at trace levels in a room could ind...
Autori: George-Bogdan Ghira
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26109

Abstract Poly(hydroxybutyrate) (PHB) is a biodegradable thermoplastic polyester with very high potential for industrial applications. The properties could be improved by mixing with another polymer, natural or synthetic, such as poly(vinyl alcohol) (PVA). The resulting polymer blends are potentially able to achieve the desired performance for different applications. Biodegradation modifies mechanical, physical and chemical properties of a given material. PHB are degraded by diverse...
Autori: Luiza Jecu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26111

Abstract A set of 500 water samples collected from various sites of Tarnava Mare River, between Medias and Copsa Mica were analyzed, during three years (2010-2012). The physicochemical parameters like: temperature, pH, electrical conductivity (EC), total dissolved solids (TDS), salinity, calcium (Ca2+), magnesium (Mg2+), sodium (Na+), lead (Pb2+), chloride (Cl-), sulfate (SO4 2-), ammonium (NH4 +), nitrite (NO2 -) and nitrate (NO3 -) were determined. The results were co...
Autori: Ioana Piştea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26114

Abstract Contaminated land is a major problem and its remediation costs in Europe and the USA exceed €550 billion; however, rehabilitation proceeds only at a slow pace. The normally high cost of remediation, along with the inefficient use of the available funds, gives rise to a need for a method of effectively allocating remediation funds. Risk assessment based techniques sustain the decision-making process regarding contaminated sites rehabilitation, along with cost/benefit analys...
Autori: Ileana-Codruţa Stezar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26115

Abstract This research has been performed during summer time at Iasi Atmosphere Optics, Spectroscopy and Lasers Laboratory site (LOA-SL), aerosol monitoring station (47.19N, 27.55E). In order to properly identify and characterize the aerosol types, Aerosol Robotic Network (AERONET) data and sun-photometer measurements were analysed using parameters such as: optical thickness, spectral dependence of Ĺngström exponent (α), spectral dependence of Single Scattering Albedo and the ...
Autori: Florin Unga
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26116

Abstract Waste recycling represents a very significant issue for the protection of our environment. Large waste quantities (slag and ashes) are products of the coal extraction industry and its subsequent combustion in thermal power stations. The possibilities of obtaining crystallized glasses in the CaO-Al2O3-Fe2O3-SiO2 system by introducing in the raw materials mixture ashes from Mintia Deva thermal power station have been studied. The physical and chemical characterization of the...
Autori: Firuţa Goga
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26121

Abstract Heavy metals are common contaminants of freshwaters and they can produce toxic effects on aquatic fauna and flora. The ions of heavy metals existing in freshwaters are well known as toxicants for the aquatic organisms. Duckweed is an aquatic plant of small size that floats on fresh water surface of lakes and marshes. The small plants are highly exposed to aquatic pollutants and as a result they are very sensitive to the toxic effects. As consequence the duckweed plants are...
Autori: Vasile Oros
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26122

Abstract Monitoring the quantity of the sludge resulted from domestic wastewater treatment is a current concern in Romania due to the necessity to reduce any risk. This paper discusses the results of monitoring and examination of sludge deposited temporarily in a domestic wastewater treatment plant (5000 people equivalent) from qualitative point of view, following the analysis of the physical-chemical parameters: pH, total solids, specific resistance to filtration, humidity and den...
Autori: Casen Panaitescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26123

Abstract The aim of this paper is to analyze how local and atmospheric conditions influence pollutants’ distribution. Two different sites in Romania were chosen for measurement campaigns: Surlari (44° 34', 26° 19') located into a forest and near a lake, and a suburban area, Magurele (44° 21', 26° 2'), where the anthropogenic activities dominate. The same equipments for measurements of surface ozone, CO, NO2, NO and PM10 were used at the two sites. The measurements were performed in...
Autori: Sabina Ştefan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26126

Abstract This paper presents a proposal for measurements and interpretation of gaseous emissions from the municipal landfills, especially for non-compliant sites. Based on the measurements made on the Pata Rat landfill, Cluj-Napoca, a methodology for interpreting the results is presented, in order to assess current energy potential of the deposit. Measurements are the main basis for determining the energy potential of the deposit. By applying the methodology for determining the ene...
Autori: Michaela Bianca Vac Soporan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26128

Abstract Environmental degradation is today one of the great problems of mankind. Not only the need to exploit, but also the necessity to protect and preserve the natural environment have led to the adoption of specific rules for the prevention and remediation of environmental damages, according to EU standards. Taking into account that any human intervention on the natural and anthropogenic environment can lead to ecological risk diversification, occurrence of accidental pollut...
Autori: Aurica Grec
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26130

Abstract Avocado post-harvest losses and cultivar-oriented trade are relevant issues in Cameroon that affect producers and retailers incomes. Identifying specific chemical characteristics of avocado oils would give an added value to underutilized species. Five avocado varieties, Booth 7, Booth 8, Collinson, Hickson and Lula, were subjected to aqueous extraction and the Attenuated Total Reflectance-Fourier Transformed Infrared spectrometry coupled with chemometrics (ATR-FTIR) profil...
Autori: Brice Ulrich Saha Foudjo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26143

Abstract Large amount of radioactive sources generate gamma rays of various energies and intensities. Gamma-ray spectroscopy is applied for the quantitative study of the energy spectra of gamma-ray sources. In the present paper, a statistical analysis of the energy spectra of gamma-ray spectroscopy monitored during 4 years at the “Dosimetry and Radioprotection” Laboratory from ”Vasile Alecsandri” University of Bacău is provided. Several new mathematical parameters were calcula...
Autori: Marius Stamate
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26144

AbstractRock dynamic mechanical characteristic is the basic information to study the damage of rock structures under dynamic loadsinduced from earthquake or blasting. A nuclear power plant site is a granite mountain of the same active tectonic period. Dynamic triaxial compression experiments need to be conducted on the drill cores of different project parts according to the design requirements. These drill cores were formed in the same active tectonic period, but as a result of the different bur...
Autori: Liu Bo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26163

AbstractBased on the method of images, the three-dimensional soil additive load formula caused by pipe jacking soil loss was derived byusing non-uniform soil displacement mode. Combining the formulas of additive load induced both by bulkhead additive thrust,force of friction between shield and soil, force of friction between follow-up pipes, which are based on the Mindlin solution, theformulas of total soil additive load were obtained. The distribution regularity of total additive load on adjace...
Autori: Gang Wei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26166

AbstractA wet flue gas desulfurization (WFGD) system adopting electrostatically-assited twin-fluid atomization injector was presented.Spatial distributions of the droplet sizes, velocity for different voltages were measured using limewater and SO2 removalefficiency for different voltages and Ca/S ratios were tested using limewater drops. The physical and chemical improvementmechanisms were analyzed using spray characteristics and double film theory. The analysis showed that electrostatically-ass...
Autori: Zhentao Wang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26175

AbstractGallinaceous feathers are an abundant solid waste from the poultry processing industries, which poses disposal problems. Akinetic study dealing with the adsorption process of wool reactive dye, Yellow Lanasol 4G (CI Reactive Yellow 39), ongallinaceous (Gallus gallus, Cobb 500) feathers was carried out. The main research goals of this work were to evaluate theviability of using this waste as adsorbent and to study the kinetics of the adsorption process, using a synthetic effluent. Thechar...
Autori: Sónia Adriana Figueiredo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26203

AbstractAdsorption of a cationic dye, methylene blue, from aqueous solutions by using sawdust (without any modification) by batchadsorbers was investigated. The surface characterization of the saw dust was carried out by Fourier transform infrared (FTIR) andscanning electron microscopy (SEM) and pHzpc of the surface was also determined. Effects of different parameters such ascontact time and initial concentration, temperature and pH on the process of removal were studied. The process of removal ...
Autori: Sushmita Banerjee
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26216

AbstractLow water quality due to high levels of ammonia, chemical oxygen demand (COD), abnormal pH, and undesirable water color isprevalent in many prawn ponds in Malaysia. A composite medium used in the treatment of prawn pond effluent was examinedfor the reduction of undesirable parameters. The composite medium is a mixture of limestone, activated carbon, zeolite, and ricehusk. Experiments were conducted under three different conditions, i.e., sole aeration, adsorption, and adsorption with pre...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26219

AbstractWhite Storks (Ciconia ciconia L.) may cause severe outages in electric networks leading to poor power quality service.Furthermore, bird fatalities often occur as consequence of electrocution. Therefore, equipment damages, economical losses ofindustry and electric corporations and bird deaths persuaded the main electric distribution operator and the regulator toimplement management programs of storks’ activities in the vicinity of electric distribution substructure to minimize storkfatali...
Autori: Pedro M.M. Araújo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26229

AbstractBased on the measurement at a coastal site in the Yangtze Delta, the temporal variation characteristics of ozone and theinfluences of the precursors (NO, NO2, and CO) and meteorological conditions were analyzed. Also the crop yield loss by ozoneexposure at the site was estimated and discussed. The variation of daytime ozone showed a two-peak pattern during the year with one peak in spring and the other in summer, while the nighttime ozone just presented one peak in spring. The diurnal va...
Autori: Wenpo Shan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26231

AbstractFor the purpose of coping with oil spills successfully, it is important to establish effective response and preparedness plans. Inprevious study, we proposed the use of Case-Based Reasoning (CBR) technology to develop environmental emergency responseand preparedness plans. In this paper, we present how to develop a CBR-Oil Spill Response and Preparedness System (CBROSRPS). In particular, the Frame method is employed to do case representation, the modified Heterogeneous Euclidean-Overlap ...
Autori: Zhenliang Liao
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26247

AbstractHealthcare waste management is one of the most important environmental problems in the world and particularly in Tunisia,because of the potential environmental hazards and public health risks. The collection of infectious healthcare waste is a highlyvisible and important service that involves large expenditures. This study discusses the off-site transport problem of infectioushealthcare waste from the 12 hospitals in the governorate of Sfax (Tunisia) to a planned steam sterilization disp...
Autori: Wafik Hachicha
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26252

AbstractInvestigations on thermochemical transformation of asbestos fibers followed by computer aided image analysis are presented.Asbestos Containing Wastes (ACW), notably asbestos-cement, were characterized before and after microwave heating withadditives aimed at reacting with and transforming asbestos fibers. Microprobe analysis helped determine the chemicalcompositions. X ray diffraction (XRD) was used to confirm decomposition of asbestos fibers during microwave heating. Electronparamagneti...
Autori: Yan Yvon
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26256

AbstractThe aim of this study is to elaborate a survey on the efficiency of three anti-aging cosmetic formulations by applying FourierTransform Infrared Spectroscopy (FTIR) with Attenuated Total Reflection (ATR) in order to characterize and identify thespecific recognition markers of the active ingredients. FTIR (ATR) spectrometry in specific regions was applied also to theingredients used in these products, depending on their role in the specific cream. Comparing the different composition of th...
Autori: Anca Maria Juncan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26261

AbstractZarshuran As-Au deposit is the major ore deposit in northwest of Iran. Having been exposed to weathering, the accumulatedmining waste is consumed to deteriorate regional soil and water quality. Accordingly, 11 composite surface soil samples werecollected to evaluate the metallic pollution. Mean concentration of elements As, Sb, Hg and Zn were measured to be 234.9, 19.6,24.2 and 476.7 ppm, respectively. In comparison with mean earth crust and local guidelines for agricultural soil, the sa...
Autori: Abdolreza Karbassi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26262

AbstractWaste Electrical and Electronic Equipment (WEEE) is increasing day by day more than the amount of municipal wastes in thedeveloping world. According to researches of Ministry of Environment and Urbanism in Turkey, to meet growing waste demandin all regions, 850 collection points for the district municipalities and 15 large collection centres are needed. From this point ofview, in this study, the site selection of the plants used for planning and recycling of electrical and electronic equ...
Autori: Müfide Banar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26268

AbstractThe aim of this study is to analyze the surface-ozone concentration mass variations in Bucharest for the 2005-2007 period. Data files from eight urban sites in Bucharest area were processed to extract the surface-ozone features. Generally, the results have shown that the highest values of surface- ozone concentrations are in the summer and in the afternoon, as in the literature. The smallest values are in December and January in all the three years. Monthly mean concentrations have shown...
Autori: Constantin Rada, Cristian Necula, Laurentiu Zagar, Raluca Barladeanu, Sabina Stefan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26275

AbstractLithuania is planning to construct a new nuclear power plant nearby the closed one. The possible radioactive pollution can be one of the main problems in its surroundings. Results of investigations of the gamma radiation equivalent dose rate (EDR) at new nuclear power plant sites are presented. Main factors influencing the level of the EDR are identified and evaluated, and geological structure of alternative sites is discussed. The gamma spectrometry data showed that the dominant influen...
Autori: Raselė Girgždienė, Vigilija Cidzikienė
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26277

AbstractIn this study, the experimental performance of a single slope solar still coupled with an evacuated tube collector was investigated. A single slope passive solar still (PSS) and single slope active solar still (ASS) integrated with an evacuated tube collector were fabricated with an area of 1 m2 and tested in the composite climate of Coimbatore, Tamilnadu, India, (Latitude: 11°N; Longitude: 77°E and an altitude of 409 m above sea level). High water  temperatures in the range of 84.2...
Autori: Karuppusamy Sampathkumar, Palanisamy Senthilkumar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26286

AbstractWorldwide, waste materials are produced as a by-product of industrial manufacturing and placed in storage areas. One of the waste materials is filter cake (FC). FC is formed during the infiltration of cooling water in steel factories. The main aim of this research is determination of optimum usage of FC in the production of impermeable layer on ground by using fuzzy model approach. Because of this, in the study, FC as a waste material was hardened with cement and an impermeable layer was...
Autori: Ä°lker Bekir Topďż˝u, Murat Karacasu, Tayfun Uygunoğlu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26288

AbstractThis study focus on the possibility of removing the basic textile dye Astrazon Blue FGGL 300% 03, from an aqueous solution, using Esmegel clay as adsorbent. The characterization of the adsorbent included the distribution of particle size, physical textural properties, chemical composition and determination of the point of zero charge. The equilibrium isotherms were determined at 20 and 30 °C, pH at 6.0 and 7.5 and adjusted to the Langmuir and Freundlich models, having the latter led to b...
Autori: Chia-Yau Cheng, Paula M.S.S. Luís, Rui A. R. Boaventura
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26292

AbstractThis study aims to investigate the environmental impacts of the municipal waste disposal facility of Pata Rat, Cluj-Napoca, Romania during dry periods of the year. The environmental impact assessment on the landfill site was carried out on the basis of the measurements of environmental quality indicators. Environmental indicators were measured in the surface water, soil and air. For the assessment of the environmental impacts generated by landfill on surface water measurements were carri...
Autori: Ákos Rédey, Anca Gurzau, Antoanela Popovici, Constantin Măruţoiu, Fazekas Bence, , Ildiko Varga, Raluca Mariana Haţegan, Tatiana Yuzhakova
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26296

AbstractThe road infrastructure has a major environmental impact by covering important land surfaces and consuming enormous amounts of raw materials for construction and maintenance. The impact of transport pavements needs to be considered from the design stage and to be examined during the whole life cycle of the infrastructure: raw materials extraction and initial transformation, manufacturing, placement on site, exploitation, maintenance, and demolition. This paper evaluates the impact of asp...
Autori: Isabela Maria Simion, Laura Dumitrescu, Maria Gavrilescu, , Radu Andrei, Sebastian George Maxineasa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26297

AbstractThis investigation compared the performance of Fenton and photo-Fenton oxidation processes in the treatment of sulfidic spentcaustic wastewater. Response surface methodology, particularly central composite design was used to investigate the effect ofFe/H2O2 and H2O2/COD in assessing treatment process efficiency. Empirical models were developed to describe the relationshipbetween the factors and responses. The models were validated through analysis of variance and were further used in pro...
Autori: Azmi Aris, Mohd Ariffin Abu Hassan, Sharifah Hanis Yasmin Sayid Abdullah, Siti Fadilah Md Noor, Zainura Zainon Noor
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26307

AbstractThe monitored natural attenuation (MNA) of groundwater contamination is in many cases considered to be a cost-effective andappropriate strategy to manage the remediation of contaminated aquifers. A prerequisite for the public acceptance of such NAremediationapproaches is that the efficiency of the presumed NA-processes should be proven. This proof must be based on anextensive hydrogeological and in-situ characterization of the ongoing aquifer processes. Additional investigations of aquif...
Autori: Achim Möller, Anja Berning, Anne Berghoff, Bernd Mahro, Christoph Wortmann
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26312

AbstractLead (II) can bind with papain at its active site, destroying the enzymatic activity. Papain a sulfhydryl protease has beenimmobilized in calcium alginate bead for the purpose of removal of lead (II) from industrial waste water. Effect of lead (II) onthe enzyme activity of immobilized papain, has been observed. A detailed kinetic study has been carried out and the data arefitted to different kinetic models. EDS (Energy Dispersive X-Ray Spectrometry) and desorption study suggest that meta...
Autori: Aparupa Bhattacharyya, Parameswar De, Soumasree Chatterjee, Srabanti Basu, Susmita Dutta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26338

AbstractThe survival of Formosan landlocked salmon has been threatened by the change of habitat ambience. Because of the potentialtoxicity of nitrite (NO2-) and ammonium (NH4+) to salmonid fisheries, we studied the evolution of nitrogen compounddistributions in stream water and their relationship with ambient abiotic factors. The water was sampled at five sites surroundedwith various land-use types in bi-monthly intervals for seven years. The results indicated that a high NO2- concentration occu...
Autori: Wen-Hui Kuan, Yi-Lang Chen
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26351

AbstractThis study was conducted to generate a hierarchical modelling based on ecological land classification in the Yukarıgokdere forestdistrict of the Mediterranean region, Turkey. Two ways indicator species analysis was applied to obtain response variables fromthe relevant vegetation matrix at each level. Response variables were modelled by using classification tree technique at eachlevel. Validation tests (i.e. multi-response permutation procedures for determination of differences of pl...
Autori: Kürşad Özkan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26352

AbstractWoodland covers about one third of Italy. No longer just a source of products for fuels and buildings, forests also have aprotective function against natural disasters like landslides and they also serve as recreational areas for people.Our primary goal was to define an overall method for assessing the possible uses of woodland areas to help those preparing forestplanning instruments for evaluating the productive, protective and recreational functions of the woodlands. We quantified, usi...
Autori: Alessandro Toccolini, Giulio Senes, Natalia Fumagalli, Paolo Ferrario
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26382

AbstractThe paper represents the application of a multicriterial analysis for establishing the decisional priorities in the field of impactsgenerated by polluting emissions from large burning installations. The analytic hierarchy process (AHP) method was used inorder to express quantitatively how the environmental protection and sustainable development objectives are met. Based onexperimental determinations carried out on site at Mintia Power Station, Romania and the brainstorming sessions held ...
Autori: Dan Codruț Petrilean
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26398

AbstractThe naturally or industrially occurring flammable mixtures containing combustible gases or/and dusts represent a potential risk ofexplosion with major consequences on the environment and human personnel. Methane and coal dust are among the best knowncomponents able of leading to the formation of such mixtures either in coal mining activities or in different industries using coaldust as fuel. In order to assess the risk of explosion and the explosion evolution in such composite mixtures, ...
Autori: Maria Prodan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26402

AbstractStatic electricity represents one of the potential ignition sources for the explosive atmospheres. The test methods for materials, ingeneral, and especially the test methods for textile fabrics for assessment of the protective performances in static electricity, haveknown a permanent evolution alongside newly developed electrostatically dissipative materials. Within the National Institute ofResearch and Development for Safety in Mines and Explosion Protection (INCD-INSEMEX) new testing s...
Autori: Mihaela Părăian
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26405

AbstractThis paper proposes a tridimensional mathematical model for water migration time in a soil sample, as a prerequisite for thestudy of migration of various liquid pollutants in soil. The variables taken into consideration were measurement position, soiltype, porosity and the height of soil column. The mathematical models were elaborated and tested based on experimental data,assisted by TableCurve 3D software for generating linear and non-linear equations. The proposed mathematical models o...
Autori: Alexandra-Dana Chiţimuş
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26425

AbstractThe failure of process equipment due to the impact of natural hazards, the so-called Natech events, have generated severalindustrial accidents, such as Fukushima, Japan - 2011, Ichihara, Japan - 2011, Tupras, Turkey - 1999, Northridge, US - 1994 etc.,causing the release of large quantities of hazardous materials in the environment. Earthquakes occupy a leading position in thelist of natural hazards with Natech potential, causing serious damage and the loss of containment in process equip...
Autori: Augusta Diana Gheorghiu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26460

AbstractThis study aimed to assess the ability of microorganism populations and two aquatic plant species (water hyacinth - Eichhorniacrassipes Solms and water morning glory - Ipomoea aquatica) to treat domestic wastewater in Nhue Giang pond, Tay Mo village,Tu Liem District, Hanoi City in Vietnam. The results showed that microorganism populations in the pond water contained all ofgroups of microorganisms including bacteria, Actinomycetes, mold and yeast. In water inlet and outlet samples, bacter...
Autori: Nguyen Thi Loan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26476

AbstractThe present work is dealing with the identification of the mercury sources and the quantification of the mercury level in air andurban dust in the industrial area of Iasi municipality. A correlation between some meteorological indicators, atmospheric mercurycontent and the urban dust from the investigated area was pointed out, based on the real time measurements as well as spatialdistribution of other heavy metals in urban dust.The measurements of mercury level in air were carried out at...
Autori: Oana Maria Tucaliuc
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26479

AbstractIn this study, TiO2-zeolite modified carbon nanotubes-epoxy (TiO2-Z-CNT-Epoxy) and TiO2-zeolite modified carbon nanofibersepoxy(TiO2-Z-CNF-Epoxy) composite electrodes were applied for pentachlorophenol (PCP) degradation and determination inaqueous solution. The morpho-structural characterization of the composite electrodes was studied by scanning electronmicroscopy. The electrochemical behaviour of the electrodes was investigated under UV irradiation presence/absence, usingcyclic voltamm...
Autori: Ágnes Jakab
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26491

AbstractThe study site is located on South of Bacau City, Romania, on two water courses: the Siret River – the branch flowing throughthe old riverbed downstream Galbeni Reservoir, and one of its tributaries - an infiltration channel, both of them being used by thelocals for fishing and irrigation, and the common meadow for grazing. The study covers the right side of the Siret River, betweenthe interception point up to Galbeni Reservoir dam and the equivalent length of the infiltration channel. T...
Autori: Maria Ema Faciu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26494

AbstractConcentrations of seven heavy metals (Cd, Cr, Cu, Fe, Ni, Pb and Zn) in the discharged effluents of four wastewater treatmentplants located on the Romanian Black Seacoast, evaluated as average values for four seasons, during 2010-2011 are presented.Total and dissolved metals occurrence was investigated from seasonal samples, to assess the bioavailability of the heavy metalsin the discharged effluents. The analytical measurements were performed by flame atomic absorption spectrometry (FAA...
Autori: Elisabeta Chirilă
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26498

AbstractA soot transducer based on the measurement of the electrical resistance value of the soot layer deposited on a finger structure wastested at different thermophoretic potentials. The soot, similar to that issued from the Diesel engines, in terms of particle numberand size distribution, was obtained by the incomplete burning of propane and subsequent dilution. The decrease of the resistancevalue in time was directly proportional with the temperature gradient. Thus a soot transducer is aime...
Autori: Doina Lutic
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26503

AbstractNano-Ag electrodeposited on carbon nanotubes-epoxy and carbon nanofibers-epoxy composites electrode materials as Ag-CNTand Ag-CNF electrodes were tested for simultaneous detection of arsenic (III) and lead (II) from aqueous solution. Theelectrochemical behaviour of As(III) and Pb(II) on both composite electrode offered useful detection information and Ag-CNFexhibited better electroanalytical performance. The detection scheme using Ag-CNF for simultaneous detection of As(III) andPb(II) wa...
Autori: Anamaria Baciu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26511

AbstractFault-Trees (FT) and Event-Trees (ET) are useful analytic tools for the assessment of reliability and safety of complex technicalsystems, and occupational health-safety systems (OHSS), as well. In this work we broaden and expand our previous studyregarding the features of FT/ET methods. To clarify this further, in the present article we statistically analyzed the results of aliterature survey, concentrated on FT/ET techniques applied in risk assessment (RA) of OHSSs, in order to (i) depi...
Autori: Panagiotis Marhavilas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26518

AbstractGreywater (GW) has attracted global attention as an alternative water source over the last few decades. GW treatment andreliable reuse require the overall qualitative characterization of samples from different sources. This paper represents aninvestigation of household-generated GW in the Northern Great Plain Region of Hungary. Modern and reliable analyticaltechniques and instruments (ion chromatography, microwave plasma atomic emission spectrometry, Zetasizer Nano Z analysis,etc.) were ...
Autori: Ildiko Bodnar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26528

AbstractThe Hungarian Parliament’s Decision 25/2009 (IV.2.) gave the approval to start preparatory activities for establishing newreactors on-site at Paks Nuclear Power Plant. Furthermore, Hungary ratified a treaty with the Russian Federation, signed inMoscow on January 14, 2014, for cooperation in the peaceful use of nuclear energy. Through these activities, Hungary has madeits commitment to nuclear energy clear. In this article, we attempt to prove that neither the law of the European Union, n...
Autori: László Fodor
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26533

AbstractThe adsorption potential of 10 wt.% COOH/TUD-1 material for removing Cd2+ from aqueous solutions was investigated via thebatch technique, and the effects of pH, temperature and contact time were studied. Experimental data showed that the maximumCd2+ adsorption, 90%, occurred at pH 6. The adsorption equilibrium was reached within 35 min for 10 wt.% COOH/TUD-1. Theadsorption mechanism was investigated in terms of its thermodynamics and kinetics. The adsorption data were fitted using theLan...
Autori: Nabila Bensacia
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26558

AbstractLand decay processes caused by erosion are very serious by their long term impact on the quality of soils, surface waters,environment and living standards. This article presents the results of a spatial erosion modelling. A new methodology is herebyproposed to estimate the soil losses caused by water erosion. The method is based on using GIS techniques, and its noveltyconsists in applying the mathematic calculation model on the pixel/ cell level, by using the “overlay” technique, which g...
Autori: Gabriela Biali
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26559

AbstractThe aim of this work is to study the valorisation of two regenerated low density polyethylene (LDPE) coming from dirty wastesby blending with polypropylene (PP) in presence of compatibilizer. The first step was the determination of the physico-chemicalproperties of the two regenerated samples (density, melt flow index, water absorption, melting temperature and oxidation index)and the mechanical properties (tensile and shore D hardness).The second step was the characterization of the phys...
Autori: Nabila Guerfi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26565

AbstractThe hotel industry constitutes a major sector of the wider tourism industry and, in common with other industries, hospitalityoperations inevitably entail environmental impacts. Requirements for corporate financial reporting are commonplace, but publicdisclosure of the environmental effects of organizations’ economic actions - referred to as environmental reporting – whilegenerally only a voluntary commitment offers a potentially valuable contribution towards assessing the industry’s glob...
Autori: Patricia Milanés-Montero
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26572

AbstractEnd-of-life tires are waste materials that pollute landscapes when they are disposed of in tire dumps. However, its life cycle is notfinished when they are scrapped. The rubber of end-of-life tires could be used for new purposes as construction material in roadrehabilitation. A gap-graded mix characterization was carried out in this work by means of laboratory and field performancetests. The mixture has a high content of crumb rubber (CR) by weight of bitumen. Crumb Rubber was added to t...
Autori: Victor F. Vázquez
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26577

Abstract Carbon capture and storage is one of the critical technologies that can enable the reduction of carbon dioxide (CO2) emissions of large industrial sites worldwide. The injection of CO2 into saline water formations is related with many factors and processes that control the safety of its long-term storage. This paper analyzes the leakage risks and the factors that influence the integrity of the cap rock in deep saline aquifer formation. Several pathways have leakage potential risks d...
Autori: Xiaojuan Qiao
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26585

Abstract The effects of cadmium (Cd), Zinc (Zn), and Cd–Zn on growth and their accumulation in the Matthiola flavida shoots were investigated. A factorial experiment with two factors (Cd and Zn) concerning four concentrations of Cd (0, 5, 10 and 20 mg L-1) and four Zn concentrations (0, 10, 20 and 40 mg L-1) were carried out. The shoot and root biomass of M. flavida growing in Cd- Zn medium decreased significantly (p<0.01) compared to the control. Growing in the presence of 20 mg L-...
Autori: Naser Jamali
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26587

Abstract The assessment of heavy metals pollution using Xanthoria parietina (L.) Th. Fr. as an indicator species was performed for forests from Bucharest metropolitan area. This study aims to provide original data concerning environmental quality in relation to the intensity of car traffic. Metal concentrations in Xanthoria parietina measured in sites adjacent to roads were compared with those measured at a distance from traffic. The results show significant correlations between the Cd and C...
Autori: Ioana Vicol
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26593

Abstract Some of the major stressors of air quality in the urban areas are nitrogen oxides, ozone and suspended particles. The effect of air pollution on respiratory diseases can increase considerably at high levels of pollution and might trigger asthma symptoms. Longterm exposure can increase the rate of respiratory infections and symptoms at population level, but particularly in children. The goal was to analyze with statistical techniques the pollutant concentrations (NO, NO2, and SO2) re...
Autori: Daniel Dunea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26605

Abstract Embankment works modify the river and floodplain hydrology by interrupting the transversal connectivity of the water bodies. The altered river flow regime affects riparian wetlands. This paper describes the rehabilitation possibilities of embanked areas by restoring connectivity of the river and topographically low zones on the floodplain (oxbows, backwaters, brooks). The following measures are proposed: refreshing inland waters from the river during droughts and evacuation of the e...
Autori: Josif Bartha
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26609

Abstract Xi’an-Baoji Highway is one of the oldest and most important highways in northwest China. In this study, the concentrations (0-20 cm) of Pb, Zn, Cu and Cr at 5-1000 m distances in the roadside soils along Xi’an-Baoji Highway were experimentally determined to analyze their spatial distribution and evaluate their contamination levels. The spatial distribution (mg·kg-1) of Pb, Zn, Cu and Cr at 5-1000 m distances from the both roadsides (North/South) is, respectively, ...
Autori: Shuanxi Fan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26610

Abstract The present study deals with the removal of Cr (VI) from aqueous solution by polypyrrole (PPy). Response surface methodology (RSM) was applied for the design and analysis of experiments in the optimization of pH, temperature, initial concentration, contact time and adsorbent dose during the removal of the Cr (VI). The optimum adsorbent dose, temperature, initial concentration of Cr (VI), pH and contact time were found to be 0.8 g, 46.5 oC, 187.5 mg/L, 5.3 and 15.4 min respectively. ...
Autori: Ehsan Hasani
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26614

Abstract Samples were collected for six months (nine storm events) to observe the contaminant loads from three highway segments at Rawalpindi, Pakistan. The contaminants analyzed include total suspended solids (TSS), total dissolved solids (TDS), total nitrogen (TN), chemical oxygen demand (COD), total organic carbon (TOC), total phosphorous (TP), sulphate (SO4), chloride (Cl-), iron (Fe), copper (Cu), zinc (Zn), lead (Pb), and chromium (Cr). Mass vs. volume [M (V)] curves were drawn to inve...
Autori: Hamid Iqbal
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26617

Abstract The effects of nitrogen (N) and phosphorus (P) addition to peatland ecosystem on emissions of nitrous oxide (N2O) were measured using the closed chamber method during one growing season within a peatland on the Tibetan Plateau. The highest N2O fluxes occurred during late spring (May), while fluxes of N2O were lowest during early autumn (September). No significant correlations were found between N2O emissions and soil temperature. Because of the sites stable hydrological conditions n...
Autori: Yongheng Gao
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26626

Abstract The degradation of polycyclic aromatic hydrocarbons (PAHs) including fluorene, phenanthrene, anthracene, fluoranthene and pyrene were investigated under thermophilic and mesophilic anaerobic-methanogenic conditions. By using central composite design, the impact of PAH concentration and soil to inocula ratio were systematically studied for their influence on PAH removal and biogas production. During the first 30 days, PAH concentration decreased in all samples indicating that the ino...
Autori: Tahseen Sayara
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26629

Abstract Wine analysis is a complex process, requiring multiple techniques and very in-depth multidisciplinary knowledge. Moreover, when talking about sensorial potent wines, like Muscat or Tămâioasă Românească (from aromatic Romanian grape variety), the identification and characterization of its volatile compounds is achieved through different methods, most calling for powerful solvents to separate the aroma substances. Supercritical fluid extraction is a powerfu...
Autori: Lucia Cintia Colibaba
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26641

Abstract Hydrogel membranes obtained by neat polyvinyl alcohol (PVA) or PVA with various bio insertions like: Scleroglucan (Scl), Zein (Zein) or Cellulose (Cel), were subjected to diffusion and sorption/desorption experiments using different type of dyes such as: Crystal Violet (CV), Methylene Blue (MB), Congo Red (CR). If the sorption, desorption or diffusion of a dye in/from/through a hydrogel is usually monitored by the dye solution analysis, in this case the transport phenomena are follo...
Autori: Adina Papancea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26649

Abstract Copper nanoparticles were successfully synthesized on polyether-functionalized mesoporous silica to investigate the effect of metal loading (10, 25 and 35 wt. % Cu) on their structural and catalytic properties. The oxide forms of these nanocomposite materials were thoroughly characterized by nitrogen physisorption, SAXS, WAXS, TEM, EDXS, and TPR, whereas the metallic forms were analysed by N2O chemisorption. The results indicated that the mesostructured SBA-15-like hybrids favoured ...
Autori: Constantin Rudolf
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26653

Abstract Biochar derived from agricultural biomass waste is increasingly recognized as multifunctional material for various applications according its characteristics. It is therefore essential to investigate biochar properties before large-scale application. In this study, rice straw-derived biochars produced at different temperature (550, 650, 750 oC). The resulting biochars were subjected to liquidphase oxidation by different agents including KOH, HNO3, H2SO4, H2O2 and KMnO4 to obtain bio...
Autori: Sobhy M. Yakout
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26661

Abstract Sites contaminated with hazardous materials pose serious risks to human health and ecological environments. Quantitative health risk assessment is a site-specific complex procedure requiring evaluation of all possible pathways. Several studies have focused on the evaluation of heavy metals or organic pollutants; however, only few studies focused on the evaluation of diverse pollutants such as heavy metals and organics. In this study, the health risk of heavy metals and organic pollu...
Autori: Hou Wei
ISSN: 1
http://www.ecozone.ro/reviste.php?RID=26663

Abstract Adsorption equilibrium and effective diffusion coefficients of water vapor, in cylindrical particles of activated alumina (A) and activated alumina impregnated with calcium chloride (MCA), are experimentally determined. The experiments were conducted at 303 K and 323 K using cylindrical particles with 2.5 mm in both length and diameter. Diffusion coefficients were determined from the kinetics of water sorption. The measurements were conducted in a constant pressure unit based on a m...
Autori: Eugenia Teodora Iacob Tudose
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26665

Abstract Drinking water treatment using activated carbon (AC) decontamination offers effective methods for removing some organic compounds, tastes and odors, but it is not so efficient for metals, nitrates, microbial contaminants and other organic and inorganic contaminants. In the last years, nanotechnologies introduced several types of nanomaterials for organic, inorganic and biological removal of contaminants in drinking water, such as: sorption, filtrations and catalytic processes. In th...
Autori: Elena Radu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26671

Abstract Nanoparticles are very interesting materials due to their properties which can be different than those of the bulk and they have many applications in various domains, like electronic, catalytic or biomedical. Gold is one of the most studied materials and is used in many applications that will have the human being as recipient, that’s why gold nanoparticles should be obtained as environmentally friendly as possible. In this work, particles of around 50 nm were obtained in a so ...
Autori: Razvan State
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26676

Abstract The present research reports the synthesis of poly-N-isopropylacrylamide / mesoporous carbon composites, prepared by radical polymerization of N-isopropylacrylamide inside mesoporous carbon pores functionalized with carboxylic groups. The deposition of poly-N-isopropylacrylamide on mesoporous carbon was confirmed by FT-IR spectroscopy, TEM, N2-sorption measurements. The mesoporous carbon material was found to adsorb vitamin B2 from aqueous solution at room temperature. The obtained ...
Autori: Maria Ignat
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26679

Abstract In many coastal areas strong currents may occur from tidal effects, rivers discharges and high waves breaking due to abrupt changes in local topography. The modification of the wave fields by currents and vice versa need to be predicted by reliable nonlinear numerical models, when wave and current coexist along and around the approach tracks of the ports and harbors, or in the areas of ongoing offshore and coastal developments, or in areas subjected to intense navigation. Various wa...
Autori: Angela Ivan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26695

Abstract The main purpose of this paper is to assess the concentration levels of pollutants at six urban sites in Bucharest, Romania in order to draw conclusions on their temporal variability in different sources and under different meteorological conditions. The analysis of measured pollutant concentrations (NOx, NO2, CO, PM10) runs over three years: 2005, 2006 and 2007, and uses data from the network of monitoring stations of Environmental Protection Agency of Bucharest, which was establis...
Autori: Sabina Stefan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26701

Abstract Individual exposure to particulate matter (PM) fractions is mainly determined by indoor source characteristics and personal activity patterns. This paper discusses experimental results obtained through the analysis of individual exposure of women to PM10 and PM2.5. To this purpose, 15 volunteers of different ages and lifestyles living/working in Ceccano (Italy) were selected and their exposures to PM10 and PM2.5 were measured through a handheld photometer. They also filled out a tim...
Autori: Giorgio Buonanno
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26703

Abstract The removal efficiency of algal biomass Chlamydomonas reinhardtii for Pb and Cu metal ions was evaluated in single and binary metal systems. Biosorption experiments were performed in solutions containing 0.2 g L-1 of algal biomass at 30oC and pH 6. Initial metal ion concentrations ranged from 10-7 M to 10-6 M. Thermal analysis of the biosorbent indicated that algal cells are composed of groups containing C, H, N, and S. The presence of ionisable functional groups responsible for bio...
Autori: Roula Flouty
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26709

Abstract The Organizations of the 21st century had evidenced that Management Systems and Standards have become a key aspect for their sustainable development and a prerequisite for their existence. In this recent decade, the Systems for Quality (ISO 9001:2008), Environment (ISO 14001:2004), Occupational Health and Safety (OHSAS 18001:2007), Corporate Social Responsibility (SA 8000:2008 and ISO 26000:2010) and Risk Management (ISO 31000:2009) form the core pillars of the Organization, supple...
Autori: Gopalakrishnan Muthu Samy
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26720

Abstract Impact damage is considered the primary cause of in-service delamination in composite materials and promotes significant reduction in residual strength. Non-destructive techniques (NDT) include several methods able to detect the shape and the size of the interior damages without destruction of the structure or component, which is economically advantageous. The aim of this paper is to evaluate the properties after low velocity impacts using an experimental-numerical procedure based o...
Autori: Ana Martins Amaro
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26726

Abstract This paper aims to analyze the characteristic of Road deposited sediment (RDS) using West Chang Tan highway, Hunan, China as a study site. RDS samples were collected at five representative highway sites and the particle size distribution was generally less than 150μm. Particles with the grain size (<150μm) had high metal concentrations among all sampling sites (unit: mg/kg): Cu 74-178, Zn 309-2737, Pb 601-1160, Cd 9.8-44.5. There is significant spatial variability between t...
Autori: Yunbo Zhai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26728

Abstract This study was carried out to investigate the adsorption of methylene blue (MB) onto pumice powder, as a low-cost adsorbent for the removal of dyes. The experiments were designed based on a central composite design (CCD) and the process was analyzed and modeled using response surface methodology (RSM). In order to study the adsorption process, three important factors viz. pumice dosage (20- 50 mg/50mL), MB concentration (20-40 mg/l) and contact times (5- 35 min) were chosen as varia...
Autori: Kiomars Sharafi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26729

Abstract Response surface methodology and central composite experimental design were used to model and optimize the operational parameters of the excess sludge protein extraction yield by ultrasonic wave-assisted extraction. The three variables involved in this research were the ultrasonic extraction time, pH, and temperature. In the range studied, statistical analysis of the results showed that selected variables had a significant effect on protein extraction yield. The optimized extraction...
Autori: Yulin Xiang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26736

Abstract MFe2O4 nanopowders (M = Ni, Co, Cu) were prepared using the precursor technique, starting from the corresponding metal nitrates and poly(vinyl alcohol)-PVA. During the heating of metal nitrates- PVA solution, a redox reaction takes place around 150°C, leading to the formation of M(II) and Fe(III) carboxylates. These compounds were used as precursors for the ferrites nanopowders. The desired ferrites were obtained by thermal decomposition of the carboxylates; the obtained...
Autori: Marcela Stoia
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26745

Abstract Resilience is meant in this paper as the capability of a networked infrastructure to provide its service even if some components are failed: it depends both on net-wide measures of connectivity and the role of a single component. This paper has two objectives: first to show how a set of global measures can be obtained using techniques from network theory, in particular how the spectral analysis of the adjacency and Laplacian matrices allows us to obtain a characterization of global ...
Autori: Antonio Candelieri
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26746

Abstract In order to remove various radionuclides (Tl+, Sr2+and La3+) from wastewaters we used three solid supports of (styrenedivinylbenzene) grafted with different pendant groups (1-triphenylphosphonium; 2-izo-propylphosphonate; 3- aminoethylaminomethyl). The solid supports with different pendant groups were impregnated with ionic liquid (Cyphos IL-101- trihexyltetradecylphosphonium chloride). IR-spectra, EDX-ray and SEM image were used to characterize the adsorbent obtained after the imp...
Autori: Mihaela Ciopec
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26749

Abstract The paper presents the most economical and less polluting retaining wall system, calculated for the same site, having few different common heights used in design. The paper will highlight the importance of an environmentally friendly solution, but also the most economical solution, which should be the main criteria in the design. Two of the tools used in environmental life cycle assessments (LCA) are the carbon footprint and the energy footprint. The quantification of the carbon and...
Autori: Vasile Farcas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26753

Abstract The present work systematically investigates the photocatalytic degradation of carbamazepine (CBZ), an organic compound, known as refractory to the conventional wastewater treatment by the titanium dioxide PC 500 catalyst. The effects of some fundamental operating parameters in heterogeneous photocatalysis were investigated in this work in order to determine the main ones affecting the degradation kinetics. The obtained results clearly showed that the removal rate of the target comp...
Autori: Lidia Favier
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26754

Abstract Deformation, damage and permanent loss of heritage assets due to various physical and environmental factors has always been a major problem. As the availability of funds for conservation and restoration is limited, the digital documentation of heritage objects and monitoring of environment-induced deformations are increasingly important for cultural heritage preservation. Our study elucidates developments in the digital image capturing and processing for recording architectural heri...
Autori: Jūratė Sužiedelytė-Visockienė
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26759

Abstract In order to verify the possibility of agricultural drought forecasting and prediction of agricultural yields in a given region, two climatic indices were used to monitor drought: Standardized Precipitation Index (SPI) and Bhalme - Mooley Drought Index (BMDI). For the case study were taken into account conditions in Oradea, from Crişurilor Plain, which is located in the Western Romania. Evolution of dry periods determined by the two indices is similar but there are differences i...
Autori: Nicu Cornel Sabău
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26766

Abstract A VOC monitoring was carried out inside and outside a multi-storey car park in order to characterize the emission profile of vehicular traffic source in an indoor environment. BTEX, and in particular toluene, were the most abundant compounds in all monitored sites, with different compositions between indoor parking areas and outdoor sites. The motor vehicle exhaust and gasoline vapor emission in these enclosed parking garages were characterized by diffusion or degradation phenomena ...
Autori: Gianluigi de Gennaro
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26778

Abstract The preliminary results of aromatic hydrocarbon (AR) levels and PM2.5 physico-chemical characterization in Rome urban air throughout the 2014 are reported. A gas chromatograph was used for continuous measurements of AR concentrations with 30 minute time intervals. PM2.5 was collected by PM swam Dual Channel. Metal content was determined by ICP-MS. Single particle characterization was performed by Scanning Electron Microscopy equipped with a thin window system for X-ray microanalysis...
Autori: Carla Fanizza
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26780

Abstract The use of non-conventional water resources including treated municipal wastewater has been increasing in the Mediterranean regions over the last decades to cope with water shortages and uneven rainfalls due to climate change. The aim of this paper is to present the first results from two years of experimental field activities carried out in two different demo-places in Southern Italy: the municipal wastewater treatment plants of Noci and Castellana Grotte (Apulia region). In these ...
Autori: Antonio Lonigro
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26787

Abstract It has been recently shown that acid activation enhances the ability of zeolitic tuffs to bind weak organic bases. More specifically, tuff containing acid-resistant zeolites (i.e. clinoptilolite) exhibits higher sorption capacity than chabazite/phillipsite-rich tuff. Based on the above considerations, we investigated in depth the adsorption behaviour of two pesticides onto acid-activated clinoptilolitic tuff under different experimental conditions. The pesticides simazine and boscal...
Autori: Stefano Salvestrini
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26791

Abstract Waste engine oil contains hydrocarbons which are potentially carcinogenic. The objective of this study was to determine if organic wastes, specifically cow dung (T1) and poultry manure (T2) can improve the microbial degradation of the hydrocarbons. A questionnaire survey to determine generation, management and disposal of waste engine oil was carried out. A Complete Randomized Design, with two treatments and three replications was used to set up plots at Makerere University Agricult...
Autori: Richard Elijah Ssonko
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26820

Abstract The problem of monitoring and controlling the complex and heterogeneous water distribution networks in urban environments is not new. Existing solutions include high-resilience and availability of telemetry systems where a wired or less often wireless backbone is connecting heterogeneous field devices to a centralized control centre. In the control centre, the administrative personnel of the utility are offered an overview of the system status, presented with possible alarms and may...
Autori: Athanasia Tsertou
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26825

Abstract The application of Information and Communication Technologies (ICT) for water supply systems has steadily increased in the last 20 years. The city of Milan is presented as case study where the main challenge for the coming 20 years is the efficient use of energy. Opposite to other parts of the world, in Milan, water is neither scarce nor there is a growing need for supply. Given that the system completely relies on pumping, optimization algorithms and sensor technologies can be appl...
Autori: Mario E. Castro Gama
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26826

Abstract The aim of this paper is to assess the chemical and mineralogical composition and the leaching behavior of the electric arc furnace slags (EAFS) in order to improve their management by identifying suitable reuse options in different fields. The chemical and mineralogical composition of slag varies from one type of steel to another, from one technological stage to another and from one steel plant to another. In order to minimize the slag quantities disposed in the slag dumps one has ...
Autori: Dana-Adriana Iluţiu-Varvara
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26835

Abstract The feasibility of treating tannery wastewater having high organic loads was studied using ceramic membrane based microfiltration process. The common effluent treatment plant (CETP) of a centralized leather complex was selected for the study which accommodates about 450 tanneries in the city, processing hides from raw to finished products. Effluent sample was collected from different locations of the CETP, i.e. untreated composite effluent, effluent from primary clarifier and from ...
Autori: Priyankari Bhattacharya
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26837

Abstract A large number of energy inefficient buildings were constructed without taking into account the principles of green building, which requires efficient utilization of local resources. In this work hemp and peat fibres were used in order to produce effective ecological thermal insulating material. Tests were carried out using short dishevelled hemp and chopped peat fibres. Effective composites from local renewable resources were produced. Macro- and microstructures of composites as we...
Autori: Rūta Stapulionienė
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26844

Abstract The amount of bottom ash produced in Italy from municipal solid waste incinerators is estimated at over a million tons per year. Up to now, it has almost all been disposed of in landfills. Therefore, large profit margins, from both the economic and environmental standpoint, can be expected from the recovery of this material, or at least from a fraction of it. In this study, a rapid procedure for the recovery of different bottom ash fractions based on mechanical sorting and aging was...
Autori: Ivano Vassura
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26853

Abstract An experimental study on the hydrodynamics of fixed, fluidized and spouted granular bed was performed. With this aim two commercial adsorbent materials and a composite material obtained by impregnation with a hygroscopic inorganic salt were employed. The fluid phase consisted in dry air. The obtained results highlight the influence of grain size, material density and roughness over pressure drop and gas velocity. Increasing grain size leads to decreasing pressure drop and increasing...
Autori: Ioan Solomon
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26854

Abstract This work presents the optimization of process variables to maximize the percent of Fe (II) removal, R (%), by chelating resin Purolite S930 from 34% CaCl2 solutions. To study the combined effect of the initial solution pH, initial Fe (II) concentration and resin dosage was used a 23 orthogonal central composite design and Response Surface Methodology (RSM) for analysis of experimental data. To optimize the regression equation was used The Gradient method. The study discovered that ...
Autori: Camelia Popa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26856

Abstract The first step for scientific and sustainable aquaculture development is appropriate site selection, and the success or failure of any aquaculture development largely depends on the right selection of the site. Due to favorable climatic conditions, suitable water quality, soil high natural productivity and space availability, the long southern coastline of Iran is regarded as highly suitable for aquaculture development. Site selection can be viewed as a multi-criteria decision makin...
Autori: Freydoon Vafaie
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26866

Abstract The Waste Management activity (WM) is an urban action becoming more and more important in the municipal economy. In many cities, this activity is linked to significant revenues from the selective waste collection services. Because the current economic situation requires an increasing efficiency and profitability in order to succeed in cutting the operational costs, and as an important part of revenue comes from this selective waste collection activity, the effectiveness must be impr...
Autori: Gabriel Murariu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26872

Abstract In the present study, several selected formulations based on recycled (rPP) or virgin polyolefins (vPP) and lignocelluloses were prepared and subjected to microorganism attack. Biodegradation tests were performed with microbial strains belonging to fungal genera, like Aspergillus, Penicillium and Fusarium. The initiation of biodegradation was demonstrated by Scanning Electron Microscope (SEM) micrographs showing the colonization of surface samples by microbial strains. The crystalli...
Autori: Luiza Jecu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26879

Abstract Waste management in Romania, in particular in Cluj-Napoca city, needs major improvements. By analyzing the results and implementation of waste composition studies which have been performed in different countries, it can be easily noticed that they can play a very important role in the planning stage of waste management, but also in the monitoring and evaluation of the process. Moreover, waste composition studies are an integrated part of waste management planning in developed countr...
Autori: Ioana Nicoleta Pop
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26888

Abstract In the European Union, the hazardous waste recycling has become a priority, as response at legal prohibition for landfilling of untreated WEEE. The economic and eco-efficient recycling methods acquire more and more interest from the industry. The Cathode Ray Tubes (CRT) glass derived from Waste of Electric and Electronic Equipment (WEEE) dismantle is known as hazardous waste, because of their heavy metals content, especially lead. For this type of waste, the authors have proposed in...
Autori: Antoanela Popovici
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26890

Abstract Poly(vinyl chloride) (PVC) is the most widely used material for the production of medical devices such as intravenous fluid bags and tubing, enteral feeding, dialysis equipment and catheters. Despite of their numerous advantages, the plastic medical devices are non biodegradable and prone to microbial colonization causing biofilm associated infections which are difficult to treat and tend to chronicisation. A possible solution to surpass these limitations could be the fabrication of...
Autori: Petruța Stoica
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26894

Abstract The results of batch tests of anaerobic dechlorination on groundwater samples collected downgradient from an industrial site in Northern Italy are presented and discussed. The experiments were carried out using sucrose as electron donor at equimolar concentration and at selected excess with respect to the total reducible species. The purpose of the study was to investigate the effectiveness of sucrose to achieve a complete chlorinated solvents degradations at the specific site, and ...
Autori: Luca Di Palma
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26895

Abstract The CoCrMo alloys have been widely used in artificial knee or hip joints. It is well known that these materials have a good corrosion resistance and acceptable biocompatibility properties. Zirconia as a ceramic biomaterial facilitates the osteoconductivity and tissue osteogenetic capacity in new bone formation around implant. Linear polarization and electrochemical impedance spectroscopy (EIS) were employed to characterize the electrochemical behavior of plasma sprayed yttrium oxid...
Autori: Manuela Romaş
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26896

Abstract The present study analyzes the background pollution in Romania using official data reported for recorded air pollutants from the automated regional stations located at three mountain sites. A series of key figures regarding the trend of background pollution at Romanian mountain sites was extracted based on annual average concentrations recorded between 2010 and 2013 i.e. 8.8 ± 5.2 μg NO2/m3, 5.3 ± 1.6 μg SO2/m3, 0.075 ± 0.035 μg CO/m3, 3.2 ± 0.9 ...
Autori: Daniel Dunea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26897

Abstract In this study, activated carbon was synthesized from durian peel and used for the removal of lead (II) ions from water. The activated carbon was produced with physical activation method using CO2 as the activating agent at 900 oC. Prior to the activation process, durian peel was carbonized under either nitrogen atmospheric or vacuum pyrolysis in order to compare the properties of the synthesized activated carbons. Suitable adsorption kinetics and isotherm models for the lead (II) re...
Autori: Samorn Hirunpraditkoon
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26901

Abstract In Palestine, environmental problems associated with industrial solid waste (ISW) have increased significantly in recent years. This paper presents survey results on current industrial solid waste management (ISWM) practices in the governorates of Nablus and Ramallah & Al-Bireh, Palestine. Solid waste generated from industries was quantified, characterized and discussed in terms of generation rate, storage, reuse/recycling, transportation, and final disposal. An attempt was made...
Autori: Issam A. Al-Khatib
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26903

Abstract The possibility to use release controlled fertilizers in the agriculture of the tropical countries is more important than in the agriculture of the countries of the cold regions. In this context, the purpose of this work is the characterization of an encapsulated commercial Fertilizer of Controlled Release named FERLENT®, which was covered with a polymeric material, obtained in situ, under controlled conditions, which allowed to corroborate the fairly well adjustment of the synt...
Autori: Mayra González Hurtado
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26916

Abstract Establishing a management system for collecting and disposing the solid waste materials is of great importance in urban areas. Belgrade, the capital city of Serbia, is at its initial phase of managing this problem. Currently, landfill disposal is the main option for dealing with rapidly growing amounts of waste. This paper’s research goal is to estimate the landfill gas quantity at Belgrade’s only landfill site Vinca, and to estimate the potential for collection and util...
Autori: Vesna Alivojvodic
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26923

In this study, response surface methodology (RSM) method was applied based on a five-level and four-variable central composite design. The optimization of the C.I. Direct Red 81 (DR81) removal by the combination of electrocoagulation (EC) and UV processes was also performed. The effect of initial pH, reaction time, current density and initial dye concentration on the dye removal was investigated to obtain the optimal experimental conditions. The optimal conditions with the dye removal of 95% ...
Autori: Elmira Pajootan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26942

Various plants were investigated here as bioindicators for control of the environment. Grass, moss and leaves of maple, birch and oak from different locations, i.e., mining, chemical industrial sites and open green area in a small industrial town in the southwestern Poland (Zloty Stok) were examined. Concentrations of As, Ba, Ca, Cd, Co, Cr, Cu, Fe, Hg, Mg, Mn, Ni, Pb, Se, Sr, Ti, V and Zn were measured by the ICP-OES and CVG-ICP-OES techniques. Infrared spectroscopy (FT-IR) was used to inves...
Autori: Lukasz Zarebski
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26951

The present paper discusses the current situation in the municipal solid management existing in the North-East region of Romania. Furthermore, a Decision Support Tool is implemented in order to compare viable alternative waste management scenarios. The most recent data on the available current infrastructure and the amount of the generated waste have been used so as to determine the baseline status, while the results from the onsite waste analysis were also used as input data. To verify sever...
Autori: Vassilis Inglezakis
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26974

In the present study, the effects of two methods for thermal sanitization of soil, by oven and by autoclave, and two non-ionizing radiation sterilization methods, UVC and microwave on pH, conductivity, dry weight, total number of germs and respiration of samples from neutral commercial soil were evaluated, using international standard methods. Also, the infrared and UV-VIS spectroscopy were applied for the determination of chemical properties and structural characterization of humic acid and ...
Autori: Dumitra Raducanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26985

Environmental threats posed in the environment by plastic production and plastic wastes continue to be a major problem today, closely connected with the increase of plastics consumption by the population. Moreover, little efforts are involved in some parts of the world associated to plastic waste collection, recycling and reuse. Considering all these prerequisites, the identification and discussion of risks generated by plastic production and waste in the environment are performed in this pap...
Autori: Elena - Diana Comăniță
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26990

In past ten years area of green technologies and materials was the most growing industry sector in the world. It is related with global warming, air pollution and energy saving. Building sector intensively increased air pollution and is related with high energy consumptions. The use of renewable or recyclable materials can reduce these problems. In current work, thermal insulating materials from hemp shives and corn starch were investigated. Structures of various shives fractions were analyz...
Autori: Giedrius Balčiūnas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26992

Measurements were taken for Ozone (O3) and its precursors simultaneously from June to August 2008 in Beijing. We analyzed the spatial and temporal variability of O3 and its precursors and the roles of the precursors in O3 formation. The results suggest that O3 mixing ratios are higher in rural areas than in urban areas. Highest mixing ratios of VOCs were alkanes, followed by aromatics; alkenes and biogenics were present at lower mixing ratios. Because of their relatively high reactivities, ar...
Autori: Junlin An
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26994

Treatment of domestic wastewater using constructed wetland system vegetated with Phragmites australis was studied at lab scale. Response surface methodology (RSM) a mathematical model was employed for analyzing the effect of independent factors (inlet flow rate, outlet flow rate, retention time) on wastewater parameters e.g. electrical conductivity, BOD5, COD, nitrates, phosphates, total solids, suspended solids, heavy metals in order to maximally treat wastewater. All independent variables w...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26999

The diversity of life cycle impact assessment (LCIA) methods may create barriers to life cycle assessment (LCA) since the focus and outcomes generated could be quite different. Furthermore, these could lead to different interpretations and hence affect the robustness of LCA. While previous studies have attempted to compare various LCIA methods, their results are limited to the cases that were used in their respective studies. To assist LCA participants in selecting a suitable LCIA method to a...
Autori: Ya Hong Dong
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27012

Zirconia (ZrO2) as a ceramic biomaterial facilitates the osteoconductivity in new bone formation around implant. Surface characterization before and after electrochemical testing was performed used scanning electron microscopy (SEM). The electrochemical properties of the yttrium oxide stabilized zirconium oxide (YSZ) coated and uncoated MgCa sample with the open circuit potential at different immersion time in Ringer’s solution were studied by electrochemical impedance spectroscopy (EI...
Autori: Bogdan Istrate
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27021

This paper aims to establish the capacity removal of hexavalent chromium [Cr(VI)] from wastewaters using a TiO2 – Fe3O4 based nanocomposite. Latest researches in the field point adsorption as a better option for removal of heavy metal ions from waters, this method being more efficient and cost effective, in comparison with other advanced methods like reverse osmosis, ion exchange, nanofiltration, etc. Based on this information, the goal of this work had as purpose the obtaining, charact...
Autori: Andra Predescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27025

Air quality became a concern of highest priority in cities and town agglomerations, worldwide. Professional environmental monitoring strategies are prerequisites for supplying appropriate programmes destined to maintain air quality. Due to their capacity of bioaccumulation, tree species may be used as biomonitoring agents within programmes of monitoring air quality in urban spaces. The present study aims to emphasize the ability of A. hippocastanum L., and T. cordata Mill. leaves to be used a...
Autori: Ilie Covrig
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27026

This paper presents a research on ways to reduce waste and to diminish sound pollution by recovery of fir sawdust and recycled rubber granules and use in making sound absorbing composite materials. Four materials were prepared using raw materials (fir sawdust and recycled rubber granules) in various percentages, and polyurethane binder. Materials mechanical and acoustic properties were characterized, proving these materials have useful properties. Materials acoustic performance was compared w...
Autori: Ancuţa Elena Tiuc
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27039

A few variants of hierarchical cluster analysis (CA) as tool of assessment of multidimensional similarity in environmental dataset are compared. The dataset consisted of analytical results of determination of metals (Na, K, Ca, Sc, Fe, Co, Zn, As, Br, Rb, Mo, Sb, Cs, Ba, La, Ce, Sm, Hf and Th) in ambient air dried and kept alive, by the means of hydroponics, moss baskets collected in 12 locations on the area of Tricity (Poland). The selected urban locations covered sites of various anthropoge...
Autori: Aleksander Astel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27046

From previous studies, it was found that the most important pluviometric indicators which characterize the frequency, intensity and spatial distribution of drought in Prut River floodplain are the standardized precipitation index, Hellmann’s criterion and Topor aridity index. Standardized precipitation index values between (-1.5) and (-1.0) indicates a high frequency of the moderate-dry periods and very dry ones reached 2.3 %. Autumn shows moderate - dry traits in 13.5% of the years and...
Autori: Flaviana Corduneanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27050

This paper aims at identifying the specific and phytocenotic diversity, as well as assessing the conservation status of habitats across the Protected Natural Area Racâş-Hida - Site of Community Interest from Romania (ROSCI 209), located in the Sălaj County. The target is to identify taxa and types of natural habitat whose conservation requires them designation as special conservation areas, as well as to identify solution for the sustainable management of the range. As a resul...
Autori: Aurica Grec
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27067

There is a great deal of research focusing primarily on the analysis of cities’ sustainable development, in which the role of culture plays an important role. Accordingly, a range of research disciplines consider the influence of culture on sustainable development. The relationship between culture and sustainable development is analysed from two perspectives: the development of the cultural sector and the presence of cultural dimension in different public policies. One of the elements t...
Autori: Juan Antonio Mondéjar-Jiménez
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27069

We examined the effluent from a municipal (Nyíregyháza, Hungary) wastewater treatment plant (WWTP) on hydrophysicochemical properties and on diversity, community structure, and stability of fish assemblages at the recipient low flow channel system during a two-year period. The WWTP outflow increased significantly the nutrient concentrations (e.g. NO2 and NO3 concentrations increased to 4x and 8x respectively), and the regime (with the permanent ~0.23m3/s load) at the recipient c...
Autori: Péter Takács
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27082

This study highlights the potential use of yellow Zea mays seed chaff (YZMSC) biomass as a biosorbent for the removal of Cr3+, Cd2+ and Pb2+ ions from aqueous solutions. Fourier transformed Infrared analysis of the biomass suggests that YZMSC biomass is basically composed of cellulose and methyl cellulose. The biosorption capacities, qmax, of YZMSC biomass for Cr3+, Cd2+ and Pb2+ are 14.68, 121.95 and 384.62 mg/g respectively. Biosorption equilibrium was achieved at 20, 30 and 60 min for Cr3+...
Autori: Jonathan Oyebamiji Babalola
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27083

Heavy metal pollution is a major source of aquatic contamination and has deleterious effect on the environment, therefore treatment of the polluted sites and wastewater becomes very essential. Biofilm based bioremoval of heavy metals have been a new area of research. Bacterial strains belonging to the genus Bacillus, isolated from chromium polluted soil (Palar river basin, India) have been employed as consortium for Cr(III) removal from chrome tanning effluent. The bacterial isolates were fou...
Autori: Aafreen Fathima
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27086

Membrane technology has become a fundamental unit operation in the industry and society of nowadays and fouling is, probably, the most important concern related with this technology. Fouling is a complex process that can limit the performances of facilities using membranes. Many research efforts have been done in order to reduce fouling tendency. Ceramic membranes can play a major role in fouling mitigation due to its high hydrophilic nature. This paper describes the characterization of a new...
Autori: Mihaela-Elena Dascalu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27089

This study was carried out to monitor the presence of organophosphorus in drainage water (Kafr El-Sheikh (Kotshinar Drainage), Fowa (Fowa Drainge No.11), Metobess (El-Hokss Drainage), Beila (Karakat Drainage), Balteem (Hafeer Shihabeldeen Drainage), Nashart Drainage and El-Hamoul (El-Hamoul Drainage) in Kafr-El-Sheikh Governorate, Egypt. Furthermore, the efficacy of chemical (advanced oxidation processes) and bioremediation (effective microorganisms) for chlorpyrifos removing in drainage wat...
Autori: Aly Derbalah
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27104

This study proposes a modified fractional fuzzy simulation (MFFS) method to predict the toluene and oxygen concentrations in aquifers under microbial attenuation conditions. The method integrates the modeling of groundwater flow contaminant transport and fuzzy parameters analysis within a general framework. Compared to conventional fractional fuzzy simulation (FFS), decreased interior points of fuzzy parameters need to be used, thus reducing the simulation time. The method is applied to an a...
Autori: Li He
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27106

The roots of this study are generated by the problems of plastic waste accumulations: insufficiency of storage spaces, storage costs and outgoings of plastic waste recycling, recovery, decomposition or reprocessing. The paper develops and details a modular prototype, for multifunctional territorial use, offering non-polluting and aesthetic possibility of plastic waste storage. The progress in the related fighting pollution areas have been approached, such as waste management through ecologica...
Autori: Doina Mira Dascălu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27112

The selection of proper compounds to include in perfumes’ formulation is of particular interest for the perfume industry. Essential oils and perfumes are subject to quality control as well as to chemical characterization; therefore, GC/MS-O methodology can be considered a useful tool for research purposes and/or for improving industrial manufacturing processes. In this study, GC/MS-O methodology was applied to a commercial brand perfume and a natural-derived one, both characterized by ...
Autori: Antonella Amenduni
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27125

This work was aimed to test the suitability of an epoxidized cardanol derived plasticizer for the production of soft PVC characterized by low environmental and toxicological impact soft PVC. Nowadays, the use of natural derived plasticizer in soft PVC industry is emerging as valid alternative towards conventional phthalate plasticizers, in order to reduce the environmental and toxicological impact of soft PVC. In facts, cardanol is a natural and renewable resource, characterized by a wide wor...
Autori: Antonio Greco
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27128

In this study, the impact of silicate admixture in 2-line ferrihydrite on its sorption properties is presented. Synthetic ferrihydrites with broad Si content in the range of 0 to 1.5 Si/Fe molar ratios were prepared and characterized using X-ray diffractometry (XRD), Fourier-transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM-EDS). With an increase in the Si/Fe ratio, a typical XRD peak at 2.5Å broadens and shifts toward 3 Å; the position of Si-O stretchi...
Autori: Gabriela Pieczara
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27140

Today, different tools are associated with environmental protection context, which ca include, among others: environmental programmes, objectives and targets, training, incentive schemes, audit frequency, site inspections, administration and community relations. The assessment of different aspects of environmental quality and protection, in a qualitative or quantitative manner is based on various indicators, addressing the three components of sustainability: economic, social, environmental. ...
Autori: Mihnea Costoiu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27163

Catalysts based on nanocrystalline Mg-Zn ferrites supported on commercial alumina were prepared by in situ sol-gel auto-combustion technique. The as-obtained materials were characterized using Fourier Transform Infrared Spectroscopy (FT-IR), X-ray diffraction (XRD), atomic force microscopy (AFM) and Brunauer-Emmett-Teller (BET) specific surface area measurement. These materials were tested as catalysts for hydrogen peroxide decomposition and phenol oxidation reactions. The catalytic activity of ...
Autori: Tamara Slatineanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27192

In this paper low power microwave radiation impact on Zea mays root meristeme tissues was investigated. Seeds with uniform genophond were exposed for 3 hours at 10 W incident power level in controlled condition to continuous wave at three different frequencies (0.6 GHz, 1 GHz and 2.5 GHz) and let to germinate after electromagnetic exposure. Dosimetric assessment made experimentally and computationally allowed the proper energetic characterization of the interaction between vegetal tissue and rad...
Autori: Mihaela Răcuciu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27196

In this paper we present the results of the long term survey of the low frequency (50 Hz÷ 20000 Hz) background magnetic induction (B) in some residential areas. Firstly, we present the triaxial measurement system proposed, realized and calibrated by authors, which has an uncertainty of about 5%. This instrument can make the automatic long term survey with the characterization of the magnetic fields, being adequate to estimate the human exposure. We used our instrument to perform both spot...
Autori: Ionuţ Nica
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27203

Groundwater originating from two rural communities from Cluj and Bistrita Nasaud counties was analyzed using parallel ion chromatography, the focus being on major anions (chloride, nitrite, nitrate, phosphate and sulphate) and cations (potassium, sodium, ammonium, calcium and magnesium). These analytes were determined simultaneously using a Shimadzu two-channel instrument with non-suppressed conductivity detection, separations being carried out using an Allsep Anion 7u column and an Universal Ca...
Autori: Edward Muntean
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27211

Adsorption equilibrium, kinetic and dynamic studies were done for removal of zinc (II) from aqueous solutions using alunite ore. The alunite sample was characterized by using X-ray fluorescence (XRF), optical microscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) porosimetry, differential thermal (DTA), and Thermogravimetric (TG) analyses. The batch equilibrium adsorption data of zinc (II) ions onto alunite particles were applied to some...
Autori: Hoda Arabyarmohammadi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27216

In this study, Response Surface Methodology (RSM) was applied to investigate both the effects of biodiesel percentage in fuel mixture and engine operating parameters (engine load and engine speed) on emission characteristics (unburned hydrocarbons (HC), CO and NOx) of a diesel engine. The optimization of biodiesel percentage in fuel mixture and engine operating parameters also was performed using the desirability approach of the response surface methodology for lower emission characteristics. Th...
Autori: Alireza Shirneshan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27217

In this research, Response Surface Methodology (RSM) was employed to optimize five operating variables including initial pH, current, reaction time, initial hexavalent chromium concentration and dosage of polyaluminum chloride as a coagulant for the removal of hexavalent chromium and its relative operating cost by electrocoagulation process. Central Composite Design (CCD) was applied for the optimization process. The results showed that increase of polyaluminum chloride dosage was beneficial for...
Autori: Sepideh Sadeghi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27230

In this article we present the results of the study concerning the relationship between the concentration of trace elements (lead, chromium, cadmium, cobalt, copper, zinc and nickel) in soil and in the leaves and bark of Populus nigra L. The samples were collected in the period May 2010 – October 2010 in two areas from the Romanian North Littoral of Black Sea. The concentrations of the trace elements in soil, leaves and bark were determined using Flame Atomic Absorption Spectrometry (F...
Autori: Lucica Barbeş
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27239

The capability of ornamental rocks solid waste (ORSW) as a low-cost sorbent was investigated in order to remove As(V) and Mn(II) from aqueous solution. Physical-chemical characterization analyses of the raw material presented albite and quartz as the main minerals. The solid waste presents low surface area (209.70 m2/g). The Langmuir, Freundlich, Sips (Langmuir-Freundlich), Redlich-Petersen and Tóth models were used to analyze sorption phenomena. The maximum sorption capability from the e...
Autori: Fernando Jorge Santos Oliveira
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27246

Rotifers are known as cosmopolitan organisms, found in high density in most waters, often representing the dominant group in terms of species diversity and abundance in the zooplankton community. Since the functionality of an ecosystem is closely related to the diversity of communities, analysis of rotifers assemblage may be a useful tool in understanding the mechanisms of the spatial and temporal changes on this level. Data were collected from 2008 until 2010, in distinct areas of Danube, Sf...
Autori: Larisa Florescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27247

Public awareness and concern with impacts of pollution on multimedia environment have been greatly increased in the last few decades. There are growing needs for creating remediation strategy and setting effective standard and regulations to reduce pollutant levels in the environment. To satisfy such need, tools that can provide comprehensive understanding and characterize the behavior of chemical in the environment are required for environmental risk assessment and management. A new integrated ...
Autori: Zhi Chen
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27251

The Storm Water Flow (SWF) and the Dry Weather Flow (DWF) canals carry composite industrial and municipal effluent (nearly 50,000 m3 d-1) from Kolkata city. Wastewater from SWF and DWF canals is used for pisciculture at the East Calcutta Wetland (ECW) for nearly a century. A wastewater fed pisciculture pond was selected to study the efficiency of the pond in treatment of wastewater. Monthly changes of hydraulic variables viz. inflow and outflow rates, depth, hydraulic loading rates, detention ti...
Autori: Abhishek Roy Goswami
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27255

Different bioleaching processes were applied to mining wastes deposited in the highly polluted post-industrial region - Lower Silesia in Poland. The chemical characterization of the wastes before and after bioleaching processes was performed. The characterisation was based on the distribution of selected elements (Fe, Mn, As, Co, Cr, Cu and Ni) between operationally-defined phases. The phases were defined using a six-step extraction procedure optimised according to the properties of the studie...
Autori: Joanna Pałdyna
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27259

Soil in industrial cities and their surrounding regions sustains high levels of contamination due to the intense industrialization and urbanization. Taiyuan, a city in northern China, and its surrounding regions are a hotspot for the development of heavy industry. To assess the environmental quality, we collected surface soil samples from Taiyuan’s urban–rural transition zone. We determined concentrations of Cr, Cu, Pb, Zn, As, Cd, and Hg. The primary inputs of Cr and As were pedogen...
Autori: Jinchang Li
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27260

This study investigates the adsorption of several metals in aqueous solution, by hemp materials (loose fibre and felted fibre). After characterization of the fibre, an extensive study was conducted on the adsorption properties of this material. The experiments were carried out in poly-metallic aqueous solutions containing Al, Co, Cr, Cu, Ni and Zn at a concentration of 1 mg L-1 and 10 mg L-1 each. The pH effect was found to lead to an optimum between pH 4 and 4.5. The kinetics of the adsorption ...
Autori: Justine Bugnet
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27272

Ammonium is an environmental contaminant encountered in water and soils, its admissible concentrations in soils and waters being established by legislation. Removal of ammonium ions from aqueous solutions from different matrix can be done with several sorbents, among which nano-adsorbents, such as oxidized exfoliated graphite nanoplatelets (ox-xGnP) offer practical solutions, based on their high specific surface area, associated sorption sites and efficiency of application. Several parameters su...
Autori: Daniela Bogdan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27273

In this study was synthesized MCM-41 mesoporous silica by hydrothermal treatment and funtionalized with titanium in order to obtain mesoporous materials with high surfacea area and photocatalytic activity in photodegradation of organic compounds as antibiotics. The functionalization of the synthesized support material was achieved by impregnation from alcoholic solution. The obtained materials (MCM-41) and (Ti-MCM-41) were characterized by X-ray diffraction (XRD), scanning electron microscopy (S...
Autori: Cristina Orbeci
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27274

The aim of this study was to determine the actual impact of the uncontrolled landfill site in Roman town, Romania on the water resource quality. The surface water and groundwater samples were collected quarterly in two time periods: January 2012 - June 2013, when the landfill was operational and July 2013 - December 2014, after the landfill was closed. The parameters analyzed in this study include: pH, biological oxygen demand (BOD5), chemical oxygen demand (COD), NH4+ Cl-, NO2-, NO3-, SO42-, he...
Autori: Lacramioara Rusu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27283

This study presents the results obtained in tailoring thin films of alumina, deposited onto aluminium substrates by spray pyrolysis, at 250°C, using AlCl3 solutions (0.15M) in a water:ethanol (1:1) solvent mixture. As morphology controlling agents, acetylacetone and maleic acid based copolymers are added in the precursors’ solutions. The precursors’ systems are analyzed by FTIR spectroscopy and the surface morphology of alumina thin films is investigated by atomic force microscop...
Autori: Luminita Isac
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27291

The level of dissolved oxygen (DO) in the water downstream hydro power plants is an essential parameter which allows preservation and development of the aquatic habitat. The objective of this paper is to identify a new technical solution that contributes to the increase of DO level in the water passing through the turbine. The current technical solutions improve the DO level but affect the hydraulic efficiency of the turbine. There is no general technical solution for aeration of water used by h...
Autori: Florentina Bunea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27296

In this paper carbon footprint is estimated for wastewater treatment plant Constanta South, Romania, by using a combined model from the available protocols for carbon footprint calculation. Off-site and on-site emissions were taken into account. The carbon footprint calculations were based on the operational data regarding power consumptions, sludge, chemicals and biogas production. A prediction for carbon footprint is done for upgrading wastewater treatment plant. For the current plant technolo...
Autori: Lăcrămioara Diana Robescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27299

Considering the actual environmental issues, the waste management has become a major challenge in Europe and worldwide. Recycling the waste into sustainable products can be an alternative to landfill with positive effects on the costs and environmental pollution. In this respect, in the last years numerous studies and research emphasize the utilization of different type of waste to obtain materials for building applications. The aim of this paper is to assess the effect of using sewage sludge ge...
Autori: Petronela Nechita
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27315

The efforts to quantify gas emissions from wastewater handling have omitted the conveyance along sewers, lift stations, and manholes. This article compared the conventional system with the vacuum system based on sewer gas emissions. The goal of the study was to determine the emissions of methane, hydrogen sulphide, carbon dioxide and carbon monoxide at the level of the wet-wells of the conventional system and the exhaust of the vacuum system before and after the bio-filtration process by way of...
Autori: Iulia Carmen Ciobotici Terryn
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27326

Pharmaceuticals contaminants in waters exhibit a significant threat on the human health and the ecosystem quality. This research demonstrates the utility of a silver-doped zeolite-modified carbon nanofiber-epoxy (AgZ-CNF) prepared by two-roll mill method in development of the fast methodology for the detection of fluoxetine (FXT) in the aqueous solution. The results showed the role of zeolite that improved the sensitivity and the limit of detection of FXT resulted to the possibility to propose a...
Autori: Magdalena Ardelean
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27328

Conversion of natural ecological systems has been one of the greatest human impact on terrestrial ecosystems. The expansion of anthroposphere altered virtually all biogeochemical cycles of elements. Nitrogen holds a key place in sustaining life and presents unique traits such as broad chemical speciation and mobility within the environmental compartments. With historically adapted ecosystems to low bioavailable nitrogen, understanding the complexity of the nitrogen disruption is a continuous cha...
Autori: Andreea Csolti
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27329

The Strategy of Waste Management, Horizon 2014-2020, states 8 major objectives with the role of establishing new priorities for Waste Management. Thus, one of the proposed measures for the next 5 years is encouraging the wastes exploitation for energy recovery. In this context, the main goal of our study was to evaluate the level of pollution considering 5 closed municipal waste dump sites from the North-East region of Romania over the period 2013-2015, having in mind at a first glance, the poss...
Autori: Brînduşa Mihaela Slușer
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27347

A major issue in the undergrounding mining is providing the thermal comfort parameters at the work sites and among those the temperature it’s the most important. Also, in calculus of underground mine ventilation, the air temperature must be taken into account. The rate of dimensionless heat flux has a major influence in the mining environment by heating or cooling the air which flows through a mine work. The present paper studies the complex problem of heat transfer between air and the s...
Autori: Dan Codrut Petrilean
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27361

The paper is focused on a research project aiming to provide conditions for market competitiveness of producers and to guarantee the free movement of Romanian products on the EU. This is done by guaranteeing essential health and safety requirements applicable to work equipment in order to implement policies set out in the strategy EUROPE 2020. This strategy takes into account the priority of: favourable growth of inclusion-promoting an economy with a high rate of employment, ensuring social and ...
Autori: Anca Elena Antonov
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27371

In this study, a decision support system based on a stochastic optimization model under modeling uncertainty and parameter certainty (SOMUM-DSS) is developed for petroleum-contaminated sites management. The SOMUM-DSS incorporates scenario analysis, numerical simulation, multivariate analysis, nonlinear optimization within a decision support system. It provides an effective tool for decision makers to select the optimal remediation strategy. The developed SOMUM-DSS is then applied to a petroleum-...
Autori: Qi Yang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27374

Drilling waste management for oil and gas industry involves collection, transportation, processing, recycling, disposal, and monitoring of waste materials in order to reduce their effects on health and environment. In the Exploration and Production industry, environmental concerns have made effective management of drilling waste at well sites a great priority. Effective waste management is thus a key element in a successful drilling project. The industry therefore relies on effective expertise a...
Autori: M. Enamul Hossain
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27375

The monomer with ketimine side group, 2-(1-(benzylimino)ethyl)phenol (2-BEP), was synthesized from the condensation of 2- hydroxyacetophenone and benzyl amine. The enzymatic oxidative polymerization of 2-BEP was performed in the presence of hydrogen peroxide using horseradish peroxidase (HRP) as catalyst. The oxidation reaction was carried out in various solvents and phosphate buffers at room temperature. These studies have shown that a dark brown polymer was successfully synthesized by utilizin...
Autori: Senem Tapan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27377

This study was to optimize the fermentation process for protein enrichment of potato starch residue (PSR) by solid state fermentation with mixed strains. Three single-factor experiments were conducted to optimize the fermentation conditions, and a Plackett-Burman design followed by a central composite design of response surface methodology was investigated to optimize the medium constituents. The optimal fermentation conditions were fermentation temperature 28°C, fermentation period 72 h and...
Autori: Heng Lei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27380

The main objective of this study was to investigate the potential utilization of polyethylene terephthalate PET waste in cementitious matrix, as substituent to cement, to develop lightweight construction materials and for preventing chemical attacks or repairing various reinforced concrete structures. Composites containing different amounts of PET particles, as partial replacement to cement by weight, were characterized by destructive and non-destructive testing. So, the thermal conductivity, ul...
Autori: Ahmed Soufiane Benosman
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27381

• EXPERIMENTAL INVESTIGATION OF TEMPERATURE EFFECTS ON THE PARAMETERS OF PHOTOVOLTAIC PANELS    • CONCENTRATIONS OF CHROMIUM, CADMIUM AND NICKEL IN TWO CONSUMED FISH SPECIES OF PERSIAN GULF, IRAN    • IMPROVING THE ENERGY EFFICIENCY OF RESIDENTIAL BUILDINGS BY USING A DRAIN WATER HEAT RECOVERY SYSTEM    • ASSESSMENT OF METAL CONTAMINATION AND ECOLOGICAL RISK IN URBAN SOILS SITUATED NEAR A METALLURGICAL COMPLEX    • FINANCIAL DE...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27398

EXPERIMENTAL INVESTIGATION OF TEMPERATURE EFFECTS ON THE PARAMETERS OF PHOTOVOLTAIC PANELS    • CONCENTRATIONS OF CHROMIUM, CADMIUM AND NICKEL IN TWO CONSUMED FISH SPECIES OF PERSIAN GULF, IRAN    • IMPROVING THE ENERGY EFFICIENCY OF RESIDENTIAL BUILDINGS BY USING A DRAIN WATER HEAT RECOVERY SYSTEM    • ASSESSMENT OF METAL CONTAMINATION AND ECOLOGICAL RISK IN URBAN SOILS SITUATED NEAR A METALLURGICAL COMPLEX    • FINANCIAL DEVELOPME...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27399

The data presented in this work has been obtained from experimental research aiming towards the usage of natural resources of the National Park of Sila in Calabria, Southern Italy. Such resources are: “Laricio” pine resin, beeswax, mineral inert and charcoal to make natural glues. Furthermore, research has been done to find out if by using small quantities of carbon nanotubes, the strength of adhesion of prepared glues improves. Raw materials were characterized by physico–ch...
Autori: Pierantonio De Luca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27402

Steady Raw Materials (RM) supply is essential for the EU economy and increasingly under pressure to sustain the businesses and industries demand. The supply of RM is not only a matter of availability of primary but also of secondary raw materials (SRM). In fact a great amount of waste can be regained as practical and valuable SRM by enhancing the recovery processes from industrial, mining and municipal landfill sites, especially if we consider that Europe is highly dependent on the imports of...
Autori: Giovanna Antonella Dino
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27403

This research was focused on the valorization of agro industrial waste/by products available in the local industry with the kilometer zero (km 0) concept, as a replacement of virgin raw materials (clay) to elaborate lightweight aggregates (LWAS). The alternative raw materials were employed as pore forming agent, in order to reduce sintering temperature and energy consumption of the furnace. The three technical nutrients studied were provided for local food industries: sludge from wastewater trea...
Autori: Romina D. Farias
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27405

Two montmorillonitic clays were modified with N-(methoxy-polyethylene glycol) ethylene diamine and tested as sorbents for removal of Rare Earths (REs) from aqueous solutions. Lanthanum was chosen as representing element of REs family and adsorption tests were performed with the aim of selecting a system with good uptake efficiency for the pollutant abatement in wastewaters. The effects of pH were studied and the properties of the obtained final materials were evaluated with simple model syst...
Autori: Elena Maria Iannicelli-Zubiani
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27408

In this work, magnetic alginate was synthesized by encapsulating of Nickel Zinc Ferrite nanoparticle within Ca-alginate. The synthesized magnetic alginate was modified by ethylenediamine using microwave radiation to remove anionic dye from wastewater. The characteristics of magnetic nanoparticle, magnetic alginate and magnetic alginate amide (MAA) were studied using Fourier transform infrared (FTIR) and Scanning electron microscope (SEM). FTIR analysis confirmed the amidation of alginate. Di...
Autori: Niyaz Mohammad Mahmoodi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27424

Cascade dams alter the movement and accumulation of heavy metals in sediments along the river continuum. 27 sample crosssections were taken in July 2011 from the Xiaowan, Manwan, and Dachaoshan dams in the middle reach of the Mekong River in southern China and analyzed for content of heavy metal (Zn, Cr, Pb, As, Cu, Ni, and Cd) concentrations in the dammed river reach. There were evident spatial variations of the heavy metal concentrations downstream and upstream of the three cascade dams; t...
Autori: Li Deng
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27436

This study analyses the relationship between the scattering properties and the chemical compounds internal mixture of the aerosols near Bucharest, Romania. Several cases of local aerosols influenced by heating sources, like wood or fossil fuel, are characterized in order to retrieve the winter period specificity. Correlation between organic and inorganic aerosols composition from mass spectrometry measurements made with Compact Time (CT) of Flight Aerosol Mass Spectrometer (AMS) and scatteri...
Autori: Luminita Marmureanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27444

The problem of water and land pollution in the coastal area of the river Bor, downstream from the Bor flotation tailings, dates back to 70-year of the last century. The paper provides an attempt to restore this degraded area by flotation tailings using method of setting the neutralization layer of wasted lime –filler height 0.1 m between layers of flotation tailings and newly drifted 0.5 m height mold layer on top. The newly formed recultivated area can be used for food production, whether...
Autori: Ljubisa Obradovic
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27453

Timber harvesting and log extraction with conventional ground-based skidding systems in steep, mountainous terrain often results in severe damage to residual stands and forest sites. In this study, the impact of rubber-tired skidders on standing trees along sides of the trails was investigated 5 to 20 years post-harvest in terms of frequency and development of decay at the points of wounding. The study was located in the Hyrcanian mountainous forests of Iran. All standing beech trees (healthy or...
Autori: Davoud Kartoolinejad
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27457

This paper displays the kinetics of the corrosion process for short-term immersion of seven mild steel samples of similar compositions. A comparison between the data obtained for corrosion process in three types of water: bidistilled water (BW), drinking water (DW) (tap water) and river water (RW) (from Bahlui River, Iasi, Romania) has been done. Electrochemical techniques such as the cyclic voltammetry (CV), the linear voltammetry (LV) and the rotating disk electrode technique (RDE) have been u...
Autori: Alexandra Ciomaga
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27460

Municipal Solid Waste (MSW) disposal is currently one of the major environmental issues in big cities. Several tools and techniques have been developed for Environmental Impact Assessment (EIA) of MSW disposal options, including scoping, checklists, matrices, qualitative and quantitative models and decision-support systems. Rapid Impact Assessment Matrix (RIAM) is a partially new method which is particularly advantageous over others as it provides a transparent and permanent record of analysi...
Autori: Zohreh Aliakbari-Beidokhti
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27465

The temporal variation of the pollutant (PM10) levels over urban and rural sites in and near Bucharest was investigated from March 2014 until September 2015. The comparison between the PM10 mass concentration values at urban site and those from referential urban station of Environmental Protection Agency of Bucharest allowed us to detect certain pollution events. Considering this purpose the optical parameters characterizing the loading of the atmosphere (Aerosol Optical Depth-AOD) and the type ...
Autori: Gabriela Manolache
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27467

This paper presents the trampling effects on vegetation composition in three Long Term Socio-Ecological Research sites (LTSER), respectively Neajlov Catchment, Bucegi-Piatra Craiului and Braila Islands (distributed within different biogeographical regions: continental, alpine and steppic), over a period of 3 years (2007-2009). The degree of damage is related to trampling intensity. In forest ecosystems significant declines in species richness was observed two weeks after trampling, from 75 passe...
Autori: Mioara Dumitraşcu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27474

A low-cost magnetic zeolitic material was synthesized from coal fly ash by means of a new, simple method involving alkaline hydrothermal zeolitization of fly ash (FA) followed by low-intensity wet magnetic separation. Scanning electron microscopy with energy-dispersive X-ray analysis was applied to characterize the composition, microstructure, and morphology of the material. The mineral and synthetic zeolite phases were identified by powder X-ray diffraction. The obtained magnetic zeolitic m...
Autori: Annie Shoumkova
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27486

An experimental design methodology was applied to study the copper removal from aqueous solutions by immobilized nanoscale Lentinus edodes. The effect of the various variables (biomass loading, initial metal ions concentration, PH, contact time, agitation speed and temperature) were studied in the batch experiment. The results showed that pH, contact time and agitation speed were the most significant variables on biosorption of copper ions determined by Minimum Run Equireplicated Res V Design...
Autori: Rong Chen
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27487

An apatitic calcium phosphate gel (HaG) was elaborated and used to treat municipal wastewater in a physicochemical cycle prior to the standard biological degradation process. Preliminary laboratory batch experiments outlined the kinetics of heavy metal sorption by monitoring the concentrations found in filtered fractions as a function of treatment time. On site experiments were performed in a municipal wastewater treatment plant by derivation of real wastewater into an experimental tank. In this...
Autori: Nathalie Lyczko
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27488

Nature-based tourism is increasing rapidly in China, forcing policy makers to pay ever-greater attention to the balance between tourism development and natural resource conservation. Taking Jiuzhaigou National Park in Sichuan, one of China’s most famous nature-based tourism sites as an example, this study uses travel cost and contingent valuation methods to estimate the landscape’s “use value” from recreation and users’ willingness to pay for additional measures of ...
Autori: Cheng Cheng
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27499

Increase in tourism demand in the coastal areas of Mazandaran Province, Iran, as one of the major tourist attractions near Tehran, has led to tourism development and consequently adverse environmental impacts. However, given the tourism potential within the region, tourism managers and planners seek to follow sustainable development principles. In this regard, determining sites capable of tourism development and finding an optimal site among the alternatives are two main challenges that they ...
Autori: Jafar Nouri
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27503

Köyceğiz-Dalyan Lagoon is situated in the southwestern region of Turkey. The area between the Köyceğiz Lake and the sea is covered with four small lakes and numerous canals. The Dalyan Channel network connects lake to the Mediterranean Sea is one of the most important reproduction areas for Mediterranean Sea turtles. The objectives of the present study are to evaluate the influence of channel traffic and Köyceğiz Lake on the water quality of Dalyan Channel by evalua...
Autori: Başak Kılıç Taşeli
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27507

This study focuses on some mechanical properties resulted from the tensile testing of a set of green composites with a Dammar-based matrix and reinforcement material of silk, flax, cotton and hemp fabrics. To be precise, we have ascertained the characteristic curve, the resistance to and the elongation at fraction, as well as the modulus of elasticity for each set of samples from these composites and for a set of bioresin samples. With the help of an Electronic Scanning Microscope we captured im...
Autori: Ion Ciucă
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27516

This paper introduces basic information on the biodegradation of polymers as well as the mechanisms of degradation and factors influencing this process. This paper describes prodegradant additives that induce decomposition of polymers to biodegradable compounds with regard to additives causing oxo-biodegradation. Based on the results of experiments conducted for molded pieces made of polypropylene and extrudates made of low density polyethylene with a d2w prodegradant additive, dependences betwe...
Autori: Tomasz Jachowicz
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27519

The environment friendly development of mining applications progressed significantly due to the rapid increase in environmental awareness and requirement of available land. The reclamation studies of those lands, ruined during mining activities, should be evaluated and regained in the most effective and rational way. In recent years, especially in open pit coal mining, reclamation applications become crucial due to rapid spreading of mining companies on extensive lands. These applications were t...
Autori: Tahir Mallı
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27524

This paper investigates the macrophyte Azolla pinnata modified with sodium hydroxide, as a bioadsorbent for Cu2+ and Pb2+ ions in synthetic solutions. Biomaterial characterization was performed using Scanning Electronic Microscopy (SEM); Energy- Dispersive X-Ray Spectroscopy (EDX); Fourier Transform Infra-red (FTIR) spectroscopy techniques and through the blocking of carboxylic and sulfonic functional groups. Kinetics of the process has highlighted a quick and efficient adsorption, even in low ...
Autori: Arielle Barros
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27532

A series of column experiments were conducted to study volatile contaminant (benzene) removal and process principles using soil vapor extraction (SVE) under different thermal conditions. Compared with the normal SVE method, two thermal methodssteam injection and electrical resistance heating effectively increased the benzene vapor diffusion and removal rates. The removal efficiency of benzene with the electrical resistance heating method was 96.5%, which was significantly higher than that with t...
Autori: Peng Li
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27534

In this study major factors affecting the phenolation process of lignosulfonate (LS) waste liquor (recovered from pulp and paper industry) were optimized in order to improve LS substitution for replacing petroleum-based phenols during phenolic resin manufacturing. Four different parameters, namely phenol/lignosulfonate ratio, time, temperature and lignosulfonate waste liquor concentration, were varied in an experimental program having as response function the reaction yield. Response Surface Met...
Autori: Andrei Ionuţ Simion
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27551

Among the organic pollutants, the chlorinated phenols represent an important class of compounds having a stable world market of ca. 100 kt per year. Due to their aryl structure and presence of the chlorine atom, chlorinated phenols are exceptionally recalcitrant toward chemical reactions aimed at their reduction. Adsorption from liquid phase has received special interest due to its flexibility and simplicity in operation. Especially adsorption using activated carbon (AC) has been recognized by t...
Autori: Marius Sebastian Secula
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27552

A simple and efficient method for preparing Ag-doped TiO2 nanoparticles was successfully developed, by associating the sol-gel method and the impregnation-reduction. While titanium dioxide is one of the most used solids as photocatalyst, silver is particularly interesting for applications in biological and chemical detection and for its antibacterial properties. Moreover, in photocatalysis silver acts as an electron sink and donor in capturing the photogenerated electrons. The structural and mor...
Autori: Catalina Nutescu Duduman
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27566

Livestock grazing may have a great effect on both standing vegetation and soil seed bank. The present study investigated the characteristics of the soil seed bank and determined its relationship to the above-ground vegetation in grazed and ungrazed sites in the Hei-wa-wu oxbow wetland of the Yangtze River, China. A total of 3700 seedlings across 59 species germinated from the soil seed bank. Annuals and terrestrial species dominated the soil seed banks of both grazed and ungrazed sites. Grazing ...
Autori: Dong Yang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27569

This work focuses on the analysis of material composition of mixed municipal solid waste (MSW) in the city of Košice, the second largest city in Slovakia, and in the village of Poproč, which is representative of the region. The paper describes the characteristics of the monitored localities, the methodology and the original evaluation procedure. The analysis of the mixed MSW composition in Poproč was performed in 2009-2010, and in Košice in 2011. In both cases, the analys...
Autori: Takáčová Zita
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27570

Environmental quantitative risk assessment requires the development of multimedia modeling tools to address dynamic site conditions at field scale. This work is the second part in a two-part series. A new fuzzy-set enhanced environmental multimedia modeling system (FEMMS) has been presented in Part I. Environmental multimedia modeling often involves a sizeable amount of parameters and data. The challenges have been the difficulties to quantify the uncertainties and to manage the data and main mo...
Autori: Zhi Chen
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27573

• Environmental engineering and Management Journal No. 4    • AN ENHANCED ENVIRONMENTAL MULTIMEDIA MODELLING SYSTEM (FEMMS): PART II – USER INTERFACE AND FIELD VALIDATION    • COST-EFFECTIVENESS OF OPTIMIZING CONCENTRATED FEED BLENDS TO DECREASE GREENHOUSE GAS EMISSIONS    • FATE AND BIODEGRADATION OF ESTROGENS IN THE ENVIRONMENT AND ENGINEERING SYSTEMS – A REVIEW    • ANALYSIS OF THE MATERIAL COMPOSITION OF MIXED MUN...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27577

• Environmental engineering and Management Journal No. 4    • AN ENHANCED ENVIRONMENTAL MULTIMEDIA MODELLING SYSTEM (FEMMS): PART II – USER INTERFACE AND FIELD VALIDATION    • COST-EFFECTIVENESS OF OPTIMIZING CONCENTRATED FEED BLENDS TO DECREASE GREENHOUSE GAS EMISSIONS    • FATE AND BIODEGRADATION OF ESTROGENS IN THE ENVIRONMENT AND ENGINEERING SYSTEMS – A REVIEW    • ANALYSIS OF THE MATERIAL COMPOSITION OF MIXED MUN...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27576

Groundwater pollution investigation near old and closed landfill sites is increasingly attracting more attention. Nitrogen compounds, especially those leached from the landfill area, are often regarded as a main pollution source for the groundwater. This study investigated the nitrogen pollution in the groundwater near a closed old landfill area of Beijing, China. The field investigation showed that the nitrate-polluted groundwater was determined as Class VI (refers to bad quality) at the detect...
Autori: Jun Wu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27585

The selection of the favourite elementary watershed for a hill reservoir needs the association of all the essential criteria and all the interested decision makers. A geographical information system (GIS) is a strong tool for studying spatial data but it does not offer an appropriate decision making methodology. Due to their spatial aggregation functions, Multicriteria Analysis (MCA) methods can simplify decision making in situations where various solutions are available, and when several criter...
Autori: Mohamed Zaoui
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27594

This paper presents the research on the temporal variability of water quality parameters for the most important river system in Romania and Europe – Danube River. The data on the river water quality had been obtained during ten years. The investigation was systematic and complex. Using the Kolmogorov-Smirnov test, and traditional statistical methods based on correlation matrix - Principal Component Analysis (PCA) and Factor Analysis (FA), and ANOVA all the samples data sets were classified...
Autori: Paula Popa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27601

Neural networks are a series of simple mathematical models, created on the architecture of human brain which gives a superior capacity of learning based on numerous connections established among neurons. The artificial neural networks have strong units of processing which are characterized by an extreme simplicity, but because of their whole interaction, the results are complex. The paper presents the comparison of two methods: mathematical regression and artificial neural network, used for pred...
Autori: Daniel Lepadatu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27608

The present work aimed to optimize a new economic medium for biopolymers production by Rhizobium leguminosarum. Biopolymers were poly-β-hydroxybutyrate and exopolysaccharide (EPS and PHB). They were extensively used in various industrial sectors. Statistical experimental designs and Response Surface Methodology were employed to optimize the medium components. A central composite design was applied to increase the production yield and predict the optimal values of the selected factors. An op...
Autori: Mohamed Sellami
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27609

The study of binary biosorption of Pb(II) and Cu(II) was performed by pine nuts shell. Results were compared with the single biosorption of Pb(II) and the single biosorption of the Cu(II). Experiments were performed in batch stirred and in a continuous system. The presence of lead caused a slightly decrease of the copper biosorption yield and can be related to the copper equilibrium uptake. This antagonistic action can be related to competition phenomena between metal ions in solution for active...
Autori: Gabriel Blázquez
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27611

This study was conducted on samples taken from the “Fagul Cetății – Iazul nr. 4” tailings pond in the Eastern Carpathians, Romania and is focused on exploring the way in which heavy metals from sulphide rich material are spatially distributed in relation to the geochemical conditions. For comparison, concentrated ore samples from the same area, genetically linked to the Tulgheș lithogroup were also analysed. The mineralogical and chemical composition of the sampl...
Autori: Sorin-Ionuț Balaban
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27626

The paper describes the main results from a study of cement bound mixtures for road foundations with the aggregate matrix consisting of industrial wastes, i.e. foundry sands (FS), electric arc furnace (EAF) steel slags and bottom ash from municipal solid waste incineration (MSWI), combined in five different proportions. The laboratory investigation involved a preliminary analysis of the chemical, leaching, physical and mechanical properties of the industrial wastes, followed by a mechanical char...
Autori: Marco Pasetoo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27645

Recycling of solid plastic waste composed of post-consumer mixed polyolefines (polypropylene and polyethylene) was carried out by injection moulding of secondary material streams. The materials have been characterized by melt flow index (MFI), tensile, bending and impact measurements, density and differential scanning calorimetry (DSC). The sink-float technique was used to separate the polyethylene fraction, which was then blended into virgin polyethylene at different ratios and processed anew. ...
Autori: Laurens Delva
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27646

Five indigenous soil microbes were isolated from chickpea rhizosphere soils of different location of Jaunpur, Mirzapur, Varanasi and Azamgarh district of eastern Uttar Pradesh. The microbial strains were identified as Pseudomonas aeruginosa BHUPSB01, Pseudomonas putida BHUPSB04, Bacillus megaterium BHUPSB14, Paenibacillus polymyxa BHUPSB16 and Mesorhizobium sp. BHURC05 by biochemical and molecular characterization. The isolated strains were tested for their plant growth promoting properties....
Autori: Jay Prakash Verma
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27654

Magnesium wastes are among the gradually ascending and therefore challenging metal wastes, which are produced by many industrial activities. The purpose of this study is the usage of magnesium waste, a raw material in magnesium borate production by hydrothermal synthesis. Boron sources (boric acid (H3BO3) and boron oxide (B2O3)) react with magnesium wastes in order to synthesize the magnesium borate mineral of admontite (MgO(B2O3)3ꞏ7(H2O)). In addition to the synthesis from waste magne...
Autori: Azmi Seyhun Kipcak
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27657

In this study, the concentrations of 15 phenol derivatives were analyzed from the phreatic and groundwater wells surrounding a decommissioned chemical factory in a village from the western part of Romania. An UPLC-MS method was used to assess the concentrations of the chemical target compounds in the water samples. The most frequent compounds were 4-chlorophenol, 4-tertoctylphenol and 4-nonylphenol, being detected in 17 of the 19 sampling sites, while the least frequent compound was 2,4,6- t...
Autori: Elena Preda
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27661

Bacillus thuringiensis (Bt) is a spore-forming bacterium which produces insecticidal crystal protein in the sporulation phase. Polymerase chain reaction (PCR)-based identification of Bacillus thuringiensis toxin genes has become a routine step in most B. thuringiensis isolation and characterization initiatives. In the present study, eighteen native Bt isolates from diverse habitats of North India were taken for the presence of cry1 type genes. The distribution of cry1 gene families in native ...
Autori: Shiv Shankar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27666

The landfill reclamation project took place in the period from 2008 to 2009. Forestry reclamation was carried out in 2009. The aim of this project was to establish the growth of particular plant species, quantify plant species survival and changes in species properties over time. A phased approach was utilized to evaluate the technical and economic feasibility of the reclamation project; based on the results of these evaluations, in 2011 approximately 90 % of plant species survived during the...
Autori: Magdalena Daria Vaverková
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27668

This study explores the sustainable development of organic farms and organic farming in Taiwan by analyzing leisure services and the relationship between farmers and their entrepreneurial goals. Internet searches were used to identify 120 organic leisure farms in Taiwan with their own websites, which were subjected to content analysis. The researchers then mailed questionnaires to each Taiwanese organic farm for which a full mailing address could be located. A total of 403 valid questionnaire...
Autori: Tsung Hung Lee
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27671

This paper presents an assessment of the toxic compounds released from metalworking fluids (MWFs) used in aluminum solid waste processing and from aluminum slag landfills, and their impact on environmental quality and human health. The mean concentrations of dust, oil mist, aldehydes, volatile organic compounds (VOCs) released from metalworking fluids were determined in machine shops. The exposure in machine shops was quantitatively dominated by VOCs, whose concentrations varied in the range...
Autori: http://www.ecozone.ro/reviste.php?RID=27677

Industrial wastewater is of particular importance. In most wastewater treatments, physicochemical parameters are used to determine the performances which are costly while protozoa can be used as less expensive biological indicators to determine the efficiency of the treatment plant. The purpose of this study was to investigate the relationship between protozoa and physic-chemical characteristics of the Abadan wastewater treatment industry. Samples were collected from wastewater stabilization po...
Autori: Abotaleb Bay
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27694

Atmospheric concentrations of PM2.5 and PM10 were measured in Beirut, Lebanon, for a period of 12 months. The daily average concentrations of PM10 and PM2.5 were found to be 51.3 ± 33.1 and 30.3 ± 9.4 μg.m−3, respectively, with corresponding maximum values of 359.7 and 208.6 μg.m−3. The annual average concentrations of PM10 and PM2.5 exceeded the World Health Organization’s standards by 150% and 200%, respectively. The mean concentration of coarse particles ...
Autori: Wehbeh Farah
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27696

The presence of nitrogen in its reduced forms serves as an indicator of natural aquatic system degradation. The excessive concentrations of nitrogen in reduced forms (NH4+, NO2-) found in the sections of the the Shireutsi (of the Prut River) and the Olaneshti (of the Nistru River) prove that these sites are areas to focus efforts on improving water quality. Laboratory simulations indicate a good environmental buffer action of natural waters to potential pollution in Sculeni and Ungheni sections ...
Autori: Petru Spataru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27698

Novel systems based on modified azo-polysiloxanes and gelatin with potential biological applications were prepared and characterized. Simultaneous rheological and UV irradiation studies allowed evidencing structural modification inside the gelatin matrix. For all analyzed samples a shift in the temperature corresponding to the physical network destructuration, from 30˚C (corresponding to gelatin) to 40˚C (for the composite) was noticed. The experimental results proved the existence of ...
Autori: Elena- Luiza Epure
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27699

• INFLUENCING FACTORS OF THE ACCEPTABLE AMOUNT OF COMPENSATION OF FARMERS FOR CONTROLLING FERTILIZER-INDUCED WATER POLLUTION    • DETERMINATION OF THE RARE EARTH METALS IN THE RED MUD FOR POSSIBLE UTILIZATION    • Fe(II) AND Mn(II) REMOVAL FROM CONTAMINATED GROUNDWATER BY ADSORPTION: A COMPARISON OF ACTIVATED CARBON AND PINE BARK    • RESPONSE OF UPLAND COTTON GENOTYPES TO SALINITY AT EARLY GROWTH STAGES    • KINETICS AND ISOTH...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27782

The quantification of heavy metals in dry and wet weather derived (runoff and snowfall) sediment from roads, under three different environmental conditions, has indeed the potential to allow improved understanding on urban diffuse pollution. With that aim, the reported study determined the concentrations of Cd, Cu, Pb, Ni, Cr and Zn in road sediment, which are reported to be found in elevated level in the road-traffic environment, and associated pollution levels at four different sites, represen...
Autori: Sudip K. Pal
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27776

Geocomposite materials consisting of lightly cemented mixtures of expanded polystyrene beads (EPS) and backfill soils are commonly used as fillers and for the construction of light weight embankments. The constant normal stress (CNS) and constant volume (CV) direct shear parameters as well as the relationship between gradation properties of four residual granular backfill soils and direct shear parameters of lightly cemented mixture of EPS and backfill soils was evaluated. The maximum density an...
Autori: Felix Okonta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27771

Changing wastes into raw materials is one of the most favored options for waste management, as it diverts wastes from landfill and saves resources. Fibers, either vegetable (cellulosic) or synthetic, may be added to cement pastes in order improve the properties of concrete or mortar by reinforcement. At the same time, if the source of fibers is wastes, then such processes make ways for recycling. In the work described here we studied the compatibility of residues from the nonwoven textile indust...
Autori: Hugo Monteiro
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27766

• INFLUENCING FACTORS OF THE ACCEPTABLE AMOUNT OF COMPENSATION OF FARMERS FOR CONTROLLING FERTILIZER-INDUCED WATER POLLUTION    • DETERMINATION OF THE RARE EARTH METALS IN THE RED MUD FOR POSSIBLE UTILIZATION    • Fe(II) AND Mn(II) REMOVAL FROM CONTAMINATED GROUNDWATER BY ADSORPTION: A COMPARISON OF ACTIVATED CARBON AND PINE BARK    • RESPONSE OF UPLAND COTTON GENOTYPES TO SALINITY AT EARLY GROWTH STAGES    • KINETICS AND ISOTH...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27729

• INFLUENCING FACTORS OF THE ACCEPTABLE AMOUNT OF COMPENSATION OF FARMERS FOR CONTROLLING FERTILIZER-INDUCED WATER POLLUTION    • DETERMINATION OF THE RARE EARTH METALS IN THE RED MUD FOR POSSIBLE UTILIZATION    • Fe(II) AND Mn(II) REMOVAL FROM CONTAMINATED GROUNDWATER BY ADSORPTION: A COMPARISON OF ACTIVATED CARBON AND PINE BARK    • RESPONSE OF UPLAND COTTON GENOTYPES TO SALINITY AT EARLY GROWTH STAGES    • KINETICS AND ISOTH...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27730

This study investigated the spatial variability of heavy metal emission patterns and associated measures of contamination on Riccarton Campus at Heriot-Watt University in Edinburgh, Scotland. Road deposited sediments were collected from 12-different sites representing typical urban/sub-urban road layout over a 10 month period covering seasonal variations. The heavy metal concentrations of the road sediments collected from different sites of a road were determined by strong nitric acid digestion ...
Autori: Sudip K. Pal
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27738

This paper focus on how prefabricated building systems can allow the implementation of deconstruction strategies. Prefabricated mechanically fixed components, in comparison with conventional concrete and brick in situ construction, can be more easily separated during demolition, allowing its reuse, and even if this is not possible, at least allowing the recycling or the energetic recovery. It is very important that construction practitioners understand the benefits of the prefabrication. As a wa...
Autori: Joăo Pedro Couto
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27739

Monitoring of air emission and pollution control cost is a key to improve air quality management of electricity generation industry. This research comprehensively evaluates abatement cost of sulfur dioxide (SO2), nitrogen oxides (NOx), emission intensity and emission inventory of sulfur dioxide (SO2), nitrogen oxides (NOx), particulate matter (PM), and carbon dioxide (CO2) emitted from Thailand’s fossil fuel power plants. The research applied bottom-up approach with continuously monitored ...
Autori: Wasin Pinprateep
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27740

This paper aims to pioneer the research into the dry nitrogen deposition in reservoirs serving as drinking water sources. For this purpose, several field experiments were performed to investigate the dry deposition in Xiaotaipingyang, Danjiangkou Reservoir (Henan) from September 2015 to August 2017. Sample concentrations were measured for NH4+-N, NO3--N and total dry deposition (TDN). Then, dry deposition flux of NH4+-N, NO3--N and TDN were estimated based on the measured concentrations and samp...
Autori: Luo Ling
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27749

The Anzali Wetland, is located in south west of the Caspian Sea, is one of the most important aquatic ecosystems in Iran. In recent decades much domestic and industrial untreated wastewater has been deposited in the wetland. This study was done to obtain a preliminary assessment of heavy metals contamination in the wetland sediments. Tests were done to determine levels and distribution of the heavy metals Cd, Cr, Cu, Pb, and Zn in surface sediment of the wetland. Results showed that averages of ...
Autori: Maryam Panahandeh
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27753

The probabilistic estimation and the risk analysis of the exposure to pesticides through the ingestion of plants and food products is an important task for ensuring informed decision making and appropriate consumer protection. Monte Carlo-based methods are powerful tools in this regard, allowing for the empirical estimation of the distribution of exposure values, as well as for carrying out a corresponding uncertainty analysis. Such findings are important for assessing the exposure risk for mult...
Autori: Petronela Cozma
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27754

Many ecotourism destinations unfortunately tend to become unsustainable and even self-destructive due to inappropriate environmental assessments. On the other hand, because of the increasing people’s willingness to tourism and relaxation, it is necessary to select and introduce new regions for tourism. To do this, the application of relevant criteria can be a profitable method. The purpose of this study is to identify nature-based tourism activities and also site selection for them in Sisa...
Autori: Sedigheh Babazadeh Khameneh
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27755

Leachate production and management are recognized as one of the greatest problems associated with environmentally operations for landfills. Variations in leachate quality and quantity are related to rainfall depth and its infiltration processes into landfill. This work examines important hydrological problems of the Scarpino site (Genoa, northern Italy), a garbage dump which covers the valley of a first order flash creek with a surface of 100 hectares, located in one of the rainiest area of Ita...
Autori: Marco Mancini
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27788

The research has been focused on concretes in which the continuous phase is some kind of polymeric resin and the discrete phase is some type of mineral aggregate. Such composite materials are known as Polymer concretes (PC) and boast several advantages such as lower weights, higher resistance to corrosive environments and chemical attacks, faster curing and lower permeabilities. In PC the inorganic fraction can reach up to 90% of the total and is made up of aggregates such as sand and gravel. Th...
Autori: Paolo Pozzi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27799

Activated sludge (AS) is the mainly used biological process in water treatment; therefore, assessing the influence of various operating conditions on this process is relevant. This study aimed to evaluate at laboratory-scale the influence of the gas-to-liquid volume ratio (RG/L) and the stirring speed (SS) on the biodegradation of carbamazepine (CBZ) by activated sludge. For this purpose, a central composite design (CCD) was used in association with response surface methodology (RSM). Batch cult...
Autori: Samer Semrany
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27869

Heavy metals are inorganic persistent pollutants with adverse health and environmental effects. In our study, self-synthesized iron oxide magnetic nanoparticles were encapsulated in the Phanerochaete chrysosporium (P. chrysosporium) hyphae. The prepared biosorbents possessed high efficiency for Pb(II) biosorption from single and binary metal systems. The maximum biosorption capacity was found to be 50.05 mg g–1 at pH 5.0. Environmental scanning electron microscope accompanied with energy d...
Autori: Danlian Huang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27864

The study performs an approach to the "environment - life quality - biotechnological molecular gastronomy" direction, an axis with consistent theoretic and practical potential in offering attractive and pleasant culinary products for the consumers, with the same effect on health as supplementary under pharmaceutics format. The paper proposes a change of paradigm, in order to develop certain excellence gastronomic preparations, based on incorporating functional and/or nutraceutic foo...
Autori: Romulus Gruia
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27855

According to “polluter pays” principle, there is huge burden on the industries to remediate contaminated sites. Mergers and acquisitions of industrial sites is a preferred mode of growth for corporations. The management of the acquiring company should be mindful of potential environmental risks which they may inherit as part of the acquisition and take appropriate risk management actions. If not, they may face financial, reputation and other liabilities due to the “polluter ...
Autori: Shweta Gaur
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27854

The aim of this study is to investigate a variety behaviors of two kinds of media (multiple-layer structures and multiple-layer structures combined with surface treatment, such as finer fibers) with ages using a scanning electron microscope (SEM) and to determine the effect of fabric microstructures on cake formation and pulse cleaning. The results show that fine particles are readily deposited on the surface and inside depth filter medium. The fine fibers with diameters (~0.08 microns, this val...
Autori: Yan Cuiping
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27842

Within this study a total content of 20 elements was determined in 25 soil samples taken from the vicinity of the "Buchim" mine, Republic of Macedonia, covering an area of 14.2 km2. The results have been compared to new Dutchlist and NOAA standards and it was concluded that the content of As, Cd, Cu, Pb and Zn in most of the samples is over the corresponding optimal or action values probably due to the anthropogenic activities. Thus As values ranged 13.1-225 mg kg-1 with 20 above the o...
Autori: Todor Serafimovski
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27844

In this paper a two stage bench scale leaching procedure is used to assess the heavy metals release from a wood-based fly ash of a 5.0 MWth grate-fired boiler. In the first step mostly K was leached with water. In the subsequent acid leaching step heavy metals were leached at a pH of 3. The remaining solids were agglomerated together with the bottom ash and the dried K-concentrate from the first leaching step whereas the filtrate was treated before discharge. In the agglomerates produced the ...
Autori: Christof Lanzerstorfer
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27875

The Danube River forms one of the largest and most complex deltas at the Black Sea, being a Biosphere Reserve, UNESCO World Heritage and Ramsar site. This study assesses the spatial variability of arsenic contamination of the water in the Danube Delta. Water samples were collected during all seasons in 2013 from the south-east of the Danube Delta and analyzed through HG-AAS method for arsenic. Data were handled using two different approaches. First, a complex hydrological model was compiled, ...
Autori: Gabriel Gati
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27884

A study on the biodegradability of several formulations based on poly[vinyl alcohol] (PVA) and wood flour has been carried out. Basically, all formulations are based on PVA and wood flour, and the influence of starch, glycerol and/or polyvinyl chloride (PVC) incorporated in some of them was investigated. Biodegradation was performed by incubation of the composites with a selected Aspergillus niger strain able to act as an polymer biodegrading agent. The composites biodegradation was evaluated...
Autori: Luiza Jecu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27886

Advanced oxidation process is getting tremendous importance in the treatment techniques for the removal of nonbiodegradable organics from wastewater due to its ability to completely mineralize the pollutants. It uses different methods to produce hydroxyl radicals which are responsible for oxidation of pollutants. In this work, studies on Fenton, ultraviolet radiation (UV) and UVhydrogen peroxide processes for removing acetamiprid, a neonicotinoid insecticide from aqueous solution are carried ...
Autori: Puthenkattil Abdukunji Fasnabi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27895

This paper presents the results of theoretical estimations of the quantity of landfill gas (LFG), as well as the energy potential of Cell A from the municipal landfill in Oradea city, Romania, based on a mathematical model. Considering three scenarios for LFG recovery according to the capture system efficiency, the following LFG theoretical flows have been obtained: 157 m3LFG/h for 45% recovery efficiency; 209 m3LFG/h for 60% recovery efficiency; and 297 for 85% recovery efficiency, respectiv...
Autori: Gerardo Collaguazo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27903

Considering world energy demand and its security, much attention has been focused on identifying promising lignocellulosic substrates to generate a variety of downstream fuels and chemicals. In response, a recent key research area has centered on hydrolysis of cell wall polysaccharides by various physical, chemical and biological means. Due to their complex chemical and molecular structure, there is a substantial knowledge gap in understanding of biomass recalcitrance and its relationship wit...
Autori: Nadeem Akhtar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27908

In this study, Mg-doped ZnO nanoparticles with 2% Mg content were synthesized by sol-gel method. The structure and morphology of the nanoparticles were characterized by TEM, BET and UV-Vis absorbance techniques. From TEM image, it was found out that the nanoparticles had uniform size and uniform distribution. BET analysis revealed that in comparison with pure ZnO, Mg 2%/ZnO nanoparticles had a higher specific surface area. Based on UV-Vis absorbance analysis, Mg 2%/ZnO nanoparticles shifted t...
Autori: Nahide Zarei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27909

In this work, the examination of separation of gypsum from wastewater generated during the machining of casts and the method of waste gypsum management have been presented. This waste gypsum is produced in Ortolab Poland facilities. Gypsum casts are cut and ground in water-cooled circular saws. Wastewater, with over-normative content of suspension, 10000 mg L-1 and sulphates, 1600 mg L-1 is produced in the process. The analysis of water and wastewater management in Ortolab Poland facilities l...
Autori: Ewa Liwarska-Bizukojc
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27910

This paper presents the results of a case study conducted between 2.04 and 24.04.2013 in order to establish the most relevant indicators that characterize the influence of outdoor air pollution, with particulate matter having a nominal diameter less than 2.5μm (PM2.5), on the quality of indoor air from a new building. The tests consisted in simultaneous determination of the daily average PM2.5 concentrations at four indoor sites and at one outside, nearby the building. The average PM2.5 c...
Autori: Elena Bucur
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27914

Among all the prominent contributors of municipal solid waste (MSW), schools have been chosen for the study since the rate of solid waste generation and its respective composition has not been reported or rather has been underestimated in the schools of Puducherry region. Hence, the present paper is an attempt to fill up this gap in our knowledge. The existing waste management system in selected schools was unsystematic and relatively scarce to meet the waste management objectives in precise ...
Autori: Rajamanikam Ramamoorthy
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27921

During the 2014-2015 period of environmental air quality research, concentrations of NO2, SO2 and BTEX (benzene, toluene, ethylbenzene and xylenes) and PM10 were measured. In order to evaluate the spatial distribution of pollutants, 5 sampling sites in Anykščiai city (Lithuania) were chosen. Measured values of NO2, SO2, PM10 and benzene were compared with limit values set for these pollutants in ambient air according to 2008/50/EC and 2000/69/EC directives. Toluene, ethylbenzene, ...
Autori: Dainius Paliulis
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27926

Agro-industrial waste are seen as potential precursors in the development of adsorbents for the removal of phenolic compounds, which exhibit a harmful effect to human health due to their high toxicity. This work evaluated the use of coal prepared from coconut tree agro-industrial waste, for the adsorption of phenol in aqueous solutions. Three coal samples were prepared as follows: carbonized only (Cb), activated with synthetic air (Cair) and activated with CO2 (CCO2). Based on the results of ...
Autori: Marta Duarte
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27937

Multivariate statistical methods such as factor analysis (FA) and cluster analysis (CA) were applied to identify the main factors and pollution sources affecting on the water quality of Danube River and to evaluate spatial and temporal similarities or dissimilarities among the sampling sites and monitoring periods. Water quality of 14 parameters has been considered in four sampling stations during 1 year period. The results of factor analysis specified three factors representing 64.369% of th...
Autori: Alhassan H. Ismail
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27939

Removal of excessive ammonium nitrogen (NH+4-N) from aqueous solution has been of considerable concern for several decades. It can be removed by air stripping, a necessary prerequisite is adding enough alkali. This study presented the first attempt to investigate the potential use of ceramsite coated with magnesium hydroxide (CCMH) on the effectiveness of NH+4-N removal coupled with air stripping at ambient temperature without alkali addition. The results showed that the CCMH coupled with air...
Autori: Tianpeng Li
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27940

• ENVIRONMENTAL CHANGES IN NORTH-EASTERN ROMANIA – A TRIGGER FACTOR FOR LYME DISEASE    • HYDROGEOCHEMISTRY AND ENVIRONMENTAL ISOTOPE COMPOSITIONS AND THEIR EVOLUTION IN GEOTHERMAL GROUNDWATER IN YIZHANG, HUNAN PROVINCE, CHINA    • CONSTRUCTION OF A BIOGAS HEAT STORAGE GREENHOUSE ECOSYSTEM UNDER THE CONTEXT OF WATER POLLUTION RESULTING FROM LIVESTOCK BREEDING    • ENVIRONMENTAL NOISE: HEALTH AND POLICY - AN UP TO DATE MINIREVIEW  &nb...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27946

• ENVIRONMENTAL CHANGES IN NORTH-EASTERN ROMANIA – A TRIGGER FACTOR FOR LYME DISEASE    • HYDROGEOCHEMISTRY AND ENVIRONMENTAL ISOTOPE COMPOSITIONS AND THEIR EVOLUTION IN GEOTHERMAL GROUNDWATER IN YIZHANG, HUNAN PROVINCE, CHINA    • CONSTRUCTION OF A BIOGAS HEAT STORAGE GREENHOUSE ECOSYSTEM UNDER THE CONTEXT OF WATER POLLUTION RESULTING FROM LIVESTOCK BREEDING    • ENVIRONMENTAL NOISE: HEALTH AND POLICY - AN UP TO DATE MINIREVIEW  &nb...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27947

• ENVIRONMENTAL CHANGES IN NORTH-EASTERN ROMANIA – A TRIGGER FACTOR FOR LYME DISEASE    • HYDROGEOCHEMISTRY AND ENVIRONMENTAL ISOTOPE COMPOSITIONS AND THEIR EVOLUTION IN GEOTHERMAL GROUNDWATER IN YIZHANG, HUNAN PROVINCE, CHINA    • CONSTRUCTION OF A BIOGAS HEAT STORAGE GREENHOUSE ECOSYSTEM UNDER THE CONTEXT OF WATER POLLUTION RESULTING FROM LIVESTOCK BREEDING    • ENVIRONMENTAL NOISE: HEALTH AND POLICY - AN UP TO DATE MINIREVIEW  &nb...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27968

In order to highlight the impact of environmental pollution for Romanian nursing mothers we evaluated the concentration of heavy metals and trace elements in their blood and breast milk. The evaluation was done taking into account the pollution level of mother’s residence: Bucharest (an industrial and heavy transited town, identified as the highly polluted area) and a small town (without industrial plants, identified as less polluted area). The determination of heavy metals and trace eleme...
Autori: Larisa Prioteasa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27973

The aim of this article is to demonstrate for one relevant case study how to make a correct waste classification according to the harmonized European laws facing different issues according to the waste type. Waste hazard characterization should be based on data about waste source/origin, waste producing process, waste description, data on the waste appearance, composition as well as results from tailored prescribed analytical tests to complement the necessary information in different producer&rs...
Autori: Lidia Kim
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27976

In this paper, we determined some mechanical properties of a new category of green composites, based on tensile tests. More precisely, we selected a set of samples from a new bio-resin based on Dammar and two sets of samples from green-composites with matrix by bio-resin and reinforced with almost compact layers of Typha latifolia or Schoenoplectus lacustris. For these built materials, we obtained the characteristic curve, tensile strength, percentage elongation after fracture and elasticity mod...
Autori: Ion Ciucă
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27980

In this paper, several image analysis techniques have been applied aiming to obtain useful information regarding the processing of municipal solid waste polymers. An automated color extraction method has been applied in order to quantize the color distribution in the polymer wastes aiming their resource and time-efficient separation according to their color. Also, by processing different density fractions from the polymer waste the color of the final material has been predicted, as well as th...
Autori: Silvia Patachia
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27994

This paper aims to disclose the quantitative relationship between benthic diatom biomass in natural rivers and environmental factors. For this purpose, the author selected seven natural rivers in the basin of Minjiang River as the objects. First, the samples of benthic diatoms and the environmental factors were collected from 14 different sampling sites of five rivers and the diatom density and Chlorophyll a (Chl a) content were selected to characterize the diatom biomass. Then, the number of...
Autori: Baichuan Zhang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28001

The paper reports on the preparation of polysiloxane hydrophobized viscose-maghemite/goethite magnetic composite with properties appropriate for uses in oil spill sorption from polluted aqueous media. A multi-step procedure was employed to obtain the polymeric composite. The structures of the prepared samples and precursors were analyzed by Fourier transform infrared spectroscopy (FTIR), whereas their morphology was investigated by means of scanning electron microscopy (SEM). The hydrophobic...
Autori: Răzvan Rotaru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28008

Dairy wastewater has been a major environmental concern because of massive effluents characterized by high pollution load. This study reports the influence of initial pH (pHi), residence time (τ) and elapsed time (t) on the %COD removal (Y1) and specific energy consumed (kWh per kg of COD removed, Y2) for real dairy industry wastewater treatment in continuous stirred tank electrochemical reactor (CSTER) using aluminum electrodes. Central composite design (CCD) was applied for designing th...
Autori: Poonam Kumari
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28011

This paper analyzes the fundamental principles of the substitution of strip coal pillars with coal refuse through the combination of theoretical analysis, physical simulation and numerical calculation with engineering practice. We propose to lay out roadways through strip coal pillars in a reasonable manner so as to produce a “coal-rock bearing mass” consisting of stowboards (i.e., roadways backfilled with coal refuse) and coal pillars that substitute the original strip coal pilla...
Autori: Qiang-ling Yao
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28014

Sustainability and renewability in constructional materials and also utilization of such materials for various engineering purpose is the need of the hour. Green retrofitting with the aid of green fibre reinforced polymer (FRP) materials, made up of natural bio fibres like sisal would contribute to sustainable development. Non fossil-fuel carbon precursor organic fibres, i.e. sisal FRP composites were used for retrofitting of reinforced concrete (RC) beams, designed to undergo shear failure. ...
Autori: Tara Sen
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28025

Trace elements (TEs) in contaminated soils are considered as primary jeopardy issues in developing countries which can cause major concerns for this industry and also menace the surrounding ecosystems, human health and wildlife, so urgent reclamation methods are required. The present research aims to evaluate potential phytoremediation capability of selected plant species Tamarix Spp., Haloxylon Spp. and Malcolmia Africana to grow in TE contaminated soils. Muteh Gold mine, a widespread mountaino...
Autori: Ali Daryabeigi Zand
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28056

Since the middle of the past century, when the synthetic fibers began their rise, wool has steadily lost importance in the textile sector, and now is a marginal fiber on the textiles market. Great amounts of non-marketed raw wool have turned from an income source for sheep farmers into a problematic waste, which is, at best, burn or landfill. With increasing interest for sustainable use of natural resources, wool was reconsider as an underrated, underused renewable resource, worthy of a bette...
Autori: Hossein Rajabinejad
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28031

A simultaneous hierarchical classification of groundwater in the Banat Plain-southwestern Romania and associated characteristics such as As(III), As(V), total As, trace metals (Al, Cd, Cr, Cu, Fe, Mn, Ni, Pb, Zn), pH and redox potential using Fuzzy Hierarchical Cross Clustering Algorithm was carried out. In samples containing more than 10 μg/Ltotal As (13.9 – 77.3 μg/L), the As(V) species represented 57±20% and 73±18% in the others. Arsenic speciation pattern was in agr...
Autori: Marin Senila
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28059

The development of green eco-friendly inhibitors for the corrosion of metallic surfaces in acid media is still considered as a major challenge and target for corrosion-mitigation engineers. We have prepared in this work 4 different extracts from the plant Ruta Chalepensis using methanol, chloroform, ethyl acetate, and aqueous ethyl acetate solvent systems. The flavonoids content, as well as the other oxygenated compounds, in the 4 extracts was carefully screened using the gas chromatographic&nda...
Autori: Meryem Amal Benghalia
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28063