|
Rezultatele pentru free cellsRezultate gasite: 171
Environmental Engineering and Management Journal, Vol. 6 Nr. 2
Environmental Engineering and Management Journal › Vol. 6 › Nr. 2 Include urmatoarele articoleâ€? Degradation of alcian blue 8 gx by heterogeneous and homogeneous photocatalytic processesâ€? Evaluating the performance of solid waste management modelsâ€? Bioreactors with stirred bed of immobilized cells 1. Studies on mixing efficiencyâ€? Fugitive emissions estimation from petroleum storage tanksâ€? New Ni(II) coordination polymers with insulating and anticorrosive propertiesâ€? Determination of water quality deterioration at pilgrimage centre along river netrav... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25196
Hydrogen and sustainable energy. Research for hydrogen production
Environmental Engineering and Management Journal › Vol. 6 › Nr. 1 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
Bioreactors with stirred bed of immobilized cells 1. Studies on mixing efficiency
Environmental Engineering and Management Journal › Vol. 6 › Nr. 2 The models describing the flow or the heat and mass transfer in stirred bioreactors can be easily adapted for the continuous phase from the stirred bed bioreactors. But, for the immobilized biocatalyst phase, new models have to be established. Therefore, in this paper the influences of the main factors on mixing for a bioreactor with stirred bed of S. cerevisiae immobilized cells in alginate have been analyzed.. The mixing efficiency continuously increases with rotation speed acceleration for th... Autori: Anca-Irina Galaction, Anca-Marcela Lupasteanu, Dan Caşcaval ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25116
Zero discharge: technological progress towards eliminating pulp mill liquid effluent
Environmental Engineering and Management Journal › Vol. 6 › Nr. 5 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
Equilibrium isotherms studies for sorption of lead ions from aqueous solutions using Romanian peat sorbent
Environmental Engineering and Management Journal › Vol. 6 › Nr. 5 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
Environmental Engineering and Management Journal, Vol. 3 Nr. 4
Environmental Engineering and Management Journal › Vol. 3 › Nr. 4 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
Environmental Engineering and Management Journal, Vol. 4 Nr.3
Environmental Engineering and Management Journal › Vol. 4 › Nr. 3 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
Environmental Engineering and Management Journal, Vol. 4 Nr.4
Environmental Engineering and Management Journal › Vol. 4 › Nr. 4 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
Using GPS technology and distributed measurement system for air quality maping of rezidential area
Environmental Engineering and Management Journal › Vol. 6 › Nr. 6 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
Performance of traffic noise models for metropolitan cities
Environmental Engineering and Management Journal › Vol. 7 › Nr. 4 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
Microbial cellulose as support material for the immobilization of denitrifying bacteria
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 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
Investigations on the possibility of natural hemp fibers use for Zn(II) ions removal from wastewaters
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractNatural hemp fibers have been evaluated for Zn (II) ions sorption from diluted aqueous solutions. In order to establish the optimum conditions, the effect of initial pH of solution, hemp dose, Zn (II) concentration, temperature and contact time of phases on the Zn (II) sorption by natural hemp has been studied. To model the Zn (II) sorption at three different temperatures the Langmuir and Freundlich isotherms have been used. The Langmuir maximum sorption capacities were determined as bei... Autori: Carmen Paduraru, Lavinia Tofan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25336
Environmental Engineering and Management Journal, Vol. 9 Nr. 2
Environmental Engineering and Management Journal › Vol. 9 › Nr. 2 - 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
Pulsed high voltage discharge technology as a new method for killing Hepatitis C virus (HCV) cells
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 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
Analysis of distribution of oxygen transfer rate in stirred bioreactors for bacterial broths
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractThe study on the distribution of oxygen transfer rate in a stirred bioreactor for Propionibacterium shermanii broths underlined the major influence of the presence and concentration of biomass on the interphasic transfer of oxygen. Owing to the bubbles surface blockage by the bacterial cells, the accumulation of biomass from 30.5 to 120.5 g/l d.w. led to the decreasing of kla for about 1.3- 2.4 times. Compared with the simulated broths without biomass having similar apparent viscosity, t... Autori: Adina Segneanu, Anca-Irina Galaction, Dan Caşcaval ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25364
CsHSO4/mesoporous silica composites - new electrolytes for solid acid fuel cells
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 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
Environmental Engineering and Management Journal, Vol. 8 Nr. 1
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 Include urmatoarele articole:â€? CsHSO4/mesoporous silica composites - new electrolytes for solid acid fuel cellsâ€? Trend in exhaust emissions from in-use gasoline vehiclesâ€? Analysis of distribution of oxygen transfer rate in stirred bioreactors for bacterial brothsâ€? Electrochemical characteristics of Ti6Al7Nb alloy in Ringer's solutionâ€? Pulsed high voltage discharge technology as a new method for killing Hepatitis C virus (HCV) cellsâ€? Hydrodynamic modelling of pollution with LNAPL gene... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25367
Environmental Engineering and Management Journal, Vol. 8 Nr. 4
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 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
Environmental Engineering and Management Journal, Vol. 8 Nr. 5
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 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
Researches on possibility to recover and reuse the Iron(II) sulphate from etching of rolled steels
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 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
Opportunities for valorization of steel slags
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 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
Ecological polymer used for macro-defect-free cements (MDF) production
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 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
Modeling the extraction process of oil from seeds of white mustard (Sinapis alba)
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
White mustard (Sinapis white) is an annual plant of the Cruciferae family originating from the Mediterranean region and is cultivated in Europe and Asia, mainly for its seeds, but also for animal feed or crop rotation. White mustard seed is also an important source of vegetable oil that can be used as fuel. The chemical composition of mustard seed (Sinapis alba) includes glucosinolate (sinalbozida, sinapina free), essential oils, fatty oils (glycerides of oleic acid, linoleic, linole... Autori: Camelia Ciubota-Rosie, Rodica Diaconescu, Irina Volf, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25561
Costs evaluation for ballast water treatment applying the advanced oxidation technology
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 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
Studies on sorption and transport processes of cadmium in soils
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 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
New complexes used to increase the dying process efficiency of the textile materials in the context of sustainable development
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 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
The treatment and minimization of metallurgical slag as waste
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 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
Calendula officinalis L., diclorphenoxiacetic acid (2,4 D), mutagenic, polyphenolic acids
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 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
Analysis of distribution of oxygen transfer rate in stirred bioreactors for fungus broths 1. Suspensions of P. Chrysogenum free mycelia
Environmental Engineering and Management Journal › Vol. 9 › Nr. 2 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
Stability factors and control strategy for biogas production from sludge
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 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
Denitrifying activity of activated sludge in suspension and in biofilm
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 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
Environmental Engineering and Management Journal, Vol. 9 Nr. 5
Environmental Engineering and Management Journal › Vol. 9 › Nr. 5 ? 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
Environmental Engineering and Management Journal, Vol. 9 Nr. 8
Environmental Engineering and Management Journal › Vol. 9 › Nr. 8 ? GREEN SYNTHESIS OF SYMMETRICAL CARBONATE FT-IR STUDY
? SINTERED BASALT AS A PROMISING SUSTAINABLE MATERIAL IN MECHANICAL ENGINEERING
? DESIGN OF BUILDINGS INCLUDING ENVIRONMENTAL IMPACT
? ANALYSIS METHODS FOR PYRAZINE-2,3-DICARBOXYLIC ACID SYNTHESIZED USING ELECTROCHEMICALLY REGENERATED KMnO4
? RESEARCH ON NaCl SALINE AEROSOLS II. NEW ARTIFICIAL HALOCHAMBER CHARACTERISTICS
? DETERMINATION OF AEROSOLS POLLUTANTS ON MEMBRANES. 1. MEMBRANES PREPARATION AND CHARACTERIZATIO... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25660
Environmental Engineering and Management Journal, Vol. 10 Nr. 2
Environmental Engineering and Management Journal › Vol. 10 › Nr. 2 ? Environmental Engineering and Management Journal, Vol. 9 Nr. 4
? THE PROTECTION OF EQUIPMENTS USING VOLATILE INHIBITORS
? CONTINUOUS SURFACE TEMPERATURE MONITORING TO ESTIMATE SENSIBLE HEAT LOSS BY BUILDING FINISHES
? RECYCLE OF POLYAMIDE DYEING WASTEWATER FOLLOWING DECOLORIZATION WITH POLYMERIC SORBENTS
? PERFORMANCE EVALUATION OF AMINO ACID SALT-BASED COMPLEX ABSORBENTS FOR CO2 CAPTURE
? ADSORPTION EQUILIBRIUM STUDIES ON COPPER (II) IONS REMOVAL BY NATURAL WASTE USIN... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25666
Environmental Engineering and Management Journal, Vol. 10 Nr. 5
Environmental Engineering and Management Journal › Vol. 10 › Nr. 5 ? 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
CORRELATION OF MICROCYSTINS AND WATER ENVIRONMENT FACTORS IN MIYUN RESERVOIR OF BEIJING, CHINA
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 Our investigation in 2007 revealed that the concentration of microcystin (MC-LR) in Miyun reservoir was 0.224 μg L-1, below the safety limit of surface drinking water in China (1.0 μg L-1). The phytoplankton community in Miyun reservoir was composed of 8 divisions and 84 species (including genera and varieties). The density of phytoplangkton was 393.71?—104 cells L-1 including 24.6% of Chlorophyta, 32.5% of Cyanophyta and 15.3% of Bacillariophyta. The toxin-producing cyanobacteria incl... Autori: Huimin Li, Guisen Du, Yumei Wu, Dianwei Wu, Jingshi Wanghttp://www.ecozone.ro/reviste.php?RID=25691
SEPARATION OF POLLUTANTS FROM WATER USING THE FREEZE - CONCENTRATION PROCESS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 In this study, the application of freeze-concentration method to treat low-concentration polluted water was demonstrated. The effects of stirring, the temperature in a freezing cabinet and the volume of water involved in the freeze-concentration treatment of pollutants were investigated under laboratory conditions. The removal of pollutant by freeze-concentration treatment was also attempted. Results had shown that the ratio of pollutants removed was about 83% when the experiment was carried out... Autori: Yingjie Dai, Ying Zhang, Baiyin Liu, Masahiro Teduka, Yongbo Lin, Shunitz Tanakahttp://www.ecozone.ro/reviste.php?RID=25709
WIRELESS SYSTEM FOR MONITORING THE SOLAR RADIATION
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:The article presents a method of monitoring the solar radiation components taking into consideration the isotropic model. Thewireless solar radiation monitoring system developed is innovative and original in comparison with the systems already availableon the market. The use of the wireless device, of the rechargeable batteries, of the sensors used for measuring the solar radiationcomponents and the temperature make this system an autonomous and a portable one. An experimental prototype... Autori: Cornel Samoila, Daniel T. Cotfas, Doru Ursutiu, Paul Borza, Petru A. Cotfas ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25735
COPPER SULFIDES THIN FILMS WITH CONTROLLED PROPERTIES FOR PHOTOVOLTAIC CELLS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 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
HUMAN COMPONENTS OF LOW ENERGY BUILDINGS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:The concept of passive and low energy houses became fashionable in the last years and the European Parliament also initiated aproposal to build only near zero energy houses from 2018. The regulations already in force aim at low energy consumption (mostlikely influenced by the wide spreading of the â€?Passivhausâ€? concept in Europe) and by 2018 harmonized regulations andstandards will require the near zero energy building. According to the concept of the Energy Performance of Building D... Autori: András Zöld, Tünde Kalmár ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25751
PREPARATION AND CHARACTERIZATION OF HYBRID NANOCOMPOSITES FILMS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:Hybrid nanocomposites may synergistically combine and enhance the properties of inorganic nanoparticles and organicmolecules.The objective of this paper is to examine particular nanocomposites films based on binary copolymers and inorganic TiO2nanoparticles from the structure and properties point of view. These nanoparticles were dispersed in maleic anhydride-styrene(MAS) copolymer by using elaidic acid, trans isomer of the oleic acid, as coupling agent in order to increase the compatib... Autori: Alina Matei, Dana Perniu, Ileana Cernica, Irina Popescu, Lucia Dumitrescu, Vasilica Schiopu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25755
HYDROTHERMAL SYNTHESIZED TiO2 BASED NANOPOWDERS FOR PHOTOCATALYTIC APPLICATIONS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:Hydrothermal synthesis was used to obtain nanostructured TiO2 based nanopowders. There were prepared pure and ZrO2 dopedcompositions consisting mainly of anatase phase with crystallite size up to 20 nm. The agglomerates of the as-synthesizedmaterials had dimensions ranging from a few hundreds nanometers to 200 microns. The investigations concerning the thermalbehavior revealed the presence of an exothermal effect at around 550oC which could indicate a possible phase transformation ofana... Autori: Adrian Mihail Motoc, Anca Duta, Oana Raita, Radu Adrian Carcel, Radu Robert Piticescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25758
IMMOBILIZATION OF CONIDIOBOLUS CORONATUS ALKALINE PROTEASE ON WASTE FUNGAL BIOMASS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 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
LEAD (II) BIOSORPTION BY A METAL TOLERANT STREPTOMYCES STRAIN
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:The aim of the present study is the optimization of biosorption conditions using a metal tolerant actinomycete (strain 723) for the removal of lead ions from waste water in batch and dynamic flow mode. The optimum conditions for lead biosorption by the strain were determined as initial pH 3.0, biomass amount 2.0 g L-1, and initial metal concentration 400 mg L-1 in the batch condition. The maximum lead biosorption performance was obtained with a 19 mm diameter column, a 1 mL min-1 flow r... Autori: Ayşe Betül Karaduman, Maria Julia Amoroso, Mustafa Yamaç, Sergio Antonio Cuozzo, Zerrin Pat ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25811
THE FREE LEVEL UNIFORM POST-DARCY FILTRATION THROUGH A SPHERE-MADE HOMOGENOUS MEDIUM
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 This paper refers to the post-Darcy free level uniform filtration. The capillary tube fascicle model is applied to this filtration. The theoretical Ch?©zy 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
Environmental Engineering and Management Journal 10/12
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 â€? 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
REMOVAL OF Cr(VI) FROM AQUEOUS ENVIRONMENT USING PEAT MOSS: EQUILIBRIUM STUDY
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 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
EFFECTS OF THE ENVIRONMENTAL STRESS ON TWO FISH POPULATIONS REVEALED BY STATISTICAL AND SPECTRAL ANALYSIS
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 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
EVALUATION OF HEAVY METALS TOXICITY ON TWO MICROBIAL STRAINS ISOLATED FROM SOIL: Azotobacter sp. AND Pichia sp.
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 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
HEAVY METALS IN THE SOILS OF RODNA MINING AREA, ROMANIA AND ZEOLITE EFFICIENCY FOR REMEDIATION
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 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
WHOLE CELL BIOREPORTER FOR THE ESTIMATION OF OIL CONTAMINATION
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 Abstract Oil contamination has been one of the most common environmental pollution due to its threat to both human health andecosystems. It is difficult for the application of conventional chemical analysis to detect oil contamination in-situ, estimatebioavailability and rapidly assess the environmental risk. In this study, two bioreporters were employed for the rapid and directdetection of oil content and genotoxicity in a cutting oil contaminated site in China. Acinetobacter baylyi ADPWH_... Autori: Bo Jiang, Chuan Li, Dayi Zhang, Guanghe Li, Wei E. Huang, Yizhi Song ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25944
EFFECTS OF COD:SULFATE RATIO ON SULFATE REMOVAL FROM OIL SHALE RETORT WATER USING MICROBIAL FUEL CELLS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 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
A TECHNO-ECONOMIC ANALYSIS OF BIODIESEL PRODUCTION FROM MICROALGAE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 8 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 Plus®.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
ASPECTS ON POLYMER-SOLVENT EQUILIBRIUM AND DIFFUSION IN POLYMERIC MEMBRANES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 8 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
FLOW PATTERNS IN THE MAGNETIC NANOFLUID CORE OF A MINIATURE PLANAR SPIRAL TRANSFORMER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThis paper analyses mathematical models and numerical simulation results for a notional miniature, planar, spiral transformer(MPST) fabricated in MEMS technology, for galvanic separation, proposed to equip an electric harvesting device (EHD). Twotypes of core – ferrite and (partially) magnetic nanofluid – are considered. We found that magnetization body forces occur in thesuper-paramagnetic nanofluid core and they result in complex, steady state flows consisting of fully 3D recirculation... Autori: Alexandru Mihail Morega, Jean Bogdan Dumitru, Lucian Pîslaru-Dănescu, Mihaela Morega ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25998
TECHNICAL, ECONOMICAL, SOCIAL AND ECOLOGICAL CHARACTERISTICS OF VACUUM SEWAGE SYSTEM
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractIn this paper we analyzed some characteristics of vacuum sewer systems from technical, economical, environmental and socialperspectives. The vacuum sewer systems transport wastewater with lower pressure (p<pat), and are compared to conventionalsewer systems with free level (p = bed) - gravity and under pressure systems (p>pat) - gravity or pumping systems. Vacuumsewer systems are recommended for rural communities and residential neighbourhoods surrounding urban areas, developed ons... Autori: Corina Panfil, Ion Mirel, Izabella Szigyarto, Monica Isacu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26035
KINETICS AND EQUILIBRIUM ADSORPTION STUDY OF LEAD (II) ONTO LOW COST CLAYS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractThe performance of four low cost Iraqi clays, bentonite (BT), kaolinite (KT), attapalgite (AT) and flint (FT) to remove lead ionsfrom aqueous solutions by adsorption was investigated. Batch experiments were carried out at pre determined equilibration time,adsorbent dosage, solution pH, particle sizes, ionic strength, initial lead ions concentration and temperature. Adsorption of Pb2+ions was strongly affected by pH and best adsorption is achieved at pH 4.5. The systems were investigated ... Autori: Najwa I. Abdulla ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26086
SPEED DISTRIBUTION INFLUENCE IN ROAD TRAFFIC NOISE PREDICTION
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractIn road traffic noise issues, experimental measurements are a relevant element in order to understand the problem and to adjustmodels. Sometimes, when measurements are not possible or in the designing phase, prediction models are used to perform anestimation of the equivalent level produced by a road infrastructure. Usually models parameters are obtained by a statistical datafit and thus they are related to the area where measurements have been performed. These models are suitable for st... Autori: Gerardo Iannone ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26087
STUDIES ON THE TOXICITY OF COMPOSITE TANNERY EFFLUENT USING GUPPY (Poecilia reticulata) AS A FISH MODEL
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractEast Calcutta Wetland ecosystem is a Ramsar Site in India covering almost 51 km2 and is one of the largest of its type. Thiswetland receives a massive load of almost untreated industrial and domestic effluents every day, throughout the year, that hasbeen effectively utilized in pisciculture for having a better yield (2.85 metric tons of fish per 0.01 km2 of water body per annum).The present investigation was carried out to study the toxicity of the untreated effluents discharged from tan... Autori: Utpal Singha Roy ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26094
THE ROLE OF GREEN CHEMISTRY IN BIOMASS PROCESSING
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 The book edited by Haibo Xie and NicholasGathergood focuses on one of the most importantscientific issues of the 21 century which is thereplacing fossil fuel with sustainable alternatives suchas biomass. Fossil fuels are conventional rawmaterials for many industrial sectors includingchemical and energy production. Usage of fossil fuelis limited by their availability, price and carbonfootprint. Biomass is a renewable resource globallyavailable, cheaper and carbon sequestering. Step bystep shiftin... Autori: Adrian Catalin Puitel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26101
SAFETY LEVELS REACHED BY REINFORCED SOIL STRUCTURES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
The paper deals with reinforced soil structures used in critical infrastructures for ecological landfills. During the last 17 years in
Romania 28 such landfills were completed. Romania is however a country where strong earthquakes often occur. About 60% of
its territory feels the seismic actions which combine with the existing ones. During earthquakes in the massive structures of
landfills, huge inertial forces are developing. Due to uncontrolled movements and deformations... Autori: Cristina Feodorov ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26118
ESSENTIAL TOOLS TO MITIGATE VRANCEA STRONG EARTHQUAKES EFFECTS ON MOLDAVIAN URBAN ENVIRONMENT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
In a world of uncertainty, the only constant is change and rapid change produces a multitude of diverse facts. Risk is an integral
part of life. While no country in the world is entirely safe, the lack of capacity to limit the impact of hazards remains a major
burden for all countries and while the world has witnessed an exponential increase in human and material losses due to natural
disasters, there is a need to reverse trends in vulnerability to earthquakes. Available d... Autori: Gheorghe Mărmureanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26140
IMPACTS OF URBAN LANDSCAPE FUNCTIONAL TYPES ON URBAN GREENSPACE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractStudying the relationship between urban typical landscape functional types and vegetation communities will conduct toinformation on management measures, people’s activities etc. Moreover, this could attain an important role for the research ofother ecological phenomena where human activities are involved. According to the data collected from the said plots, the impactof typical landscape functional types of urban core areas on the plant species was analysed. The results show that indigen... Autori: Yantun Song ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26169
INVESTIGATION OF THE RECOVERY EFFICIENCY OF METHANE USING VERTICAL WELLS OPERATING IN LANDFILLS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractMethane production and concentration from six cells were investigated in two landfills in China. Long-term monitoring tests wereconducted to evaluate the methane recovery efficiency of active wells. Results showed that the recovery efficiency of a wellsdistribution simulation method was 75.6% to 83.5%, which was much higher than 50.1% to 53.6% when considering the EPAmethod in the EST (Ecological Sludge Evapotranspiration Technology) cover structure. The recovery efficiency of methane in... Autori: Qiang Xue ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26174
FAST AND ECONOMICALLY VIABLE REMOVAL OF A CATIONIC DYE FROM AQUEOUS SOLUTIONS: KINETIC AND EQUILIBRIUM MODELLING
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractAdsorption of a cationic dye, methylene blue, from aqueous solutions by using sawdust (without any modification) by batchadsorbers was investigated. The surface characterization of the saw dust was carried out by Fourier transform infrared (FTIR) andscanning electron microscopy (SEM) and pHzpc of the surface was also determined. Effects of different parameters such ascontact time and initial concentration, temperature and pH on the process of removal were studied. The process of removal ... Autori: Sushmita Banerjee ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26216
GREEN TECHNOLOGY FOR 6-AMINOPENICILLANIC ACID PRODUCTION - STUDY OF PENICILLIN G HYDROLYSIS IN A BIOREACTOR WITH MOBILE BED OF IMMOBILIZED PENICILLIN AMIDASE UNDER SUBSTRATE INHIBITION
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractThe efficiency of enzymatic hydrolysis of Penicillin G to 6-Aminopenicillanic acid under substrate inhibition has been analyzedfor a bioreactor with mobile bed of immobilized penicillin amidase. The results indicated that the optimum values of temperatureand pH remained the same as for homogeneous hydrolysis using free enzyme. The inhibitory effect induced at higher PenicillinG amount in liquid phase was attenuated by increasing the size of the biocatalyst particles. For this reason, at ... Autori: Ramona Mihaela Matran ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26224
COMPARISON OF BIOSORPTION EFFICIENCY OF FREE AND IMMOBILIZED FUNGAL CONSORTIUM FOR Cd (II) REMOVAL FROM AQUEOUS SOLUTION UNDER TWO AERATION SYSTEMS
Environmental Engineering and Management Journal › Vol. 12 › Nr.12 AbstractCd (II) removal efficiency of free and immobilized fungal consortia of 48-h-old Mucor sp. HI33 + 72-h-old Gliocladium virideAI003 + 72-h-old Aspergillus niger AH09 from aqueous solutions were tested under different aeration systems. Cd (II) removalby free cells under air bubble system aeration was higher (99.91%) than under shaker system aeration. Cd (II) removal byimmobilized fungal consortia was higher (83.18 %) under shaker system aeration and lower in air bubble system aerationrespec... Autori: Arifa Tahir ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26232
BIODEGRADATION OF PHENOLIC WASTEWATERS BY CALCIUM ALGINATE IMMOBILIZED Aeromonas SPECIES
Environmental Engineering and Management Journal › Vol. 13 › Nr. 1 AbstractIndigenous isolated bacterium Aeromonas sp. was immobilized in calcium alginate and the related immobilization parameterslike bead diameter, inoculum size and the initial phenol concentration required for biodegradation were determined. Thebiodegradation activity was most efficient with 4 mm calcium alginate beads. The optimal immobilized biomass required wasabout 28 109 cells/mL. Compared with free-cell suspensions, the alginate matrix used for immobilization of cells provided betterenv... Autori: Abdelkader Namane ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26249
ADSORPTIVE REMOVAL OF HAZARDOUS METHYLENE BLUE BY FRUIT SHELL OF Cocos nucifera
Environmental Engineering and Management Journal › Vol. 13 › Nr. 2 AbstractIn this work, fruit shell of Cocos nucifera (FSCN) treated with H3PO4 has been tested as a low cost adsorbent for the removal of methylene blue (MB) from aqueous solution in batch and column process. The adsorption of MB onto FSCN was affected by the initial solution pH, dye concentration, temperature, column internal diameter and adsorbent dose. The adsorption equilibrium data was fitted well to the Langmuir model and the maximum adsorption capacity was found to be 20.74 mg/g at 40şC. K... Autori: Pijush Kanti Mondal, Rais Ahmad, Rajeev Kumar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26274
MECHANISM OF Cr(VI) BIOACCUMULATION BY Phanerochaete chrysosporium
Environmental Engineering and Management Journal › Vol. 13 › Nr. 2 AbstractThe aim of the present study was to investigate the mechanism of Cr(VI) bioaccumulation by livingand active Phanerochaete chrysosporium. Fungal growth was inhibited beyond 10 mg L-1 Cr(VI) concentration thereby reducing the chromium bioaccumulation capacity. The optimum pH was found to be 6 for the growth and bioaccumulation of Cr(VI) by P. chrysosporium. Bioaccumulation efficiency decreased from 81.47% to 23.82% when Cr(VI) concentration was increased from 10 to 40 mg L-1. A Fourier tra... Autori: Kaustubha Mohanty, Somasundaram Murugavelh ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26280
A ROBUST INEXACT TYPE-2 FUZZY SETS LINEAR OPTIMIZATION PROGRAMMING FOR IRRIGATION WATER SYSTEM MANAGEMENT UNDER UNCERTAINTY
Environmental Engineering and Management Journal › Vol. 13 › Nr. 3 AbstractThis research introduces a new Robust Interval Type-2 Fuzzy Set Linear Programming (R-IT2FSLP) model to manage irrigationwater resources. This method improves upon previous interval fuzzy bound models by allowing uncertainties presented asmultiple fuzzy boundaries. It creates additional degrees of freedom and enable direct modeling of uncertainties within anoptimization framework. It more explicitly reflects the system’s uncertainties under the fuzzy membership function. The more ofR-IT2... Autori: Guohe Huang, Lei Jin ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26324
THE EVOLUTION OF ECO-LABELED PRODUCTS IN ROMANIA
Environmental Engineering and Management Journal › Vol. 13 › Nr. 7 AbstractNowadays, when the problem of environmental protection is quite stringent, the producers are concerned to bring on the marketproducts, which have reduced environmental impact. In their turn, the consumers have become more aware and selective inpurchasing products or services. Due to the financial crisis, consumers buy less but they are asking for quality and environmentalfriendly products. Under these circumstances the producers must find solutions in order to satisfy the consumers’ requ... Autori: Mirela Panainte ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26433
APPLICATION OF MAGNETIC NANOPARTICLES IN DRINKING WATER PURIFICATION
Environmental Engineering and Management Journal › Vol. 13 › Nr. 8 AbstractPathogenic bacteria are fetal to human health, requiring cost-effective and safe approaches to be removed from drinking watersource. With poly-allylamine-hydrochloride (PAAH) stabilization, magnetic nanoparticles (MNPs) were introduced in this studyto remove pathogenic bacteria by electrostatic interaction and magnet capture. High removal efficiency was achieved for fourmain pathogenic species, as Escherichia, Acinetobacter, Pseudomonas and Bacillus, and over 99.5% of the pathogens can b... Autori: Yunfeng Xu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26475
ANALYSIS OF PRIMARY ENERGY USE OF TYPICAL BUILDINGS IN HUNGARY
Environmental Engineering and Management Journal › Vol. 13 › Nr. 11 AbstractThe building stock in Eastern European countries varies greatly in terms of the thermal properties of the materials used. Duringrecent decades, the requirements related to building energy performance have been changed. Nevertheless, the number of newlybuilt buildings has decreased in recent years, so there are few buildings that fulfill the strictest requirements that were recentlyintroduced. Several national programs have been started to help owners improve the energy use of their build... Autori: Béla Bodó ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26529
COST-EFFECTIVE MASS PROPAGATION OF VIRGINIA FANPETALS (Sida hermaphrodita (L.) Rusby) FROM SEEDS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 11 AbstractThe primary objective of this research was to develop safe, programmable and cost-effective technologies of plantlet productionfrom the seeds of undomesticated American populations of Virgina fanpetals (Sida hermphrodita RUSBY). During our seedpriming treatment experiments, approximately 40% of the Virginia fanpetals seeds that were high-quality, infection-free,normally imbibing and germinating seeds. Our spring propagation tray experiments indicated that the spring large-scale trayplant... Autori: Erika Kurucz ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26545
REMOVAL OF AROMATIC COMPOUNDS FROM WASTEWATER BY HEMOGLOBIN SOLUBLE AND IMMOBILIZED ON EUPERGIT CM
Environmental Engineering and Management Journal › Vol. 13 › Nr. 10 AbstractThe potential application of methemoglobin from bovine blood to remove aromatic compounds in the presence of hydrogenperoxide has been evaluated. The organic compounds herein tested include phenols, amines or hydrocarbons, which arepollutants deriving from different industries and display high persistence and toxicity in waters. The oxidative process has beencharacterized by soluble hemoglobin and immobilized on Eupergit CM, using 4-chlorophenol as a model substrate. Theobtained ... Autori: María Teresa Pérez-Prior ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26580
ENHANCED TANNERY WASTEWATER TREATMENT AND ELECTRICITY GENERATION IN MICROBIAL FUEL CELL BY BACTERIAL STRAINS ISOLATED FROM TANNERY WASTE
Environmental Engineering and Management Journal › Vol. 13 › Nr. 12 Abstract
Toxic chemical nature of tannery wastewater makes it difficult to be treated by routine biological treatment processes. Microbes,
already present in tannery wastewater can adapt to these conditions and degrade the organics in tannery wastewater. In the
present contribution, three bacterial electrogenic strains, tolerant to tannery environment, were isolated from soil contaminated
with tannery waste and named as BS1, BS2, and BS3. Tannery wastewater was treated with these pure and mi... Autori: Abhilasha Singh Mathuriya ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26588
ADSORPTION PROPERTIES OF ACTIVATED CARBON FROM WILD PLANT PREPARED BY CHEMICAL ACTIVATION
Environmental Engineering and Management Journal › Vol. 14 › Nr. 1 Abstract
Activated carbon was prepared from renewable plant material, that is Euphorbia rigida, by chemical activation using zinc chloride
as activating reagents. The adsorption of Basic Blue 9 (BB9) onto activated carbon was investigated in a batch system with
respect to contact time, pH and temperature from aqueous solutions. The experimental data indicated that the adsorption isotherms
are well described by the Langmuir isotherm model and the calculated maximum adsorption capacity of acti... Autori: Özgül Gerçel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26627
DEVELOPMENT AND VALIDATION OF UV SPECTROPHOTOMETRIC METHOD FOR DETERMINING THE HERBICIDE MOLINATE WITH AND WITHOUT ALGINATE MICROPARTICLES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 2 Abstract
Molinate (S-ethyl-azepane-1-carbothioate) is a thiocarbamate herbicide used in rice cultivation for the control of grass weeds.
Environmental contamination with molinate is of major concern due to the adverse effects described both for humans and
animals.
Molinate hydrolase, a novel amidohydrolase previously characterized, is responsible for the initial breakdown of molinate,
cleaving the thioester bond of molinate, releasing ethanethiol and azepane-1-carboxylate (ACA). Biotechnolo... Autori: Ana M. Paiva ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26642
INFLUENCE OF HYDROXYPROPYL-BETA-CYCLODEXTRIN ON THE PHYSICOCHEMICAL AND BIOLOGICAL CHARACTERISTICS OF A FLAVONE WITH IMPORTANT PHARMACOLOGICAL PROPERTIES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 2 Abstract
The purpose of this study was to investigate the influence of hydroxypropyl-β-cyclodextrin on diosmin, substance from the
flavones category with important pharmacological properties. We carried out solubility studies, calculating the solubility constant
of the complex formed between diosmin and hydroxypropyl-cyclodextrin at various temperatures (20, 25 and 37 0C) and in the
presence of increasing cyclodextrin concentrations. AL type curves were obtained which suggest the format... Autori: Constantin Ciobanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26643
NEW COMPLEXES OF 2-(1H-1, 2, 4-TRIAZOL-3-YL) PYRIDINE WITH Co(II), Cd(II), Rh(III), IONS: SYNTHESIS, STRUCTURE, PROPERTIES AND POTENTIAL APPLICATIONS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 2 Abstract
Co(II), Cd(II) and Rh(III) complexes with 2-(1H-1,2,4-triazol-3-yl)pyridine (Htzp) as ligand were synthesized and investigated.
The neutral mononuclear complexes with a generic [M(tzp)n] structure have been prepared from Htzp and corresponding
transition metals chlorides at 2:1 and 3:1, respectively molar ratios in H2O–EtOH. The resulted crystalline complexes were
investigated through magnetic and molar conductivity measurements, elemental analysis, FT-IR, mass spectroscopy, t... Autori: Petronela Horlescu ISSN: 1 http://www.ecozone.ro/reviste.php?RID=26652
DISTRIBUTION OF OXYGEN TRANSFER RATES IN STIRRED BIOREACTOR FOR DIFFERENT FERMENTATION BROTHS - OXYGEN-VECTOR DISPERSIONS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 2 Abstract
The oxygen transfer into the fermentation broths could be improved in presence of oxygen-vectors, without intensification of
mixing or aeration. The experimental results for simulated, P. shermanii and S. cerevisiae broths indicated the significant
increase of kLa, by adding n-dodecane, but the magnitude of this effect depends especially on the cells affinity for hydrocarbon
droplets. Therefore, due to the higher affinity of yeasts cells for hydrocarbon droplets during their entire ... Autori: Anca Irina Galaction ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26657
INFLUENCE OF NANOPOROUS MATERIALS ON THE CHEMICAL COMPOSITION OF MERLOT AND CABERNET SAUVIGNON WINES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 3 Abstract
The variation of the content of 12 phenolic compounds from 5 months aged Cabernet Sauvignon and Merlot wine samples treated
with siliceous and aluminosiliceous porous materials was analysed through a HPLC method. The standard physical-chemical
analyses (alcoholic concentration, total acidity, volatile acidity, relative density, reductive sugars, total dry extract, non-reductive
extract, free SO2, total SO2, pH) were registered. The used nanomaterials: SBA-15, Al-MCM-41, KIT-6 were s... Autori: Camelia Elena Luchian ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26667
COMPARATIVE STUDIES ON KINETICS OF ANAEROBIC AND AEROBIC BIODEGRADATION OF LIPIDS FROM OLIVE OIL MILL WASTEWATERS WITH MIXTURE OF Bacillus spp. CELLS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 3 Abstract
The experiments on the olive oil mill wastewater treatment for removing the lipids by anaerobic and aerobic biodegradation with
mixed Bacillus spp. culture indicated that the rate of the aerobic process is up to two times higher than that of the anaerobic one.
In this context, it was found that the influence of the dissolved oxygen concentration on the lipids biodegradation process is
significant, but the kinetic model given in literature does not consider this parameter. Therefore,... Autori: Ramona Mihaela Matran ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26674
MAGNETIC CONTAMINATION OF ENVIRONMENT – LABORATORY SIMULATION OF MIXED IRON OXIDES IMPACT ON MICROORGANISM CELLS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 3 Abstract
Magnetic contamination is considered more and more as a challenging issue related to biosphere pollution with magnetic
materials originating in natural and artificial sources (volcanic eruptions and respectively industrial activities that contributed to
iron and other metal compounds spreading in air, water and soil). Aiming to study the impact of magnetic metal ions such as iron
and cobalt on the metabolism of some environmental microorganisms, in this paper an experimental simulat... Autori: Lacramioara Oprica ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26675
SIMPLE ECO-FRIENDLY -GALACTOSIDASE IMMOBILIZATION ON FUNCTIONALIZED MAGNETIC PARTICLES FOR LACTOSE HYDROLYSIS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 3 Abstract
β-galactosidase from Aspergillus oryzae was strongly immobilized on magnetic particles functionalized with amino groups. By
simple incubation without any activating agents, electrostatic interactions between amino groups and enzymes allowed obtaining
a strong linkage. The immobilization efficiency was studied with the quantification of amino groups of the particles and of
immobilized β-galactosidase. Kinetic parameters, especially the maximal velocity Vmax and the affinity... Autori: Kalim Belhacene ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26682
DEGRADATION AND ADSORPTION BEHAVIOR OF DIBUTYL PHTHALATE IN METHANOGENIC PHASE REFUSE
Environmental Engineering and Management Journal › Vol. 14 › Nr. 3 Abstract
The degradation and adsorption behavior of dibutyl phthalate (DBP) in methanogenic phase refuse was investigated through
laboratory microcosm experiments. The results showed that the half-life of DBP in the sterilized refuse was 5.9 times higher than
in unsterilized samples, but that it decreased by 35.8% when dominant bacterial strains were added. Different concentrations of
DBP did not have obvious effects on its degradation. The half-lives of DBP were decreased by 53.0%, 37.2% an... Autori: Chengran Fang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26690
BIODEGRADATION OF ATRAZINE BY FREE AND IMMOBILIZED CELLS OF Arthrobacter sp. STRAIN DNS10
Environmental Engineering and Management Journal › Vol. 14 › Nr. 4 Abstract
The main purpose of this research was to study the biodegradation ability of atrazine by using Arthrobacter sp. as free and
immobilized cells of the strain DNS10, under several important environmental factors such as temperature, pH, salinity, substrate
concentration. Furthermore, this paper objective was also to assess the process considering the immobilization under extreme
conditions, such as high salinity and high atrazine concentration. DNS10 was immobilized on a sodium alginat... Autori: Zhang Ying ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26702
REMOVAL OF Pb(II) AND Cu(II) FROM AQUEOUS SOLUTIONS BY Chlamydomonas reinhardtii: INFRARED AND THERMAL ANALYSIS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 4 Abstract
The removal efficiency of algal biomass Chlamydomonas reinhardtii for Pb and Cu metal ions was evaluated in single and binary
metal systems. Biosorption experiments were performed in solutions containing 0.2 g L-1 of algal biomass at 30oC and pH 6.
Initial metal ion concentrations ranged from 10-7 M to 10-6 M. Thermal analysis of the biosorbent indicated that algal cells are
composed of groups containing C, H, N, and S. The presence of ionisable functional groups responsible for bio... Autori: Roula Flouty ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26709
SYNTHETIC TEXTILE DYE REMOVAL FROM AQUEOUS SOLUTION USING MODIFIED LOCAL CLAY ADSORBENT
Environmental Engineering and Management Journal › Vol. 14 › Nr. 4 Abstract
Locally sourced clay from Kuala-Kangsar town in Perak state Malaysia was used in both its raw (RKKC) and modified (MKKC)
form as adsorbents for the removal of methylene blue (MB) from synthetic textile wastewater in batch adsorption process. The
raw clay was modified through H2SO4 acid treatment, Al(OH)3 ion exchange, calcinations and then molded into beads before
freeze drying. The BET surface areas of RKKC and MKKC were 11 and 100 m2/g, respectively; their elemental analysis and
... Autori: Manase Auta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26717
REMOVAL OF 2,4 DICHLOROPHENOL FROM WASTEWATER ON COST-EFFECTIVE SORBENTS: KINETICS AND THERMODYNAMICS INVESTIGATIONS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 5 Abstract
Maximum removal (94±1.2%) of 2, 4 dichlorophenol (50 mg.dm-3) was achieved on silica with agitation of 4 hours, at pH 8 and
42°C. The positive enthalpy (ΔH) and negative free energy values (ΔG315K) suggested the endothermic and a spontaneous nature
of sorption. The free energy of the process at all temperature was negative and increased with the increase in temperature. The
values of free energy suggested a spontaneous process where the spontaneity decreased w... Autori: Abdul Ghaffar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26718
DETERMINATION OF EQUILIBRIUM, KINETIC AND THERMODYNAMIC PARAMETERS OF ACID RED 88 ADSORPTION ONTO MONTMORILLONITIC CLAY
Environmental Engineering and Management Journal › Vol. 14 › Nr. 5 Abstract
The aim of this study is to evaluate adsorption kinetics, isotherms and thermodynamic parameters of anionic textile dye (Acid
Red 88) onto montmorillonitic clay from aqueous solutions. The parameters of pH, initial dye concentrations, temperature, and
the adsorbent dosage were investigated experimentally. Four kinetic models including pseudo-second order, pseudo-nth order,
Bangham’s equation and double exponential equation (DEE) were selected to follow the adsorption process. ... Autori: Sedef Dikmen ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26731
ALLELOPATHY POTENTIAL OF Aesculus hippocastanum EXTRACTS ASSESSED BY PHYTOBIOLOGICALTEST METHOD USING Zea mays
Environmental Engineering and Management Journal › Vol. 14 › Nr. 6 Abstract
Natural herbicides may be more sustainable than their chemical homologues, but they are still toxic substances that can affect
humans and animals. Implementation of natural herbicides may require just as many safety precautions as the application of
commercial herbicides, hence the need not to confuse the term "organic" with "non toxic". Allelopathy is accomplished through
chemical inhibition of species towards each other, being an antagonistic phenomenon. Respon... Autori: Ana Maria Vîrteiu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26752
ORGANOPHOSPHORUS PESTICIDE RESIDUES IN SOIL AND VEGETABLE, THROUGH DIFFERENT GROWING SYSTEMS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 6 Abstract
The intensive vegetable system means that more toxic organic and inorganic compounds are entering the environment. The aim
of this study was to obtain the necessary answers on the content of organophosphorus pesticides (OPPs) regarding to quantify
these residues on soils cultivated with vegetables in conventional, organic and conversion systems, and also determine which
pesticide residues are going in edible vegetable parts.
A number of 23 OPPs were analyzed from soil (50 samples) ... Autori: Vasile Stoleru ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26768
INCLUDING SOLAR PANELS ON PARKING AREAS IN THE SUSTAINABLE DEVELOPMENT CONCEPT. WIND EFFECTS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 9 Abstract
Solar energy is one of the most important renewable resources due to its unique set of advantages. In urban configurations, wide
open spaces used for parking areas close to malls, stadiums and industrial areas become justified challenges in revaluating them
by placing solar panels on their wide roofs.
The paper is a first attempt that reflects the scientific interest in the particularities of wind action upon the solar panels sustained
by structural framed elements and which cover ... Autori: Elena Axinte ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26849
GENOMICS AND PROTEOMICS TECHNIQUES IN NANOPARTICLES STUDIES – NEW APPROACH IN ENVIRONMENTAL RESEARCH
Environmental Engineering and Management Journal › Vol. 14 › Nr. 10 Abstract
Environmental research has been significantly enriched by genomic and proteomic methodologies. Particularly in the
atmospheric pollution studies, where a variety of environmental hazards act simultaneously and frequently in close
interrelationship, only such integrative methods can provide a comprehensive analysis. Nanoparticles are a heterogeneous class
of particles, but their health effects have also common aspects. The scope of the article is to present the contribution of genomi... Autori: Marina Otelea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26852
INFLUENCE OF OPERATING CONDITIONS ON THE REMOVAL OF HEAVY METALS FROM INDUSTRIAL WASTEWATER BY BIOSORPTION
Environmental Engineering and Management Journal › Vol. 14 › Nr. 10 Abstract
Free cells of Rhizopus oryzae were used to study adsorption of several cations (Cu2+, Zn2+, Mn2+, Ni2+, Cd2+ and Pb2+) from
wastewater within various experimental conditions. The influence of biomass dosage, pH and temperature on the removal
process was investigated. The sorption efficiency increased with increasing the temperature in the range from 25 ºC to 30 ºC and
pH from 5 to 8. The maximum removal percentage was achieved at a biosorbent concentration 0.25 – 0.3... Autori: Kolishka Tsekova ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26857
AN ISOTOPIC SURVEY OF SOME MINERAL WATER RESOURCES IN THE CARPATHIAN CHAIN (ROMANIA)
Environmental Engineering and Management Journal › Vol. 14 › Nr. 10 Abstract
Popular since ancient times, the mineral waters from Carpathian Chain (Romania) have gained a well-deserved reputation due to
their quality and health benefits. This study provides a description of the chemical and isotopic composition (δ2H, δ18O) of
mineral waters (CO2 - rich and CO2 - free water) located in six of the most popular areas, in order to improve the overall
knowledge about their genesis and recharge mechanisms. The hydro-chemical facies of groundwater vary ... Autori: Roxana Elena Ionete ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26869
CASE STUDY OF THE FIRST VOLCANIC ASH EXERCISE IN ROMANIA USING REMOTE SENSING TECHNIQUES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 11 Abstract
In this paper we present results from the first European (EUR) and North Atlantic (NAT) volcanic ash exercise (VOLCEX)
which includes all the warning phases associated as alerting, reactive and proactive phases. Because volcanic ash represents one
of the most serious natural hazards that could affect aviation safety, the measurement campaign was focused on improving the
reaction of relevant authorities in case of airspace contamination with volcanic ash and, particularly, to assess ... Autori: Livio Belegante ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26874
NOVEL BIOACTIVE AND BIODEGRADABLE MATERIALS FOR MEDICAL APPLICATIONS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 11 Abstract
Poly(vinyl chloride) (PVC) is the most widely used material for the production of medical devices such as intravenous fluid bags
and tubing, enteral feeding, dialysis equipment and catheters. Despite of their numerous advantages, the plastic medical devices
are non biodegradable and prone to microbial colonization causing biofilm associated infections which are difficult to treat and
tend to chronicisation. A possible solution to surpass these limitations could be the fabrication of... Autori: Petruța Stoica ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26894
FROM SEEDS TO BIODIESEL: EXTRACTION, ESTERIFICATION, TRANSESTERIFICATION AND BLENDING OF Jatropha curcas OIL
Environmental Engineering and Management Journal › Vol. 14 › Nr. 12 Abstract
The aim of this research was to find the optimal method of extracting oil from jatropha seeds and to discovery a technically
viable process in which high quality biodiesel can be produced. To begin with, the oil extraction yield obtained with solvent
extraction was 34%, using n-hexane in 2 hours. Then, the properties and fatty acid composition of jatropha oil were investigated.
We must emphasize that jatropha oil contains about 11% of free fatty acids (FFA), which is far beyond the ... Autori: Carmen María Fernández ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26909
ANALYSIS OF HYDRIC EROSION PRODUCED BY THE SIRET RIVER, ROMANIA DURING 1989 - 2008
Environmental Engineering and Management Journal › Vol. 15 › Nr. 3 The objective of this article is to study the evolution of soil erosion produced by the Siret River during 1989 – 2008. The hydrophysical
and mechanic action of the river flow manifests by freeze, thaw, erosion, transportation, and alluvial deposit processes.
The researched section was delimited in a sector of Siret River bed, where the exploitation of mineral aggregates is carried out on
large areas. The influences and effects of deficient exploitation of mineral aggregates have a dire... Autori: Stelian Cartacuzencu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26977
EFFECTS OF DIFFERENT SANITIZATION TREATMENTS ON SOIL CHARACTERISTICS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 3 In the present study, the effects of two methods for thermal sanitization of soil, by oven and by autoclave, and two non-ionizing
radiation sterilization methods, UVC and microwave on pH, conductivity, dry weight, total number of germs and respiration of
samples from neutral commercial soil were evaluated, using international standard methods. Also, the infrared and UV-VIS
spectroscopy were applied for the determination of chemical properties and structural characterization of humic acid and
... Autori: Dumitra Raducanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26985
WOOD WASTE AS A RENEWABLE SOURCE OF ENERGY
Environmental Engineering and Management Journal › Vol. 15 › Nr. 3 The renewable sources of energy represent a viable alternative for satisfying the energetic needs of humanity in case the fossil
fuels reserves are exhausted, which is estimated to occur in maximum 25 years if the current rate of exploitation is maintained.
Nowadays, there are several concerns about the valorization of the energetic potential of these resources (wind, water flows,
solar, geothermal energy etc.), but also a series of extremely beneficial practical uses (i.e. wind parks, photov... Autori: Daniela Suteu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26989
REMOVAL AND RECOVERY OF Al(III) AND Cr(VI) FROM AQUEOUS SOLUTION BY WASTE BLACK TEA
Environmental Engineering and Management Journal › Vol. 15 › Nr. 4 In this study the immobilized waste black tea (Camellia synensis) was used as biosorbent for the removal and recovery of Al(III)
and Cr(VI) ions from the synthetic aqueous solutions. Batch experiments were conducted to optimize the various biosorption
parameters that affect the biosorption capacity of immobilized waste black tea. Maximum biosorption capacity was found with a
biosorbent dose of 0.1g/100 mL for both metal ions. Optimum biosorption capacity for both Al(III) and Cr(VI) ions was o... Autori: Haq Nawaz Bhatti ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27004
USE OF THE “HOTSPOT” CODE FOR SAFETY AND SECURITY ANALYSIS IN NUCLEAR POWER PLANTS: A CASE STUDY
Environmental Engineering and Management Journal › Vol. 15 › Nr. 4 Accidents in spent nuclear fuel reprocessing plants are a critical issue for the safety of people, of operators and the environment,
as well as for the security of the plants. The purpose of this work is to demonstrate the possibility to use a free license code to
simulate radiological diffusion after an accident in these particular plants, in order to obtain a model which allows identifying
escape routes for the people potentially involved in the fallout. The authors performed a benchmark an... Autori: Mariachiara Carestia ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27015
EFFECT OF HYDROLOGICAL CONNECTIVITY ON PHYSICOCHEMICAL PROPERTIES OF BOTTOM SEDIMENTS OF FLOODPLAIN LAKES – A CASE STUDY OF THE ŁYNA RIVER, NORTHERN POLAND
Environmental Engineering and Management Journal › Vol. 15 › Nr. 6 The investigation of bottom sediments in oxbow lakes was conducted in the free-flowing, meandering section of the Łyna River
in N Poland. Seven oxbow lakes, differed by a degree of hydrological connectivity with the river channel, were chosen for the
present study. In samples taken from 21 sediment profiles, particle size distribution, pH, bulk density, CaCO3, organic matter,
total organic carbon as well as total forms of N, P, K, Ca, Na, Mg, Mn and Fe were determined. The gradient of de... Autori: Szymon Kobus ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27052
FACTORS INFLUENCING THE THERMOCHEMICAL BEHAVIOURS OF TIRE RUBBER: PART I - INFLUENCE OF FIBER AND METAL
Environmental Engineering and Management Journal › Vol. 15 › Nr. 6 In this paper both kinetic and thermodynamic parameters of thermochemical transformation of waste tires are evaluated by using
thermogravimetric analysis (TGA). For rubber thermochemical decomposition, individually and in the presence of other tires
components, some kinetic and thermodynamic parameters such as energy of activation (Ea), frequency factor (A), reaction
enthalpy (ΔH), entropy (ΔS) and free energy (ΔG) have been calculated by using the integration method.
The e... Autori: Sana Kordoghli ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27060
INFLUENCE OF FREEZING/THAWING AND DRYING/MILLING ON BIOCHEMICAL METHANE POTENTIAL
Environmental Engineering and Management Journal › Vol. 15 › Nr. 7 In studies of biochemical methane production (BMP) researchers often collate a large number of samples at the same time for a
sample archive. The samples are often frozen to avoid microbial transformation, further homogenized by grinding. We studied
the influence of subfreezing/thawing and drying/milling of energy crop on BMP and anaerobic biodegradability (BD). Relative
standard deviation (RSD, %) between the BMP of controls and of the subfrozen was in the range 2.1–9.0%, and of the
d... Autori: Jin Mi Triolo ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27079
EVALUATION OF BIOELECTROGENIC POTENTIAL OF FOUR INDUSTRIAL EFFLUENTS AS SUBSTRATE FOR LOW COST MICROBIAL FUEL CELLS OPERATION
Environmental Engineering and Management Journal › Vol. 15 › Nr. 8 Microbial Fuel Cells (MFCs), the bioelectrochemical devices for conversion of waste into electricity through bacterial metabolic
activity can use substrates with different complexity and strength. Wastewaters with moderate to high organic content can be
exploited as MFC substrates. In this study, four different industrial wastewaters (from a chemical company, milk industry, soyabased
food and soft-drink company and laundry) with different compositions were used as substrates in identical MFCs... Autori: Deepak Pant ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27117
PRODUCTION OF BIOPLASTIC FROM WASTE OILS BY RECOMBINANT Escherichia coli: A PIT-STOP IN WASTE FRYING OIL TO BIO-DIESEL CONVERSION RACE
Environmental Engineering and Management Journal › Vol. 15 › Nr. 9 Waste frying oil (WFO) is a complex and heterogeneous waste collected mainly from restaurants and, to a lesser extent, from
food processors and households. In the last decades, interest for this waste has deeply grown and a strong competition in
grabbing this raw material has begun. About 90% of WFOs collected in Europe is recycled for biodiesel production, being the
high free fatty acids (FFAs) concentration in WFOs one of the main drawback limiting the yield of the conversion process. In th... Autori: Cinzia Pezzella ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27130
EFFECT OF METHYLENE BLUE ON ELECTRON MEDIATED MICROBIAL FUEL CELL BY Saccharomyces cerevisiae
Environmental Engineering and Management Journal › Vol. 15 › Nr. 9 Microbial fuel cells (MFCs) are bioelectrochemical reactors that directly convert the chemical energy stored in chemical bonds of
organic substrates, to electrical energy. Saccharomyces cerevisiae was implemented as biocatalyst in the anaerobic anode
compartment of an MFC using glucose as carbon source and methylene blue as electron mediator. Our results showed the effect
of methylene blue on the microbial metabolism and the reversibility of the redox reaction of the shuttle mediator in the p... Autori: Ruggero Rossi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27131
THE EFFECT OF Si CONTENT ON FERRIHYDRITE SORPTION CAPACITY FOR Pb(II), Cu(II), Cr(VI), AND P(V)
Environmental Engineering and Management Journal › Vol. 15 › Nr. 9 In this study, the impact of silicate admixture in 2-line ferrihydrite on its sorption properties is presented. Synthetic ferrihydrites
with broad Si content in the range of 0 to 1.5 Si/Fe molar ratios were prepared and characterized using X-ray diffractometry
(XRD), Fourier-transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM-EDS). With an increase in the
Si/Fe ratio, a typical XRD peak at 2.5Å broadens and shifts toward 3 Å; the position of Si-O stretchi... Autori: Gabriela Pieczara ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27140
MULTI-CRITERIA METHODS FOR SELECTION OF ENCAPSULATION MATERIALS FOR PHOTOVOLTAIC CELLS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 10 In this paper we applied multi-criteria methods of decision in order to establish the best encapsulation material to be used in
producing photovoltaic modules. The encapsulation materials play an important role in establishing the PV module performance,
especially if referring to their ability to increase their life time. For our study, we have considered the most widely used
encapsulation materials available on the market, such as Ethylene-Vinyl Acetate (EVA), Polyvinyl Butyral (PVB), Thermo... Autori: Gabriela Demian ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27169
BIOSORPTION OF LEAD(II) FROM AQUEOUS SOLUTIONS USING ADSORBENTS PREPARED FROM PEANUT HULLS, SOYBEAN SHELLS AND GRAPEFRUIT PEELS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 11 Equilibrium and kinetics of biosorption of lead(II) from aqueous solutions by local low-cost agricultural by-products – peanut hulls, soybean shells and grapefruit peels were compared to develop high-efficient and low-cost biosorbents for removal of lead(II) from wastewater. Batch kinetics showed adsorption equilibrium at about 90 min and the adsorption process for the three biosorbents was better represented by the pseudo-second-order model than the pseudo-first-order model. Batch equilib... Autori: Rui Yu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27176
PRO SUSTAINABLE DEVELOPMENT: THE INFLUENCE OF THE LAW OF ENTROPY ON ECONOMIC SYSTEMS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 11 The discovery of entropy in thermodynamics has set fundamental premises for the study and analysis of the relationship between
the entropy law and economic processes, as one of the main objectives of such endeavours was to separate the qualitative aspects
from the realm of economics. The law we have chosen to focus on in the present paper states that, in the universe or in isolated
structures, entropy increases constantly and irreversibly, thus causing a continuous and unidirectional degradat... Autori: Ionel Bostan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27179
MULTIFUNCTIONAL RESIN DIPHONIX IN ADSORPTION OF HEAVY METAL COMPLEXES WITH METHYLGLYCINEDIACETIC ACID
Environmental Engineering and Management Journal › Vol. 15 › Nr. 11 The aim of this research is to investigate adsorption characteristics of Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Pb(II) complexes with MGDA (methylglycinediacetic acid) from aqueous solutions by using the multifunctional chelating ion exchanger Diphonix. MGDA, belonging to a group of new generation complexones which readily undergo biodegradation, is patented by BASF and marketed under the brand name Trilon M. Optimum adsorption conditions were determined as a function of phase contact time, ... Autori: Justyna Jachuła ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27183
EFFECTS OF HYDRODYNAMIC STRESS AND FEED RATE ON THE PERFORMANCE OF A MICROBIAL FUEL CELL
Environmental Engineering and Management Journal › Vol. 15 › Nr. 11 There has been a growing amount of work on microbial fuel cells (MFCs) in the last years, both on the microbiological issues and on the engineering ones, which managed to increase power outputs by an order of magnitude. However, they are technically still far from attaining acceptable levels of power output. Therefore, it is necessary to go deeper in understanding the mechanisms involved in electricity production with MFCs and use this new knowledge to achieve significant increases in power outp... Autori: Vânia Oliveira ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27187
ATHERMAL MICROWAVE RADIATION AFFECTS THE GENETIC OF VEGETAL EMBRYOS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 12 In this paper low power microwave radiation impact on Zea mays root meristeme tissues was investigated. Seeds with uniform genophond were exposed for 3 hours at 10 W incident power level in controlled condition to continuous wave at three different frequencies (0.6 GHz, 1 GHz and 2.5 GHz) and let to germinate after electromagnetic exposure. Dosimetric assessment made experimentally and computationally allowed the proper energetic characterization of the interaction between vegetal tissue and rad... Autori: Mihaela Răcuciu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27196
AN XFEM BASED ALGORITHM FOR NUMERICAL OPTIMIZATION OF CURRENT DENSITY IN ELECTROCHEMICAL APPLICATIONS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 12 This paper presents an advanced numerical algorithm for the optimization of the current density distribution in electrochemical applications. The optimization principle consists in the distortion of the electric field by an insulating shield properly positioned between the electrodes. Such a distortion influences the distribution of current density at the electrodes under consideration. The electrochemical problem is approached by a Laplace equation which is numerically solved using a mesh-free ... Autori: Alexandru Avram ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27199
HEALTH CARE SYSTEM FOR MONITORING OLDER ADULTS IN A “GREEN” ENVIRONMENT USING ORGANIC PHOTOVOLTAIC DEVICES
Environmental Engineering and Management Journal › Vol. 15 › Nr. 12 In this paper, we propose to present real solutions for close self-monitoring of older adults, given the permanent assistance and rapid intervention needed in emergency medical situations. The recent medical devices integrate existing or in development technologies that are easy to use, affordable, accessible and sustainable solutions that address a range of needs because the ultimate goal is the ensuring of a “living actively and independently at home” environment for older adults. ... Autori: Iuliana Chiuchisan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27200
A NEW SOLUTION FOR THE OXYGENATION OF STATIONARY WATERS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 1 For a more efficient oxygenation of free surface stationary waters, the air bubble emitted by a fine bubble generator must describe a trajectory which should be as long as possible. This purpose can be achieved by moving the fine bubble generator through water. In the paper there are determined the equations of motions and trajectory of the air bubble in stationary (still) waters. The paper aims to establish the equation of such a trajectory and the manner in which the speed of the moving genera... Autori: Adrian Costache ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27222
LEAD(II) REMOVAL FROM AQUEOUS SOLUTIONS BY SERBIAN ZEOLITIC TUFF
Environmental Engineering and Management Journal › Vol. 16 › Nr. 1 The present study was aimed at examining the ability of the natural zeolitic tuff from the Zlatokop deposit in Serbia to remove Pb(II) ions from aqueous solutions under various conditions. It has been found that the adsorption proceeds via an ion-exchange reaction in which the Na+ ions from the clinoptilolite phase of the tuff are replaced to a high degree by aqueous Pb(II) ions. The removal capacity of the clinoptilolite at 298 K varies from 78 mg Pb g–1 (for C0 = 100 mg Pb dm–3) to... Autori: Djordje Stojakovic ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27234
MODELING EQUILIBRIUM DATA FOR Cd (II) ADSORPTION BY PEAT USING NON-LINEAR REGRESSION ANALYSIS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 3 The Romanian peat was used as low-cost adsorbent to remove Cd(II) ions from aqueous solutions. The cadmium adsorption capacity of the peat was studied as a function of the solution pH (3-5.5) and temperature (293 – 333 K). Adsorption capacity was found to increase with the pH increasing and temperature decreasing and attained a maximum value of 27.9 mg/g at pH = 5±0.1 (acetate buffer) and 293 K. In addition, various thermodynamic parameters such as free energy change (ΔG0), en... Autori: Catalin Balan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27276
USE OF MACROINVERTEBRATES FOR ASSESSMENT OF RESTORATION WORKS INFLUENCE ON THE HABITAT IN FLOODPLAIN LAKES
Environmental Engineering and Management Journal › Vol. 16 › Nr. 4 The paper presents a study concerning the influence of the hydraulic and hydrological connectivity among the oxbow lakes and
the restoration of riparian-zones have on aging. Interconnectivity oxbow lakes emerge after complex regulating works for the
protection of the shores and bottom of the lakes. Research has analyzed the influence of the hydraulic connectivity of three lakes located in northern Poland on the structure of associated bottom invertebrates – elements that monitor the cond... Autori: Anca Balan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27342
TOOLS FOR PREVENTING OCCUPATIONAL RISKS FOR SMEs - A PREREQUISITE FOR IMPROVING PRODUCTIVITY
Environmental Engineering and Management Journal › Vol. 16 › Nr. 6 The paper is focused on a research project aiming to provide conditions for market competitiveness of producers and to guarantee the free movement of Romanian products on the EU. This is done by guaranteeing essential health and safety requirements applicable to work equipment in order to implement policies set out in the strategy EUROPE 2020. This strategy takes into account the priority of: favourable growth of inclusion-promoting an economy with a high rate of employment, ensuring social and ... Autori: Anca Elena Antonov ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27371
A STUDY ON THE REMOVAL OF CONTAMINANTS FROM SECONDARY TREATED MUNICIPAL WASTEWATER BY SOLAR PHOTOCATALYSIS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 7 The aim of this work was to study the effectiveness of photocatalysis in the removal of contaminants from secondary treated municipal wastewater, on a batch scale. The samples were collected from the outlet of the secondary clarifier in the municipal wastewater plant located at Al Khoudh, Muscat, Sultanate of Oman. The influences of TiO2 catalyst loading and solar radiation exposure time were investigated for the removal of COD and total Coliforms. 60% removal of COD was achieved with a catalyst... Autori: Anna Jesil Cheriyan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27376
BIOPHYSICAL FACTORS AFFECTING THE ANAEROBIC DIGESTION OF WASTE COOKING OIL IN MODEL SYSTEMS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 8 The anaerobic digestion (AD) of fat-containing waste is often prolonged in time and problematic. Differences in AD performances could rely in a different probability for microorganisms to access the substrate. The aim of this study was to study the AD of waste cooking oil (WCO) with a biophysical approach. Two laboratory experiments were carried out using model systems consisting of WCO + hydration medium (HM) in 100 mL, static, in-batch reactors. In the first experiment, we assumed the WCO to H... Autori: Francesca Fiume ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27409
THE SMART-GREEN RECYCLING
Environmental Engineering and Management Journal › Vol. 16 › Nr. 8 This paper describes shortly some outcomes of a project aiming to apply a scientific research directly to industry, passing
through a system that wants to promote an economic "Pact" in relation to the new construction and renovation projects of energy,
according to its fundamental guidelines of the moment: renewable energy and energy efficiency. The key point is to produce
energy from recycled materials that become functional to dwellings (from the garden shed to furnishings, etc.),... Autori: Marco Santarelli ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27421
ROLE OF EXTRACELLULAR POLYMERIC SUBSTANCES ON TWO BIOLOGICAL REACTORS PERFORMANCE TREATING PHENOL
Environmental Engineering and Management Journal › Vol. 16 › Nr. 9 The objectives of this study were to investigate the composition of activated sludge biofilms and flocs in a sequential batch
reactor (SBR) and in a sequential biofilm batch reactor (SBBR), and to evaluate the role of the extracellular polymeric substances
produced in the reactors in comparison with the respective treatment efficiency of domestic wastewater, containing 1 to 40 mg/L
phenol. Both reactors showed variable removal efficiencies. The SBR was found to contain more protistan species ... Autori: Chrysi A. Papadimitriou ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27422
HIGH YIELD OF ETHANOL FROM WASTE APPLE JUICE by IMMOBILIZED CELLS OF Saccharomyces cerevisiae S-3S ON SUGAR CANE BAGASSE IN FED BATCH SYSTEM
Environmental Engineering and Management Journal › Vol. 16 › Nr. 9 The aim of present study was the effective utilization of waste apple for high yield of ethanol using immobilized cells of
Saccharomyces cerevisiae S-3S through fed-batch fermentation. Low cost biomaterial was also developed for immobilization.
Immobilization was carried out on different inert supports (agar-agar, k-carrageenan, Ca-alginate, sugar cane bagasse and apple
bagasse). The results revealed that immobilized cells of S. cerevisiae S-3S gave high yield of ethanol as compared to free c... Autori: Arifa Tahir ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27425
EMPIRICAL STUDY ON THE INTERDEPENDENCE BETWEEN ENVIRONMENTAL WELLBEING, FINANCIAL DEVELOPMENT AND ECONOMIC GROWTH
Environmental Engineering and Management Journal › Vol. 16 › Nr. 11 This study investigates the dynamic relationship between economic growth, energy consumption, financial development, and CO2 emissions at macro level in the case of 49 countries from Europe and Central Asia over a two-year period. The research focuses exclusively on country-level characteristics and uses a heteroscedasticity-consistent standard error estimator (HC3) to analyze the aforementioned relationship. The proposed econometric models test whether: i) the level of development of financial ... Autori: Marilena Mironiuc ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27494
USING WASTE FOUNDRY SAND FOR THE REMOVAL OF MALACHITE GREEN DYE FROM AQUEOUS SOLUTIONS - KINETIC AND EQUILIBRIUM STUDIES
Environmental Engineering and Management Journal › Vol. 17 › Nr. 1 The aim of this study was to examine the adsorption of malachite green dye from aqueous solutions on the waste foundry sand. The effects of contact time, adsorbent amount, pH and initial dye concentration were investigated. The equilibrium adsorption data were analyzed by Langmuir, Freundlich and Temkin adsorption isotherm models. The adsorption capacity of waste foundry sand for the removal of malachite green dye was determined with the Langmuir and found to be 23.29 mg/g. The adsorption isothe... Autori: Elif Hatice Gürkan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27536
ESTIMATION OF VEHICLE EMISSION ON MAINLINE FREEWAY UNDER ISOLATED AND INTEGRATED RAMP METERING STRATEGIES
Environmental Engineering and Management Journal › Vol. 17 › Nr. 5 On freeways with multiple on-ramps, it is a common practice to design a ramp metering strategy so as to regulate the entering rates from ramps and minimize the disruptions on the mainline. Most of the existing studies examine the performance of ramp metering on mobility and safety, rather than their impacts on the environment. This paper focuses on the estimates of vehicle emissions along mainline freeways under various ramp metering strategies. Vehicle speed and acceleration rates were measured... Autori: Jianbang Du ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27600
MANAGEMENT OF CHEESE WHEY BY FILM FREEZE CONCENTRATION
Environmental Engineering and Management Journal › Vol. 17 › Nr. 6 This study evaluates the behavior of freeze concentration of cheese whey (CW). Parameters studied were: Chemical Oxygen Demand (COD), Total Dissolved Solids (TDS), Suspended Solids (SS), Total Settleable Solids (TSS), pH and electrical conductivity (EC) in the concentrated cheese whey and in the ice. The final concentration of TDS reached was 25 ± 0.16 %wt for the liquid phase, which corresponds to a reduction of 83% of the initial volume. The COD in the ice fractions had lower values tha... Autori: Freddy Belén ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27613
KINETIC AND ENZYME RECYCLING STUDIES OF IMMOBILIZED β-GLUCOSIDASE FOR LIGNOCELLULOSIC BIOMASS HYDROLYSIS
Environmental Engineering and Management Journal › Vol. 17 › Nr. 6 β-glucosidases are very important in the improvement of cellulose degradation rates by diminishing the inhibition of end products. Although, cellulase cost has reduced significantly in last decade but still the high costs of biomass saccharification is one of the main challenges for the commercialization of ethanol from LC biomass. In this work, β-glucosidase immobilization in calcium alginate was optimized using response surface methodology. 89% immobilization efficiency was achieved ... Autori: Ruchi Agrawal ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27614
STUDY OF THE DEVOLATILIZATION KINETICS OF KENAF BY ISOCONVERSIONAL METHODS. INFLUENCE OF VARIABLES
Environmental Engineering and Management Journal › Vol. 17 › Nr. 6 The thermal degradation of kenaf (Hibiscus cannabinus) under the effect of several variables (particle size, Ar flow rate, sample initial mass and heating rate) was investigated. From experimental data and by application of various model-free methods (Friedman, Kissinger-Akahira-Sunose and Flynn-Wall-Ozawa), the activation energies (EA) were calculated as a function of conversion. The results obtained allowed to conclude that kenaf follows a multi-stage degradation mechanism, with EA values rang... Autori: Silvia Román ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27617
Environmental engineering and Management Journal No. 6
Environmental Engineering and Management Journal › Vol. 17 › Nr. 6 FLUCTUATION OF RIVER NETWORK WATER ENVIRONMENTAL CARRYING CAPACITY IN A COMPLICATED RIVER-LAKE SYSTEM
• MINERALOGY AND GEOCHEMICAL DISTRIBUTION OF HEAVY METALS FOR THE FAGUL CETĂȚII TAILINGS, ROMANIA
• ACCUMULATION AND AVAILABILITY OF TRACE ELEMENTS FROM SOIL INTO ORIENTAL TOBACCO GROWN IN MACEDONIA
• OLFACTORY EFFECT ON LANDSCAPE PREFERENCE
• EFFECT OF MOLASSES ADDITION AS BIODEGRADABLE MATERIAL ON PHENOL REMO... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27628
EFFECTS OF α-CYPERMETHRIN PESTICIDE ON DNA STABILITY AND OXIDATIVE ENZYMES IN MAIZE (Zea mays)
Environmental Engineering and Management Journal › Vol. 17 › Nr. 2 α-cypermethrin is a pyrethroid and environmental genotoxic pesticide extensively used worldwide for agricultural applications. However, like other pesticides, it affects non-target organisms as well as target organisms and causes various toxic effects. To evaluate α-cypermethrin toxicity in non-target organisms, the effect of α-cypermethrin on the activity of malondialdehyde (MDA, an indicator of lipid peroxidation) content, antioxidant enzymes (superoxide dismutase, SOD; perox... Autori: Ozkan Aksakal ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27647
FRACTIONATION OF ZINC IN MUNICIPAL SOLID WASTE LANDFILL LEACHATE: EFFECT OF LEACHATE RECIRCULATION
Environmental Engineering and Management Journal › Vol. 17 › Nr. 2 Two sets of simulated landfill reactors, namely conventional landfill (CL) and leachate recirculated landfill (RL) were operated to investigate the effect of leachate recirculation on the fractionation of Zn in municipal solid waste (MSW) landfill leachate. Zn in landfill leachate was fractionated into three fractionations: particulate and colloidal matter >0.45 μm, non-labile complexes <0.45 μm and free cations/labile complexes <0.45 μm. The result showed that the recirculatio... Autori: Jun Yao ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27648
COMPARISON OF PERFORMANCE OF AN EARTHEN PLATE AND NAFION AS MEMBRANE SEPARATORS IN DUAL CHAMBER MICROBIAL FUEL CELLS
Environmental Engineering and Management Journal › Vol. 17 › Nr. 2 The performance of microbial fuel cells (MFC) employing an earthen plate as a membrane separator is compared to that using Nafion 117 in an identical up-flow dual-chambered cylindrical cell configuration. The MFC configuration is of a cylindrical outer cathode chamber separated by the membrane from a concentric rectangular inner anode chamber. The fuel cells, operated under continuous mode at hydraulic retention time of 12 hr, achieved average chemical oxygen demand removal efficiency of 60% and... Autori: Partha Sarathi Jana ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27649
A BRIEF REVIEW ON RECENT ADVANCES IN AIR-CATHODE MICROBIAL FUEL CELLS
Environmental Engineering and Management Journal › Vol. 17 › Nr. 7 The performance of cathode affects the overall performance of a microbial fuel cell (MFC), and cathode configuration affects the fabrication cost of this bioelectrochemical system in a large way. Various modifications in cathode structures have been observed in MFCs. Among them air-cathode MFCs are considered to be the most efficient and sustainable option due to elimination of aeration, as required in aqueous cathodes which consumes energy and increases operating cost of MFCs. An air cathode us... Autori: Pritha Chatterjee ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27680
SURVEY OF INDUSTRIAL WASTEWATER TREATMENT PERFORMANCE WITH BIOLOGICAL MONITORING OF PROTOZOA IN THE INDUSTRIAL PARK OF ABADAN
Environmental Engineering and Management Journal › Vol. 17 › Nr. 7 Industrial wastewater is of particular importance. In most wastewater treatments, physicochemical parameters are used to determine the performances which are costly while protozoa can be used as less expensive biological indicators to determine the efficiency of the treatment plant. The purpose of this study was to investigate the relationship between protozoa and physic-chemical characteristics of the Abadan wastewater treatment industry.
Samples were collected from wastewater stabilization po... Autori: Abotaleb Bay ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27694
HEXAVALENT CHROMIUM ADSORPTION CAPABILITY ONTO CARBON BLACK: KINETIC AND THERMODYNAMIC ASPECTS
Environmental Engineering and Management Journal › Vol. 17 › Nr. 8 The adsorption rate and dynamic behavior of the system are important factors as regards the process design and operational control. The aim of this study was to find a suitable kinetic model for the hexavalent chromium removal in a batch reactor. The experimental data were analyzed using four adsorption kinetic models: the pseudo- first and second order equations, the Elovich equation, and the intraparticle diffusion equation, so as to determine the best fit equation of the Cr(VI) adsorption ont... Autori: Ankica Radjenovic ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27773
TOLUENE BIOFILTRATION AS AFFECTED BY RYEGRASS ROOTS
Environmental Engineering and Management Journal › Vol. 17 › Nr. 8 Gaseous toluene biofiltration as affected by ryegrass (Lolium perenne L.) roots was investigated in this study. The results revealed that the populations of bacteria, actinomycetes were larger in the ryegrass rhizosphere than in the bulk soil since ryegrass provided root exudates as major nutrients available for the microorganisms. An increase in the microbial populations in a ryegrass-growing biofilter would significantly stimulate toluene biodegradation in comparison with a vegetation-free bio... Autori: Zhongjun Xu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27772
CONTROL MEASURES FOR Cyanobacteria AND Cyanotoxins IN DRINKING WATER
Environmental Engineering and Management Journal › Vol. 17 › Nr. 10 Algal bloom can represent a serious consequence of the eutrophication of surface water. Some of these algae, called cyanobacteria, are of particular interest for their effect on human health due to their capacity to produce cyanotoxins. In many countries, in fact, there are important problems of poisoning attributed to toxic cyanobacteria and contamination of water sources (specially lakes) resulting in increased cyanobacterial growth. Cyanobacteria can become particularly harmful for humans whe... Autori: Sabrina Sorlini ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27800
BIOTREATMENT OF Cr(VI) - CONTAINING WASTEWATER MEDIATED BY INDIGENOUS BACTERIA
Environmental Engineering and Management Journal › Vol. 17 › Nr. 11 Indigenous Pseudomonas veronii 2E, Klebsiella oxytoca P2 and Klebsiella ornithinolityca 1P were tested as catalysts for the transformation of Cr(VI) to Cr(III) for Cr(VI)-containing wastewater biotreatments. The Cr(VI) biotransformation was assayed during bacterial growth and by using pre-grown quiescent cells. Proof of the unsuitability of a biotreatment based on Cr(VI)-reduction during bacterial growth was found: the reduction rate and the maximum Cr(VI) concentration able to be reduced were t... Autori: Mauricio Javier Alessandrello ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27853
TREATMENT OF BIODIESEL WASTEWATER BY SOLVENT EXTRACTION: EVALUATION OF KINETIC AND THERMODYNAMIC DATA
Environmental Engineering and Management Journal › Vol. 17 › Nr. 11 Transesterification is one of the main biodiesel production method that produces huge amount of wastewater due to the high organic substance content (COD =300000-400000 mg/L, oil and grease= 17000-25000 mg/L). Although there are several treatment methods, flotation is the current conventional treatment method for oil and grease (O&G) before the biological treatment. In this study solvent extraction method was developed for pre-refining of biodiesel wastewaters. For the solvent extraction met... Autori: Pınar Tanattı ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27850
LABORATORY INVESTIGATION ON THE PURIFICATION OF FOOD WASTEWATER BY FREEZE CONCENTRATION
Environmental Engineering and Management Journal › Vol. 17 › Nr. 11 This study was carried out to determine the feasibility of applying a freeze concentration technique to rarefy milking wastewater
using either a stationary wastewater vessel (the first series of tests) or a rotary ice–making machine (the second series of tests). In
this study, we investigated the impact of freezing temperature, initial milking wastewater concentration and vessel depth upon the
removal rate of chemical oxygen demand (COD). Results show that when the freezing temperature ... Autori: Yingjie Dai ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27845
PRECONCENTRATION OF METHYLENE BLUE WASTEWATER USING THE LAYER CRYSTALLIZATION TECHNOLOGY
Environmental Engineering and Management Journal › Vol. 18 › Nr. 1 This study was carried out to determine the feasibility of applying a freeze-concentration technique to purify wastewater polluted
with dye, such as methylene blue (MB) using a stationary wastewater vessel. In this study, we investigated the impact of freezing
temperature, initial MB wastewater concentration and vessel depth upon the removal ratio of MB. Results showed that when the
freezing temperature was decreased (from –5 °C to –15 °C), the freezing rate increased. The... Autori: Yingjie Dai ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27878
COPPER(II) BIOSORPTION CHARACTERISTICS OF LYOPHILIZED AND THERMALLY TREATED Pseudomonas CELLS
Environmental Engineering and Management Journal › Vol. 18 › Nr. 2 Biosorption of copper(II) by lyophilized and thermally treated bacterial biomass of Pseudomonas aeruginosa PAO1 and
Pseudomonas fluorescens BME in aqueous suspension was studied. The cell surface properties were characterized and the
experimental conditions, e.g., pH, adsorption time, and initial metal concentration were optimized for efficient biosorption. The
surface charge was negative at pH above 2.5 for P. aeruginosa, and above pH 4 for P. fluorescens. The highest copper(II) uptake
was ... Autori: Anikó Kőnig-Péter ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27917
SEASONAL VARIATION OF PHYSICO-CHEMICAL PARAMETERS IN THE DRINKING WATER SUPPLY NETWORK OF SATU MARE CITY, NW ROMANIA
Environmental Engineering and Management Journal › Vol. 18 › Nr. 3 We assessed the variability of the main physico-chemical parameters of drinking water: oxidability, turbidity, conductivity, water
hardness, free chlorine concentration, chlorides and nitrates across the four seasons (Spring, Summer, Autumn of 2013 and Winter
of 2014). We collected data from several points in the supply network of Satu Mare city, NW of Romania, where the source of
drinking water is groundwater.
The results revealed significant higher average values in spring for some of the ... Autori: Thomas Dippong ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27928
COMPUTATIONAL SIMULATION MODEL FOR DYE ADSORPTION IN NANO TIO2 FILM FOR THE APPLICATIONS IN DYE SENSITIZED SOLAR CELLS
Environmental Engineering and Management Journal › Vol. 18 › Nr. 3 The theoretical and computational studies of dye sensitized solar cells (DSSCs) can contribute to a deeper understanding of these
types of solar cells. The DSSCs are the novel design of solar cells which could be used as power producing windows or skylights.
They represent a particular promising approach to a direct conversion of sunlight into electrical energy at low cost and with high
efficiency. The light adsorption occurs in dye molecules adsorbed on a highly porous structure of TiO2 film... Autori: Nnditshedzeni Eric Maluta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27932
REMOVAL OF NH+ 4-N FROM AQUEOUS SOLUTION BY CERAMSITE COATED WITH Mg(OH)2 COMBINED WITH AIR STRIPPING
Environmental Engineering and Management Journal › Vol. 18 › Nr. 3 Removal of excessive ammonium nitrogen (NH+4-N) from aqueous solution has been of considerable concern for several decades.
It can be removed by air stripping, a necessary prerequisite is adding enough alkali. This study presented the first attempt to
investigate the potential use of ceramsite coated with magnesium hydroxide (CCMH) on the effectiveness of NH+4-N removal
coupled with air stripping at ambient temperature without alkali addition. The results showed that the CCMH coupled with air... Autori: Tianpeng Li ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27940
Environmental engineering and Management Journal No. 3
› Vol. 14 › Nr. 4 • ENVIRONMENTAL CHANGES IN NORTH-EASTERN ROMANIA A TRIGGER FACTOR FOR LYME DISEASE
• HYDROGEOCHEMISTRY AND ENVIRONMENTAL ISOTOPE COMPOSITIONS AND THEIR EVOLUTION IN GEOTHERMAL GROUNDWATER IN YIZHANG, HUNAN PROVINCE, CHINA
• CONSTRUCTION OF A BIOGAS HEAT STORAGE GREENHOUSE ECOSYSTEM UNDER THE CONTEXT OF WATER POLLUTION RESULTING FROM LIVESTOCK BREEDING
• ENVIRONMENTAL NOISE: HEALTH AND POLICY - AN UP TO DATE MINIREVIEW &nb... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27946
Environmental engineering and Management Journal No. 3
› Vol. 14 › Nr. 4 • ENVIRONMENTAL CHANGES IN NORTH-EASTERN ROMANIA A TRIGGER FACTOR FOR LYME DISEASE
• HYDROGEOCHEMISTRY AND ENVIRONMENTAL ISOTOPE COMPOSITIONS AND THEIR EVOLUTION IN GEOTHERMAL GROUNDWATER IN YIZHANG, HUNAN PROVINCE, CHINA
• CONSTRUCTION OF A BIOGAS HEAT STORAGE GREENHOUSE ECOSYSTEM UNDER THE CONTEXT OF WATER POLLUTION RESULTING FROM LIVESTOCK BREEDING
• ENVIRONMENTAL NOISE: HEALTH AND POLICY - AN UP TO DATE MINIREVIEW &nb... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27947
MODELLING THE SOURCE TERM FOR POLLUTANTS GENERATED FROM GALVANIC CELLS
Environmental Engineering and Management Journal › Vol. 18 › Nr. 4 Being able to estimate the quantity of pollutants that can be spread in the environment is a factor of paramount importance in the
industrial panorama. In order to accomplish such aim, a crucial step is the estimation of the so-called source term, that is the rate of
generation (or release) of a substance in a generic process. A proper estimation requires to consider both the machinery and the unit
operations present into the analysed system. For such reasons, ad hoc considerations and models... Autori: Marco Barozzi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27964
RESEARCH ON AQUATIC POLLUTION LEVEL OF MALEIA RIVER BY SIMULATION IN COMPUTATIONAL FLUID DYNAMICS
Environmental Engineering and Management Journal › Vol. 18 › Nr. 4 Watercourses that transit rural / urban areas are susceptible to the phenomenon of aquatic pollution due to various types of polluting
species. The important issues of river pollution and of polluting species dispersion, require an approach with predictive tools (models
for transport of polluting species) which can evaluate the performance of depollution measures/actions to reduce pollution and to
take optimal management decisions. Thus, from January 2017 to May 2017, a monitoring investigati... Autori: Lorand Toth ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27967
Environmental engineering and Management Journal No. 3
› Vol. 14 › Nr. 6 • ENVIRONMENTAL CHANGES IN NORTH-EASTERN ROMANIA A TRIGGER FACTOR FOR LYME DISEASE
• HYDROGEOCHEMISTRY AND ENVIRONMENTAL ISOTOPE COMPOSITIONS AND THEIR EVOLUTION IN GEOTHERMAL GROUNDWATER IN YIZHANG, HUNAN PROVINCE, CHINA
• CONSTRUCTION OF A BIOGAS HEAT STORAGE GREENHOUSE ECOSYSTEM UNDER THE CONTEXT OF WATER POLLUTION RESULTING FROM LIVESTOCK BREEDING
• ENVIRONMENTAL NOISE: HEALTH AND POLICY - AN UP TO DATE MINIREVIEW &nb... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27968
A POTENTIAL ALGAECIDE FROM THE PRUNINGWASTES OF GRAPE (VITIS VINIFERA) - STEMS AND LEAVES
Environmental Engineering and Management Journal › Vol. 17 › Nr. 12 A series of water quality and ecological problems are caused by algal blooms, and natural allelochemicals are considered as the source of algaecides due to their friendly advantages to environment. It has been reported that abundance of secondary metabolites are found in grape plants, and the extracts from the plant exhibit antioxidant, antibacterial and antifungal capacities. In order to reveal the anti-algal activity of grape pruning wastes and promote their usage, we analyzed the composition ... Autori: Zhaojiang Zuo ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27971
IMPACTS OF FREEZING-THAWING AND WETTING-DRYING CYCLES ON A SILT STABILIZED BY LIME AND WASTE SILICA
Environmental Engineering and Management Journal › Vol. 17 › Nr. 12 The main objective of this research is to investigate the effects of lime and waste silica fume additive on a silt and its utilization on railway subgrades stabilization. For this purpose, lime and waste silica fume were added to the silty soil in different contents at the soil optimum moisture; then the California Bearing Ratio (CBR) tests were conducted on the soil samples to estimate the favorable mixture design. At the next step, a selected sample was chosen to be exposed to wetting–dr... Autori: Reza Ziaie Moayed ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27972
EQUILIBRIUM AND KINETIC STUDIES OF METHYL ORANGE ADSORPTION ONTO CHEMICALLY TREATED OIL PALM TRUNK POWDER
Environmental Engineering and Management Journal › Vol. 17 › Nr. 12 In the present work, acid treated natural oil palm trunk powder (OPTP) has been utilized as novel adsorbents for the removal of methyl orange (MO) from aqueous solution. The batch method was employed to study the adsorption behavior of MO which was subsequently determined by UV/Visible spectrophotometer. The adsorption characteristics and operational parameters were determined by monitoring different parameters such as pH, contact time, dye concentration and temperature. The acid treated OPTP an... Autori: Akil Ahmad ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27975
EFFECTS OF ENVIRONMENTAL FACTORS ON THE BIOMASS OF BENTHIC DIATOM IN RIVERS
Environmental Engineering and Management Journal › Vol. 18 › Nr. 5 This paper aims to disclose the quantitative relationship between benthic diatom biomass in natural rivers and environmental factors.
For this purpose, the author selected seven natural rivers in the basin of Minjiang River as the objects. First, the samples of benthic
diatoms and the environmental factors were collected from 14 different sampling sites of five rivers and the diatom density and
Chlorophyll a (Chl a) content were selected to characterize the diatom biomass. Then, the number of... Autori: Baichuan Zhang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28001
PHOTOAUTOTROPHIC PRODUCTION OF POLY-Β-HYDROXYBUTYRATE (PHB) FROM CYANOBACTERIA: NITRATE EFFECTS AND SCREENING OF STRAINS
Environmental Engineering and Management Journal › Vol. 18 › Nr. 6 The polyhydroxybutyrate (PHB) production by photoautotrophic cultures is a potential eco-sustainable process to produce
bioplastics. The biosynthesis of PHB by cyanobacteria meets a twofold target: the use of CO2 as feedstock alternative to the fossil
resource used in the conventional processes; the contribution to the reduction of the CO2 concentration in the atmosphere. This
contribution reports results of a study regarding the optimal growth conditions for cyanobacteria to produce PHB unde... Autori: Roberta Carpine ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28021
DESIGN AND ENVIRONMENTAL ASSESSMENT OF BIOPLASTICS FROM Hermetia illucens prepupae PROTEINS
Environmental Engineering and Management Journal › Vol. 18 › Nr. 10 Proteins from Hermetia illucens (or Black Soldier Fly, BSF) have been employed in this study as possible source for bioplastic formulation. This type of bioplastic can replace the actual materials employed in agriculture, avoiding the critical issues concerning the soil pollution due to conventional plastic end-life. Different plasticizing agents (glycerol and polyethylene glycol) have been tested and the ability to generate a homogenous film, through wet casting, has been evaluated. Characteriz... Autori: Silvia Barbi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28074
CORRELATION BETWEEN AERATION AND ERGOSTEROL PRODUCTION BY YEASTS
Environmental Engineering and Management Journal › Vol. 18 › Nr. 12 The present study represents an extension of ergosterol production by Saccharomyces cerevisiae fermentation processes using oxygen-vector by establishing the influence of the analyzed main factors, such as aeration efficiency and hydrocarbon concentration. The study has been developed for batch and fed-batch fermentation systems and has been focused on the variation of ergosterol content inside the yeast cells during the fermentation cycle in correlation with hydrocarbon volumetric fraction, COV... Autori: Corina Ciobanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28130
MODELING OF A RECTANGULAR CHANNEL MONOLITH REACTOR FOR SORPTION-ENHANCED WATER-GAS SHIFT
Environmental Engineering and Management Journal › Vol. 19 › Nr. 2 As CO2 concentration levels in the atmosphere are steadily reaching a point of no return, it is paramount that actions are taken towards mitigating emissions by improving the efficiency of existing processes. Sorption-enhanced water-gas shift (SEWGS) combines the water-gas shift reaction with in-situ adsorption of CO2 on potassium-promoted hydrotalcite (K-HTC). This enables a
direct conversion of syngas into separate hot streams of H2 at feed pressure and CO2 at regeneration pressure, making th... Autori: Vlad-Cristian Sandu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28149
PREPARATION OF NEW INORGANIC POLYMER FLOCCULANT AND ITS APPLICATION IN OILY SLUDGE
Environmental Engineering and Management Journal › Vol. 19 › Nr. 3 Sodium silicate, iron sulfate, magnesium sulfate, and zinc sulfate were used as the raw materials to prepare a new inorganic polymer flocculant, polysilicate ferric magnesium zinc (PSFMZ), using direct recombination. The effects of molar ratio of zinc to silicon, ratio of iron to magnesium, reaction temperature, and reaction time on deoiling rate were explored. The optimal synthesis conditions for the flocculant for the thermal-washing treatment of oily sludge were determined. Results showed tha... Autori: Lanlan Yu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28165
ANALYSIS OF THE EFFICIENCY OF WATER TREATMENT PROCESS WITH CHLORINE
Environmental Engineering and Management Journal › Vol. 19 › Nr. 8 The quality of drinking water can be kept under control through the protection of raw water sources and the permanent monitoring and control of the processes of treatment and distribution of drinking water. The dangers and risks faced by drinking water supply systems may arise from inside or outside the system. Water disinfection is the key element behind obtaining and maintaining quality. Chlorine is the most widely used disinfectant, due to its high efficiency. However, it has a major disadvan... Autori: Alice Iordache ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28254
FREEZING-THAWING BEHAVIOR OF CLAYEY SOILS REINFORCED WITH PINE TREE SAWDUST AND MARBLE DUST
Environmental Engineering and Management Journal › Vol. 19 › Nr. 12 In this study, the change of freeze-thaw test result of unconfined compressive strength of clayey soils reinforced with pine tree sawdust and marble dust was investigated. Mixtures containing 5%, 10% and 15% marble dust and 0.5%, 1% and 1.5% pine tree sawdust were compressed by standard Proctor test with optimum moisture content. After curing the mixture samples for 1, 7 and 28 days at a working room temperature of +21°C, they were subjected to the freeze-thaw test at -21°C, +21°C fo... Autori: Necmi Yarbasi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28342
ECO-FRIENDLY SYNTHESIS OF SILVER NANOPARTRICLES USING Gazania rigens AND EVALUATION OF ACTIVITIES
Environmental Engineering and Management Journal › Vol. 20 › Nr. 1 The present study describes the facile synthesis of silver nanoparticles (AgNPs) by green method using aqueous extract of Gazania rigens. The size, morphological, compositional and optical properties of silver nanoparticles were examined through X-ray diffraction (XRD), Energy Dispersive X-ray spectroscopy (EDX), Scanning Electron Microscope (SEM), and UV-Vis spectroscopy respectively. Ultraviolet-Visible spectra showed the absorbance band between 425–460 nm which indicated the synthesis o... Autori: Tayyaba Shahzadi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28349 |