Contine urmatoarele articole:??Â?Â? Alternative energy sources in transition countries. The case of bioenergy in Ukraine??Â?Â? Catalytic destruction of aromatic VOCs on SCR-DeNOx commercial catalyst??Â?Â? Ecological Economics And Transport Systems??Â?Â? Bioleaching of uranyl ions from uranium ores by some algae??Â?Â? Irreversible affinity immobilization of lentil seedling??Â?Â? Evaluation of artificial neural network techniques for river flow forecasting??Â?Â? Hydrogen and sustainable energy. Re...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25194

AbstractEcological economics is an emerging field that offers significant room for creativity and innovation at the conceptual level on how to operationalize sustainability. It integrates economics with ecology and many elements from both the natural and social sciences to provide an integrated perspective on environment-economy interactions. A major policy dilemma that ecological economics addresses is how policy-makers can influence markets, so that they receive the 'right' signals from the na...
Autori: Kes McCormick
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25106

An aliphatic-amine-bearing chromatographic support, based on commercial silica, was prepared and tested as potential matrix for affinity immobilization of a copper/topaquinone-containing amine oxidase from lentil seedlings. The support proved to be noticeably effective in immobilizing the enzyme with concomitant purification and activity retention. The immobilization yields and some properties of this preparation were also determined and compared with those of the soluble enzyme. High activity r...
Autori: Barbara Noli, Enrico Sanjust, Francesca Sollai, Giovanni Floris
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25108

River runoff forecasting is one of the most complex areas of research in hydrology because of the uncertainty of hydrological and meteorological parameters and scarcity of adequate records. Artificial neural networks (ANN) can be an efficient way of modelling stream flow processes as it is capable of controlling and modelling nonlinear and complex systems and does not require describing the complex nature of the hydrological processes. In this study, daily river flow is forecasted using two ANN ...
Autori: Cintia Bertacchi Uvo, Dimitri Namgaladze, George Gabitsinashvili
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25110

Abstract Hydrogen could be considered a synthetic secondary power carrier fuel in the years to come, subsequent to the fossil fuels economy. Thus the concept 'hydrogen economy' shall be defined, and it will also have a great influence in the future years.The field of power generation (producing electric power), transports, (electric cars), chemistry (hydrogen is a major raw material) are potential users of hydrogen.The experts support, by means of a series of economical and strategic analysis ma...
Autori: Corina Rădulescu, Elisabeta Păsculete, Florentina Condrea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25111

The great variety of available Solid Waste Management System (SWMS) models, along with a plethora of continuously developing technological advancements in the design and operation of the treatment facilities and collection and transport schemes, the continous updating of national (and/or European) regulations on waste management and the increased computer literacy and availability, renders the selection of a SWMS model a complex endeavor. From the view point of a municipality, the following ques...
Autori: Demetrios Panagiotakopoulos, Konstantinia Tsilemou
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25115

Liquid petroleum fuel products such as High Speed Diesel (HSD), Superior Kerosene Oil (SKO), Motor Sprit (MS) are stored in floating roof tanks under atmospheric conditions. The Storage tanks are provided with fittings like rimseals, gauge float wells,sample ports, deck drains and access hatches and becomes the sources of hydrocarbon vapour emissions released to the atmosphere. The net throughput and the annual turnovers of the fuel products and annual average meteorological conditions were cons...
Autori: Bandari Chakradhar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25117

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

The use of gasoline oxygenated with MTBE (methyl tert-butyl ether) reduced significantly air pollution (16 - 23% lower emissions of CO and 18% lower emissions of unburned hydrocarbons) but increased water pollution. There is no European or national regulations for MTBE in drinking water except for Denmark, which has set a limit value of 30 Âľg/ L for MTBE. USEPA proposed a maximum concentration of 20- 40 Âľg/L. This paper is a review with 70 references on the MTBE production, use, properties and...
Autori: Camelia Beţianu, Florina Ungureanu, Loredana Branza, Lucian Vasile Pavel, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25122

In recent years the removal of toxic substances especially heavy metals from water and wastewater by using of non-conventional low-cost sorbent (industrial wastes and some natural material including microorganisms, plant-derived materials, agricultural products and by-products, mineral oxides, clays) has received much attention. In this paper efficiency of Zn (II) removal from aqueous solutions by sorption onto Romanian sphagnum peat moss was studied in batch experiments involving process parame...
Autori: Angelica Kicsi, , Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25126

This paper brings a review on the trends of arc plasma reactors, in the new millennium, as an alternative contribution to the reduction of carbon emission at global level. The development of technically and economically feasible plasma processes for the production of hydrogen is analyzed. Literature provides data on achievable intensification of the involved chemical processes comparing with those from the classic reactors. The hydrogen production is studied starting from hydrocarbons and alcoho...
Autori: Iulian Rusu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25128

The Kyoto target for Romania was to reduce its carbon dioxide emissions by 8 % from the 1989 levels. The 1989 emissions were around 260 million tones. In 2000 the net CO2 emission - some 125 million tones - were 54% of the net CO2 emission in the reference year -1989, leaving some 115 million tones as a reserve or as a tradable resource to other countries that can not met their Kyoto targets. Assuming that Romania will sell 100 millions tones of its extra quota in accordance to Article 17 under ...
Autori: Ciprian Sebastian Munteanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25129

AbstractThe Kyoto target for Romania was to reduce its carbon dioxide emissions by 8 % from the 1989 levels. The 1989 emissions werearound 260 million tones. In 2000 the net CO2 emission - some 125 million tones - were 54% of the net CO2 emission in the reference year -1989, leaving some 115 million tones as a reserve or as a tradable resource to other countries that can not met their Kyoto targets. Assuming that Romania will sell 100 millions tones of its extra quota in accordance to Article 17...
Autori: Koshy Varghese, L. S. Ganesh,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25130

AbstractThis paper reviews some practical aspects of the application of algal biomass for the biosorption of heavy metals from wastewater. The ability of different algal species to remove metals varies with algal group and morphology, with the speciation of specific metals and their competition with others in wastewater, and with environmental or process factors. The scattered literature on the uptake of heavy metals by both living and dead algal biomass - both macroalgae and immobilized microal...
Autori: Loredana Branza, Maria Gavrilescu, Matthew J. Dring
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25133

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 discusses some environmental problems caused by the presence of the copper mining and processing complex in the Bor area (Eastern Serbia). The Bor area is a serious hot spot in Serbia. Unsupervised operation of the mining company RTB Bor, without any protective measures, has led to extreme pollution of the Bor River, the Danube and underground waters, soil pollution with heavy metals, air-pollution with sulfur-dioxide etc. Recommendations are suggested as follows: a sustainable...
Autori: Slavka Zeković
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25137

AbstractFlocculation performance of three chitosan samples with different viscosities (?§ = 400, 800 and 1000 mPas) and two strong synthetic polycations of integral type (PDADMAC and PCA5) on two model aqueous suspensions (kaolin and bentonite) was investigated. The flocculation results indicated that all the polycation samples were efficient in the kaolin flocculation, the turbidity being completely removed at approximately the same polycation dose; the flocculation window ranged between 2.7 an...
Autori: Ecaterina Stela Dragan, Luminita Ghimici, Marcela Mihai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25201

AbstractThe goal of this paper is to examine the potential for ecologically and economically sustainable kraft pulp mills. This paper reviews technical and scientific literature on a wide range of factors that will influence the overall impact of a pulp mill on its total environment. The emphasis is on efforts to achieve "closed-loop," or Totally Effluent Free (TEF) mills which eliminate all liquid effluent and minimize the quantity and environmental impact of air and land discharges. An attempt...
Autori: Adrian Puitel, Dan Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25202

AbstractMicrobial flora is an indicator of the environmental potential of allowing the air-transmitting infections. The paper presents the determination of micro-flora from public indoor spaces and hospital wards in an urban zone. There were used the following sampling and insemination methods: harvesting by sedimentation (Koch method) and harvesting by aspiration, filtration methods, barbotage method, impact method, electro-precipitation method and biotest Hycon. Air micro-flora determinations ...
Autori: Capatina Camelia, Cristinel Racoceanu, Gheorghe Lazăr
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25139

AbstractE-waste is a new term coined in the market of hazardous substances. It has taken a new bourgeoning route since the boom of Information Technology (IT). The problems regarding the transportation, handling and dispose have to be tackled at the earliest as it might cause detrimental effects on environment. Presently in India there is no distinct and lucid regulation(s) regarding e-waste management. There should one stop solution! In the present paper, some of the Technical and E-Management ...
Autori: Santosh M. Avvannavar, Surathkal Shrihari
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25142

This study presents an evaluation of the catalytic performances of Fe containing clay-based catalysts for the wet hydrogen peroxide catalytic oxidation (WHPCO) of 4-chlorophenol (4-CP) aqueous wastes. The catalysts were prepared by well-established techniques, their properties being determined by DRX, BET and chemical analysis techniques. All the tests were performed on a laboratory scale set-up. The ion-exchanged clays were the most active catalysts (100 % 4-CP and 84 % COD removal for Fe-Mt) b...
Autori: , Cezar Catrinescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25157

AbstractThe paper analyzes some aspects of waste management in Romania and, in particular, in Iasi County, in view of the European perspective. Urban and rural waste management is considered and collection, transport, processing, recycling or disposal of waste materials is discussed relative to the National Waste Management Strategy and the National Plan for Waste Management, as well as European and national legislative framework.It was showed that land disposal will continue to be a disposal op...
Autori: Ana-Maria Schiopu, Ion Apostol, Maria Gavrilescu, Monica Hodoreanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25203

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

AbstractMunicipal solid waste (MSW) management is an important and challenging issue for sustainable development. It is also one of themost controversial problems and a subject of an ongoing debate between different interested parties. A particularly controversial issue is MSW incineration (with or without energy recovery) which has in many countries become a socially unacceptable option for dealing with solid waste. On the other hand, the increasing amounts of waste each year demand immediate a...
Autori: Adisa Azapagic
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25147

The article presents the principles on which the upgrading of the ground and surface water treatment plants, respectively the implementation of new technologies are based. The outcome obtained in Timisoara consequently to applying the aforesaid principles and the strategies for the improvement in drinking water quality are also provided....
Autori: Ilie Vlaicu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25151

AbstractThe mechanisms in the shaping of organic food in Denmark since the 1970'ies are analysed as a contribution to the discussion of strategies for a more sustainable production and consumption of food. The background is the major  achievements in Denmark within organic food since the 1970'ies, but also the recent years' reduction in the land converted to organic farming. The analyses are based on experiences from projects, analyses and literature and draw on innovation theory and theory...
Autori: Michael Sogaard Jorgensen
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25153

In this work, the ability of Romanian peat for sorption of Pb (II) ions from aqueous solution has been determined using the batch experimental techniques. The sorption equilibrium has been studied at different pH values. The equilibrium adsorption level was determined to be dependent of the pH of solution and initial Pb(II) concentration.The equilibrium adsorption capacity of Romanian peat sorbent for lead has been described by seven types of mathematical model isotherms, namely: Freundlich, Lan...
Autori: Brindusa Robu, Corneliu Cojocaru, Laura Bulgariu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25160

In recent years, the release of volatile organic compounds (VOCs) has received much attention. Catalytic oxidation of VOCs, found in small concentration in industrial gas emissions constitutes an alternative for environmental pollution reduction.In this paper, a comparative study regarding the non-catalytic and catalytic oxidative destruction of non-halogenated or halogenated C6 hydrocarbons (C6H14, C6H12, C6H6, Cl-C6H5, Br-C6H5), is presented. Catalytic oxidation was studied in the presence of ...
Autori: Florin Bandrabur, Heinz Koser, Ion Balasanian, Liliana Lazar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25162

Contain all the articles from this issue Risk assessment and management - tools for sustainable developmentMaria GavrilescuSustainable alternatives for petrochemical wastewater managementCarmen Teodosiu, Lidy E. Fratila-ApachiteiThe role and the place of oxidant reagents in wastewater treatmentIoan RoscaEnvironmental Psychology, a new direction in the psychological fieldCarmen Catalina IoanChanging concepts of high performance to socially sustainable organizationCostache Rusu, Nerida DavisU...
Autori: Abdelnaser Omran
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25166

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/01 -- Environmental Engineering SectionThermodynamic and kinetic study of gas desulphurization by adsorption on zeolites  Ion Untea, Dan Brasoveanu, Madeleine Dancila, Szidonia Bocskor Mixed oxides derived from vanadium substituted layered double hydroxides as catalysts precursors for SO2 oxidationGabriela Carja, Ionel Popa, Gabriela Ciobanu, Nicolae Aelenei The impact of energy production on environment in RomaniaCarmen Zaharia, Mioara Sur...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25168

Contain all the articles from this issueConsiderations concerning ecological footprint of RomaniaNicolae Peiu, Matei MacoveanuEffects of some industrial wastes on different plant species in hydroponics experimentsRuxandra Bodarlau, Carmen-Alice Teaca, Valentin I.Popa The pollution index, a new technical tool in water quality assessmentMihai Nicu, Marcel Perjoiu Solid waste management in pulp productionDan Gavrilescu Curricular development perspectives: education for sustainabledevelopmentCarmen ...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25174

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 issueLignin in crop cultivations and bioremediationAlfred Abaecherli, Valentin I. PopaMaterials for intermediate-temperature solid oxide fuel cells and for proton exchange membrane fuel cellsAnnemarie Huijser, Joop SchoonmanAre interfacial biocatalysts important tools for nonpolluting technologies? 2. Immobilization of lipases and their  representative applications Brindusa Dragoi, Emil DumitriuUASB treatment of fruit canning wastewater: pilot-scale invest...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25180

Contain all the articles from this issueNitrous oxide decomposition over Fe-ZSM-5 catalysts prepared by different methodsMircea Teodor Nechita, Ioan Rosca, Daniel Sutiman, Gabriela Apostolescu, Ioan Iordache Geometrical correlation method for global estimation of the ecosystem stateCamelia Popa, Cornel Cojocaru, Matei MacoveanuImmobilized lipases as biocatalysts for organic synthesis 1. Transesterification of ethyl acetate with alcohols in the presence of free Candida antarctica lipase BBrindusa...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25181

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

AbstractThis paper presents the architectures of wireless sensor networks integrated in a complex monitoring system for a waste water treatment plant. Presently is a very expressive trend to use wireless technology for smart sensor network communication. The measurement system avoids manual data storage and an Internet server assures remote access from a station with a Web browser. ...
Autori: Florina Ungureanu, Marcelin Iulian Balasca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25190

Include urmatoarele articole:� Keynote Lectures Energy from municipal solid waste: large-scale incineration or small-scale pyrolysis?� Electrical properties of SnO2-Pt/Al2O3 in reduction atmosphere� Corporate management tools to address sustainability Challenges. A reflection on the progress and difficulties experienced during the last decade� Emerging academic responsibilities and opportunities for promoting regional sustainability� Challenges for integrated water resources management...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25200

? Kinetics considerations concerning the oxidative degradation by photo-fenton process of some antibiotics ? Catalytic wet hydrogen peroxide oxidation of 4-chlorophenol over iron-exchanged clays ? Researches on the negative effects assessment (slugging, clogging, ash deposits) developed at the biomass-coal co-firing ? Contribution to the study of the environmental heritage of a former chemical plant ? Impact of chemicals on derivatives with important therapeutic activity in C...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25376

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

AbstractA new photo-Fenton catalyst has been manufactured from synthetic layered clay laponite (Laponite RD) by the pillaring technique Eight different catalyst samples were prepared: four without thermal aging (WTA) calcined at 523 0K, 623 0K, 723 0K and 8230 K, and other four with thermal aging (TA) calcined at the same temperatures. The activity of the TA- 623 sample was evaluated in the phenol degradation by the photo - Fenton process. The influence of five important operating factors has be...
Autori: Beatrice Iurascu, Ilie Siminiceanu, Miguel Vincente
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25210

AbstractFrom a traditional market economy perspective, the productivity attained when water and land is used for acequias is much lower than the productivity achieved when applying these same resources to urban and industrial uses. An analysis of key stakeholders has indicated that there are cultural and environmental attributes of acequia agriculture landscapes that are not captured in the market-assigned value of acequias. This analysis revealed the motivations behind the value placed on acequ...
Autori: Joseph Ulibarri, Steven Archambault
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25212

AbstractThe paper presents original results concerning concentrations of eight heavy metals in soils adjacent to two improperly built municipal waste deposits located in Eforie Sud and Techirghiol, Constanta County, Romania. Measurements have been done on surface and depth soils, during April-October 2006. The applied analytical technique for metal determination was flame atomic absorption spectrometry (FAAS). The mean measured values ranged as follows (in mg/kg dry weight): Cd: 0.09 - 0.15; Co:...
Autori: , Elisabeta Chirilă, Narcisa Elena Ilie
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25213

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 extraction of some pollutants from different matrices, the treatment of hazardous and infectious wastes, the destruction of refractory compounds and the prevention of noxious emissions are the main environmental applications of microwave-assisted chemistry. The advantages and disadvantages of this technique are also considered....
Autori: Carmen Zaharia, Georgiana G. Surpăţeanu, Mioara Surpăţeanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25217

AbstractVolatile organic compounds (VOCs) constitutes an important class of environmental pollutants, which, together with other contaminants as NOx, SOx, CO, NH3, CO2 etc. participate in degradation of atmosphere and exhibit a potential risk for human health. VOC emissions may be generated in more than 25 percentages through the use of solvents in different industrial or house holding activities. For applying a certain plan concerning the pollution reduction, any user of organic solvents contai...
Autori: Florin Bandrabur, Ion Balasanian, Liliana Lazar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25218

AbstractThe project’s idea is really simple: using the LabView environment, we have realized a virtual instrument able to get from the GPS the information about latitude, longitude, altitude and from a prototype data acquisition board for environmental monitoring parameters the information about air pollution factors. The perfect solution regarding the costs, the covered area and the accuracy of the measured data is the use of a glider for flight, because of its characteristics: free flights (...
Autori: , Codrin Donciu, Marius Branzila, Marius Paslaru, Romeo Cristian Ciobanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25221

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

AbstractThis work presents the state of the art of qualitative and quantitative risk assessment methodologies in a variety of fields. Because risk exists in all ranges of human activity, both private and professional, risk assessment is an attempt to analyze precipitating causes of risk in order to more efficiently reduce its probability and effects. Numerous methodological guidelines within the field of environmental science exist to provide guidance for a risk assessment program, although the ...
Autori: , , Florentina Anca Căliman, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25226

AbstractEnvironment is a major issue which confronts industry and business in today's world on daily basis. Different industrial activities are degrading various environmental components like water, air, soil and plant vegetation. Cement industry is one of the 17 most polluting industries listed by the Central Pollution Control Board (CPCB). The Jaypee Rewa Cement Cement industry, Rewa, Madhaya Pradesh is located between 24o 33' North longitude and 81o 10' east latitude and is situated at Jay Pr...
Autori: Baby Sunisha, Nagpure Ajay Singh, Shrivastava Preeti, Shukla Ravindra Nath, Shukla Sudheer Kumar, Singh Deepali, Vivek Kumar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25233

AbstractThe paper presents new experimental results on the photodegradation of two important phenyl urea herbicides in water: Monuron and Isoproturon. The photodegradation was performed by two Advanced Oxidation Processes (AOPs): the homogeneous photo- Fenton process (, UV-H2O2 - Fe3+) and a heterogeneous photo - Fenton reaction using an iron pillared Laponide- RD catalyst (Fe-Lap-RD). The Fe-Lap-RD catalyst was prepared from iron nitrate 0.2 M solution and a suspension of Laponite - RD clay. Th...
Autori: Elsa Lundanes, Ilie Siminiceanu, Maria-Magdalena Bobu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25234

AbstractThe zero waste is a policy, a way, an aim and represents a new approach planned for the 21st century, which includes the resource preservation principles, pollution reducing, increasing of the opportunities to create new jobs and providing the highest degree of economic stability.The strategy of developing the Romanian textile industry sub-sectors envisages the achieving of certain superior production indices, from a physical and value point of view, in 2010, a quantitative increase of t...
Autori: Eftalea Carpus, Emilia Visileanu, Razvan Scarlat
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25236

AbstractThe removal of formasine fines particles from water by precipitation with polyelectrolyte and surfactant complex of Polyacrylamide (industrial product Praestol 611 made by Degussa) and Sodium Lauryl Sulphate (SLS) was experimentally studied. Calcium oxide was added to initiate precipitation of the polyelectrolyte complex together with the fines particles. The experiments were carried out with complexes having the surfactants concentration higher then the critical aggregation concentratio...
Autori: Cristina Costache, Gabriel Dabija, Mihaela Mihai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25238

AbstractThe disinfection of water containing microorganisms by exposure to pulsed-discharge plasma using a low-temperature gas-liquid hybrid discharge (HD) reactor was studied.The HD reactor consists of a plexiglas cylinder containing the liquid of high voltage electrode above liquid' s surface and grounded electrode submerged in the liquid. The HD could produce both arc discharges in gas and liquid phases. The high-energy plasma arc produces a pressure shock wave, which kills the targeted micro...
Autori: Gamal M. El-Aragi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25242

AbstractLaboratory scale experiments were conducted in order to investigate the photolysis of Reactive Blue 19 (RB 19) dye using UV as the irradiation source in alkaline solution. The effects of operating parameters such as, pH, initial dye concentration, UV dosage, hydrogen peroxide and oxygen have been evaluated. The results indicate that the UV photolysis process in alkaline solution is ideal for decolorizing of RB 19 and it can be taken as a starting step to establish the economical feasibil...
Autori: Abbas Rezaee, Ebrahim Hajizadeh, Gholamreza Mosavi, Mohamadtaghi Ghaneian, Seyyed Jamalodin Hashemian
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25245

The heavy metal concentrations exceeding the standard admissibility, determine modifications of some cytological parameters. Therefore, by this paper, there were determined the concentrations of copper, iron, manganese and zinc from Prunus persica L. pollen grains (Research-Development Fruitgrowing Station, Constantza, Romania) using wet digestion followed by flame atomic absorption spectrometry (FAAS). Then, the main cytological parameters (such as citological viability and germination capacity...
Autori: Dan Mandalopol, Elena Doroftei, Manuela Rotaru-Stancic, Simona Dobrinas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25249

AbstractThe comparative study on reactive extraction of p-hydroxybenzoic acid with Amberlite LA-2 and D2EHPA in two solvents with different polarity (n-heptane and dichloromethane) indicated that the extractant type and solvent polarity control the extraction mechanism. Thus, the reactive extraction with Amberlite LA-2 occurs by means of the interfacial formation of an aminic adduct with three extractant molecules in low-polar solvent, or of an salt with one extractant molecule in higher polar s...
Autori: Anca-Irina Galaction, Dan Caşcaval, Maria Cămăruţ
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25250

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

AbstractThe critical analysis of the transfer processes intensification techniques is carried out by identification of the methods that can be applied, regardless of the process nature. The main priority is the development of a consistent methodology that will represent the basis of specific practical methods development by establishing a theoretical frame for studying the heat transfer processes. The main purpose is to reduce the stationary time of the charge in the installation, accomplishing ...
Autori: Adrian Dima, Alina Adriana Minea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25253

AbstractHollow fiber polyacrylonitrile membranes with three different MWCOs (i.e. 6, 13, 50 kDa) have been tested for dead-end ultrafiltration of a combined refinery and petrochemical secondary effluent. The effluent treatment envisaged further recycling as cooling water make-up following an ultrafiltration/reverse osmosis advanced treatment scheme. Criteria for ultrafiltration evaluation included flux restoration by backwashing, turbidity removal efficiency and water recovery. The membranes cou...
Autori: , Lidy E. Fratila-Apachitei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25258

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

AbstractIn this study, we follow the chrome distribution and his association forms with mineral and organic components, from 14 soilsamples from industrial zone of IaÂ?i city.The total chrome concentration in studied soil samples varied between 11.73-129.35 μg/g, being lower than the normal values only for four samples. The Cr(VI) weight of total chrome content varied between 3.78-14.52 %. For none of studied soil samples the chrome content is not over to value of alert concentration. The q...
Autori: Constantin Rusu, Doru Juravle, Dumitru Bulgariu, Laura Bulgariu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25260

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

AbstractIn this paper, the study of synthesis and stability in aqueous solutions of new coordination compounds of Ti(IV) and Zr(IV) with ligand N-hydroxy-succinimide is presented. The salts: TiOSO4¡2H2O and ZrOCl2¡8H2O used for obtaining the studied coordination complexes, can derive from recycling metallic residues resulted in mechanical technologies applied for titanium and zirconium in S.C. ZIROM S.A. Giurgiu.The new complexes were synthesized in aqueous solutions and stability were study u...
Autori: Adrian Cailean, Daniel Sutiman, Doina Sibiescu, Gabriela Apostolescu, Ioan Roşca, Marian Crudu, Mihaela Vizitiu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25265

AbstractAs answer to European Community politics, in Romania the researches for waste reworking and ecological treatment are developing. The researches are focusing on wood wastes for its recovery in energy purposes. The purpose is the enlargement of superior coal utilization area obtained from Jiu Valley coal field, for increasing the efficiency of heating installations for domestic consumption, concordantly to European and Romanian pollutions regulations.Combined utilization of the fuel compos...
Autori: Camelia Bădulescu, Eugen Traistă, Gheorghe Lăzăroiu, Maria Orban, Valeriu Plesea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25267

AbstractConsidering that three-phase dispersions are common in chemical engineering and biotechnology, and with increasing airlift reactor applications to chemical and biotechnological processes, a experimental study was undertaken in order to investigate the liquid phase hydrodynamics and dispersion in an external-loop airlift reactor on laboratory scale. Experiments were conducted in order to find a relationship between relevant hydrodynamic and mixing parameters of a solidsuspended exter...
Autori: Florina Ungureanu, Maria Gavrilescu, Radu Z. Tudose
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25268

AbstractEnvironmental pollution has posed and continues to cause specific to and complicated problems. The unsustainable production and consumption patterns result in waste that can harm health and the environment. Because of rapid population growth and urbanization, industrialization process and rural to urban migration, solid waste management is becoming more and more critical now, being a problem in rapidly growing urban centers in developing countries. All these threaten the health and well-...
Autori: Abdelnaser Omran, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25275

AbstractIn the theory of relations between economical branches, a variety of balance of connections between the branches (BLR) models is used, whose theoretical construction is based on a series of hypotheses according to the purpose of each model. In this paper models which make use of the natural units are applied in the analysis of fluxes between industrial branches. ...
Autori: Aurel Burciu, Ionel Bostan, Petru P. Condrea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25277

AbstractIn India, transportation sector is growing fast and the number of vehicles on Indian roads is increasing at a rate more than 7 percent a year. During the period of 50 years from 1951 to 2001, the number of vehicles has increased from 0.3 million to 43 million i.e. an increase of almost 143 times. This has led to overcrowded roads and noise pollution. The transportation sector is one of the major contributors to noise in urban areas, accounting to as much as 55 percent of total noise on t...
Autori: Arvind Kumar Shukla, Jyoti Bhushan Srivastava, Manoranjan Parida, Sukhvir Singh Jain
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25279

AbstractOne of the most important environmental problems is traffic noise in urban areas. In order to assess and monitor its influence on environmental quality, road traffic noise measurements are necessary. In generation of noise contour map, two main problems are encountered: noise measurements, which take considerable amount of time, and the method for rigorous production of noise contour map.An extrapolation technique was developed to construct noise contours using actual sound level measure...
Autori: Cahit Tagi Celik, Lale Guremen
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25284

AbstractThe present work describes an investigation of process of ion-exchange separation of tartaric acid in model systems. These investigations will be used for the separation of tartaric acid from secondary wine products. Their valorisation allows obtaining valuable compounds, as well as decreasing the huge quantities of wastes accumulated at wine making factories.As ionic exchangers, there have been used weakly basic anion exchanger Amberlite IRA-67 (tertiary functional amine groups) and str...
Autori: Aliona Mereuţa, Gheorghe Duca, Herbert G. Boechzelt, Natalia Marchitan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25286

AbstractThe corrosion resistance of three types of low-carbon steels in water-contaminated mixtures of adipic acid and methanol was investigated. The concentration of water in the organic mixture was progressively raised from 1% to 5%, while the carbon concentration in the steel samples varied from 2% to 4%. Infrared spectroscopy (IR) and X-ray diffraction (XRD) were used to investigate the insoluble corrosion products. Based on the weight losses measurements, on the polarization curves and on t...
Autori: Adrian Cailean, Daniel Mareci, Daniel Sutiman, Mircea Teodor Nechita
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25287

Abstract In this paper preliminary results of studies concerning the extraction of uranium(VI) from soils in aqueous PEG (1550) 20 % - Na2SO4 20 % - Na2CO3 10-2-10-3 M two-phase systems are presented, as well as the spectrophotometric determination of extracted uranium with pirocatechol violet (PV). A special attention was given to the experimental factors (pH, redox potential, CO32- anion concentration and initial uranium concentration), which was found to influence both the formation and stabi...
Autori: Daniel Condorachi, Doru Juravle, Dumitru Bulgariu, Laura Bulgariu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25290

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 possibility of biological phosphorus removal (BPR) was studied using a lab-scale single reactor the same as SHARON process. Up to now, there has been no investigation of the feasibility of SHARON process for the purpose of phosphate removal. The optimal operation conditions were established to obtain highest removal rates. Under the experimental conditions, the phosphorus concentration dropped from an influent concentration of 1000 mg/L to levels around 0.1 mg/L or less. It was concl...
Autori: Abbas Rezaee, Hatam Godini, Masod Solimani, Nayera Nami
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25293

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

Include urmatoarele articole:� Removal of nickel from aqueous solution by Nordmann FIR (ABIES Nordmanniana (STEV.) SPACH SUBSP. Nordmanniana) cones� Determination of heavy metals in extracts and macerates from garden flowers� Biological phosphorus removal in a high performance single reactor � Advanced Cd2+ removal on dispersed TioO2-fly ash � Remediation techniques for contaminated soils� Separation of uranium(vi) from soils by extraction in aqueous PEG (1550) - Na2SO4 - Na2CO3 two-...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25296

AbstractThe paper discusses some aspects concerning the utilization of biomass as a bioenergy resource worldwide and in Romania, since  biomass is considered a sustainable, potentially environmentally sound and a replenishable resource. The biomass categories for bioenergy are analyzed, considering the factors which influence its availability. Biomass energy potential and current use in different regions as well as in Europe is accounted. Also, biomass power as an important alternative for ...
Autori: Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25298

AbstractThe development of technologies for waste treatment, simultaneously with minimizing greenhouse gas emissions, has become a matter of great concern at global level. Biogas systems can help in the fight against global warming by avoiding to escape methane from organic waste, into the atmosphere. Biogas technology is of great benefit to the end-users and the environment by energy, compost and nutrient recovery. Romania is a country with a huge biomass potential. Implementing of biogas techn...
Autori: , Corina Alice Babutanu, Gheorghe Băran
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25300

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

AbstractThe purpose of this study was to investigate the immobilization of denitrifying bacteria on microbial cellulose (MC) for biological denitrification. A novel denitrifying bacterium, Pseudomonas stutzeri, was immobilized in microbial cellulose and introduced into an up flow packed bed reactor in order to remove nitrate from synthetic influent. The MC presented the high biomass concentration throughout the experiment, achieving 3.4 mg biomass/g support. The efficiency of the system for deni...
Autori: Abbas Rezaee, Hatam Godini, Hossein Bakhtou
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25302

AbstractIn agricultural culture there are numerous weeds diminishing the production which are controlled by several methods. The most common and efficient method with the modern agriculture is the chemical method of controlling weeds, using a large range of herbicides. A great part of these herbicides have long lasting remanence, even over three years. A great part of the active substances of the herbicides pollute the soil and subsequently the waters, sometimes with disastrous action for the en...
Autori: Brindusa Robu, Sabina Robu, Teodor Robu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25303

AbstractDepletion of world recourses, increasing pollution, and climate change make us shift from linear economy to system economy - an economy of technologies integrated to reach a non-polluting zero emissions production system. Transition to renewable resources requires replacement the present crude oil refinery by biomass refinery. Along with conventional biomass refinery technologies bioengineering and nano-technologies become significant players of systems in the design of clusters of integ...
Autori: Arnis Kokorevics, Janis Abolins, Janis Gravitis
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25304

AbstractAt the beginning of 3rd century the humankind finds at a crossroads. Daily, people assist at miracles, live in a time of change, both in economical and rational areas. Energy demand is expected to increase steadily over the next couple of decades, as income levels and economic output expand, especially in the new democratic states after ’90th.Renewable energy resources represent a new opportunity in Romania, with less participation in the market than those forums outside of the country...
Autori: Camelia Ciubota-Rosie, Maria Gavrilescu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25305

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

AbstractPulp and paper mills generate various quantities of energy-rich biomass as wastes, depending on technological level, pulp and paper grades and wood quality. These wastes are produced in all stages of the process: wood preparation, pulp and paper manufacture, chemical recovery, recycled paper processing, waste water treatment. Energy recovery from wastes of different origin has become a generally accepted alternative to their disposal. Pulp and paper industry expresses an interest in adap...
Autori: Dan Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25307

AbstractThis paper discusses the results of study concerning the interaction between the birch veneer and some compounds with biocide potential action are presented. With this end in view the samples of veneer were immersed in solutions with a concentration of 5% of the following products: unmodified straw lignin or modified through hydroxymethylation, furan resin and tannins dissolved in 0.1 N ammonia solution. To make a comparison, the same combined treatments were applied, using ammonia solut...
Autori: Adina-Mirela Capraru, Elena Ungureanu, Valentin I. Popa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25309

AbstractThe sorption of Pb(II) and Hg(II) ions from aqueous solutions by moss peat (from Poiana Stampei, Romania) was studied in a batch system. The data obtained from experiments of a single-component sorption were analyzed using Langmuir and Freundlich models. The Langmuir equation describe sorption isotherm of Pb(II) and Hg(II) with high correlation coefficients, and better than Freundlich model. According to the Langmuir model, the maximum uptake capacities of moss peat for Pb(II) and Hg(II)...
Autori: Dumitru Bulgariu, Laura Bulgariu, Matei Macoveanu, Mioara Răţoi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25311

AbstractNowadays, energetic utilization of biomass, biotechnology attracts a big attention not only from the environmental point of view but also have a social, political and economical impact. According to the Directive 2003/30/EC of the European Parliament and the European Council the emission of greenhouse gases can be reduced by 49% using bioethanol produced by a manufacturing process based on corn, instead of crude oil based fuels. Moreover in Hungary from 1st of July 2007 only gasoline wit...
Autori: , , Gyula Marton, , Jenő Hancsók, Tatiana Yuzhakova
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25312

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 paper discusses some aspects concerning environmental issues considered from an economic perspective, since economic globalization as well as ecological globalization follows new ways of conditioning each other. In the past the most important thing was the impact of the environmental protection pressure - soil deterioration, water system, the atmosphere and the forests - uponeconomical perspectives. In the recent past years the society had to face the quick growth of the economical i...
Autori: Ionel Bostan, Petru Condrea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25316

AbstractThe paper is a short review on the soil decontamination applying ex-situ techniques. Some sources and pathways of soil  contamination are discussed. It was revealed that available techniques for soil decontamination can be divided in two parts, depending on where the action have place: in-situ or ex-situ. Also, depending on the nature of the process, these techniques can be biological, physical-chemical and thermal. In order to decontaminate soils properly, the primary contaminants ...
Autori: Lucian Vasile Pavel, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25318

AbstractThe question of whether environmental assessment has achieved its goal of helping to reach better decisions has continually engaged the attention of academics, policy makers and environmental impact assessment practitioners. Answering this question requires several different groups working together and/or in sequence, and examining the effectiveness of environmental impact and risk assessment. EIA has tended to focus on the identification of impacts associated with planned activities or ...
Autori: Brindusa Robu, Elena Doinita Carlig, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25321

AbstractThe paper proposes a solution for life quality improvement by changing the individual’s mentality and creating a sustainable behavior. The solution consists of the development of a psycho-behavioral pattern starting from the Gorgon experiences. The latter are hurtful experiences in the individual’s life the effect of which is a complete or partial emotional components blockage. The hindrance of these components performance affects the individual’s behavior, placing him or her in a ...
Autori: Brindusa Robu, , Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25323

AbstractAt global level, the microbiological quality of water is a matter of concern, since diarrhoea represents the second cause of mortality. In addition, nitrates represent a significant problem and their high concentration - above the accepted limits - in drinking water is frequently encountered in Romania. Water samples have been analyzed in accordance with the methodology recommended by The Public Health Institute Bucharest. 78.15% of the water samples evaluated during the interval 2004-20...
Autori: Claudia Sarmasan, Lucia Daina, Sonia Draghici
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25325

AbstractThe work presents the negative environmental impact produced by an extraction of crude oil activity. To highlight and quantify the negative effects on the environment produced from such activity, the experimental part has been focused on evidence of samples of soil, water from groundwater aquifers and surface, and the air emissions. The values of quality indicators are presented in graphs and tables, highlighting an activity with all major impact on the environment....
Autori: Aurica Grec, Corneliu Maior
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25326

AbstractDrinking water treatment plays an important role in maintaining public health. Chlorine is the most often disinfectant used for microbiological protection of water. Required residual chlorine concentration must be in treated water when it leaves treatment plant, to comply with the regulations. The chlorine residual must be 0.5 mg/L at the entrance into the distribution system and 0.25 mg/l at consumers, according to the law. Any less and there is no guarantee that the water has adequate ...
Autori: Dan Robescu, Diana Robescu, Nicolae Jivan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25328

AbstractObservations and data regarding the intense corrosion and deposit phenomena of the carbon steel tube bundle of the heat exchanger are presented. The bundle ensures the cooling of the light fraction C1 - C5 from the top of the distillation column which carries out the removal of pentane and smaller derivates into the RC equipment. Chemical and mineralogical analyses confirm the aggressive action of the fluids flowing through the exchanger. Tests have been done in order to replace the carb...
Autori: Ana-Daniela Georgescu, Lucian Georgescu, Maria Apostolescu, Nicolae Apostolescu, Ovidiu Georgescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25333

AbstractThe electrochemical behaviour of Ti6Al4V and Ti6Al4Zr alloys has been evaluated in Ringer's solution at 250C. The effect of the substitution of vanadium in Ti6Al4V alloy has been specifically addressed. The evaluation of the corrosion resistance was carried out through the analysis of the open circuit potential variation with time, potentiodynamic polarization curves, and electrochemical impedance spectroscopy (EIS) tests. Very low current densities were obtained (order of nA/cm2) from t...
Autori: Adrian Cailean, Daniel Mareci, Daniel Sutiman, Igor Creţescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25334

AbstractImproving access to safe drinking water can result in multi-dimensional impacts on people’s livelihood. This has been aptly reflected in the Millennium Development Goals (MDG) as one of the major objectives. Despite the availability of diverse and complex set of technologies for water purification, pragmatic and cost-effective use of the same is impeding the use of available sources of water. Hence, in country like India simple low-energy technologies such as solar still are likely to ...
Autori: , Nanda Kumar, Santosh M. Avvannavar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25337

- 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

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

AbstractTwo non-functionalized hypercrosslinked polymeric resins type Macronet (MN 202 and MN 250) were employed to remove nhexane vapors from gas phase. A comparison of the equilibrium behavior of these hypercrosslinked resins and a bituminous granular activated carbon was made. The initial n-hexane concentration in the air stream ranged from 2100 to 4500 ppm and the adsorption temperatures were 30oC, 40oC and 50oC. The results showed that the MN 250 presents the higher adsorption capacities of...
Autori: Adela Marilena Buburuzan Haleta, Cezar Catrinescu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25341

Abstract        The sorption of metal ions from aqueous solution plays an important role in water pollution control and in recent years there has been considerable interest in the use of low-cost adsorbents. Many researchers have tried to exploit naturally occurring materials as low-cost adsorbents, for removing of heavy metals. In this article the removal performance of various low-cost adsorbents derived from agricultural waste or natural material is evaluate...
Autori: Raluca Maria Hlihor, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25379

AbstractIntegrated water resources management requires planning and management activities, as well as adequate information and communication within a structure that groups different stakeholders (industry, agriculture and other types of water users, civil society representatives, university and research institutions, water authorities and waterworks companies), being thus characterized by a high level of complexity, and requiring the involvement of numerous decision-makers operating at different...
Autori: , , Luminita Lupu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25344

AbstractPaint sludge of automotive industry contains heavy metals and other toxic substances. Due to this matter, it has a high pollution potential. Incorrect disposal of paint sludge led to kinds of environmental pollution. Recycling and reusing of wastes can be one of the best solutions for decreasing of pollutant entrance to environment. The purpose of this study was to present a new method of extracting the main components of paint sludge, for determining concentration of elements in paint s...
Autori: Azadeh Akhavan Bloorchian, Seyed Mostafa Khezri
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25346

AbstractUrban air pollution is responsible for the highest burden of environmentally related diseases in Europe. Air pollutants with strongly indicated respiratory health effects are particulate matter, nitrogen oxides and sulfur dioxide. The retrospective ecological survey has taken into account the urban air pollution with sulfur dioxide (SO2), nitrogen dioxide (NO2), ammonia (NH3) and particulate matter (PM10). The analyzed data show that after applying the European regulations regarding the ...
Autori: Catalin Adrian Petrisor, Dorin Petrişor, Lucreţiu Radu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25348

AbstractThe technological process of basic chemical organic compounds synthesis is included among the economic activities that can affect the environment quality. The environmental impact of chemical organic synthesis is evaluated using the alternative method of global pollution index that considers the concentric circles graphical methodology proposing a scale of the arithmetic mean values for the evaluation scores of each environmental components (e.g. water resources, gaseous emission, soil a...
Autori: Carmen Zaharia, Ilie Murăraşu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25352

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

AbstractA present challenge for research is to determine how to use the combination of oil, gas and coal most efficiently with the minimum environmental damage. In this paper the authors have compared technologies to produce the electricity using natural gas and coal. The objective of this paper consists in evaluation of the life cycle assessment of the natural gas and coal in order to compare their greenhouse gases (GHG) emissions. In this way, three systems with and without CCS were examined: ...
Autori: Adrian-Alexandru Badea, Cristian Dincă, Gheorghe Lăzăroiu, Tiberiu Apostol
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25355

AbstractAn experimental three-stage subsurface flow constructed wetland system was investigated for the removal of nutrient and organic matter from primary-treated domestic wastewater. Built in the Turkey Scientific and Technical Research Council-Marmara Research Center, Gebze, Turkey (Istanbul), the system consisted of a vertical flow-gravel filtration in the first stage, a horizontalsubsurface flow bed vegetated with Iris in the second stage, and a vertical-subsurface flow bed vegetated Phragm...
Autori: Bilal Tuncsiper
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25358

AbstractPulsed high voltage discharge technology is a newly developed method for knock out viruses in blood with various electrohydraulic discharge reactors. The aim of this study is to investigate the effect of an electrohydraulic discharge treatment system on Hepatitis C virus (HCV) behaviour. The electrohydraulic discharge (EHD) reactor consist of high voltage point discharge electrode above blood surface and cylindrical ground copper electrode containing the blood (in the same time act as th...
Autori: Gamal M. El-Aragi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25362

AbstractTitanium alloys show attractive properties for biomedical applications where the most important factors are biocompatibility, corrosion resistance, low modulus of elasticity, very good strength-to-weight ratio, reasonable formability and osseointegration. The aim of present study was to evaluate the electrochemical behaviour of Ti6Al7Nb alloy in Ringer’s solution of different pH. This evaluation was carried out through the analysis of the potentiodynamic polarization curves, and electr...
Autori: Daniel Mareci, Julia Claudia Mirza Rosca, Marina Garcia Falcon
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25363

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

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

AbstractThis paper analyses a new technology for minimizing the use of metalworking fluids (MWF) during the machining process. Despite the fact that near dry machining (NDM) produces almost similar cutting performance to conventional flood supply machining while using much less MWF, for being fully utilized in industry is necessary to research ecological impact of these machining techniques. To take full advantage of minimal quantity lubrication (MQL) technique and expand its applicability, an u...
Autori: Domnita Florina Fratila
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25382

Abstract Based on qualitative research conducted on teams of Romanian students in Engineering and Management that participated in transnational teams within the framework of an international simulation program on global technologies for sustainable development, specific features in relation with the development of entrepreneurship capacity (values, skills competencies) were identified and examined. It was found that specific cultural biases influenced the way the Romanian students approached var...
Autori: Aida Carmen Hutu, Silvia Avasilcăi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25384

AbstractThe purpose of this study is to analyze the recycling potential of printing papers, which are obtained by two different filler loading processes: conventional loading by direct addition of calcium carbonate to cellulose fiber suspension and in-situ loading by precipitating calcium carbonate within cell wall and lumen of pulp fibres. In order to evidence the influences of the both filler content and loading method, a reference sample for recycling was obtained without filler, but using th...
Autori: Maria Ciobanu, Elena Bobu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25386

AbstractThe main aspects refer to metals and refractory materials behaviour, at high temperature, to materials purifying and to achieve some chemical syntheses.The main technological parameter of the heating is temperature, heating obtained by focusing Sun's rays. The heating can be used inside the furnace to produce metallic material into a crucible, without any complementary power source.For the future, a bigger interest presents some other metals melting, more expensive than steel, such as ti...
Autori: Petrica Vizureanu, Cornel Samoila, Daniel Cotfas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25387

AbstractUltrafiltration (UF) represents an important option for the advanced wastewater treatment as it offers good performances from both technical and economical points of view, for the removal of suspended solids, colloids and some of the organic compounds present in different effluents. The occurrence of priority organic pollutants in wastewaters streams and the environment has raised intensive scientific debates about their effects and the possible abatement technologies. As part of a broad...
Autori: George Barjoveanu,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25390

AbstractThe study presents the processing possibilities for marc resulted as still residue from the distillation of fermented fruits in view to obtain a compacted solid fuel. Initial marc composition (carbon, hydrogen, nitrogen, sulphur and oxygen contents) determined by elemental analysis is evidenced, as well as technical characterisation (ash and moisture contents) and ash's qualitative composition, chemical characterisation of the liquid phase (pH, total phosphorus, acidity and conductivity)...
Autori: Daniela Simina Stefan, Anca-Ileana Penu, Mircea Stefan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25391

AbstractPersistent organic pollutants (POPs) are toxic chemicals that adversely affect human health and the environment around. This group of priority pollutants consists of pesticides, industrial chemicals and unintentional by-products of industrial processes. Natural materials, waste from industry and agriculture and bioadsorbents can be employed as inexpensive adsorbents to remove POPs from environmental components by sorption processes. The paper presents various natural sorbents and some ou...
Autori: Laura Carmen Apostol, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25395

Abstract This paper presents the preliminary results of photocatalytic oxidation of humic acid from water using two types of catalysts, i.e., TiO2 and Ag-doped TiO2 modified zeolite (TMZ and Ag-TMZ). TMZ and Ag-TMZ, with zeolite granulation of 315-500 ?Źm was synthesized by sol-gel method, and the morphology and composition of the unmodified/modified zeolite were characterized by BET (Brunauer–Emmet–Teller) method, X-ray Diffraction (XRD), scanning electron microscopy (SEM) and energy dis...
Autori: Cornelia Ratiu, Carmen Lazau, Paula Sfirloaga, Corina Orha, Daniela Sonea, Stefan Novaconi, Florica Manea, Georgeta Burtica, Ioan Grozescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25397

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 A new type of wire-cylinder plasma reactor, in which air flow shapes into gas torches is developed. The decomposition performance of toluene in contaminated air flow induced by pulsed corona discharge in the reactor is investigated experimentally under atmosphere pressure and room temperature. It is found that the decomposition efficiency is affected dramatically by air introduction way, and the ejection stimulates the decomposition of toluene compared with the conventional method. T...
Autori: Zhihui Xie, Lingen Chen, Fengrui Sun, Qizheng Ye
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25402

Abstract Development of industrial cell culture processes needs a good engineering practice and system expertise in achieving a successful integrated process using disposable components. The bioreactors for 3D tissues systems could be an advantageous alternative in terms of low contamination risk, easiness of handling and scaling-up. A careful and strategic design of these equipments provides a better process control and a safe and reproducible production of tissue construct. They can offer t...
Autori: Anca-Irina Galaction, Dan Caşcaval, Dan Zaharia, Radu Ciorap
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25404

Abstract Protection of plants from diseases, pests and weeds plays a decisive role in agricultural development, as an essential part in planning and policy of numerous countries. Since the plant protection products are mainly chemicals and may be not only poisonous for humans and fauna, but they may also pollute water bodies, ground water and soil with hazardous pollutants, their use have to be environmentally friendly and sustainable. The paper discuss some aspects of benefits and risks con...
Autori: Manuela Olga Pogăcean, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25405

Abstract Taking into account the statistical data gathered in two previously published papers concerning the pollution sources in the production sector, namely Finishing section, various solutions are proposed for wastewater treatment. Bearing in mind the results obtained through the sampling method on different types of water in the urban sanitary sewer system, the conclusion was that the most convenient alternative, besides the source control is the treatment in wastewater treatment plants...
Autori: Irina-Isabella Savin, Romen Butnaru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25408

Abstract Fine particulate matter and ground-level ozone are now generally recognized as the most significant in terms of health impacts. This study shows that concentrations of particulate matter up to 10 microns in diameter (PM10) in Suceava city exceeded EU limits set to protect human health during 2004-2007. In order to design effective PM10 air quality management programmes, it is essential to identify the sources affecting PM10 background levels. For this, PM10 data series were analyzed ...
Autori: Lacramioara Gina Ursul, , Doina Carmen Manciuc
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25409

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 The etching of iron materials in sulphuric acid solutions allows the dissolution of the iron oxides with formation of iron sulphates. The relatively low solubility of the formed sulphates imposes their separation for avoiding the contamination of the etching bath, as well as for preventing the environmental pollution through the wastewater. Within the flow sheet of the processing of the hot or cold rolled steel, a stage of separation by crystallization of iron sulphate is foreseen. T...
Autori: Liliana Lazar, Ion Balasanian, Florin Bandrabur
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25415

Abstract Phytoremediation is an eco-friendly, cost effective, in situ treatment technology. In the present research study, phytoremediation technology has been employed for remediation of radionuclides namely 137Cs and 90Sr by using living green plant Catharanthus roseus. C. roseus plants were exposed to different activity levels of 137Cs and 90Sr in aquatic condition to assess the efficiency of plants for remediation of radionuclides. C. roseus plants have been found to remediate 70%, 52% an...
Autori: Singh Anamika, Susan Eapen, Madhusudan H. Fulekar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25417

Abstract Textile industry is one of the most pollutant and water consuming industries. Large quantities of water are required in materials preparation and dyeing, so consumption and waste generation have become serious concerns for textile manufacturers and finishers. Textile effluents are characterized by high values of quality indicators such as BOD and COD, suspended solids and heavy metals. A serious environmental problem and also an aesthetic problem is the color of the effluent. Reactiv...
Autori: Daniela Cailean, George Barjoveanu, Corina - Petronela Musteret, Liliana Rozemarie Manea, Nicolae Sulitanu,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25420

Abstract Knowledge-based society, sustainable development, and digital technology as concepts of the contemporary times that stem from the responsibility towards the future of mankind, are the results of intense scientific research. As a consequence of its commitment of turning Europe into the world's most dynamic and competitive knowledge-based economy, and aware of the role played by research in the development the human society, the EU has defined at Lisbon in 2000 the framework of action ...
Autori: Carmen Cătălina Ioan, Maria Ileana Carcea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25421

Abstract The paper highlights the combustion possibilities of crude vegetable oils as fuels for stationary application. This is an opportunity of a new utilization in Romania of tee vegetable oils, for electricity production and heating systems, instead of the current situation of using in transportation as biodiesel fuel. The research focuses on crude vegetable oils obtained from some indigenous cultures: rape, soy, sunflower. An overview of the agricultural potential of oleaginous plants is...
Autori: Ion Oprea, Ionel Pisa, , Tudor Prisecaru, Gheorghe Lazaroiu, Gabriel Negreanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25424

Abstract Changing the working space by introducing some radiant panels has the purpose of intensifying the heat transfer by convection and radiation. By centralizing the experimental results, has been obtained an energetic saving of 28.67 – 32.74 % by using radiant panels; the heating speed of the charge raises with almost 50 % and the heating time of the charge decreases. In conclusion, changing the working space by introducing some radiant panels inside the furnace leads to important ener...
Autori: Alina Adriana Minea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25426

Abstract This paper aims to analyze theoretically events in the economy - ecology - environment (natural resources) mega - system. This analysis includes methodologies making use of the first and second thermodynamic principles (for approaching the waste role in technological processes contour toward environment and the entropy variation importance in the main environmental segments), the application of systems theory and theories relating to emergy. The obtained results allow us to propose, ba...
Autori: Avram Nicolae, Cristian Predescu, Maria Nicolae, Mirela Gabriela Sohaciu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25428

Abstract The photocatalytic degradation of sulfamethazine, a sulfonamide drug, has been investigated experimentally, in aqueous heterogeneous solutions containing n-type oxide semiconductors as photocatalysts, and by simulation, using neural network modeling. Through direct neural network modeling, the evolution of the photocatalytic oxidation process is evaluated as function of illumination time and type of catalyst. Inverse neural network modeling is a particular optimization that gives inf...
Autori: Ciprian George Piuleac, Ioannis Poulios, Silvia Curteanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25430

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 paper presents a risk analysis and assessment of the defence linear systems failure (dykes) in case of accidental flood. Also, breach scenarios and hydrographs computation for the corresponding accidental high waters are provided. The impact assessment is highlighted through a global matrix model for costs quantification. It is also presented the flooding computation model for different versions of the linear defence systems and in a correspondent way the Inundation Accidental D...
Autori: Codruta Badaluta-Minda, Gheorghe Creţu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25433

Abstract The paper presents the preliminary experimental results performed at laboratory scale set-up for different combined mechanochemical treatments of final effluents from a zootechnical farm from the central Moldavian region of Romania. Because of the high content of pollutants into wastewaters, the soil can be polluted and also the ground waters. To avoid this soil pollution episode, some combined mechano-chemical processes were studied and applied into a specific technological order as...
Autori: Carmen Zaharia, Mioara Surpăţeanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25434

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 The analysis over the underground water monitoring system and the collected data from survey drilling show that the underground water has an unsatisfactory quality due to some physical and chemical characteristics. Along with these, factors like the surface water pollution, the hydrodynamic exchange between surface and underground waters and the reintroduction in the agricultural activities of nitrates and phosphorus based fertilizers lowers, as well, the quality that it has been tal...
Autori: Ioan Crăciun, Catrinel-Raluca Giurma-Handley, Ion Giurma
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25436

Abstract Using slag in steel making represents a challenge for road construction industry and decreasing environment interactions also.Steel making slag wit granulations of < 10 mm, which today have not a sure solution, represents the research object. The technological research solutions have aimed reducing CaO free content in these slugs, and reducing slug fraction with granulationof ...
Autori: Florian Zaman, Mirela Gabriela Sohaciu, Ecaterina Matei, Cristian Predescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25439

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 mass of usage of secondary plastics are mostly determined by their quality and price. Therefore it was essentially to collect and evaluate the related aspects and expectations from the potential secondary-plastics users. To enable this in the frame of the W2Plastics EU7 project (Magnetic Sorting and Ultrasound Sensor Technologies for Production of High Purity Secondary Polyolefins from Waste) an adequate questionnaire was worked and sent out to automotive plastics end-product man...
Autori: Andrea Toldy, Brigitta Bodzay, Mircea Tierean
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25443

Abstract The European annual consumption of plastic materials has increased from 24.6 Mtons in 1993 to 39.7 M tons in 2003 and it is likely to keep growing. Europe is faced with the challenge of managing millions of tons of waste plastics. At the same time, polymer recyclers and manufacturing industries do not find enough secondary polymers of consistent quality. Plastics production and use has a range of environmental impacts because of the considerable quantity of resources needed as raw ma...
Autori: Peter Rem, Venga Solaria, Francesco Di Maio
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25444

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 Spent hydroprocessing catalysts from petroleum refining industries have been classified as hazardous wastes due to their content in heavy metal and persistent organic pollutants (POPs). The aim of our paper determine the polycyclic aromatic hydrocarbons (PAHs) residues contents in spent catalysts samples from four different units of the Romanian refinery Rompetrol Rafinare,Constanta: Hydrogen (H), Gas Desulfurization Sulfur Recovery (GDSR), Hydrofining Turbojet Kerosene (HTK) and Pet...
Autori: Camelia Draghici, , , Gabriela Stanciu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25449

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 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 The paper presents new studies about the removal efficiency of the biochemical treatment process of the Municipal Wastewater Treatment Plant from Constanta city, during 2008. Influent and effluent samples of biochemical treatment stage were collected and ammonium concentration, chemical oxygen demand (CODCr) and biochemical oxygen demand in five days (BOD5) were measured, aiming to study the evolution of the removal efficiency, during 2008. Additional analyses have been performed in ...
Autori: Elisabeta Chirilă, Camelia Draghici, Adriana Puhacel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25458

Abstract The studies of Cu (II) adsorption were conducted by testing various sawdust types. Two biomass, oak sawdust wood (Querqus robur) and white poplar sawdust wood (Populus alba), have been compared considering their efficiency for copper removal from diluted water solutions. Raw sawdust proved no efficiency in adsorption. Therefore, pre-treatment processes were developed and optimized, to enhance the sawdust affinity for heavy metals adsorption. The optimized pre-treatment conditions are...
Autori: Dora Lucaci, Anca Duta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25460

Abstract This work investigated the sorption removal of chromate anion, in single batch systems, from aqueous solutions. The process involves the sorption of the chromate by a series of Mg/Zn-Al - type hydrotalcites, with four Mg/Zn/Al ratios, in two forms: uncalcined and calcined at 500 °C. The calcined Mg-Al (Mg/Zn/Al = 2/0/1) material showed the highest sorption capacity: 35.7 mg/g. The three-parametered Langmuir-Freundlich model approximated the experimental equilibrium data over the con...
Autori: Laura Cocheci, Rodica Pode, Eveline Popovici, Emiliana Dvininov, Aurel Iovi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25461

Abstract Economical development in the Arges district, in the recent years, presents some aspects regarding the compliance with noise environmental regulations. The noise and its impact on human health is one of the most important objectives of the health assurance policy. In this paper a comparative study of urban noise in the principal cities of the Arges district is performed. The data monitoring of noise polution were carried out by using of specific standard methods with a Sonometer Delt...
Autori: Ion Iosub, Silvia Iosub, Victor Grigorie, Aurelia Meghea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25463

Abstract The development of energy from renewable resources is a very important action in the reduction of CO2 emissions. Hydropower is a renewable source able to reduce the CO2 emissions by more than 67 million tons / year. The paper analyzes a small hydropower plant to be implemented in Brasov region, from the environmental point of view. The reduction in the CO2 emissions brought by the small hydro is estimated by taking into account an ex-ante emission factor, based on validated and regis...
Autori: Codruta Jaliu, Dorin Diaconescu, Mircea Neagoe, Radu Saulescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25466

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 Certain conventional and alternative carbon-based electrodes, i.e., glassy carbon electrode (GCE) and, commercial boron-doped diamond electrode (BDDE) were investigated and compared for the electrochemical determination and degradation of 2,4-dinitrophenol (2,4-DNP). The electrochemical behavior of electrodes in the presence of target pollutants was investigated using cyclic voltammetry (CV), chronoamperometry (CA), and multiple-pulsed amperometry (MPA). The duality of the electrode ...
Autori: Adriana Bebeselea, Cristina Proca, Florica Manea, Ciprian Radovan, Georgeta Burtica, Joop Schoonman
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25469

Abstract The Aries River, due to its geographic position and its significance in the Mures - Tisza Basin, has a major impact on environmental media, influencing their quality. In the Middle Catchment Basin the main industrial activity is mining, since the Roman times, when the first mines were opened. The mining operations in the region generated a severe pollution of all the environmental media. The paper identifies the risk areas in the middle Aries River in terms of surface water pollutio...
Autori: , Lucrina Stefanescu, Camelia Costan, Mirela Miclean, Cristina Modoi, Serban - Nicolae Vlad
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25470

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 In order to improve the photo-efficiency of the electronic process as well as the response into the visible part of the spectrum, TiO2 doping with heavy metal (cadmium, cooper and nickel) have been employed. The objectives of this work are: (a) to prepare doped Me(Cd, Cu, Ni) TiO2 by doctor blade (DB) and spray pyrolysis deposition (SPD) techniques, (b) to characterize the catalysts, (c) to study and compare the activity of the Cd-TiO2, Cu-TiO2 and Ni-TiO2 catalysts on methyl orange ...
Autori: Luminita Andronic, Bianca Hristache, Alexandru Enesca, Anca Duta, Maria Visa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25480

Abstract Changing fuel consumption to a more ecological environmentally alternative is replacing fossil fuels with fuels generated from renewable resources. Ethanol, a renewable fuel, can be produced mainly from crops, lignocellulosic biomass and different other environmental wastes. Although ethanol has been produced mainly from crops, there is a great interest in using cheaper lignocellulosic materials as a feedstock for ethanol production. The aim of this paper is study of dilute acid hyd...
Autori: Ionel Balcu, Adina-Elena Segneanu, Marius Constantin Mirica, Mirela Ioana Iorga, Corina Macarie, Raluca Martagiu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25481

Abstract Highly dispersed nanoparticles of transition and noble metals are utilized for hydrocarbon reactions and rearrangements important to the chemical industry. The need to obtain 1 to 3 nm particles with narrow size distributions has prompted the development of alternative processing methods. Due to widespread speculation concerning the enhanced properties of nanoparticles over their bulk and atomic material equivalents, nanoparticle synthesis has become an active field of research withi...
Autori: , Irina Dumitriu,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25482

Abstract Application of ozone is known to yield favorable results in purification of phosphate plant water from elemental phosphorus, in treatment of water of alkali aluminate solutions of aluminum plants, in decontamination of cyanide-containing waste water of enrichment plants, and so on. It has been proved that halogen-containing compounds, most of which have mutagenic properties, and some of which are carcinogenic to humans, are formed when water is treated with chlorine. Conclusions made...
Autori: Irina Dumitriu, ,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25483

Abstract Nanotechnologies may have properties of self-assembly, stability, specificity, drug encapsulation and biocompatibility as a result of their material composition. Nano-particles are being actively developed for tumour imaging in vivo, bio-molecular profiling of cancer biomarkers, and targeted drug delivery. These particles are stable, environmentally benign, and their chemical properties can be easily tailored by chemically modifying their surfaces. Conjugated with pharmacological a...
Autori: Simona-Florentina Pop, ,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25484

Abstract The process of quality assurance in the study of foreign languages in Technical Higher Education builds and increases employers’ confidence in the graduates. Thus, acquiring technical and communicative competences becomes a â€?must?? when entering a competitive job market. The qualitative results of our research have revealed some of the factors sustaining students’ excellence performance in the study of foreign languages. In conclusion, the elaboration and implementation o...
Autori: Anca Greculescu, Gheorghe Solomon
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25486

Abstract The paper proposes itself to present some aspects about woody biomass as renewable source of energy and about one of the main product namely wooden briquettes. There will be put the accent on physical features of wooden briquettes namely its density but there has be not forgotten the ecological influences. It is also stated the conditions of experimental, type of machine that is used in laboratory experiments, type and feature of raw material and wooden briquettes. Finally some condi...
Autori: Aurel Lunguleasa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25491

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 The paper briefly presents the principle, methodology basics and the research opportunities offered by a modified L-joint test for a complex in-field evaluation of wood behaviour in outdoor above ground exposure, corresponding to the biological use class 3. A comprehensive and detailed examination of the tested samples, looking not only to the biological degradation of wood but also to wood cracking and coating performance (cracking, flaking, exfoliation, adherence), was performed an...
Autori: Maria Cristina Timar, Emanuela Beldean, Mihaela Porojan, Lidia Gurau
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25494

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 Phenols and chlorophenols are contaminants in soils, sediments, surface waters and groundwater, largely because of their worldwide utilization in the last 50 years as wood preservatives and general biocides in industry and agriculture. The toxicity of chlorophenols and their persistence in the environment require advanced treatment techniques for their removal. This study presents the results of a comparative evaluation of the adsorption of phenol and 4-chlorophenol from aqueous sol...
Autori: , Cezar Catrinescu, Roxana Elena Apreutesei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25497

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 It is known that carbonhydrates are precursors of all bioactive substances we tried in thes paper work to do some investigation on these substances in the environmental area of Iasi. To observe the influence of some chemical mutagens substances on carbohydrates biosynthesis we conducted investigations on plant material (leaves) taken from the Calendula officinalis L species. We used this assay to examine the effects of the herbicide 2,4- dichlorophenoxyacetic acid (2,4-D), etidium br...
Autori: Constantin Leonte, Roxana Vatavu, Teodor Robu, Irina Volf
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25502

Abstract It were investigated some atmospheric sediments of copper and chromium in mining areas of Dorna Basin by passive monitoring with six species of native epigeic moss (Mnium hornum, Mnium cuspidatum, Mnium punctatum, Polytrichum strictum, Thamnium alopecurum si Cephalozia bicuspidate) in two stages: April - September 2005 and October 2005 - March 2006. Thesedeterminations were achieved in 4 locations: Dealul Boambei, Saru Dornei, Sarisorul Mic, Neagra Sarului. In the same time was deter...
Autori: Catalin Dumitrel Balan, Ionela Mezdrea Cojocareanu Pata, Matei Macoveanu, Sandu-Marius Pata
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25503

Abstract The recent results of technical development of low cost GPS systems, geographic information systems, equipment and sensors which are needed to identify the state of the crops and soils have shown a growing awareness in agriculture and related sciences. The actual demand for modern crop management is dominated by the economic pressure and by the social request to increase the transparency of environmental impact of agricultural land. Currently, worldwide there are the public policy a...
Autori: Vergil Marian Muraru, Cornelia Muraru-Ionel, Ion Pirna, Ion Tenu, Petru Cardei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25504

Abstract Preliminary investigation of contaminated soil in the surrounding area of a petroleum tank has been carried out based on fluorescence techniques: excitation emission matrix (EEM) and synchronous fluorescence scan (SFS). A fluorescence fingerprints library containing several EEM and SFS maps for various dilutions of Romanian crude oil in methanol, was used to confirm the identity of the soil contaminant. A calibration curve was created to estimate the contamination level of soil sampl...
Autori: Dan Savastru, Elfrida M. Carstea, Gabriela Pavelescu, Luminita Cristescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25505

AbstractThe mechanization technologies of soil works have a major impact on physical state of soil. This situation is generated by the mechanical action of working parts which are involved in soil works and by the traffic of running systems of tractors and agricultural machines.These mechanization technologies have been tested to determine which of them correspond to the highest degree of sustainable agriculture concept and ensure protection, preservation and improvement of agricul...
Autori: Cornelia Muraru-Ionel, Gerard Jitareanu, Ioan Tenu, Petru Cojocariu, Vergil Marian Muraru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25506

Abstract Bioremediation of heavy metal contaminated soil is one of the major concerns of our days. Phytoextraction has been lately utilized as an alternative of in situ remediation technology for polluted soils but is generally perceived to be too slow. Even so, phytoextraction is an efficient long lasting, accessible and environmentally friendly technique. The aim of this paper was to evaluate the phytoextraction potential of bean (Phaseolus vulgaris) in stress conditions induced by heavy me...
Autori: Alina Stingu, Irina Volf, Valentin I. Popa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25508

Abstract The paper presents the experimental results, obtained using a pilot installation and hot-water boilers for reducing the pollutants emissions in combustion of heavy liquid fuels by using of additives for catalyzing of burning processes. The experiments were made using additives based on iron and cerium carboxylates. Experimental results, which are presented both in variant of heavy liquid fuels burning with additives and without additives, highlight the reducing of pollutants emissio...
Autori: Aurel Gaba, Stefania Iordache, Mircea Vladescu, Dan Ungureanu, Petrica Vizureanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25509

Abstract The rationality of allotting the resources for investments in sustainable agriculture needs the selection of alternative projects depending on numerous factors. The decision analysis process allows the identification of one variant with the highest utility that corresponds to the exigencies of economic, social and environmental impact efficiency. The integrated approach of the objectives specific for sustainable development actually leads to the selection of the investment portfolio ...
Autori: Camelia Burja
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25512

Abstract This paperwork tried to simulate the combustion inside the naval engines using the newest computer methods and technologies with the result of a diverse and rich palette of solutions, extremely useful for the study and prediction of complex phenomena of the fuel combustion. The paperwork is contributing to the theoretical systematization of the area of interest bringing into attention a thoroughly inventory of the thermodynamic description of the phenomena which take place in the co...
Autori: Nicolae Buzbuchi, Liviu Constantin Stan, Daniela-Elena Mitu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25514

Abstract This paper is a study about the symbiosis between the environmental aspects – innovation and competitive character of an industrial organization in our modern and sophisticated world. In actually global market and in conditions of world sever recession, for any organization or economic sector, the chance for surviving and development is given by adopting an innovative culture. This work contains case studies about the necessary steps for developing an innovative organization, a deb...
Autori: Florin Negoescu, Eugen Axinte, Gheorghe Nagit, Adrian Iosub
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25517

Abstract Alignment of the manufacture technologies to the environment European directives requirements represents a modern approach of the environment issues considered as integrant part of the lasting development which will represent one of the connecting ways of the Romanian economy to the globalization process. In the present work a pertinent study is made regarding the harmonizing into the limits imposed by the environment European directives (Dir. 99/13/CE, Dir. 76/464/CEE and Dir. 2000/...
Autori: Stefan Velicu, Petrica Corabieru, Dumitru Zait, Anisoara Corabieru, Dan Dragos Vasilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25518

Abstract The idea of sustainable farming relies on raising its yield along with a safe and constant gain with minimum environmental impact and by ensuring the population’s food security. Sustainable agriculture is a large concept that encompasses the complexity of this production system, the biological stability of farming plants and varieties, the conservation and protection of natural resources, but also the implementing and generalization of high-output modern technologies. Sustainable a...
Autori: Brindusa Robu, Carmen Cătălina Ioan, Edinel Robu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25520

Abstract The paper focuses on occupational hazards and the determination of risk levels. Indoor climate, lighting, noise, chemicals and dust are examined. A simple/flexible risk assessment method is provided. The results of measurements of occupational hazards in six industries (mechanical, printing, wood, plastic, clothing and water purification plants) in Estonia are presented. The overall purpose of the paper is to draw the attention to the importance of measurements of occupational hazard...
Autori: Piia Tint, Marina Jarvis, Karin Reinhold, Onnela Paas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25521

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 The work studies the orientations regarding the recycling of the products from the industry of auto-vehicles parts and components, orientations that can provide solutions which permit to the enterprises producing auto components the efficient management of the related products and services during the whole life cycle of the products, from the conception phase to that of recycling. The new way of approaching the development of metallic auto products promoted in Romania will contribut...
Autori: Petrica Corabieru, Stefan Velicu, Dumitru Zait, Anisoara Corabieru, Dan Dragos Vasilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25524

Abstract A friendly technology with the environment which consists of the elaboration of carbon steels through specific proceedings to powder metallurgy has in view the contribution of methane gas in iron powders at the same time with sintering. This technology is advantageous from various points of view: the final product is a part which does not need afterward processing with solid waste result and therefore the specific energy consume is lower, the wear and corrosion behavior is similar to...
Autori: Olimpia Ghermec, Cristian Ghermec, Traian Popescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25526

Abstract Life Cycle Cost Analysis (LCC) and Social Life Cycle Analysis (SLCA) are available methodologies for the economic and social assessment of a product or process along its life cycle. Different approaches regarding LCC and SLCA have recently emerged and several hypotheses are currently on testing and discussing. This paper shows existing LCC and a SLCA approaches as well as the methodology applied in the particular case of a paper recycling process. This study gathers part of the Europ...
Autori: Beatriz Ferreira Pozo, Antonio Dobon Lopez, Carlos Lopez Lopez, Maria Calero Pastor
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25529

Abstract The presence of heavy metals in the environment is a major concern due to their non-biodegradability, bioaccumulation tendency, persistence in nature and toxicity to many life forms. Different treatment techniques for wastewater laden with copper have been developed in recent years to decrease the amount of wastewater produced and to improve the quality of the treated effluent. All techniques have their advantages and limitations in application. One of the most used techniques to rem...
Autori: Petru Bulai, Catalin Balan, Camelia Scripcariu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25531

Abstract The constructed wetlands are considered as a low-cost alternative system for nitrogen removal. Shale was selected as a media in constructed wetlands, on the basis of adsorption capacity and suitability for plant growth. The specific objective of this study was to evaluate nitrogen adsorption capacity for using as a media in constructed wetlands. Shale was sieved into 5 particle sizes Shale A-E. The physical and chemical characteristics of shale showed that it is suitable to be use as...
Autori: Amara Daothaisong, Jareeya Yimrattanabovorn
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25535

Abstract Romania’s drinking water and wastewater sector is currently going through a process of regionalization. This process involves a replacement of a local-focused governance structure by a regional-focused governance structure. The objective of this paper is to explore and explain this regionalization from a governance perspective. In two case studies, the situation before and after the regionalization are investigated. Analyses of the case studies show that the local-focused governanc...
Autori: Joanne Vinke-de Kruijf, Valentina Dinica, Denie C.M. Augustijn
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25536

Abstract Chlorophenols are contaminants in soils, sediments, surface waters and groundwater, largely because of their worldwide utilization in the last 50 years as wood preservatives and general biocides in industry and agriculture. The toxicity of chlorophenols and their persistence in the environment require advanced treatment techniques for their removal. Surfactant-modified natural zeolites (SMZs) represent an important class of sorbents for water treatment. This work presents a comparat...
Autori: Roxana Elena Apreutesei, Cezar Catrinescu, Adrian Ungureanu,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25537

Abstract In the textile finishing and dyeing industries, the total volume of water consumed is around 150 millions tons/year, and thus very large quantities of water are processed and produced as wastewater by textile plants. Quality indicators of textile wastewaters, like BOD and COD, have values which, in some cases, exceed 5 times the maximum concentration value (allowed by the national quality standards). One of the greatest concerns in wastewater treatment of a textile effluent is the co...
Autori: Daniela Cailean, , Florin Brinza
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25538

Abstract Modern requirements for activated carbons utilized in the refinement of water/alcohol mixtures are discussed. It is demonstrated that activated carbons obtained from coconut shells and apricot and peach stones are very similar in terms of durability, physicalchemical and adsorptive properties, providing high quality sorting. Utilization of novel stone-derived carbons allows 2,5 fold enhancement of filtration rate, as well as 3 fold enhancement of working resource of carbon columns. ...
Autori: Viktor Mihailovici Mukhin, Natalia Alexandrovna Shubina, Irina Mihailovna Abramova, Inna Dmitrevna Zubova, Tudor Grigore Lupascu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25543

Abstract In this work the experimental conditions to synthesize, by direct hydrothermal synthesis, self-bonded pellets of ETS-10 phase containing iron were studied. The following gel composition was used: xNa2O-0.6KF-1.28xHCl-yFe2O3-0.2TiO2-1.49SiO2-39.5H2O with 0.8Â???xÂ???1.4 and 0.015Â???yÂ???0.08. The products obtained were characterized through X-ray diffraction on powders (XRD), thermal analysis (TG, DSC, DTG), scanning electron microscopy (SEM) and microanalysis (EDS). The data obtai...
Autori: Pierantonio De Luca, Danilo Vuono, Monica Filice
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25544

Abstract Nowadays the global climate change is one of the most significant questions from environmental, social, political and economic point of views. Global warming caused by green house gases emitted into the air is a result of the human activities (Energy Revolution, 2005-2007). The majority of the industrial processes has significant impact to human life and deteriorates the natural environment. In this paper different technologies (three industrial technologies) will be dealt with spec...
Autori: Zsofia Kovacs, Orsolya Kakucs, Janos Lako, , Tamas Fulop, Tatiana Yuzhakova, , Endre Domokos
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25545

Abstract The aim of the study is to outline new opportunities of improving buildings ambient comfort and thus to determine energy consumption cut down. The second half of the XX century witnessed the development of society disregarding the extent to which environment was affected by the industrial production; pollution was triggered by the widespread industry which made use of technologies whose main target was the increase of production output at any cost, an aggressive industry with respect...
Autori: Vladimir Corobceanu, Răzvan Giuşcă, Raluca Giusca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25549

Abstract Plasma is often called the fourth state of matter. It is distinct from other lower-energy states of matter, most commonly solid, liquid, and gas, although it is closely related to the gas phase in that it also has no definite form or volume. Plasma technique may use any gas or gas mixture, within equipment limitations. Each gas or mixture of gases produces distinctive plasma, making possible a very diverse range of chemical environments. Besides the recombination mechanisms developed...
Autori: Marian I. Totolin, Ghiocel E. Ioanid, Iordana Neamtu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25550

Abstract This paper introduces and analyses the results of some research regarding the recovery of fine chips from the slurry resulted from the finishing operations (grinding) of the parts used in automobile industry. Little chips, in the form of slime, represent a very important source of raw materials when preparing the powders and at the same time it can be appreciated that the volume of these chips in the form of slurry is high enough so that its use can substantially diminish the product...
Autori: Olimpia Ghermec, Cristian Ghermec, Marin Didu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25552

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 This paper aims at developing a study concerning a prototype production opportunity and its use for Small and Medium Enterprises (SMEs) as polluters and consumers, as well as for household consumers. The technical impact can be assessed through introduction of a new and low polluting technology which does not change the taste and smell of water, does not need chemical additives and uses a series of small and easy maintainable equipments with low costs. The method called �documenta...
Autori: Daniela Suteu, Irina Volf, Luminita Lupu, , Carmen Ioan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25555

Abstract The purpose of Strategic Environmental Assessment (SEA) is to ensure that environmental considerations inform and are integrated into strategic decision-making in support of environmentally sound and sustainable development. In particular, the SEA process assists authorities responsible for plans and programs, as well as decision-makers. The main benefits of SEA consist in: providing high level of environmental protection, improvement of the quality of plan, program or policy making,...
Autori: Brindusa Robu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25558

Abstract The Integrated Water Resources Management (IWRM) concept evolved over time, the focus on river basin management, consultation and coordination with all water users, and the use of the â€?polluter pays?? principle being all included in the EU Water Framework Directive (EC Directive, 2000), which forms the basis of water management undertaken in Europe. The role and significance of water resources for sustainable development, as well as the water crisis experienced nowadays are ...
Autori: , Claudia Cojocariu, Corina - Petronela Musteret, Ioana Gabriela Dascalescu, Ionut Caraene
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25559

Abstract Transferability process identifies the transportation projects which could be implemented successfully in different cities in order to encourage the good practices. This paper proposes a method to evaluate the environmental efficiency of a project by using a hybrid approach based on utility theory and data mining techniques. Transferability principle is applied to show the environmental efficiency of an access controlled area in the hyper centre of two different cities. COPERT III te...
Autori: Catalin Popescu, Luminita Ion, Tatiana Cucu, Jean-Marie Boussier, Augustin Mitu, Daniela Uta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25560

Abstract University campuses can be seen as â€?small cities’ due to their high population (students, professors, employees) and corresponding high traffic flow, which may have a significant impact on both environment and people health. The objective of this work was to analyze particulate matter seasonal trends in the university area of Cosenza (University of Calabria). The relationship between sources emission, meteorological parameters and particle properties was defined. Sampling was co...
Autori: Monica Filice, Pierantonio De Luca, Giuseppe Piero Guido
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25564

Abstract Ballast water is used to supply stability on ships that have no load. It is loaded on before departure and often carries stowaways in the form of tiny organisms. To avoid that, the ballast water can be treated on board. Treating ballast water to free it from potentially harmful invasive species is a challenging problem. Alfa Laval in cooperation with Wallenius Water has been developed one system that cleans ballast water during ballasting and de ballasting operation. The paper presen...
Autori: Liviu Constantin Stan, Nicolae Buzbuchi, Feiza Memet
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25567

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 The textile wastewaters have a diverse composition depending both on the used raw materials and applied manufacturing technologies. These wastewaters may contain various pollutants such as organic compounds (e.g. residual dyes), suspended solids, metal ions etc. Most of dyes are synthetic compounds with aromatic molecular structures and non-biodegradable. The oxidative destruction via homogenous oxidation processes with hydrogen peroxide (simple chemical oxidation with H2O2 or advanc...
Autori: Carmen Zaharia, Daniela Suteu, Augustin Muresan, Rodica Muresan, Alina Popescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25570

Abstract This article presents the use of salt water springs in the Moldavian Oriental sub-Carpathians for treating certain diseases, based on archaeological discoveries and ethnographical surveys, correlated with known facts from the literature in the field. Nevertheless, what differentiates it from other similar area in Europe is the intense, unexpected continuity of traditional, nonindustrial water supplying coming from salt springs. Among the uses of salt water and halite in the area, th...
Autori: Ion Sandu, Marius Alexianu, Roxana-Gabriela Curca, Olivier Weller, Constantin Pascu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25574

Abstract Some doses of compost obtained in farms were tested during 2004-2006, comparative to chemical fertilization, at S.C. Soimul S.R.L. from Vacareni Plain, Jijila village, Tulcea district. It was found out that fertilization with 30 t/ha of compost had established the highest production of wheat Dropia variety, 6512 kg/ha, with 40.7% higher than unfertilized variant and 16.8% higher than N160P80K80 fertilized variant. The highest protein content of 15.21% has been obtained in the case o...
Autori: Mihail Axinte, Teodor Robu, Marius Zaharia, Costel Moglan, Carmen Ghitau
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25575

Abstract Heavy metals produced and released by anthropogenic activities generate serious environmental problems. Ions of toxic metals can bind to the mineral surface in a number of ways, including absorption, adsorption, precipitation, ion exchange. The paper shows that the fate and migration of heavy metals in soils strongly depend on the physical properties and chemical and mineralogical composition of such environments. Cadmium is one of the most toxic metals with carcinogenic and teratog...
Autori: Vasile Lucian Pavel, Dumitru Bulgariu, Laura Bulgariu, Raluca Maria Hlihor, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25577

Abstract In Europe, recovered paper is a valuable raw material for the paper industry already since the early 20th century, actually corresponding to half of the total use of fibres for paper and board production. The aim of this paper is to describe the present status of paper recycling in Europe and thereby to create a data basis for evaluation the results of the FP7 project ?Recovered Paper Sorting by Innovative Technologies ? SORT IT. The overview is based on specific questionnaires addre...
Autori: Dan Gavrilescu, Elena Bobu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25579

Abstract In order to obtain new complexes of Fe(III) with multiple uses, their characteristics, important applications and also the obtaining conditions are studied. The obtaining conditions consist in mixing solutions of the same concentrations of ligand 2 amino-6-methoxy-benzothiazole sulphonic acid??†’1-naphtol-4-sulphonic acid with FeCl3. The solutions are mixed in molar ratios of 1:1, 2:1 and 3:1 (ligand to central metallic atom). For determining the molar ratio ligand:central metall...
Autori: Daniela Zavastin, Doina Sibiescu, Igor Creţescu, Ioan Roşca, Mihaela Dana Tutulea, Mihaela Vizitiu
ISSN: 1843-3707
http://www.ecozone.ro/reviste.php?RID=25581

Abstract The Environment Action Program foresees the development of a Thematic Strategy concerning the sustainable use of natural resources and waste management (Report EUR 21002 EN, 2004). In this context, the activities regarding the research and industrial development related to waste valorization through recycling and reusing have been grown. The wastes resulted from the fine ceramic technological process (scraps, used molds etc.) may be valorized. The used molds can be valorized in other...
Autori: Ion Balasanian, Liliana Lazar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25582

Abstract As a result of the global climatic changes generated by the alteration of the environment through polution, the ecosystems' natural ressources are incontrollably distributed, generating unforseeable effects at the level of the subsequent evolution of the natural balance factors. One of the greatest challenges of the science concerned with environment protection, is that of real time monitoring of the biochemical constitution. The real time monitoring of a great number of biochemical ...
Autori: Andrada Pretorian, Bojin Dionezie, Gabriel Epure, Ion Savu, Lucia Mutihac, Mihaela Muresan, Nicoleta Petrea, Petrisor Zamora Iordache, Razvan Petre, Rodica Lungu, Vasile Somoghi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25583

Abstract This work presentes a study of preparation and stability in aqueous medium of complexes obtained by the reaction between Fe(III) with 2-amino-6-methoxy-benzothiazol-sodium sulphonate ??†’1 naphtol-4-sodium sulphonate. In this purpose, the investigation methods applied were as follows: pH-metry, conductometry, and the UV-VIS spectrophotometry. The molar combination ratio of ligand to central metallic atom, and the stability constants for new obtained compounds were determined usin...
Autori: Doina Sibiescu, Gabriela Carja, Ioan Roşca, Laura Chirila, Mihaela Vizitiu, Romen Butnaru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25585

Abstract Wastewaters of textile and leather dying industries contain significant quantities of water-soluble dyes. Moreover the temperature and pH of these wastewaters may be controlling variables affecting the biosorption performance. In this study the sorption of dark blue dye by Aspergillus biomass and peat was studied as a function of temperature, initial dye concentration, and initial pH values. In addition, the effects of sorbent dosage on the sorption processes were systematically stud...
Autori: Cornel Cojocaru, Cornel Pohontu, Igor Creţescu, Mariana Diaconu, Roxana Elena Benchea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25587

Abstract The slags are an important waste and by-products of metallurgical industry. The present paper summarizes results obtained from physical and chemical analyses on metallurgical slag provided from S.C. ?Mittal Steel Galati? S.A. The physical structure and gradation of granulated slag depend on the chemical composition of the slag, its temperature at the time of water quenching, and the method of production. The following mineralogical components were noticed through bypowder X-ray diffr...
Autori: Maria Cioroi, Licuta Nistor Cristea, Igor Creţescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25588

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 Commercial pure titanium (Cp-Ti) and titanium alloys are used on large scale in restorative dentistry due to their advantages as compared with other similar materials: chemical inertia, low density, high strength, high corrosion resistance in biological media and increased biocompatibility.The effect of fluoride and pH on the corrosion behaviour of Cp-Ti and a new Ti50Ta alloy were examined by open circuit potential (EOC) measurement, linear polarization, potentiodynamic polarization...
Autori: Daniel Mareci, Daniel Sutiman, Georgiana Ciurescu, Igor Creţescu, Romeo Chelariu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25591

Abstract In the last decades there has been a rapid evolution of techniques for production of bleached pulp. Much of these processes have been environmentally driven. New techniques have been developed in order to replace chlorine-based reagents in producing bleached pulp. Reducing the environmental impact of pulp production can be attain by using non-pollutant bleaching reagents like oxygen and related compounds. This paper deals with present findings and general trends in environmentally-s...
Autori: Adrian Catalin Puitel, Alexandru Botar, Dan Gavrilescu, Gheorghe Dutuc, Grigore Craciun
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25592

Abstract The use of biomaterials as biosorbents for treatment of wastewaters will provide as a potential alternate to the conventional treatment methods. The main advantages of biosorption are high selectivity , cost effectiveness and good removal performance. World wide numerous low cost bio materials have tried for biosorption of dyes. In this present investigation, the dead biomass of Penicillium sp. fungus and wood sawdust was used as biosorbents and their capacity to removed malachite gr...
Autori: Cornel Pohontu, Florin Luca, Igor Creţescu, Manea Liliana, Mariana Diaconu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25593

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 The paper tackles the issue of ecological tourism in Romania?s North-East Region. This region offers some opportunities such as low costs for tourist operators and highly qualified local hosting personnel that can make it attractive. The concept of sustainable development is presented and its features are discussed in the context of tourism. Ecological education is presented as a collateral effect that naturally derives from developing a sustainable tourism, especially in Romania?s N...
Autori: Brindusa Robu, Carmen Cătălina Ioan, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25597

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 The former Arad Chemical Fertilizer Plant had an important polluting effect on environment and, although it was shut down in 1990, its environmental heritage still exists. The paper contains a short description of the former plant and its impact on the environment, mainly on the quality of water and soil and emphasizes the effects of polluting heritage that still exists. Today, one of the major problems on the platform of the former Fertilizer Plant is the existence of all concrete b...
Autori: Aurica Grec, Florin Dumescu, Ladislau Klein
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25599

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 The aim of this study is the evaluation of photo-Fenton as a suitable advanced oxidation process to degrade ampicillin and streptomycin antibiotics. The degradation was studied by monitoring the organic substrate concentration changes in aqueous solution as a function of reaction time using COD analysis. The oxidation process follows two successive stages. In the first stage (I) the oxidation of the antibiotics takes place with high reaction rate, leading to intermediate oxidation pr...
Autori: Cristina Orbeci, Daniela Simina Stefan, Ion Untea, Madelene Dancila
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25602

Abstract Unlike the P. shermanii and S. cerevisiae cultures, the study on the distribution of oxygen transfer in stirred bioreactor for P. chrysogenum free mycelia broths indicated that this process is controlled mainly by the high apparent viscosity of broths, and less by the presence of fungus biomass. For this reason, the influence of fungus accumulation on the reduction of kla is attenuated compared with that obtained for bacterial or yeasts broths. The lower influence of fungus biomass i...
Autori: Anca-Irina Galaction, Dan Caşcaval, Marius Turnea, Stefanica Camarut
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25606

Abstract This paper applies a fuzzy method for the estimation of the daily electrical energy consumption of the fresh water hydrophore stations of a water distribution system. Based on the uncertainties of the water distribution system, the fuzzy logic was used to simulate a correlation between water and electrical energy quantities. Thus, the proposed method is proven as a useful tool for estimation of the daily electrical energy consumption considering the flow and the pressure growth of th...
Autori: Gheorghe Grigoras, Marcel Istrate
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25607

Abstract Some samples consisting in silica functionalized in different degrees with dihydroxy-azomethine groups have been tested as sorbents for copper (II) ions from aqueous solutions in different conditions. An indirect monitoring procedure for the complexing process was approached: UV-VIS absorption intensity ? time variation for the metal-containing solution in which complexing silica was soaked. In order to find the conditions in which the maximum efficiency in the metal absorption can b...
Autori: Ciprian-George Piuleac, Maria Cazacu, Silvia Curteanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25608

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 Prompt and accurate residential fire detection is important for on-time fire extinguishing and consequently reducing damages and life losses. To detect fire sensors are needed to measure the environmental parameters and algorithms are required to decide about occurrence of fire. Recently, wireless sensor networks (WSNs) have been used for environmental monitoring and real-time event detection because of their low implementation costs and their capability of distributed sensing and pr...
Autori: Majid Bahrepour, Nirvana Meratnia, Paul J. M. Havinga
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25611

Abstract The paper presents a novel approach which aims to support the training of decision makers in maritime environmental pollution policies via an intelligent tutoring system that focuses on the automatic generation of self-assessment material. More specifically, the paper reports on the automatic construction of multiple-choice question tests from knowledge bases i.e. domain ontologies, instances, if-then rules, and multimedia objects. The reported work has been conducted with a prototyp...
Autori: Andreas Papasalouros, Konstantinos Kotis, Nikitas Nikitakos
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25613

Abstract A method based on measuring substrate depletion rate was developed to evaluate the denitrifying activity of activated sludge in suspension and in biofilm form in anoxic serum flasks. The adapted activated sludge inoculum was grown as biofilm in an anoxic rotating biological contactor (RBC). Acetate was used as external carbon source to obtain a carbon to nitrogen ratio (C/N) of 2. The results showed that the specific activity of cells in biofilm form was higher than in planktonic for...
Autori: Elba Vivanco, Juan Carlos Ruiz, Paola Poirrier, Rolando Chamy, Yves Lesty
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25617

Abstract The chlorine is the reagent of the widest application in disinfection processes of drinking water but it shows the short coming of reacting with the organic substances therein giving trihalomethanes with possible cancerous action. For this reason the tendency is noticed of replacing chlorine by reagents with higher disinfecting properties and lack of final toxic products. The chlorine dioxide could be used to this purpose. A comparative study on the effects obtained by treating the P...
Autori: Corneliu Oniscu, Dan George Popovici
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25620

Abstract The adsorption behavior of bael tree (BT) leaf powder for cadmium ions from aqueous solutions has been investigated as a function of appropriate equilibrium time, adsorbent dose, adsorbate concentrations and pH using a batch system. Studies showed that the pH of aqueous solutions affected cadmium removal as a result of the fact that removal efficiency increased with increasing solution pH. The maximum adsorption was 93.56% at solution pH equal to 6.0, contact time of 30 min and initi...
Autori: Ponnusamy Senthilkumar, Rangasamy Gayathri
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25621

Abstract Artificial neural networks (ANNs) are capable of learning the relationships between the dependent and predictor surface water quality variables and have a high ability to predict from the new data set. In this study, two different ANN methods, the feedforward network (FFN) and the cascadeforward network (CFN) were applied to predict two surface water quality variables such as chlorophyll-a (Chl-a) and fecal coliform (FC) using twelve other variables as an input to the models. Both me...
Autori: Hasan Merdun, Ozer Cinar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25623

Abstract Finding solutions to the waste problems generated by human activity represents a high concern of authorities and environment specialists for many years. Furthermore, energy conservation and reduction of the dependency from fossil fuels represents a top priority of governmental organizations at world level. The developments in alcohol industry have resulted in the increase of wastewaters which are highly polluted with organic substances, causing environmental pollution hazards. A wide...
Autori: Carmen Mateescu, Ionel Constantinescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25626

Abstract The Jajrood River watershed is one of the main drinking water resources of Tehran, the capital city of Iran. In addition it provides many recreational usages. However, a variety of microbial pollutions is commonly perceived in the Jajrood River, among them a high concentration of coliform group bacteria that has caused strong concerns. In this article, different aspects of microbial pollution as well as the main microbial pollution sources in the region are discussed. Coliform group ...
Autori: Mahdi Jamshidi, Mahdi Maghrebi, Masoud Tajrishy
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25627

Abstract Mathematical modeling of the ultrafiltration (UF) process is motivated by the complexity of retention phenomena that occur during the UF in conjunction with the complexity of wastewater matrices submitted to ultrafiltration, as well as by the need to predict the process behavior in extreme conditions, such as high pollution loads for UF-membrane cleaning cycles optimization or for automated control of the process. Thus, series of laboratory-scale ultrafiltration experiments were perf...
Autori: , George Barjoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25630

Abstract In this study the possibility to apply the oxidation process for treating textile effluents, by using hydrogen peroxide and Fenton process was evaluated through determining the color and chemical oxygen demand (COD) removal. The experimental variables studied include the dosages of hydrogen peroxide and iron salts, oxidation time and pH value. The result showed that oxidation process using hydrogen peroxide alone is inefficient in COD and color removal, since only 25 % of COD removal...
Autori: Abdelnaser Omran, , Marniyanti Mamat Noor
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25631

Abstract The olive mill wastewater (OMW) is a stable emulsion composed by water, olive pulp and residual oil. An approach for using this waste as a renewable resource is of greater interest. Several authors have been studding physicochemical treatment methods. However, the biological treatments allow not only the treatment, but also the effluent valorization, by producing several valuable products. This effluent is also a source of natural antioxidants and its extraction is economically attra...
Autori: Carina Pereira, Cristiana Goncalves, Isabel Belo, Madalena Alves
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25635

Abstract The aim of this work was the evaluation of the denitrification potential of a consortium of activated sludge adapted to anoxic conditions. As the carbon source is the main parameter influencing the denitrification process, in the first stage three carbon sources (acetate, citrate and glucose) were assayed in batch activity tests. The highest denitrification efficiency was ttained with acetate, being nitrate and nitrite completely reduced. The adapted sludge was then used as a potent...
Autori: Joana Azeredo, Pilar Teixeira, Rosario Oliveira, Zelia Fernandes
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25638

Abstract A method based on measuring substrate depletion rate was developed to evaluate the denitrifying activity of activated sludge in suspension and in biofilm form in anoxic serum flasks. The adapted activated sludge inoculum was grown as biofilm in an anoxic rotating biological contactor (RBC). Acetate was used as external carbon source to obtain a carbon to nitrogen ratio (C/N) of 2. The results showed that the specific activity of cells in biofilm form was higher than in planktonic for...
Autori: Manuel Mota, Pilar Teixeira, Rosario Oliveira, Susana Cortez
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25639

? SUSTAINABLE CONCRETE HARDENING PROCESSES IN NORMAL CLIMATIC AND THERMAL TREATMENT CONDITIONS ? THE ENVIRONMENTAL DIMENSION ? AN INTERDISCIPLINARY RESEARCH AREA ? MENU PLANNING STRATEGY BASED ON ECOLOGICAL FOOTPRINT ? EVALUATING ENVIRONMENTAL IMPACT OF NIGERIAN COMPOSTED WASTES USING LABORATORY EXTRACTION TEST ? IN SITU RADIOFREQUENCY FIELD LEVEL ASSESSMENT IN TWO URBAN AREAS IN ROMANIA: OPEN QUESTIONS TO ELECTROMAGNETIC POLLUTION ? INNOVATIVE SOLUTION FOR WARNING ON HI...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25657

? 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

? MUNICIPAL SOLID WASTE LANDFILLING AND TREATMENT OF RESULTING LIQUID EFFLUENTS ? ROMANIA: ENTREPRENEURIAL VALUES AND SUSTAINABILITY ? THE COMPRESSIVE STRENGTH OF WOODEN BRIQUETTES USED AS RENEWABLE FUEL ? ECO-FRIENDLY EXTRACTION AND SEPARATION METHODS OF CAPSAICINES ? ADDRESSING ISSUES OF GEOENVIRONMENTAL RISKS IN DOBRUJA, ROMANIA/BULGARIA ? ADSORPTION OF 2,4-DINITROPHENOL AND 2,6-DINITROPHENOL ONTO ORGANOCLAYS AND INORGANIC-ORGANIC PILLARED CLAYS ? APPLICATION O...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25659

? 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

? AN ASSESSMENT OF OPERATIONAL PARAMETERS FOR THE REMOVAL OF CHLOROPHENOLS FROM WASTEWATER ? ENVIRONMENTAL SCIENCES: A PSYCHOLOGICAL-BEHAVIORAL MODEL FOR RESEARCHERS ? ECOLOGICAL AGRICULTURE: DYNAMICS OF THE BIOLOGICAL ACTIVITIES IN SOILS CULTIVATED WITH MAIZE UNDER THE INFLUENCE OF ORGANIC FERTILIZATION ? SOLAR-ASSISTED JOULE-BRAYTON ENGINES USED TO REDUCE CARBON DIOXIDE EMISSIONS ? STUDY OF THE ENVIRONMENTAL EFFECTS OF HEATING SYSTEMS ? MIXED JET-VORTEX METHOD FOR ...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25662

? POST-DARCY FILTRATION THROUGH RIGID PERMEABLE MEDIA ? BIOSORPTION OF Cr(VI) FROM AQUEOUS SOLUTIONS ONTO Hydrilla verticillata WEED: EQUILIBRIUM, KINETICS AND THERMODYNAMIC STUDIES ? IMPACT OF BUILDING A TIDAL GATE ON THE YONGJIANG RIVER IN CHINA ? MONITORING OF THE HYDROTECHNICAL TORRENT CONTROL STRUCTURES: A STATISTICAL APPROACH ? RESEARCH ON SOIL PROPERTIES CONSERVATION DURING THE PREPARATION OF GERMINATION BEDS IN GREENHOUSES ? MANAGEMENT OF THE POTATO CROPS FOR MIN...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25664

? 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

Biosorption of lead (II) onto the biosorbent, represented by untreated S. cerevisiae and NaOH-treated S. cerevisiae was examined and the effects of contact time were investigated. The lead (II) biosorption was fast and equilibrium was attained within 90 mins. The maximum removal ratios of lead (II) for untreated S. cerevisiae and NaOH-treated S. cerevisiae after 3 h were 48.6% and 92.5%, respectively, with initial lead (II) concentration of 40 mg/L and optimum pH of 5.0. Data obtained from batch...
Autori: Ying Zhang, Yingjie Dai, Baiyin Liu, Fang Ma, Ru Zheng, Limin Donghttp://www.ecozone.ro/reviste.php?RID=25670

The removal efficiency of p-xylene from gas stream was experimentally investigated in a dielectric barrier discharge (DBD) reactor, which was combined with catalyst, MnO2/Al2O3 pellets, in the discharging and the afterglow area, respectively. The CO2 selectivity of the two kinds of structure was also discussed. The results showed that in both the situation, the synergetic removal efficiency of p-xylene by the DBD-catalyst hybrid system increased with increasing the discharge power and decreasing...
Autori: Hongxia Liu, Yun Liuhttp://www.ecozone.ro/reviste.php?RID=25674

Material Flow Analysis (MFA), as a method of Industrial Ecology (IE), is a useful tool to measure and analyze the material metabolism or physical dimensions of a society’s production and consumption at various scales. However, there are different MFA frameworks and points corresponding to different researching scales. This paper proposes to introduce a physical Input- Output Table (PIOT), as means to establish the Eco-industrial parks MFA model (EIPs-MFA) and indicator systems, for analyzing t...
Autori: Yao Shi, Rusong Wang, Jingru Liu, Jianxin Yang, Tianzhen Juhttp://www.ecozone.ro/reviste.php?RID=25676

As one of the very few countries using coal as its dominant energy resources, China has the coal production exceeding one thirds of in the world, added to it are the problems of environmental damages and soil resource destructions result from the solid waste, such as mining waste discharged in the process of coal production and fly ash deserted from the electric power plant etc. In this paper, the mineral ingredient of waste and fly ash was tested by X-ray Diffraction. Meanwhile, the deformation...
Autori: Yanli Huang, Jixiong Zhang, Qiang Zhang, Shoujiang Niehttp://www.ecozone.ro/reviste.php?RID=25677

Rhizobag incubation experiments were conducted to study microbial biomass carbon (MBC), microbial biomass nitrogen (MBN), soil respiration and enzyme activity (urease and phosphatase) in the rhizosphere soil of three different wetland plants and its influence on the removal of total organic carbon (TOC) and total nitrogen (TN). MBC, MBN, soil respiration and enzyme activity were higher in the rhizosphere than in the non-rhizosphere soil of the wetland plants. Microbial activity in the rhizospher...
Autori: Defu Xu, Hua Fang, Xianghua Xu, Xiaoli Zhao, Yingxue Lihttp://www.ecozone.ro/reviste.php?RID=25679

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

A multi-stage filtration system located next to Lushan River in Gaofeng Town of Chongqing, P.R. China was built to indicate the impact of loading rate on agricultural runoff purification performance. The experimental system was proved to be effective in the removal of agricultural non-point source pollutants, and it was adapted to the changes of influent quality and quantity. The average removal rate of chemical oxygen demand (COD), ammonia (NH4 +-N), total nitrogen (TN) and total phosphorus (TP...
Autori: Lei Huang, Xu Gao, Wei-dan Xie, Jun-hong Chen, Xiao-xia Ma, Ming-guo Chen, Jin-song Guohttp://www.ecozone.ro/reviste.php?RID=25682

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 chlorpyrifos-degrading strain of Stenotrophomonas acidaminiphila, lux-β was chosen for research object, and the survival and chlorpyrifos-degrading activity of strain lux-β in the soil with different treatments have been investigated in this study, so as to provide technique support for monitoring the colonization and degrading activity of chlorpyrifos-degrading bacteria in natural environment. The result indicated that the quantity of lux-β in the soil rose first and decreased ...
Autori: Dao-Sheng Wang, Ri-Mao Hua, Xin-Yun Tang, Rui-Xue Li, Jun Zhang, Yun-Lu Wanghttp://www.ecozone.ro/reviste.php?RID=25684

Treatment of mustard wastewater with high salinity and organic concentration by electrochemical degradation was studied. The influence of the critical parameters of electro-oxidation such as pH, current density, salt concentration and energy consumption on the removal efficiency of COD and NH3-N was studied using porous carbon electrode. It was found that the COD and NH3-N removal efficiency could be enhanced by increasing pH, current density and salt concentration. The current density of 0.032A...
Autori: Hainan Ai, Qiang He, Hongxiang Chai, Xuebin Hu, Tengrui Longhttp://www.ecozone.ro/reviste.php?RID=25685

Acidithiobacillus ferrooxidans plays an important role in the pyrite oxidation process and has been widely studied in order to determine the kinetics of the reactions, but the details of the oxidation processes on the surface of pyrite keeps poorly known. In this study, the bio-oxidation process of pyrite by Acidithiobacillus ferrooxidans was studied by comparing with abiotic oxidation by Fe3+. The attachment of Acidithiobacillus ferrooxidans on pyrite surface was found by using Scanning Electro...
Autori: Lei Jiang, Huiqun Yang, Yuruo Tao, Jinyan Yanghttp://www.ecozone.ro/reviste.php?RID=25686

It is a promising way for CO2 capture and sequestration by hydrates crystallization. In this study, the characteristics of CO2 hydrate formation are investigated in a small scale dynamic reactor under pressure conditions from 2.0-3.5 MPa and temperature varied between 0.5-4.0Â?C. The effects of supercooling degree and pressure on hydrates formation were discussed. Hydrates formation can be completely finished within 150 min and the final pressure-temperature points of system are just located on ...
Autori: Ni Liu, Xiaobo Xuan, Daoping Liu, Yingming Xiehttp://www.ecozone.ro/reviste.php?RID=25689

Chlorine dioxide (ClO2) is widely used as disinfectant in tertiary sewage treatment process. In order to identify the impact of disinfection with ClO2 on treated water quality, secondary effluent pretreated by coagulation was disinfected by ClO2, and the characteristic of dissolved organic matter (DOM) and the biological toxicity of the water before and after disinfection were investigated. The results showed that ClO2 could remove part of DOM and the removal rate of hydrophobic (HO) component b...
Autori: Lihua Cheng, Xuejun Bi, Aihua He, Changqing Liu, Qi Wang, Zuliang Liaohttp://www.ecozone.ro/reviste.php?RID=25692

Ecological adaptation of heavy metal polluted environments is significantly enhanced through plants inoculated with plant growth-promoting bacteria (PGPB), and the cost of phytostabilization in metal tailings can be reduced. On the basis of the systematic investigation of manganese tolerant plants which grew on Xiangtan manganese tailings, rhizosphere soils of th Chenopodium album Linn. were collected. One yellow manganese-resistant strain named XZL01 was isolated from the rhizosphere of fresh p...
Autori: Shengguo Xue, Yameng Ma, Xiaohua Zhou, Xiyan Zhou, Fenghao Liuhttp://www.ecozone.ro/reviste.php?RID=25696

The solubility and sorption behavior of naphthalene in the presence of dissolved organic acid was studied. The presence of dissolved organic acids at lower concentrations had only a little effect on naphthalene sorption. However, when the concentration exceeds a certain concentration, a significant inhibition was observed. Moreover, the inhibition enhanced with the increasing concentrations of dissolved organic acids. The change trend on solubility is similar to the sorption of naphthalene, that...
Autori: Jin hua Li, Bao xue Zhou, Qing Zheng, Wei min Caihttp://www.ecozone.ro/reviste.php?RID=25698

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

This study investigated the effectiveness of using anaerobic effluent as a nutrient supplement for cultivation of green algae Chlorella sp. Different concentration of 0%, 15%, 30%, 45%, 60%, 75%, 90% and 100% which were raw (group �r�) as well as autoclaved (group �a�) were applied to the anaerobic effluent and algae growth. They were compared in terms of growth rate and final algae biomass production. In the initial cultivation days, slower growth rates with an increased anaerobic efflu...
Autori: Yubi Chen, Renjie Dong, Gaojun Peng, Zhu Yi, Shuhao Huo, Yupeng Liu, Changle Panghttp://www.ecozone.ro/reviste.php?RID=25701

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

Fuel injection system, intake system and the geometric shape of combustion chamber are the three key factors to the fuel-air mixture and combustion process for diesel engine. long with the need of high power density in diesel engine, the pressure of intake is higher increasingly. Together with the effect of high pressure fuel injection, the fuel-air mixture and combustion process is hard to spread as usual. In this circumstance, the performance of power, heat efficiency and emission in diesel en...
Autori: Shang Yong, Liu Fu-Shui, Li Xiang-Ronghttp://www.ecozone.ro/reviste.php?RID=25704

With the enrollment scale of universities expanded because of the large population in China, the Chinese government gradually began to pay attention to green campus’ construction. In order to guide the water conservation construction and operation management for the national universities and colleges, it was proposed the water conservation construction and operation management technology system for green campus. The main contents include perfecting water conservation management systems, popula...
Autori: Hong Xiang Chai, Ying Hua Wei, Hai Yan Xu, Qiang Hehttp://www.ecozone.ro/reviste.php?RID=25705

Abstract:Drying wood requires a significant amount of thermal energy, in order to heat-up wood and evaporate the water inside it.Therefore, solutions to minimize this consumption are a topic of maximum interest for wood-processing industries. Employingsolar power for drying wood is not a novelty, considering that this possibility was already acknowledged at the end of the 17thcentury, but since then, kiln design was significantly improved, once with the progress of knowledge regarding the mechan...
Autori: Ion Marinescu, Mihaela Câmpean
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25727

The combination method of culture and PCR-DGGE technique is applied for a preliminary study of the diversity of the different contaminated soil. The bacteria DNA of the soil was extracted and used for PCR-DGGE analysis. The results show the plant height, total weight and florescence of two tested plant, inhibited by adding phenol or hexadecane in the soil. There are significant differences between test groups which add contaminants and control group, and no significant differences between test g...
Autori: Hai-Juan Ma, Guang-Ming Li, Ya-Lei Zhang, Ping Fanghttp://www.ecozone.ro/reviste.php?RID=25706

On the basis of spot investigation of dozens of cities and hundreds of towns and villages in different regions in China, combining with the fundamental methods of municipal solid waste management (MSWM), three development modes of MSWM were proposed according to the land area, economic level, nature condition and population distribution of various geographical units and urban systems. They were respectively for the city/district system, the city/town (district)/village system and the city/ count...
Autori: Haibin Chen, Li Zhang, Jingcheng Zhou, Yang Huhttp://www.ecozone.ro/reviste.php?RID=25707

Slag-Fly Ash Based cementitious material materials with high volume of fly ash and slag and less cement clinker was prepared, with low water requirement, well fluidity and with high strength, and can be used to the preparation of High Performance Concrete (HPC). When the W/C is 0.36, the 28d compressive strength is 58.93 Mpa, 28d flexural strength is 14.26 Mpa. By XRay diffraction analysis (XRD) and Scanning Electron Microscope (SEM) analysis, the results show that main materials in grinded samp...
Autori: Chenghong Fu, Wen Ni, Hui Wu, Mingyang Tianhttp://www.ecozone.ro/reviste.php?RID=25708

The beneficial effect of urban plants in improving air quality is often mentioned in literature but is seldom quantified and valuated. Quantification and valuation of the benefits provided by urban plants allow direct comparison between plant species and help make more informed urban planning decisions. Based on fieldwork study and data processing, carbon dioxide (CO2) sequestration, oxygen (O2) generation, transpiration cooling, sulfur dioxide (SO2) removal and dust interception are quantified ...
Autori: Qijiao Xie, Zhixiang Zhou, Fang Chenhttp://www.ecozone.ro/reviste.php?RID=25710

This paper presents a study of the numerical simulation applied for unsymmetrical dimethylhrazine (UDMH) gas dispersion. This study considers an assumed UDMH store conditions and provides important data regarding the relation between the concentration distribution of UDMH and dispersion distance from the source based on the computation fluid dynamic (CFD) software FLUENT. The simulation results show that the ventilation vent and distance of dispersion play an important role in the concentration ...
Autori: Zhiyong Huang, Guofeng Jin, Xuanjun Wanghttp://www.ecozone.ro/reviste.php?RID=25712

The permanent magnet EDS train has been considered to be one of the most promising urban transportation vehicles due to its particular characteristics: simple configurations, low energy consumption, low noise, and suitable for high speed conditions. In order to study the characteristics of permanent magnet Electrodynamic Suspension (EDS) system, an experimental mechanism was established in this paper. The optimization of Halbach magnet array has been carried out and appropriate track for the EDS...
Autori: Zhiqiang Long, Guang He, Ning He, Zhizhou Zhanghttp://www.ecozone.ro/reviste.php?RID=25713

Chemical composition data of coalbed produced water can provide information to determine the water sources, understand the evolution, select appropriate treatment processes and increase the utilization efficiency of water resources. Based on methods of hydrogeology, water chemistry and environmental chemistry, the characters of coalbed produced water in the Powder River Basin in the USA and Qinshui Basin in China have been analyzed. Conclusions have been drawn as follows: (1) The coalbed produce...
Autori: Guang Xu, Li Tong, Mei Yang, Yi-wen Juhttp://www.ecozone.ro/reviste.php?RID=25715

Semi-dry FGD with fabric filter has been extensively studied in recent years. After a series of industrial tests on 300MW boiler with semi-dry FGD and fabric filter, some operation notes were obtained. The test results show that CFB-FGD with fabric filter can be run longer and stable, and its actual performance is even higher than the design parameters. Moreover, the pressure drop of fabric filter after CFB-FGD is 600~800Pa (higher than normal). The fabric filter, which contributes to the desulf...
Autori: Tong Li, Han Yi, Han Xu, Reti Hai, Wang Wenxinghttp://www.ecozone.ro/reviste.php?RID=25716

Abstract:Under the circumstances of the deficit in total energetic resources of the Republic of Moldova, non-traditional sources as wind,solar and hydraulic energies are very opportune. Concurrently with the conventional energy resources (fossil fuels, atomic energyetc.), wind energy begins to regain its positions not only from ecological, but also from economical point of view. Also, the windenergy conversion systems could play a significant role in the production of mechanical, electrical ener...
Autori: Anatol Sochireanu, Ciupercă Rodion, Ion Bodnariuc, Ion Bostan, Ion Dicusară, Ion Sobor, Iulian Malcoci, Marin Guţu, Nicolae Trifan, Oleg Ciobanu, Radu Ciobanu, Radu Crudu, Valeriu Dulgheru, Viorel Bostan, Vitalie Gladîş
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25717

Abstract:In the current work design and mathematical description of thermal performance analysis of solar dryer for agricultural andmarine products is presented. Proposed solar dryer includes two main subunits: 1) Solar PV-Thermal dehydrator (heat transferfluid is air), which is used as heat source for dryer; 2) Drying cabin with multistage trays. The pilot unit of proposed systemdeveloped in Renewable Energy Department of Physics Faculty of University of Santiago de Compostela. Investigations o...
Autori: Angeles López Agüera, Daniel Rey Rey, E. Virites Montes, Iago Rodriguez Cabo, Jasurjon S. Akhatov, Vicente Gándara
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25719

Abstract:The textile industry uses high quantities of water which in many cases are disposed to the environment with inadequate treatment.In this work the effluents from the polyamide textile industry containing Bemacid Gelb, Bemacid Rot and Bemacid Blau weretreated by heterogeneous photodegradation. Treatment performances have been evaluated in terms of conductivity, turbidity, totaldissolved solids (TSD), chemical oxygen demand (COD), total organic carbon (TOC), biochemical oxygen demand (BOD5...
Autori: Luminita Andronic
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25720

Abstract:Point of zero charge (PZC) is defined as the condition at which the surface charge density of a material equals to zero and, formost of the solids it is strongly pH dependent. The PZC can be controlled by tuning the solid surface properties (crystallinestructure, morphology) and by a proper environment control, thus it is important to evaluate the PZC for a certain type of material,in given working conditions, for enhancing the efficiency in the targeted application (e.g. layer by layer...
Autori: Laura Maria Bertus, Radu Adrian Carcel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25721

Abstract:A method based on headspace and capillary gas chromatography with flame ionization detector technique was validated for thesimultaneous determination of five individual aromatic volatile pollutants: benzene, toluene, ethylbenzene, m/p-xylene and oxylene.The validation took in consideration liniarity, accuracy, precision, limit of detection, limit of quantification anduncertainty estimation criteria and concluded that the proposed method is suitable to determine the pollutants of interes...
Autori: Camelia Draghici, Elena Paunescu, Elisabeta Chirilă, Gabriela Stanciu, Simona Dobrinas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25729

Abstract:A specific topical issue both for small hydropower plants and wind turbines refers to the discrepancy between the relatively lowspeed of the water turbine/wind rotor and relatively high speed of the electric generator: the turbine/rotor has higher performancesat lower speeds, while the generator performances are increasing with the speed. Usually, this problem can be solved connecting aproper speed increaser between the turbine (increaser input) and generator (increaser output). Besides...
Autori: Codruta Jaliu, Oliver Climescu, Radu Saulescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25732

Abstract:The demand for new and high performance products in the automotive industry is increasing exponentially and this trend imposesinnovative concepts for cars. The future solutions for the automotive industry may find their answer in the fabricationtechnologies and also in alternative propulsion and energy production.The car design field cannot ignore the global economic crisis, imposing new approaches in terms of materials and cost effectivetechnologies and by the means of environmental pr...
Autori: Mihai Comşiţ
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25733

Abstract:In this paper the study on the possibilities of converting chopped reed stalk biomass into briquettes is described, in the conditions of harvesting water reed plant from Danube Delta region in winter time and based on briquetting technology used for wood waste from production. The water reed tested in the research has been harvested from Tulcea reed bed, one of the largest in Romania, chopped in a veneer drum chipper and compacted into the hydraulic briquette machine. The paper focuses ...
Autori: Aurel Lunguleasa, Camelia Coşereanu, Constantin - Radu Gheorghiu, Dumitru Lica, Gavril Budău
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25734

Abstract:In order to capture as much solar energy as possible, the photovoltaic converter has to follow the sun movement during a day; thiscan be achieved by a tracking system. Most tracking systems have complex and costly structures that can provide wide anglevariations. This paper presents a geared linkage that is build up by a planetary system of gears fitted on a linkage, and thus helpsin reaching wide angles. Starting from a patented linkage, which reaches ≈200° angular strokes, by a...
Autori: Dorin Diaconescu, Ioana Hermenean, Nora Creanga
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25736

Abstract:The European countries have few fossil fuel reserves and the main goal of the Lisbon strategy is to promote the utilization ofrenewable energy sources. In Hungary, because of the huge amount of thermal water reserves, geothermal energy might be one ofthe energy sources which can help to raise the share of renewables in the energy market of the country. Beside the positive aspectsthe use of thermal water for energy purposes have some important physical, environmental and economical aspec...
Autori: Ferenc Kalmár, Imre Csáki
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25738

Abstract:A comparative analysis is drawn on the energetic responses numerically simulated for Brasov, Romania location, delivered bytwo mono-axial pseudo-equatorial STCs (solar thermal collectors): a flat plate STC and a STC with heat pipes; the two systemsare destined for future implementation on Transilvania University Campus. Accordingly, two tracking programs are consideredfor the diurnal motion: a) of 1h constant duration steps, for school courses interval (September-June) and b) 1-step pro...
Autori: Maria M. Vatasescu, Veronica E. Dombi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25740

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:The drying of biological materials plays an important role in influencing energy savings, quality of end-products and alsoenvironmental issues. Several new approaches in application of solar dryers and a great number of biological materials have beendeveloped. In the paper the background of solar drying, current solar drying arrangements, and some of the recently focusedbiological products such as grain, fruit, vegetable etc. are selected and discussed. Additionally an integrated energy...
Autori: Istvan Farkas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25745

Abstract:The paper aims to present the new pattern of modular agriculture, as evolution of agri-food production in the coming decades aswell as to highlight the direct relation between this pattern and the massive energy support it requires.The paper basically deals with reactions to climate change, reductions of carbon emission, in addition to high quality and safetyrequirements for food production. The author envisages the PAC measures called for in order to ensure a sustainable developmentof ...
Autori: Romulus Gruia
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25746

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:For the optimal working of the concentrating photovoltaic systems (CPV), these are usually tracked, and the accuracy required infollowing the sun path is much higher than in non-concentrating system. The paper focuses on the synthesis of the optimal steptracking program of an azimuth tracking system, used for accurate tracking of a CPV system. The paper presents the synthesismodelling algorithm and the numerical simulations for a CPV system, orientated with an azimuth tracking system, i...
Autori: Ioana Sinziana Hermenean, Ion Visa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25748

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:It is of major importance that the mechanical structures and components of a photovoltaic (PV) system to have the same durabilityas the PV modules. The embodiment design process of the mechanical structure becomes significant as the results provide anoverall view of the PV system durability. The performance of the mechanical system must be attained based on functional andoperational requirements of the PV system. Therefore, the modelling and theoretical analysis of the mechanical behavi...
Autori: Bianca Butuc, Gheorghe Moldovean, Radu Velicu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25757

Abstract:The aim of this paper is to present an assessment of the importance of mobility in the context of lifelong learning in the field offuture human resources - students, in particular - in order to contribute to sustainable development. Developing, adapting andbroadening the range of skills of individuals to create and fill the jobs of the future are the most important contemporary Europeanaim. The process of improving workforce skills involves a mutual gain for both employers and companies...
Autori: Crina Radulescu, Madlena Nen, Radu Stoika
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25759

Abstract:Hydropower exploitation has become a multifaceted task due to continuously increasing interest in all parts of the world but alsodue to inhomogeneity of framework conditions in the social, the political, the regulatory and the economic view. The final successof a plant is not only ensured by a good technical concept or design but additionally by a suitably model of financing, by selectingthe most reliable partners, by evaluating the environmental restrictions or the political stability ...
Autori: Bernhard Pelikan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25761

Abstract:The increasing of energy consumption and fossil fuel emissions (especially CO2, SO2 and NOx) and the limitation of crude oilreserves, determined a growing trend toward renewable energy technologies, like solar, wind, geo-thermal energy and biomass forbiofuels.From all the renewable energies sources, biomass attracts more and more interest being a renewable resource with economicpotential, which can be found all over the world, with positive environmental properties due to neutral emissi...
Autori: Anca Sauciuc, Angela Potetz, Georg Schlaub, Gerald Weber, Hermann Hofbauer, Lucia Dumitrescu, Reinhard Rauch, Ziad Abosteif
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25762

Abstract:The state support programs on retrofitting buildings built with prefabricated technology has a decade-long history in Hungary.The launch of the Green Investment Scheme (GIS) in 2009 has introduced a new path: the performance-oriented approach. Thenew model is designed for implementing more complex renovations on a deeper level. The system is in accordance with theEPBD (EPBD, 2002) and exact savings must be quantified for all projects. The present paper outlines the past and the present ...
Autori: Attila Talamon, Tamás Csoknyai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25765

Abstract:The work presents the results in investigating the thermal behaviour of passive solar elements, for expanding the existing analysisand prediction methodologies. The interest focuses on solar control through natural shading with deciduous plants. This providesa natural path for incorporating all advantages the passive behaviour, available throughout the year. The simulation of thedynamic energy performance of building elements is developed, starting with a physical modelling of the vario...
Autori: Angelos D. Tzachanis
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25768

Abstract:In Romania, the small hydro power scheme (mini-, micro- and pico- hydro power) represents a potential renewable energy sourcefor electrical energy. Nevertheless, this small hydro potential must be used efficiently. The paper proposes an innovative e-methodof integrating design with manufacturing, for a small Pelton turbine. The first part presents the application of Rapid ProductDevelopment (RPD) with focus on Product Design (PD) of a new, very small customized hydropower turbine. This ...
Autori: Anisor Nedelcu, Bogdan Deaky, Razvan Udroiu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25769

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:The aim of this work is to obtain sintered porous membranes with graded structure for microfiltration by sedimentation andsintering of metallic powders. Our previous studies have demonstrated the possibility of obtaining sintered porous materials withgraded structure by sedimentation. In this paper, spherical nickel particles were used having a grain size in the 2-90 Âľm rangemeasured by the laser scattering particle size analyzer. The powders were sedimented into a sintering die in a s...
Autori: Gyorgy Thalmaier, Ioan Vida-Simiti, Nicolaie Jumate, Niculina Sechel, Valentin Moldovan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25775

Abstract:The study was conducted to evaluate the concentration variation of heavy metals in milk collected from two different groups ofsources: milk collecting centers and dairy farms. Also, their incidence in milk products, as pasteurized milk, butter milk, yogurt,cream, cheese, hard cheese was determined in the NE Romania (Moldavia).The analytical results revealed that the milk samples from the collecting centers had higher levels than the samples from the dairyfarms of Pb (2.90 to 3.45 vs. 1....
Autori: Andrei - Cristian Grădinaru, Gheorghe Solcan, Ovidiu Popescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25776

Abnstract:In recent years, solar receivers have been employed in several applications where high temperature fluids are involved, such aspower plants and solar thermal reactor. The possible presence of high temperature gradients could determine reduced receiverefficiency and a short life of the material. Thermal and fluid dynamic analysis of the receiver allows to highlight possible presenceof temperature gradients and to evaluate their values and the more critical zone of the material. Compress...
Autori: Alina Adriana Minea, Oronzio Manca, Salvatore Tamburrino, Sergio Nardini
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25779

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 present paper is concerned with the determination of the appropriate subsidy level for environmental friendly technologyvehicles. For this purpose, the economic calculation of the corresponding environmental benefit is necessary, which is realizedthrough the calculation of the negative environmental externality that could be avoided, if the examined subsidies have beenestablished. For the calculation of the latter, the EcoSenseLE tool has been applied here, using life-cycle airborne...
Autori: Dimitrios A. Georgakellos
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25782

Abstract:Surface exploitations in the limestone quarries have a major impact on the environment both by area and intensity. The valuationof the impact can be carried out through different means, one of them being the satellite remote sensing. In this article we analyzethe effects that limestone exploitations in the outskirts of BraÂ?ov city have on the landscape, using RGB combination, vegetationindices and spectrum profiles. A series of Landsat 5 TM satellite images taken in 1984, 1989 and 2009...
Autori: Iosif Vorovencii
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25784

Abstract:Bioremediation is considered as one of the prominent and cost-effective cleanup technology to treat oily sludge disposals. In the present investigation anaerobic bioremediation of petroleum based oily sludge was studied in a slurry reactor by applying different experimental strategies viz., bioaugmentation, biostimulation and co-substrate addition. Total petroleum hydrocarbons (TPH) present in the oily sludge before and after degradation was extracted using soxhlet extraction procedure....
Autori: Asha Juwarkar, Kuppam Chandrasekhar, Mamilla Prathima Devi, Motakatla Venkateswar Reddy, Ponnapalli Nageswara Sarma, Srinivasula Reddy Venkata Mohan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25794

Abstact:0.5 - 2.0% CuO-doped ZnO (CuO-ZnO) photocatalysts were prepared with a simple mixing method where the oxides wereinitially synthesized through precipitation. The physico-chemical properties of CuO-doped ZnO photocatalysts were studied viaXRD, TEM, XRF and BET method and their photoactivity was evaluated by degrading methyl orange (MO) dye. The propertiesof ZnO were not affected by the addition of CuO except for the particle size of the photocatalyst, which increased proportionallywith Cu...
Autori: Abdul Halim Abdullah, Md. Jelas Haron, Nor Zafirah Razali
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25785

Abstract:One of the basic conditions for the operation of nuclear installations is security operation. The complexity of the phenomena inheavy water detritiation plants, determine the use of advanced equipment for technological processes involved. Pilot Plant forTritium and Deuterium Separation developed the cryogenic technology of tritium separation from tritiated heavy water. Theprocess is based on an catalyzed isotopic exchange module, where the tritium is extracted from tritiated heavy water...
Autori: Sorin Gherghinescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25787

Abstract:In this study, removal of nitrate from aqueous solutions was investigated using an anion exchange resin, Purolite A-520E. Theinfluence of several experimental parameters, such as initial solution pH, resin dosage, phase contact time, initial concentration ofnitrate ions from aqueous solution, and temperature, has been examined in batch experiments. The results of this investigationreveal that the ion exchange process is favored at the initial solution pH (around) 6.8. The resin studied ...
Autori: Anca Ceica, Igor Creţescu, Ion Balasanian, Laura Bulgariu, Liliana Lazăr
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25788

Abstract:This study is focused on the influence of Co and Cu ions located in Zn/Ni/Al matrix on the structural, textural and catalyticproperties of layered double hydroxides (LDHs). The samples were prepared by co-precipitation (Ni2+/Co2+(Cu2+)=0.25;M2+/M3+=2)) at low super-saturation and afterwards characterized by XRD, nitrogen physisorption, thermogravimetry, FT-IR, DRUV-Vis and TPR. The XRD results show that the resulted solids are well crystallized and contain only pure phases of LDHs.Also,...
Autori: Adrian Ungureanu, Alexandru Chirieac, Brindusa Dragoi, Emil Dumitriu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25789

Abstract:Experimental research evaluated the possibilities of air treatment efficiency of a cylindrically shaped bio-charge, namely straw, toremove volatile organic compounds from the air. As determined during experiments, the air treatment efficiency of the straw biochargefor acetone removal reached 97.3%, while for butanol removal the efficiency was 86.0%. It has been determined that, withvolatile organic compound concentrations increasing biological air treatment efficiency is decreasing as h...
Autori: Alvydas Zagorskis, Petras Vaitiekunas, Pranas Baltrenas, Raimondas Leopoldas Idzelis,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25790

Abstract:There is a growing concern that the Earth’s atmospheric composition is being altered by human activities which can lead toclimate change. Policy measures to reduce carbon dioxide emissions are on the agenda of the International Maritime Organization(IMO) and the European Union (EU). Climate Change is an environmental problem and answers have to be sought among robustenvironmental policies that are often classified in market-based, command-and-control and voluntary instruments. Althoug...
Autori: Christos A. Kontovas, Harilaos N. Psaraftis
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25792

Abstract:Titanium metal and its alloys have been widely used as implants under load-bearing conditions due to their biocompatibility, excellent corrosion resistance and lightness, but their inability to bond to living bone is a setback. The experiments outlined here investigated hydroxyapatite (HA) coating on Ti metal implants, used to enhance their bioactive properties. In this study, specimens of commercially pure titanium (c.p. Ti) and Ti-6Al-4V were etched in either H3PO4 or HCl, and subsequ...
Autori: Chao-Lun Fu, Hsueh-Chuan Hsu, Shih-Ching Wu, Shih-Kuang Hsu, Wen-Fu Ho
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25795

Abstract:Recovery of residual ammonium nitrogen (NH4+-N) from dissolved air flotation (DAF) pretreated poultry slaughterhouse wastewater was studied by means of magnesium ammonium phosphate hexahydrate (MgNH4PO4.6H2O, MAP) precipitation in a lab-scale batch study. The maximum recovery values were obtained as 80.2%, 97.1% and 53.6% with the addition of MgCl2.6H2O + KH2PO4, NaH2PO4.2H2O + MgSO4.7H2O, and MgOHCO3 + 85% H3PO4 at pH 9.5, respectively. Based on the physicochemical findings, subsequent...
Autori: Aylin Gunay, Idil Ozis, Ilter Turkdogan-Aydinol, Kaan Yetilmezsoy
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25797

Abstract:The paper describes some studies on the influence of water flow rates through water-supply networks on drinking water quality. Water residence time in pipelines for more than seven days in buried pipes and two days in above-ground pipes promotes the development of biochemical systems when the flow rates are low and very low having detrimental consequences on drinking water quality. These shortcomings are due to the residual chlorine decrease below the allowed technical limits (0.5 m/s) ...
Autori: Adrian Carabeţ, Alina Gîrbaciu, Constantin Florescu, Cristian Stăniloiu, Ion Mirel, Irina Olaru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25799

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:This paper evaluates the efficiency of some technical depollution actions applied on a Northern Romanian landfill of solid municipal wastes, that provides ca 128 000 inhabitants and 171 economic companies, considering a great variety of specific physicochemical quality indicators for soil (8 indicators) and ground waters (34 indicators). The environmental status of the landfill was previously studied in 2004, through periodic analytical control of ground water (4 observation drilling we...
Autori: Carmen Zaharia, Daniela Suteu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25803

Abstract:Alkaline protease from Conidiobolus coronatus which is optimally active at pH 10 and 40°C finds application in leather and detergent industries as well as for recovery of silver from waste photographic films. The protease was immobilized in Ca-alginate, polyacrylamide gel and alkali treated waste fungal biomass (ATWFB). ATWFB was found to be most suitable among the matrices tested. Glutaraldehyde marginally increased the binding to ATWFB. Binding of protease to ATWFB seems to be through...
Autori: Ryali Seeta Laxman, Shiv Shankar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25807

Abstract:The effect of organic carbon loadings (OCLs) on NH4+-N and Mn2+ removal was investigated using a novel approach of biological aerated filter (BAF) for drinking water treatment system. Three different OCLs of 0.2, 0.5 and 1.0 kg COD/m3.d were loaded into BAF which was operated in batch-wise at 24 h hydraulic retention time. The experiments resulted in higher COD, NH4+-N and Mn2+ removal percentages at OCL of 1.0 kg COD/m3.d with removal of 97.1%, 97.4% and 94.7%, respectively. The +-N ef...
Autori: Hassimi Abu Hasan, Noorhisham Tan Kofli, Siti Kartom Kamarudin, Siti Rozaimah Sheikh Abdullah
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25808

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

Abstract:Drinking water produced in water treatment plants almost invariably fulfils the water quality requirements set, for example by the European Union Drinking Water Directive 98/83/EC (EU DWD) and national legislation. However, EU DWD requires that water quality should also meet the requirements at the consumers’ tap. The quality of drinking water changes due to the transportation through the distribution networks and the time spent in the reservoirs until the last point of consumption. W...
Autori: , Ioana Gabriela Dascalescu, Maria Cohl
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25814

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

Understanding the influence of environmental factors and human activities on fire occurrence in rural areas is of considerable interest in order to facilitate effective prevention strategies. The newly named Natural Area of Sierra Nevada (both a National and Natural Park) is one of the larger areas of environmental and tourism interest in Spain and includes, among other areas, much of Granada Alpujarra and Almer?­a Alpujarra and the outskirts of the principal ski resort. These areas receive each...
Autori: Esteban Navarrete-Álvarez, José-Manuel Quesada-Rubio, María-Dolores Huete-Morales, ,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25822

Given the scenario of conflicting evidence found in previous literature with respect to the best Theory to explain the relationship between Environmental Disclosure and Environmental Performance, in this study we have tested Legitimacy Theory by using a time series structure for DJS Europe Index and controlling for the kind of industry. We have used Panel Data Methodology to eliminate the individual heterogeneity and Generalized Method of Moments (GMM) to control for problems of endogeneity by u...
Autori: Esteban Pérez-Calderón, Patricia Milanés-Montero
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25825

This paper links two theoretical constructs underpinned by sustainable values, management of sustainable development and ecoinnovation. The first one becomes a crucial process and adds competitive value and, the second, plays a pivotal role in the search for a sustainable economy and society. This research is an attempt to explore the Spanish companies´ attitude towards sustainability when innovating. Industries were categorized as to their actual technological performance status as low, medium...
Autori: Ángel Peiró-Signes, Luis Miret-Pastor, María-del-Val Segarra-Ońa, Rohit Verma
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25826

Agrotourism, a form of tourism that falls within the framework of rural tourism, is based on the tourism taking place on farms with the possibility of doing work with the owners of the farm with this being seen as a leisure activity, educational in nature and of interest to members of many groups. The importance of this kind of tourism resides in the possibility of complementing the income generated from the farm with income produced by the tourism, as well as assuring the conservation of the en...
Autori: Ana-María Campón-Cerro, Antonio Pérez-Díaz, Felipe Leco-Berrocal, José-Manuel Hernández-Mogollón
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25828

An iron(Fe+3) oxide/hydroxide nanoparticles-based agglomerates (AggFe) suspension adsorbent was synthesized for efficient, cost-effective phosphate removal. A strong effect of AggFe concentration and pH level of water containing phosphate on removal efficiency was shown. It was found that phosphate adsorption onto the AggFe suspension may be described by pseudo-secondorder reaction kinetics and the Langmuir isotherm model. The unique adsorption properties of synthesized AggFe adsorbent are demon...
Autori: Grigori Zelmanov, Raphael Semiat
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25829

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 corrosion products of high strength low-alloyed steel and of cast iron, maintained a prolonged period in natural seawater, were analyzed. A part of the corrosion products are soluble compounds of divalent and trivalent iron, the iron dissolution being accelerated when divalent ions are formed and in the case of the aerated seawater. The solid corrosion product formed during corrosion in seawater is principally oxy-hydroxide (FeOOH), but were identified small quantities of Fe2O3, Fe3O4 and so...
Autori: Daniel Mareci, Maria Lungu, Nicanor Cimpoeşu, Nicolae Aelenei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25832

This paper refers to the post-Darcy free level uniform filtration. The capillary tube fascicle model is applied to this filtration. The theoretical Ch?Šzy coefficient is computed and also experimentally verified for a homogenous and isotropic material, made of glass spheres. The typical features for the free-level post-Darcy filtration (depending on slope) are the lover, critical and higher stages flows....
Autori: Aron Gabor Molnar, Daniel Toacă, Daniel Toma, Iosif Bartha, Nicolae Marcoie, Victor Gabor
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25833

This paper presents a study on the integration of two advanced treatment processes for the removal of priority organic processes from wastewaters: catalytic oxidation (Fenton homogenous process) followed by ultrafiltration. The aim of this study was to assess the removal efficiency for 4-chlorophenol (used as model pollutant), as well as the decrease in effluent toxicity in various processes conditions. The experiments have mainly focused on studying the effect of the oxidant dose of the catalyt...
Autori: , Cezar Catrinescu, Corina Petronela Musteret, Daniela Arsene, George Barjoveanu, Petru Apopei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25834

Increased intensity of precipitation events in a future climate provide result in a number of regions with improved, more detailed models. Many mathematical models include this part of hydrological cycle with implications regarding the climatic changes. The case study shows aspects regarding the climatic changes and its impact on designing the hydraulic structures and the hydrotechnical constructions behaviour in the case of extreme hydro-meteorological phenomena....
Autori: Catrinel-Raluca Giurma-Handley, Ioan Crăciun, Ion Giurma, , Valentin Boboc
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25836

Abstract:The concept of sustainable development has become an important objective for policy makers, since the key principle ofsustainable development understands the interdependence between economy, environment and society concerns.The objective of this study is to analyze the supports for sustainable environmental remediation, considering sustainabilityindicators and sustainable remediation practices, based on both methods that are known for a long time as well as emergentprocesses and technol...
Autori: Isabela Maria Simion, Maria Emiliana Fortuna, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25837

� SUSTAINABILITY IN ENVIRONMENTAL REMEDIATION � EVALUATING THE CLIMATIC CHANGES IN THE HYDROLOGICAL FLOW REGIME OF THE MOLDAVIAN AREAS � ENSURING ECONOMICAL AND FINANCIAL SUSTAINABILITY: STATE FISCAL CONTROL - A WAY TO PREVENT AND REDUCE TAX AVOIDANCE � COMBINED OXIDATION AND ULTRAFILTRATION PROCESSES FOR THE REMOVAL OF PRIORITY ORGANIC POLLUTANTS FROM WASTEWATERS � THE FREE LEVEL UNIFORM POST-DARCY FILTRATION THROUGH A SPHERE-MADE HOMOGENOUS MEDIUM � HSLA ST...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25838

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

Polycyclic aromatic hydrocarbons (PAHs) are by-products of petrol transformation; a report prepared by ICON, London, United Kingdom in 2001, showed that the principal sources of polycyclic aromatic hydrocarbons in wastewater are domestic usage, storm runoff and commercial effluent. This work presents the results on 14 commonly occurring and/or highly carcinogenic PAH compounds listed as priority pollutants by the United States Environmental Protection Agency and the European Union. Wastewater sa...
Autori: Dumitru Ristoiu, Edward Muntean, Livia Alhafez, Nicoleta Muntean, Radu Mihaiescu, Tania Mihaiescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25847

The International Conference on Environmental Engineering and Management, ICEEM 2011, at its 6th Edition, represents a scientific event that is dedicated to the promotion and dissemination of the scientific results obtained at national and international level in the fields of environmental engineering, environmental management and sustainability. The event was initiated and organized every 2 years, since 2002, by the Department of Environmental Engineering and Management, Faculty of Chemical Eng...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25846

The removal of Cr (VI) from aqueous solutions by sphagnum peat moss was investigated in batch experiments as a function of solution pH and initial Cr (VI) concentration. The highest removal percentage (R=99%) was obtained at pH = 1, in solutions of 20.8 mg Cr (VI)/L. In order to establish the mechanism of the removal process, Cr (VI) and total Cr (Cr (VI) + Cr (III)) in residual solutions was analyzed. The Cr (VI) removal by the peat moss at low pH is governed by two processes – electrostatic ...
Autori: Catalin Balan, Doina Bilba, Irina Volf, Matei Macoveanu, Petru Bulai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25849

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

Equilibrium and kinetics of nitrate removal from aqueous solutions of pH = 6.8 were investigated using the strong base anion exchange resin (Purolite A-520E) in the batch method. The experimental equilibrium data were analyzed by means of the Langmuir, Freundlich and Dubinin-Radushkevich sorption isotherm models. The Langmuir model describes sorption isotherm of nitrates with high correlation coefficients and better than Dubinin-Radushkevich and Freundlich models. The effect of temperature on th...
Autori: Anca Ceica, Igor Creţescu, Ion Balasanian, Laura Bulgariu, Liliana Lazăr
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25851

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

Biomass is a very interesting natural source to obtain renewable energy as well as chemical products based on a renewable feedstock. Fuel produced from renewable resources is widely regarded as an option to substitute traditional fossil fuels and thus to answer to the adjunct climate debate. For the production of chemical substances from renewable substrates many process options are in investigation worldwide at the moment. However the ecological benefits of these technological options have to b...
Autori: Anton Friedl
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25856

Infrasound is a sound wave with a range of frequencies below that of human hearing and is a constituent of the environment in which we live. Taking into consideration that infrasound is below the audible range and that its overall effects on the entire human organism are yet unknown, the ambiguity of the phenomenon requires further research. Although infrasound has been analyzed in depth in the past few decades and assumptions have been made regarding experiments on human subjects (with or witho...
Autori: Carmen Cătălina Ioan, Cornelia Ursu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25859

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 aquatic species are permanently subjected to various stresses through the ecosystem and the food habit. Elucidating the impact at the cellular level allows us to understand the ways in which the polluting elements and their derivatives can disrupt the metabolism of aquatic organisms triggering apoptosis in individual cells or necrosis affecting groups of neighbouring cells. The aim of this preliminary study is to highlight the influence of the environmental factors on two fish population by ...
Autori: , Camelia Ureche, Dorel Ureche, Gabriel Lazar, Ileana Denisa Nistor, Irina Loredana Ifrim, Iuliana Mihaela Lazar, Marius Stamate, Valentin Nedeff
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25861

Marine species (n=36) available in a supermarket of Cluj-Napoca city, Romania were collected and analyzed for the levels of heavy metals (Cr, Cu, Zn, Cd, Pb, Hg) and As, polychlorinated biphenyls (PCBs), and organochlorine pesticides (OCPs), such as dichlorodiphenyltrichloroethane (DDT) and analogous, hexachlorocyclohexanes (HCHs) and hexachlorobenzene (HCB). The collection included samples from twelve fish groups (sardine, tuna, herring, pangasius, marbled rockcod, hake, shrimp, pink shrimp, lo...
Autori: Adriana Gog, Claudiu Tanaselia, Ioan Ştefan Groza, Marin Senila, Mirela Miclean, Oana Cadar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25863

This paper presents a new photo-Fenton procedure applied in oxidative degradation of organic pollutants using 4-chlorophenol (4-CP) as low biodegradable testing compound. The homogeneous photo-Fenton process was modified by using a photo-catalytic reactor equipped with a steel wire mesh which acts as source for Fe2+ catalyst generation into reaction medium and as heterogeneous catalyst, by iron oxy-hydroxyl compounds formation on the surface. The oxidation process was evaluated by measuring the ...
Autori: Adina-Elena Segneanu, Cristina Orbeci, Ion Untea, Mihaela Emanuela Craciun, Rodica Stanescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25864

Chromium and cadmium are heavy metals that occur naturally in the environment and especially in soils. Their toxic effect is more pronounced at high concentrations and it depends on the oxidation states. While Cr (III) is considered an essential trace element for the metabolism of living organisms, Cr (VI) has a higher mobility and is easily soluble in soils and can be leached into surface water or groundwater, and taken up by plants. That leads to a toxic and carcinogenic effect to humans via i...
Autori: Dumitru Bulgariu, Florian Statescu, Maria Gavrilescu, Mariana Diaconu, Vasile Lucian Pavel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25866

The most important argument of this experiment was to demonstrate an increased content of active principles under the influence of some substances (considered in the literature as mutagene), when used in low concentration, do not affect the environment. The purpose of this study was the selection of some treatment variants, which, during the experimentations show the same biosynthetic potential, stabilized or increased. The substances used in the experiment were ethidium bromide at the concentra...
Autori: Constantin Leonte, Marius Zaharia, Roxana Vatavu, Teodor Robu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25867

Among the different types of waste products tested, the bark of different Pinus species have been identified as a promising class of low- cost sorbents for heavy metal binding. In this context, the potential of Romanian pine bark wastes as green and economical sorbent for cadmium (II) ions removal from aqueous solutions has been tested in batch conditions as function of initial pH, contact time, sorbent dose, metal ion concentration and temperature. The equilibrium data at three different temper...
Autori: Anca Miron, Brindusa Robu, Carmen Paduraru, Lavinia Tofan, Roxana Laura Mihailescu Amalinei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25871

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

The indoor climate of educational institutions (kindergartens, secondary schools and universities) in Estonia is investigated. The main hazards for students’ health are: the high concentration (over 800 ppm) of carbon dioxide in the classrooms that refers to the inappropriate ventilation; the non-ergonomic computer workplaces where the direction of the natural light (without blinds for the windows) is causing glare on the monitors; the low humidity of the air in winter; the low air temperature...
Autori: Ada Traumann, Piia Tint, Viiu Tuulik
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25873

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

Measurements of radium concentrations in water are important from the health protection point of view, so simple and reliable analytical methods must be available. In this paper we have determined the radium activity concentration in 24 spring waters which are used as potable water reservoirs. For this purpose we used radon emanation technique and also alpha spectrometry method. This work gives details of sample processing, Lucas cell and the methodology used in the emanation method. In the meas...
Autori: Alida Timar Gabor, Constantin Cosma, Oana Alexandra Rusu, Robert Csaba Begy, Simina Dreve
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25878

Nowadays, advanced wastewater treatment has become a stringent step for the removal of priority organic pollutants and many technologies have been proposed in order to achieve effluents with a superior quality for recycling or reuse purposes. This research is focused on the possibilities of using an integrated process, comprising 2 stages: the advanced oxidation process of ultrasonication and a membrane separation process, ultrafiltration. The main objective of the study is to assess the efficie...
Autori: , Daniela Cailean
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25880

In this paper, Cadmium and Zinc removal from soil by phytoremediation was investigated. The experiments were carried out with two types of plants, Brassica napus and Triticales sp. Response surface modeling and optimization of Cd and Zn removal rate was performed for each type of plant under controlled conditions, i.e. as a function of Cd concentration, Zn concentration and pH. Although the maximum heavy metal uptake (i.e. 2.4 % Cd removal rate and 1.80 % Zn removal rate, respectively) was obtai...
Autori: Corneliu Pohontu, Gabriela Soreanu, Igor Creţescu, Matei Macoveanu, Paula Caraiman Cojocaru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25881

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

The paper proposes a method and a technology that allows the generation of a very high intensity magnetic field, at a high pressure and within an extremely short period of time into a ferrous material, in order to study the behavior of such material from the magnetic and structural perspective. The method consists in producing the �compression� of an initial magnetic flux that is generated in a coil that has inside a ferrous material cylinder (the armature), subject to testing, done by a con...
Autori: Nicolae Badara, Octavian Tarabuta, Vasile Dobref
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25887

The Landra Wastewater Treatment Expert System is developed by the University of Pannonia (Hungary, Veszpr?Šm). The flexible, simulation-based software provides the possibility to choose the built-in mathematical models or the user may create a new one arbitrarily. A customized program codes can be created according to the technological description, the input data and the control strategy provided by the user. This way the efficiency and reliability of the system is significantly enhanced. An imp...
Autori: , Endre Domokos, Tatiana Yuzhakova, Viola Somogyi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25888

The herbicide use can be seen as an auxiliary path for new farming methods, providing more advantageous farming and land use capabilities and increasing crop yields. Some of them are quickly degraded but others persist in the environmental compartments being toxic for human health and the environment.The aim of this study was to evaluate the impact of some triazine herbicides from agricultural sources on quality of well and surface water, in two regions of Romania with different agricultural act...
Autori: Andreea Dragus, Mihail Simion Beldean-Galea, Radu Mihaiescu, Tania Mihaiescu, Dumitru Ristoiu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25889

This paper describes the scientific framework established within doctoral and postdoctoral programs designed to contribute to a thorough understanding of the specific processes involved in environmental engineering and protection, as to improve the environmental management and performance in an efficient and sustainable way. A coherent conceptual framework is developed for the analysis and management of some specific approaches in engineering and environmental protection (pollution phenomena, de...
Autori: Cristina Ghinea, Daniela Tudorache Fertu, Isabela Maria Simion, Laura Carmen Apostol, Mădălina Petraru, Maria Emiliana Fortuna, Maria Gavrilescu, Petronela Cozma, Raluca Maria Hlihor
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25891

Wireless local area networks (WLAN) are an increasingly used communication technology employing energy of radiofrequency (RF). Although the power emitted by WLAN systems is relatively small (in Europe, a maximum of 100 mW is permitted in the classic 2.4 GHz frequency band), concerns about possible health effects risks from exposure to radiofrequency (RF) fields originating on WLAN are sometimes expressed by the general public. In such a context, this paper presents results of a survey conducted ...
Autori: Alexandra Salceanu, Eduard Lunca, Igor Creţescu, Valeriu David
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25896

The approached subject presents some features of a methodology for original research, considering the environmental performance as a component of the organizations management performance quantification, by considering the environmental management approach as an integrated environmental informational and decisional concept. The current trend in the assessment of performance management is the integration of the environmental management in the organizations management in a conscious and regulated w...
Autori: Mihaela Luminita Lupu, Nicolae Trofin, Orest Trofin
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25897

Since the last century, as a consequence of advanced industrialization, the remarkable growth of population, and its mobility have turned the field of transport into the main factor responsible for air pollution attributable to mobile sources of pollution. The continuous accumulation of various pollutants in the environment determines severe consequences on humans, animals and plants, buildings, works of art and landscape. Road transport represents, through its characteristic features – high f...
Autori: Gabriela Mitran, Ion Tabacu, Sorin Ilie, Viorel Nicolae
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25898

Five new aryloxyalkylcarboxylic acid derivatives (diazoaminoderivatives) are studied for their thermal behavior by applying a coupled TG-FTIR technique over the (30-400 oC) range in correlation with the environmental impact of gaseous species resulting by thermal degradation. These compounds are of a particular practical significance since they show a high biological potential as agrochemicals, such as pesticides (herbicides, acaricides, fungicides, growing stimulators etc.). This is why the pap...
Autori: Anca Mihaela Mocanu, Carmen Zaharia, Constantin Iordache, Constantin Luca, Lucia Odochian
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25899

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

The presence of pollutants in food raises some serious questions concerning their potential impact on consumers health, being necessary to monitor their distribution in the environment. The present work provides data regarding levels of organochlorine pesticides (lindane, p,p’- DDT, p,p’- DDE, p,p’- DDD, HCB, aldrin, dieldrin, endrin and hepthaclor) and PAHs: acenaphthene (Ace), acenaphthylene (Acy), fluorene (F), naphthalene (Np), anthracene (An), fluoranthene (Fl), phenanthrene (Ph), ben...
Autori: Alina Soceanu, Danut Tiberius Epure, Gabriela Stanciu, Simona Dobrinas, Viorica Popescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25905

Abstract Effects of the aeration rate on nutrient removal from synthetic domestic wastewater using an intermittently aerated sequencing batch reactor (IASBR) were studied at ambient temperature. Two aeration rates, 0.8 and 1 L air/min, were studied. At the aeration-rate of 0.8 L air/min, removals of COD, NH4+-N, total nitrogen (TN) and PO43--P were 84%, 96%, 75% and 99%, respectively. At the aeration rate of 1 L air/min, removals of COD, NH4+-N, TN and PO43--P were 90%, 99%, 70% and 66%, re...
Autori: Liam G. Henry, Liwen Xiao, Xinmin Zhan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25941

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

AbstractIn this study, a novel excess activated sludge (EAS) based nitrification and denitrification process was developed using EAS toprovide nitrifiers and denitrifers for nitrogen removal from the reject water of a municipal wastewater treatment plant (MWWTP).This can achieve a significant reduction in the nitrogen (N) loading in wastewater treatment plants. The results show that theammoniacal-nitrogen (NH4+-N) and total nitrogen (TN) removal efficiencies were in the range from 74.7% to 93.1%...
Autori: Wei Li, Xiaoxia Yang, Xinchao Guo, Yongzhe Yang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25946

AbstractPartial nitrification for the biological nitrogen removal (BNR) via nitrite has recently gained interest for treating high-strengthammonium wastewater with low organic matter content. However, stability of partial nitrification is still a challenge in activatedsludge system. In the present study, the technique of aerobic granulation was developed to produce granules for stable nitritation,treating ammonia-rich inorganic influent with 400 mg NH4+-N/L. The morphology, physical properties, ...
Autori: An-Jie Li, Xiang-Chun Quan, Xiao-Yan Li, Zhi-Feng Yang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25947

AbstractIn this study, palygorskite clay calcinated at different temperatures from 200 to 900 °C was used as adsorbent to removephosphate from aqueous solutions. The crystal structure and the surface property of the thermally modified material wasinvestigated to determinate the relationship between the adsorption capacity of the adsorbent and the changes of the crystalstructure and surface property. The results indicate that palygorskite clay calcinated at 700 °C had the highest adsorptioncapaci...
Autori: Chengsong Qing, Chengzhu Zhu, Dong Chen, Jiayuan Wang, Jingjing Xie, Tianhuhu Chen, Xinmin Zhan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25949

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

AbstractThis paper reports the effects of COD:sulfate ratio on sulfate removal and electricity generation from oil shale retort watertreatment using microbial fuel cells (MFCs). Field-collected retort water was augmented with organics to obtain a range of initialCOD:SO42- ratios (0.5:1 to 2:1), and treated in two different MFC designs (tubular and two-chambered). The two-chamberedMFCs exhibited COD and sulfate removal 1 to 2 orders of magnitude higher than those of the tubular MFCs. The tubular ...
Autori: Ho Il Park, Lian-Shin Lin
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25954

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

AbstractDue to rapid growth in both population and economic development in China, water demand is increasing dramatically andChina is facing more and more severe water scarcity problems. Thus competitions for water (between uses, users and regions) areincreasing which make water use efficiency an important issue in China, together with the uneven spatial and temporaldistribution of water, all of which drive the Chinese government and water planners to find the optimal water resource allocationpl...
Autori: Adrian T. McDonald, Linda See, Martin Clarke, Yanan Jiang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25961

AbstractBased on the field survey, this paper analyzes the relationship between groundwater and ecological environment in arid andsemiarid areas in northwest China. Groundwater in the arid and semiarid areas is a natural resource with economic and ecologicalvalues. The concept of the ecological value of groundwater is firstly presented. This ecological value can be reflected in fouraspects: (1) the maintenance of base flow in rivers and areas of lakes and wetland; (2) the supply of physiological...
Autori: Donghui Cheng, Jinling Kong, Lei Duan, Wenke Wang, Zeyuan Yang, Zhoufeng Wang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25962

AbstractA rapid increase of wastewater treatment plants (WWTPs) has made the disposal of excess sludge from WWTPs a seriousproblem. In order to enhance the management of sludge, both development of sludge reduction technologies and sludgeevaluation system are of great importance. Based on the survey data from 696 plants in China in 2009, an empirical model wasdeveloped to simulate the production and discharge of excess sludge, which considered influent, temperature, Chemical OxygenDemand (COD), ...
Autori: Chengwen Wang, Tao Xie
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25963

A fast economic development in China over thelast three decades has lifted hundreds of millions ofpeople out of poverty. However, an annual GDPincrease of over 10% due to the large scale industrialactivities and fast urbanization has released substantialamounts of pollutants into the environment and exertedtremendous pressure on local ecosystems. Although alarge amount of investment has been made by theChinese government and a series of efforts have beenmade by the environmental regulators, scie...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25965

AbstractPolyvinyl alcohol (PVA) is a typical refractory organic pollutant with low biodegradability and high molecular weight. Thispaper presents data on the radiolysis of PVA in aqueous solutions by using ionizing radiation. Response surface methodologywith Box-Benhken design of experiment was applied to analyze the interactions among initial concentration of PVA, absorbeddose, and initial pH of aqueous solutions on PVA removal efficiency. 9.4-89.4% PVA was removed based on differentcombination...
Autori: Jianlong Wang, Jinping Tian, Lujun Chen, Shijun He, Weihua Sun
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25967

“The Exploratory Workshop „Progress inEnvironmental Engineering, Biotechnology andManagement in The Frame of Knowledge-BasedSustainable Economy” took place in the contextwhen worldwide research shows that the currentindustrial system supports a population that useresources and generates waste, consuming the Earth'ssupply, but who’s biocapacity is far outweighed bythe increased demand of products for a developmentsystem that often works on unsustainable bases.Today’s challenge is the integration ...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25969

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

AbstractNumerous governments have adopted innovative policy instruments to deal with important environmental policy challenges.Various forms of negotiated instruments may offer the potential to improve on environmental performance beyond whatregulation alone can accomplish. Dutch covenants, which represent negotiated agreements with sectors of industry as targets ofbehavioral change in terms of mitigation of pollution, waste minimization and sustainable products and processes, provide auseful sa...
Autori: , Kris Lulofs, Laura Franco, Theo de Bruijn, Yanyan Xue
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25972

AbstractThe preliminary assessment of a cost-effective flow-sheet for the production of biodiesel from microalgae lipid fraction wascarried out. The study was based on approximated cost-estimation methods integrated with the simulation software Aspen PlusŽ.Several scenarios were investigated to compare costs regarding the main steps of the biodiesel production process. Ranges ofinput variables from downstream literature and experimental data were used to simulate the sections that define concret...
Autori: Antonio Marzocchella, Giuseppe Olivieri, Piero Salatino, Teresa Guida
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25973

AbstractThe transport of gases and solvents in polymeric membranes is an important phenomenon with many technical applications, suchas the mixture separation using polymeric membranes, the polymeric membrane preparation, the polymer devolatilization and theselection of appropriate polymeric membranes for a certain process. In most membrane separation operations and manufacturing,equilibrium and diffusion data are required.Useful information on equilibrium and diffusion can be obtained from the s...
Autori: Ciprian Constantin Negoescu, Eugenia Teodora Iacob Tudose, Ioan Mămăligă, Nicoleta Bunduc
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25975

AbstractThe huge emission of greenhouse gases from fossil-fuelled power plants is emphasizing the need for efficient Carbon Captureand Storage (CCS) technologies. The biomimetic CO2 absorption in aqueous solutions has been recently investigated as apromising innovative alternative for post-combustion CCS. The carbonic anhydrase (CA) - a broad group of ubiquitous enzymes– may catalyse the CO2 hydration reaction and then to promote CO2 absorption rate into aqueous solutions. Nevertheless theresear...
Autori: Antonio Marzocchella, Giuseppe Olivieri, Maria Elena Russo, Piero Salatino
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25976

AbstractIn this paper integrated network of continuous reactors for the decontamination of gaseous flows in heterogeneouscatalytic gas-liquid-solid – also applicable for bioremediation systems is investigated. For this purpose, duringprocess integration we have identified strategies to develop an optimal system for a variety of well-definedrequirements and to discover ways to ensure cost efficiency to achieve the requirements of sustainable industry in theframe of knowledge-based sustainable eco...
Autori: Maria Gavrilescu, Oana Marlena Penciu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25977

AbstractSince contemporary economical development trends are not sustainable, and given the fact that public involvement, educationand training are key to a society that aims toward sustainability, it is obvious that the role of education is to trigger and developchanges in the individual’s values system, behavioral patterns, skills, and attitudes. Providing benchmarks in establishing ageneral framework on education for sustainable development represents a key feature, thus making it possible to...
Autori: Carmen Cătălina Ioan, Maria Ileana Carcea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25979

AbstractThe WINGEMS software is a useful tool in analyzing, mathematical modeling and synthesis of chemical processes. Thissoftware can be applied to simulate various stages of the papermaking process. An example of simulation and modeling ofprocess is presented for paper stock preparation line for papermaking. On the basis of data obtained during process analysis, it ispossible to elaborate a strategy for control and monitoring of technological parameters and, while the efficiency of the proces...
Autori: Corina Măluțan, Theodor Măluţan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25981

AbstractMethane landfill emissions are a general concern and should be estimated for taking the proper measures for global warmingmitigation. The European legislation is supporting all techniques that avoid, reduce or treat CH4 emissions. One of the maindirections is reducing the quantities of biodegradable waste disposed in landfills. The efforts for GHG emissions reduction andalso compliance with European legislation in the field of waste management does not mean only putting in place some sta...
Autori: Liliana Bobirica, Rodica Stanescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25984

AbstractThe waste management is increasingly important from the point of view of our future and to keep our environment safe for thefuture generations to come. The European Union sets up strategic objectives and goals on priorities and actions in the field ofwaste management. The Waste Framework Directive 2008/98/EC stipulates and sets forth the goals and actions for the nextdecades. The paper deals with the European strategy and the Hungarian practices with special focus on the North-Balatoncom...
Autori: Ákos Rédey, Attila Sarkady, László Dióssy, Róbert Kurdi, Tatiana Yuzhakova
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25986