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Rezultatele pentru heavy metals removalRezultate gasite: 776
Degradation of alcian blue 8 gx by heterogeneous and homogeneous photocatalytic processes
Environmental Engineering and Management Journal › Vol. 6 › Nr. 2 <!--[if !supportEmptyParas]--> The photocatalytic degradation of Alcian Blue 8 GX, a copper phthalocyanine cationic dye, has been investigated in aqueous solutions both in heterogeneous and homogeneous systems. Initial colour removal rates in different conditions were calculated in both cases. Influence of amounts of H2O2 and FeCl3 was studied and compared for the two photocatalytic systems. Finally, some conclusions regarding the efficiency of the two photocatalytic processes were es... Autori: Anca Florentina Caliman, Chrysanthi Berberidou, , Liliana Lazar, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25114
Removal of zinc (II) from aqueous solutions by romanian sphagnum peat moss
Environmental Engineering and Management Journal › Vol. 6 › Nr. 3 In recent years the removal of toxic substances especially heavy metals from water and wastewater by using of non-conventional low-cost sorbent (industrial wastes and some natural material including microorganisms, plant-derived materials, agricultural products and by-products, mineral oxides, clays) has received much attention. In this paper efficiency of Zn (II) removal from aqueous solutions by sorption onto Romanian sphagnum peat moss was studied in batch experiments involving process parame... Autori: Angelica Kicsi, , Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25126
Removal of persistent organic pollutants from textile wastewater by membrane processes
Environmental Engineering and Management Journal › Vol. 6 › Nr. 3 AbstractThe textile industry is a large water consumer. Stringent regulations of wastewater characteristics require the use of membrane processes for the removal of persistent organic pollutants (POPs) from textile wastewater prior to discharge or recycling of these effluents.This paper presents an overview of research related to the removal of persistent organic pollutants from textile industry by membrane processes, discussing also the correlations with actual pre-treatment and removal rates. ... Autori: , Corina - Petronela Musteret ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25127
Marine micro and macro algal species as biosorbents for heavy metals
Environmental Engineering and Management Journal › Vol. 6 › Nr. 3 AbstractThis paper reviews some practical aspects of the application of algal biomass for the biosorption of heavy metals from wastewater. The ability of different algal species to remove metals varies with algal group and morphology, with the speciation of specific metals and their competition with others in wastewater, and with environmental or process factors. The scattered literature on the uptake of heavy metals by both living and dead algal biomass - both macroalgae and immobilized microal... Autori: Loredana Branza, Maria Gavrilescu, Matthew J. Dring ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25133
Environmental problems of copper complex in Bor area
Environmental Engineering and Management Journal › Vol. 6 › Nr. 4 AbstractThe paper discusses some environmental problems caused by the presence of the copper mining and processing complex in the Bor area (Eastern Serbia). The Bor area is a serious hot spot in Serbia. Unsupervised operation of the mining company RTB Bor, without any protective measures, has led to extreme pollution of the Bor River, the Danube and underground waters, soil pollution with heavy metals, air-pollution with sulfur-dioxide etc. Recommendations are suggested as follows: a sustainable... Autori: Slavka Zeković ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25137
Wet hydrogen peroxide catalytic oxidation of parachlorophenol over clay based catalysts
Environmental Engineering and Management Journal › Vol. 6 › Nr. 5 This study presents an evaluation of the catalytic performances of Fe containing clay-based catalysts for the wet hydrogen peroxide catalytic oxidation (WHPCO) of 4-chlorophenol (4-CP) aqueous wastes. The catalysts were prepared by well-established techniques, their properties being determined by DRX, BET and chemical analysis techniques. All the tests were performed on a laboratory scale set-up. The ion-exchanged clays were the most active catalysts (100 % 4-CP and 84 % COD removal for Fe-Mt) b... Autori: , Cezar Catrinescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25157
Electrical properties of SnO2-Pt/Al2O3 in reduction atmosphere
Environmental Engineering and Management Journal › Vol. 6 › Nr. 5 AbstractCatalysts having mobile electrons in bulk such as metals and semiconductors are good solid materials for red/ox type of reaction (oxidation) and can be effectively used in gas sensing devices as well. The aims of this work were: (i) to investigate the surface behavior of Pt(0.28%)/Al2O3 and SnO2(2.94%)-Pt(0.28%)/Al2O3 samples in inert atmosphere (He) and in reducing atmosphere containing helium-cyclopropane gas mixture under ambient condition (i.e., room temperature, atmospheric pressure... Autori: , Cornel Munteanu, Jozsef Kovacs, Mariana Scurtu, Monica Caldararu, Tatiana Yuzhakova ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25146
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. 1 Nr. 1
Environmental Engineering and Management Journal › Vol. 1 › Nr. 1 Contain all the articles from this issue Risk assessment and management - tools for sustainable developmentMaria GavrilescuSustainable alternatives for petrochemical wastewater managementCarmen Teodosiu, Lidy E. Fratila-ApachiteiThe role and the place of oxidant reagents in wastewater treatmentIoan RoscaEnvironmental Psychology, a new direction in the psychological fieldCarmen Catalina IoanChanging concepts of high performance to socially sustainable organizationCostache Rusu, Nerida DavisU... Autori: Abdelnaser Omran ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25166
Environmental Engineering and Management Journal, Vol. 1 Nr. 2
Environmental Engineering and Management Journal › Vol. 1 › Nr. 2 Contain all the articles from this issueICEEM /01 PLENARY CONFERENCETen years of Environmental Engineering and Management education and research at the Technical University of IasiMatei Macoveanu, Carmen Teodosiu ICEEM/01 - Environmental Engineering SectionRemoval of nitrogen oxides from Diesel exhaust: Laboratory studies for development of an SCR-catalyst-system using solid urea as reducing agentWerner Weisweiler High temperature desulphurization of hydrogen sulphide containing ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25167
Environmental Engineering and Management Journal, Vol. 1 Nr. 4
Environmental Engineering and Management Journal › Vol. 1 › Nr. 4 Contain all the articles from this issue:ICEEM/01 -- Environmental Management Section Corporate environmental competence: A concept for characterising and assessing the environmental practice in companies and product chainsMichael S?¸gaard J?¸rgensen, Marianne Forman Life cycle assessment of some alternatives for the supply of thermal energy in the municipality of Iasi (Romania).Nicolae Peiu Management options for the industrial and municipal wastes in the city of Iasi Carmen Teod... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25169
Environmental Engineering and Management Journal, Vol. 2 Nr. 1
Environmental Engineering and Management Journal › Vol. 2 › Nr. 1 Contain all the articles from this issueEnvironmental analysis by capillary electrophoresis. Atmospheric samplesCamelia Draghici, Gheorghe Coman, Mihaela Sica,Dana Perniu, Mihaela Badea The ecological farms - A solution for sustainable agriculture. II. Position and perspectives of the ecofarms in the frame of the productive agricultural system Stela Axinte, Alina Stanciu, Lorica Axinte The extraction and clean up of organochlorine pesticides and PCB's from water using solid phase ex... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25170
Environmental Engineering and Management Journal, Vol. 2 Nr. 2
Environmental Engineering and Management Journal › Vol. 2 › Nr. 2 Contain all the articles from this issueEditorialEstablishing effluent discharge limits - have we got it right?Yusuf Chisti Full papersSurvey on the treatment of gaseous streams containing volatile organic compoundsOana Penciu, Maria GavrilescuEU environmental policy for industrial pollution control. IPPC DirectiveElena Bobu Environmental monitoring Antonius A.F. KettrupProcess The sonochemical degradationof cyanide ions using atmospheric oxygen as oxidizing agentIoan Iordache, Mircea Teodor Nec... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25171
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. 3 Nr. 3 (I)
Environmental Engineering and Management Journal › Vol. 3 › Nr. 3 Contain all the articles from this issueICEEM /02 PLENARY SESSION:"Environmental Engineering and Management in the Context of Sustainable Development"Green technology foresight of high technology: Hype of potentials - The challenges from nanotechnology, Biotechnology and ICTMichael S?¸gaard J?¸rgensenIntrinsic properties of noble metals in catalytic selective reduction of NO by propene in lean burn conditionsAnne Giroir-Fendler, Helleh Saadallah, Adela HaletaICEEM/02 - ENVIRONMENTAL ENGINEERING ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25178
Environmental Engineering and Management Journal, Vol. 3 Nr. 3 (II)
Environmental Engineering and Management Journal › Vol. 3 › Nr. 3 Contain all the articles from this issueICEEM/02 - ENVIRONMENTAL ENGINEERING SECTION"Treatment Technologies for Gaseous Fluxes"Surface chemistry studies on molybdenaâalumina catalystTatiana Yuzhakova, ?kos R?Šdey, Endre Domokos, J??zsef Kov??cs, Monica Caldararu, Cristian Hornoiu, Mariana Carata, G.Postole, Cornel Munteanu, Larisa Strukova, Jozse FazakasHebicidal behaviour of a new N,N'- biquaternary salt of 4,4'- bipyridineServilia Oancea, Marinela Irimia, Gabriela Carja, Anton Airinei, Nicu... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25189
Modelling and simulation of heavy metals transport in water and sediments
Environmental Engineering and Management Journal › Vol. 6 › Nr. 2 AbstractHeavy metals can be transported by rivers which flow through areas with industrial pollution, both as metal in solution and metal adsorbed to suspended solids. They can settle in lakes and accumulate in the sediment, exhibiting significant effects on wildlife and humans if they enter into the food chain.In this work, heavy metals transport and sedimentation is simulated based on an analytical model proposed in literature, considering the material balance and complementary equations, unde... Autori: Camelia Beţianu, Florina Ungureanu, Loredana Branza, Lucian Vasile Pavel, Maria Gavrilescu, Simona Pintilie ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25197
Environmental Engineering and Management Journal, Vol. 6 Nr. 3
Environmental Engineering and Management Journal › Vol. 6 › Nr. 3 Include urmatoarele articole:â? Removal of persistent organic pollutants from textile wastewater by membrane processesâ? Sustainability evaluation of an urban residential settlementâ? Removal of zinc (II) from aqueous solutions by romanian sphagnum peat mossâ? Development trends of cold plasma reactors in the global context of carbon emission reductionâ? Assessing the potential of wind power in Romania within Kyoto targetsâ? Research on the impact induced in the environment by milk process... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25198
Environmental Engineering and Management Journal, Vol. 9 Nr. 1
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 ? Kinetics considerations concerning the oxidative degradation by photo-fenton process of some antibiotics
? Catalytic wet hydrogen peroxide oxidation of 4-chlorophenol over iron-exchanged clays
? Researches on the negative effects assessment (slugging, clogging, ash deposits) developed at the biomass-coal co-firing
? Contribution to the study of the environmental heritage of a former chemical plant
? Impact of chemicals on derivatives with important therapeutic activity in C... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25376
Environmental Engineering and Management Journal, Vol. 6 Nr. 6
Environmental Engineering and Management Journal › Vol. 6 › Nr. 6 Iinclude urmatoarele articole:â? Phenol degradation in water through a heterogeneous photo-fenton processâ? Study concerning the influence of oxidizing agents on heterogeneous photocatalytic degradation of persistent organic pollutantsâ? Nonmarket valuation of acequias: Stakeholder analysisâ? Metals concentration in soils adjacent to waste depositsâ? Polyelectrolyte - surfactant complexesâ? Modelling of sorption equilibrium of Cr(vi) on isomorphic substituted Mg/Zn-Al - type hydrotalcitesâ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25206
Environmental Engineering and Management Journal, Vol. 7 Nr. 1
Environmental Engineering and Management Journal › Vol. 7 › Nr. 1 Include urmatoarele articole:â? "Waste not, want not" a study of household attitude toward recycling of solid wastesâ? A kinetic model for the crystal violet mineralization in water by the electro- fenton processâ? Development of a coagulation/flocculation predictive model for turbidity removal from tehran water treatment plantsâ? Removal of cadmium (II) from aqueous solutions by sphagnum moss peat: Equilibrium studyâ? Environmental sustainability based on fuzzy modelsâ? Impact of dust emi... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25207
Environmental Engineering and Management Journal, Vol. 7 Nr. 2
Environmental Engineering and Management Journal › Vol. 7 › Nr. 2 Include urmatoarele articole:â? Synthesis of Ferrierite/ZSM-35 type zeolite with ethylenediamine as templateâ? Recovery of p-hydroxybenzoic acid from wastewaters by reactive extraction 1. Extraction mechanism and influencing factorsâ? Relationships between metals extent and cytological characteristics at Prunus persica L. pollenâ? Smoke Emissions From Diesel Vehicles: A Case Studyâ? Carbon dioxide generation - implications for romanian pulp and paper industry â? Enhanced decolorization of ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25208
Environmental Engineering and Management Journal, Vol. 7 Nr. 3
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 Include urmatoarele articole:â? Cost sensitivity analysis by Monte Carlo simulationâ? Mathematical modeling of gas drying by adsorptionâ? Methyl isobutyl ketone combustion over Pt/Al2O3 catalystâ? Distribution of oxygen transfer rate in stirred bioreactors with simulated brothsâ? Unsteady heat transfer inside an elliptic cylinderâ? Triphasic external-loop airlift reactors. Hydrodynamic and dispersion studiesâ? Sustainable combined utilization of renewable forest resources and coal in Roma... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25209
Metals concentration in soils adjacent to waste deposits
Environmental Engineering and Management Journal › Vol. 6 › Nr. 6 AbstractThe paper presents original results concerning concentrations of eight heavy metals in soils adjacent to two improperly built municipal waste deposits located in Eforie Sud and Techirghiol, Constanta County, Romania. Measurements have been done on surface and depth soils, during April-October 2006. The applied analytical technique for metal determination was flame atomic absorption spectrometry (FAAS). The mean measured values ranged as follows (in mg/kg dry weight): Cd: 0.09 - 0.15; Co:... Autori: , Elisabeta Chirilă, Narcisa Elena Ilie ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25213
Comparative study of some essential elements in different types of vegetables and fruits
Environmental Engineering and Management Journal › Vol. 6 › Nr. 6 AbstractSome industry activities in the area of Constanta (Romania) contribute to the polluting of the environment with heavy metals. In order to estimate the pollution level and the danger created by this phenomenon, some analyses are required with regard to determining the concentration of the pollutant metals in plants samples. The investigated metals were determined by flame atomic absorbtion spectrometry in different types of vegetables and fruits, after the chemical mineralization of the s... Autori: Alina Soceanu, , Simona Dobrinas, Vasile Magearu, Viorica Popescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25227
Development of a coagulation/flocculation predictive model for turbidity removal from tehran water treatment plants
Environmental Engineering and Management Journal › Vol. 7 › Nr. 1 AbstractAluminum and ferric salts are widely used as coagulants in water and wastewater treatment. They are effective in removing a broad range of impurities from water, including colloidal particles and dissolved organic substances. As well as traditional additives, such as aluminum sulphate ("alum") and ferric chloride, other products containing prehydrolized metal ions such as polyaluminum chlorides are now commonly used. The aim of this study was to develop a model for coagulation/flocculati... Autori: Avid Banihashemi, Manouchehr Nikazar, , Reza Maknoon ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25230
Removal of cadmium (II) from aqueous solutions by sphagnum moss peat: Equilibrium study
Environmental Engineering and Management Journal › Vol. 7 › Nr. 1 AbstractCadmium is listed by US-EPA as one of priority pollutant and as a known carcinogen, and therefore its removal from wastewaters of various industrial processes is a very important environmental problem. The paper analyzes the effectiveness of a Romanian sphagnum moss peat as available and cheaper sorbent in removal of Cd (II) from aqueous solutions. Batch sorption experiments were carried out in order to establish the influence of solution pH, peat dose, contact time and initial cadmium c... Autori: Catalin Balan, , Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25231
Impact of dust emission on plant vegetation in the vicinity of cement plant
Environmental Engineering and Management Journal › Vol. 7 › Nr. 1 AbstractEnvironment is a major issue which confronts industry and business in today's world on daily basis. Different industrial activities are degrading various environmental components like water, air, soil and plant vegetation. Cement industry is one of the 17 most polluting industries listed by the Central Pollution Control Board (CPCB). The Jaypee Rewa Cement Cement industry, Rewa, Madhaya Pradesh is located between 24o 33' North longitude and 81o 10' east latitude and is situated at Jay Pr... Autori: Baby Sunisha, Nagpure Ajay Singh, Shrivastava Preeti, Shukla Ravindra Nath, Shukla Sudheer Kumar, Singh Deepali, Vivek Kumar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25233
Polyelectrolyte - surfactant complexes used in the coagulation floculation processes
Environmental Engineering and Management Journal › Vol. 7 › Nr. 1 AbstractThe removal of formasine fines particles from water by precipitation with polyelectrolyte and surfactant complex of Polyacrylamide (industrial product Praestol 611 made by Degussa) and Sodium Lauryl Sulphate (SLS) was experimentally studied. Calcium oxide was added to initiate precipitation of the polyelectrolyte complex together with the fines particles. The experiments were carried out with complexes having the surfactants concentration higher then the critical aggregation concentratio... Autori: Cristina Costache, Gabriel Dabija, Mihaela Mihai ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25238
Assessment of water pollution potential by acide drainage
Environmental Engineering and Management Journal › Vol. 7 › Nr. 1 AbstractAn assessment of acide drainage forming potential for a mining waste material resulted in a former mine of nonferrous and precious metals ore has been made. The waste material has the following contents: 2,20?ˇ2,28% sulphide sulphur, 2,53?ˇ2,58% Fe, 0,07% Cu, 0,05% Zn, 0,36?ˇ0,40% Pb, 0,008?ˇ0,013% Ca and 3,85?ˇ7,97% sulphate. Bacterial leaching tests in percolating columns during 380 days have been made. The leaching liquor has been recirculated at a liquid:solid ratio of 1L:1kg. After ... Autori: Vasile Oros ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25239
Surfactant - modified natural zeolites for environmental applications in water purification
Environmental Engineering and Management Journal › Vol. 7 › Nr. 2 AbstractThis paper presents an overview of research related to use of surfactant modified natural zeolites (SMZ) in water and wastewater treatment. The most common natural zeolite, widely used as starting material is clinoptilolite, but other natural zeolites have also been used (chabasite, heulandite, mordenite). In the first part, the preparation methods and the influence of process parameters on the final product properties is reviewed. The discussion is focused on the influence of surfactant... Autori: , Cezar Catrinescu, Roxana Elena Apreutesei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25241
Relationships between metals extent and cytological characteristics at Prunus persica L. pollen
Environmental Engineering and Management Journal › Vol. 7 › Nr. 2 The heavy metal concentrations exceeding the standard admissibility, determine modifications of some cytological parameters. Therefore, by this paper, there were determined the concentrations of copper, iron, manganese and zinc from Prunus persica L. pollen grains (Research-Development Fruitgrowing Station, Constantza, Romania) using wet digestion followed by flame atomic absorption spectrometry (FAAS). Then, the main cytological parameters (such as citological viability and germination capacity... Autori: Dan Mandalopol, Elena Doroftei, Manuela Rotaru-Stancic, Simona Dobrinas ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25249
Polyacrylonitrile ultrafiltration membranes for recycling of refinery and petrochemical effluents
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 AbstractHollow fiber polyacrylonitrile membranes with three different MWCOs (i.e. 6, 13, 50 kDa) have been tested for dead-end ultrafiltration of a combined refinery and petrochemical secondary effluent. The effluent treatment envisaged further recycling as cooling water make-up following an ultrafiltration/reverse osmosis advanced treatment scheme. Criteria for ultrafiltration evaluation included flux restoration by backwashing, turbidity removal efficiency and water recovery. The membranes cou... Autori: , Lidy E. Fratila-Apachitei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25258
Quantification of impact and risk induced in surface water by heavy metals: Case study - Bahlui River Iasi
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 AbstractThe purpose of this paper was to quantify the environmental impact and risk applying a new integrated method designed as a soft SAB. The evaluation of impact and risk induced in environment was performed for surface waters (Bahlui River, IaÂ?i), considering the presence of some minerals and heavy metals in surface water in high concentrations. The new method for integrated environmental impact and risk assessment that considers the pollutants concentration levels in surface water w... Autori: Brindusa Robu, Dumitru Bulgariu, Laura Bulgariu, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25262
Study on new complex compounds of Ti(IV) and Zr(IV) in aqueous solutions: synthesis, stability and application in cleaner technologies of natural leather
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 AbstractIn this paper, the study of synthesis and stability in aqueous solutions of new coordination compounds of Ti(IV) and Zr(IV) with ligand N-hydroxy-succinimide is presented. The salts: TiOSO4¡2H2O and ZrOCl2¡8H2O used for obtaining the studied coordination complexes, can derive from recycling metallic residues resulted in mechanical technologies applied for titanium and zirconium in S.C. ZIROM S.A. Giurgiu.The new complexes were synthesized in aqueous solutions and stability were study u... Autori: Adrian Cailean, Daniel Sutiman, Doina Sibiescu, Gabriela Apostolescu, Ioan Roşca, Marian Crudu, Mihaela Vizitiu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25265
Environmental Engineering and Management Journal, Vol. 9 Nr. 3
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 ? Denitrifying activity of activated sludge in suspension and in biofilm? Denitrifying potential of an activated sludge derived consortium? Biosorption of hexavalent chromium based on modified Y zeolites obtained by alkali-treatment? Identifying anaerobic digestion models using simultaneous batch experiments? Olive mill wastewater as a renewable resource? Influence of innoculum acclimation in the biodegradation rate and estimated biodegradbility of cow manure, food waste and oil? Studies on the ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25378
Advanced Cd2+ removal on dispersed TioO2-fly ash
Environmental Engineering and Management Journal › Vol. 7 › Nr. 4 AbstractThe paper proposes a suitable solution for a one step treatment process of the wastewaters resulted from the textile industry, using a mixture of anatase and modified fly ash. The dyes photo-degradation on TiO2 anatase is well known. The use of fly ash in advanced wastewater treatment, for heavy metal adsorption, represents an environmental friendly process, efficient if the fly ash surface charge is controlled by solubilisation/reprecipitation. The first step in implementing the single ... Autori: Anca Duta, Maria Visa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25292
Biological phosphorus removal in a high performance single reactor
Environmental Engineering and Management Journal › Vol. 7 › Nr. 4 AbstractThe possibility of biological phosphorus removal (BPR) was studied using a lab-scale single reactor the same as SHARON process. Up to now, there has been no investigation of the feasibility of SHARON process for the purpose of phosphate removal. The optimal operation conditions were established to obtain highest removal rates. Under the experimental conditions, the phosphorus concentration dropped from an influent concentration of 1000 mg/L to levels around 0.1 mg/L or less. It was concl... Autori: Abbas Rezaee, Hatam Godini, Masod Solimani, Nayera Nami ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25293
Determination of heavy metals in extracts and macerates from garden flowers
Environmental Engineering and Management Journal › Vol. 7 › Nr. 4 AbstractThe aim of this work was to study the content of Fe, Mn, Zn and Pb in the mixtures which contain volatile oil between othercomponents, obtained after the Soxhlet extraction or maceration of the samples (different organs of garden flowers - blue hyacinthand chrysanthemum). The blue hyacinth is a bulbous perennial herb in the Lilliaceae family, grown for its showy and fragrantspringtime flower display. Garden chrysanthemums are tender perennials in the Asteraceae family in double-flowered ... Autori: , Simona Dobrinas, Viorica Popescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25294
Removal of nickel from aqueous solution by Nordmann FIR (ABIES Nordmanniana (STEV.) SPACH SUBSP. Nordmanniana) cones
Environmental Engineering and Management Journal › Vol. 7 › Nr. 4 AbstractBiosorption an alternative process is the uptake of heavy metals from aqueous solutions by biological materials. The biosorption of nickel ions from aqueous solution was investigated by Nordmann fir (Abies nordmanniana (Stev.) Spach. subsp. nordmanniana) in a batch adsorption system as a function of pH, initial metal concentration, biomass dosage, contact time. The data showed that the maximum pH for efficient sorption of Ni(II) was 6.5. At the optimal conditions, Ni(II) ion biosorption ... Autori: Handan Ucun, Ozkan Aksakal, Yusuf Kaya ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25295
Environmental Engineering and Management Journal, Vol. 7 Nr. 4
Environmental Engineering and Management Journal › Vol. 7 › Nr. 4 Include urmatoarele articole:â? Removal of nickel from aqueous solution by Nordmann FIR (ABIES Nordmanniana (STEV.) SPACH SUBSP. Nordmanniana) conesâ? Determination of heavy metals in extracts and macerates from garden flowersâ? Biological phosphorus removal in a high performance single reactor â? Advanced Cd2+ removal on dispersed TioO2-fly ash â? Remediation techniques for contaminated soilsâ? Separation of uranium(vi) from soils by extraction in aqueous PEG (1550) - Na2SO4 - Na2CO3 two-... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25296
Studies on transfer and bioaccumulation of heavy metals from soil into lettuce
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 AbstractThis paper presents the connection between the heavy metals concentration in soil and their bioaccumulation in lettuce. Lettuce is a very good bioaccumulator of heavy metals and nutrients. In general, plants manifest a certain reaction to increasing the toxic metal concentrations in soil which they are cultivated on. The differences depend on plants sensitivity, and time exposure intensity (concentration of heavy metals, cultivation length, etc.), presence or absence of nutrients and oth... Autori: Ana-Irina Smical, Elena Pop, Jozsef Juhasz, Vasile Hotea, Vasile Oros ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25299
Phytoremediation: the application of vermicompost to remove zinc, cadmium, copper, nickel and lead by sunflower plant
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 AbstractA greenhouse experiment was conducted to determine the phytotoxic effect of heavy metals such as Cd, Cu, Ni, Pb and Zn on the growth of Sunflower (Helianthus annuus): on the seed germination, root/shoot growth and uptake of metals in soil-vermicompost media. The selected metals were dosed at various concentrations ranging from 0, 5, 10, 20, 40 and 50 ppm separately in soil - vermicompost media (3:1) in pot experiment. The seed germination, root and shoot growth were found significantly a... Autori: Chhotu D. Jadia, Madhusudan H. Fulekar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25306
Environmental Engineering and Management Journal, Vol. 7 Nr. 5
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 Include urmatoarele articole:â? Biomass - A source of chemicals and energy for sustainable development â? Equilibrium study of Pb(II) and Hg(II) sorption from aqueous solutions by moss peatâ? Wood-based epoxy resins and the ramie fiber reinforced compositesâ? Studies on the interaction between birch veneer and compounds with biocide potential actionâ? Effect of methanogenic inhibitors, inocula type, and temperature on biohydrogen production from food componentsâ? Energy from biomass in pul... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25313
Studies on the influence of irrigation on a calcic chernozem in the eastern region of Romania
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractThe Romanian strategy in the field of irrigations for the years of 2008-2011 consists of the modernization of the existing works covering about 3.1 mil. ha, while for the years of 2011-2025 the irrigation of additional area of 0.9 mil. ha is expected. In the climate conditions of Romania, the irrigation has a complementary character over the precipitations. Because of this reason, a correct regime of irrigations needs a very good correlation between watering and precipitations in order t... Autori: Dorin Cotiusca Zauca, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25317
Overview of ex situ decontamination techniques for soil cleanup
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractThe paper is a short review on the soil decontamination applying ex-situ techniques. Some sources and pathways of soil contamination are discussed. It was revealed that available techniques for soil decontamination can be divided in two parts, depending on where the action have place: in-situ or ex-situ. Also, depending on the nature of the process, these techniques can be biological, physical-chemical and thermal. In order to decontaminate soils properly, the primary contaminants ... Autori: Lucian Vasile Pavel, Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25318
Studies regarding surface water treatment using a microfiltration-ultrafiltration pilot plant
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractIn this paper the results of surface water treatment process for drinking purpose are presented, using the microfiltrationultrafiltration process. The experimental studies were carried out using a microfiltration-ultrafiltration pilot plant and raw water from Bega River, Timisoara as feed. To assess process performance, the water quality, e.g., turbidity, total coliforms and hardness parameters were determined for two different operating regimes subjected to filtration time. A good effic... Autori: Camelia Podaru, Cristian Danielescu, Florica Manea, Georgeta Burtica, Ilie Vlaicu, Viorel Patroescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25332
Studies on equipment corrosion in catalytic reformation of C1 - C5 fraction
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractObservations and data regarding the intense corrosion and deposit phenomena of the carbon steel tube bundle of the heat exchanger are presented. The bundle ensures the cooling of the light fraction C1 - C5 from the top of the distillation column which carries out the removal of pentane and smaller derivates into the RC equipment. Chemical and mineralogical analyses confirm the aggressive action of the fluids flowing through the exchanger. Tests have been done in order to replace the carb... Autori: Ana-Daniela Georgescu, Lucian Georgescu, Maria Apostolescu, Nicolae Apostolescu, Ovidiu Georgescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25333
Removal of acid red 398 dye from aqueous solutions by coagulation/flocculation process
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractThe removal of Acid Red 398 (AR398) dye from dye-containing solution using coagulation/flocculation process with polyaluminum chloride (PAC) and Alum was investigated. The effect of different parameters involving pH, dosage of coagulant, initial dye concentration, and bentonite as a natural coagulant aid was examined. According to the obtained results, the optimum pH, at which the maximum removal occurred, was about 4 and 5 for PAC and Alum, respectively. However, PAC performed efficient... Autori: Maryam Hasani Zonoozi, , Mokhtar Arami ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25335
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. 7 Nr. 6
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 Include urmatoarele articole:â? Composite membranes with cross-linked matrimid selective layer for gas separationâ? Determination of organic compounds from different types of coffee by Hplc and Gc-Ecd analysisâ? An integrated assessment of the suitability of domestic solar still as a viable safe water technology for Indiaâ? Investigations on the possibility of natural hemp fibers use for Zn(II) ions removal from wastewatersâ? Removal of acid red 398 dye from aqueous solutions by coagulation... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25340
Impact of human activities on the soil in Vaslui county
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractThe soil is a fundamental component of both urban and rural environment, the main reason behind the fact that the protection of soil and subsoil is a matter of national importance. By its position and characteristics, the soil is, in fact, the convergence area of all the pollutants, of which the most are airborne. The present paper, which presents the sources of heavy metals as well the impact of those on the soil from Vaslui county, is part of a series of papers published as preparation... Autori: Mihaela Budianu, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25343
Removal of some environmentally relevant heavy metals using low-cost natural sorbents
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 Abstract The sorption of metal ions from aqueous solution plays an important role in water pollution control and in recent years there has been considerable interest in the use of low-cost adsorbents. Many researchers have tried to exploit naturally occurring materials as low-cost adsorbents, for removing of heavy metals. In this article the removal performance of various low-cost adsorbents derived from agricultural waste or natural material is evaluate... Autori: Raluca Maria Hlihor, Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25379
Titanium dioxide extraction from paint sludge of automotive industry Case study: Paint sludge of Saipa paint shop
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractPaint sludge of automotive industry contains heavy metals and other toxic substances. Due to this matter, it has a high pollution potential. Incorrect disposal of paint sludge led to kinds of environmental pollution. Recycling and reusing of wastes can be one of the best solutions for decreasing of pollutant entrance to environment. The purpose of this study was to present a new method of extracting the main components of paint sludge, for determining concentration of elements in paint s... Autori: Azadeh Akhavan Bloorchian, Seyed Mostafa Khezri ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25346
An experimental three-stage hybrid constructed wetland system for removal of organics and nutrients from domestic wastewater
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractAn experimental three-stage subsurface flow constructed wetland system was investigated for the removal of nutrient and organic matter from primary-treated domestic wastewater. Built in the Turkey Scientific and Technical Research Council-Marmara Research Center, Gebze, Turkey (Istanbul), the system consisted of a vertical flow-gravel filtration in the first stage, a horizontalsubsurface flow bed vegetated with Iris in the second stage, and a vertical-subsurface flow bed vegetated Phragm... Autori: Bilal Tuncsiper ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25358
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. 2
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 Include urmatoarele articole:â? Environmental Engineering and Management Journal, Vol. 8 Nr. 2â? Bioengineering aspects of tissues culture bioreactors for medicine and environmental applicationsâ? Removal of bis (1-chloro-2-propyl) ether from wastewater using sonodegradation and biodegradationâ? A novel plasma reactor for toluene decomposition in contaminated air flowâ? Study of the copper (II) removal from aqueous solutions by chelating resin Purolite S930 â? Analysis of some metal levels... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25371
Environmental Engineering and Management Journal, Vol. 8 Nr. 3
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 â? Bioremediation of contaminated air using a bioscrubberâ? Quality risk evaluation of the groundwater resources on the moldavian areaâ? Electrochemical characterization of some dental materials in accelerated environmental testingâ? Preliminary study of simple and Fenton oxidation with hydrogen peroxide applied on final effluents from a zootechnical farmâ? The environmental impact assessment caused by the dykes failureâ? Revaluation of beer industry byproducts â medical implicationsâ? ... Autori: http://www.ecozone.ro/reviste.php?RID=25372
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 â 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 â 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
Environmental Engineering and Management Journal, Vol. 8 Nr. 6
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 â? Physiological changes in seedling germination and growth plant under chemical stress conditionsâ? Studies on sorption and transport processes of cadmium in soilsâ? Assessment of the anthropogenic impact on water systems by fluorescence spectroscopyâ? Research on the effects of soil improvement by fertilization on the quality of winter wheatâ? Halotherapy: From ethnoscience to scientific explanationsâ? Study regarding the sorption of erythrosine from aqueous solution onto soilâ? Hydroxy... Autori: ISSN: 1582 - 9596 http://www.ecozone.ro/reviste.php?RID=25375
Application of inductively coupled plasma - atomic emission spectroscopy (ICP-AES) based analysis for water quality control
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 AbstractThe quantification of heavy metals presence in the environment is a very important aspect regarding water quality control. The limits for those metals are very well established by Romanian laws and the essence of every validation report is to prove that the method, the apparatus and the operator can reach the established limits. In the present paper such a validation report is presented, proving the appropriate use of Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AE... Autori: Irina Dumitriu, , Ioana Raluca Bunghez, Rodica - Mariana Ion ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25380
Materials processing using solar energy
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 AbstractThe main aspects refer to metals and refractory materials behaviour, at high temperature, to materials purifying and to achieve some chemical syntheses.The main technological parameter of the heating is temperature, heating obtained by focusing Sun's rays. The heating can be used inside the furnace to produce metallic material into a crucible, without any complementary power source.For the future, a bigger interest presents some other metals melting, more expensive than steel, such as ti... Autori: Petrica Vizureanu, Cornel Samoila, Daniel Cotfas ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25387
Priority organic pollutants removal by ultrafiltration for wastewater recycling
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 AbstractUltrafiltration (UF) represents an important option for the advanced wastewater treatment as it offers good performances from both technical and economical points of view, for the removal of suspended solids, colloids and some of the organic compounds present in different effluents. The occurrence of priority organic pollutants in wastewaters streams and the environment has raised intensive scientific debates about their effects and the possible abatement technologies. As part of a broad... Autori: George Barjoveanu, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25390
Application of natural materials as sorbents for persistent organic pollutants
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 AbstractPersistent organic pollutants (POPs) are toxic chemicals that adversely affect human health and the environment around. This group of priority pollutants consists of pesticides, industrial chemicals and unintentional by-products of industrial processes. Natural materials, waste from industry and agriculture and bioadsorbents can be employed as inexpensive adsorbents to remove POPs from environmental components by sorption processes. The paper presents various natural sorbents and some ou... Autori: Laura Carmen Apostol, Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25395
Heavy metals contamination of commercial fish foodstuff - potential health risks on human consumers
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 Abstract
Human exposure to heavy metals requires special surveillance measures on these elements in human body in order to detect a relation between heavy metal exposure and adverse health effects. The aim of this paper is focused on biomonitoring contamination with heavy metals in fish foodstuffs and in blood, and corroboration of contaminant levels with immunotoxicological effects on target groups of consumers. The final goal is to establish some recommendations on human diet with fish food... Autori: Aurelia Meghea, Alina Murariu, Cristina Tanase, Eleonora Codorean ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25398
Optimization of process variables for cadmium removal from synthetic wastewaters by sphagnum moss peat
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 Abstract
The efficiency of Cd (II) removal from aqueous solutions was investigated using Sphagnum moss peat as sorbent. A 23 orthogonal central composite design was successfully employed for experimental design and analysis of results. The combined effect of the initial solution pH, peat dosage and initial Cd (II) concentration was studied and optimized using Response Surface Methodology (RSM). The optimum values of these variables were found to be pH = 4.72, 14.7 g peat /L and 13.64 mg Cd /L, ... Autori: Catalin Balan, Corneliu Cojocaru, Petru Bulai, Doina Bilba, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25399
Decontaminate effect of the functionalized materials with undoped and doped (Ag) TiO2 nanocrystals
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 Abstract
This paper presents the preliminary results of photocatalytic oxidation of humic acid from water using two types of catalysts, i.e., TiO2 and Ag-doped TiO2 modified zeolite (TMZ and Ag-TMZ). TMZ and Ag-TMZ, with zeolite granulation of 315-500 ?Źm was synthesized by sol-gel method, and the morphology and composition of the unmodified/modified zeolite were characterized by BET (BrunauerâEmmetâTeller) method, X-ray Diffraction (XRD), scanning electron microscopy (SEM) and energy dis... Autori: Cornelia Ratiu, Carmen Lazau, Paula Sfirloaga, Corina Orha, Daniela Sonea, Stefan Novaconi, Florica Manea, Georgeta Burtica, Ioan Grozescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25397
Study of the copper (II) removal from aqueous solutions by chelating resin Purolite S930
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 Abstract
This work examines the influence of experimental conditions on the copper (II) ions removal from aqueous solutions using chelating ion exchange resin Purolite S930. The influence of solution pH, initial metal concentration, contact time, temperature, ionic form of the resin and resin dose was studied in batch experiments. The percent of Cu (II) removal has a maximum at pH 5.0 (buffered solutions), and increases with the increasing of resin dose, of the contact time and of temperature... Autori: Petru Bulai, Catalin Balan, Doina Bilba, Matei Macoveanu ISSN: 1582 - 9596 http://www.ecozone.ro/reviste.php?RID=25401
Removal of bis (1-chloro-2-propyl) ether from wastewater using sonodegradation and biodegradation
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 Abstract
The potential of using ultrasonic irradiation and microbiological treatment for the removal bis(1-chloro-2-propyl) ether from aqueous solutions has been investigated. Experiments were performed in a continuous bioreactor, 3500 mL volume, and in an ultrasonic bath respectively, using frequencies of 38+1kHz and applying a power of 30 W. Under these conditions, the sonochemical conversion of ether was found to be superior to the biological one. The ultrasound method was improved by air ... Autori: Mihaela Iordache, Vasile Lucian Pavel, Lim Myunghee, Ioan Iordache ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25403
Assessment of some heavy metals in soils, drinking water, medicinal plants and their liquid extracts
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
Pollution with toxic metals is a serious concern, because once these elements enter in the soil they can be present for a long time, with the potential contamination of drinking water sources. Certain metals in soil may be taken up by plants which are subsequently harvest for human consumption. Our objective was to study the presence of heavy metals in soils, groundwater sources, some medicinal plants from areas of the water sources and in its watery extracts. All of the samples, af... Autori: Diana Diaconu, Victor Nastase, Mara Mihaela Nanau, Ovidiu Nechifor, Elena Nechifor ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25411
Phytoremediation technology for remediation of radiostrontium (90SR) and radiocaesium (137CS) byCatharanthus roseus (L.) G. don in aquatic environment
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
Phytoremediation is an eco-friendly, cost effective, in situ treatment technology. In the present research study, phytoremediation technology has been employed for remediation of radionuclides namely 137Cs and 90Sr by using living green plant Catharanthus roseus. C. roseus plants were exposed to different activity levels of 137Cs and 90Sr in aquatic condition to assess the efficiency of plants for remediation of radionuclides. C. roseus plants have been found to remediate 70%, 52% an... Autori: Singh Anamika, Susan Eapen, Madhusudan H. Fulekar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25417
Reactive dyes removal from wastewater by combined advanced treatment
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
Textile industry is one of the most pollutant and water consuming industries. Large quantities of water are required in materials preparation and dyeing, so consumption and waste generation have become serious concerns for textile manufacturers and finishers. Textile effluents are characterized by high values of quality indicators such as BOD and COD, suspended solids and heavy metals. A serious environmental problem and also an aesthetic problem is the color of the effluent. Reactiv... Autori: Daniela Cailean, George Barjoveanu, Corina - Petronela Musteret, Liliana Rozemarie Manea, Nicolae Sulitanu, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25420
Evolution of emissions of heavy metals in Vaslui County
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
Elaboration of the inventory of the pollutants emissions in atmosphere constitutes the basis for elaboration of the strategies and reglementations, assessment of the trends in evolutions of emissions, modeling of the pollutants dispersions, analysis of new sources, establishment of emission taxes, compliance with legislation, as well as review of existing reglementation and standards regarding the air quality.
The current paper describes both the evolution of the emissions of the he... Autori: Mihaela Budianu, Mihai Nicu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25422
Bioremediation of contaminated air using a bioscrubber
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
This study examined the effect of hexane concentration in the inlet gas stream on the treatment performance of a concentric tube internal loop airlift bioreactor with a 7 L capacity, inoculated with a strain of Pseudomonas aeruginosa. The experiments were conducted employing hexane-contaminated air, in 0.62, 1.26, 2.15 and 4.5 g/m3 concentrations at 29 ¹ 1°C. The 100% hydrocarbon removal was verified when effluents containing 0.62 and 1.26 g/m3 of hexane were employed. Under contin... Autori: Fernando Jorge Santos Oliveira, Leonardo Vazquez, Francisca Pessoa de Franca ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25437
Magnetic density separation of diamonds from gangue
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
In view of the predicted diamond shortage in 2010, a number of innovative processes have been proposed recovering ... Autori: Frederike Weijmans, Erwin Bakker, Peter Rem ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25441
Energy conservation and CO2 emissions reduction for clinker portland cement manufacturing process
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
At present, dangerous industrial wastes are a main source of environmental pollution because they are stored and deposited improperly. Besides, dangerous industrial wastes could also be a source of secondary raw materials which are not well capitalized. This fact causes substantial losses of secondary raw materials and energy and it is explained by the lack of certain technologies of treatment, capitalization and final removal that are technically and economically sustainable. To ide... Autori: Neculai Mihailescu, Vasilica Daescu, Elena Holban, Mariana Nicoleta Badea, Jenica Paceagiu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25447
Residues of polycyclic aromatic hydrocarbons from refinery spent catalysts
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Spent hydroprocessing catalysts from petroleum refining industries have been classified as hazardous wastes due to their content in heavy metal and persistent organic pollutants (POPs). The aim of our paper determine the polycyclic aromatic hydrocarbons (PAHs) residues contents in spent catalysts samples from four different units of the Romanian refinery Rompetrol Rafinare,Constanta: Hydrogen (H), Gas Desulfurization Sulfur Recovery (GDSR), Hydrofining Turbojet Kerosene (HTK) and Pet... Autori: Camelia Draghici, , , Gabriela Stanciu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25449
Case studies regarding the remediation of polluted soils from inactive industrial sites
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The methods generally used for developing these studies are the assessment and investigation. Assessment â all methods used for measuring, reckoning, modeling, forecasting or estimating the presence of a pollutant in the environment. Investigation - the process of identifying the presence of pollutants in the environment, the spatial dispersion of these pollutants, the level of their concentration, as well as the analysis of the environmentâs structure. The steps that were follow... Autori: , Gheorghe - Viorel Cosara, Calin Baciu, Ileana - Codruta Stezar, Augusta - Diana Crisan, Camelia Costan, Cristina Modoi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25451
Iron oxides from electrofilter ash for water treatment (arsenic removal)
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Arsenic (As)-contaminated drinking water is a major problem around the world. The removal efficiency depends strongly on the size of Fe3O4 sorbents.Fe3O4 prepared in laboratory is more efficient in the removal of As and is also more easily recovered from column of magnetic separator than the commercial materials. This would be beneficial in a water treatment system because the As-contaminated Fe3O4 could be flushed from the column permitting reuse of the separator system. The dispers... Autori: Ionel Balcu, Adina Segneanu, Marius Mirica, Mirela Iorga, Catalin Badea, Iuliana Firuta Fitigau ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25456
Non-ferrous heavy metal metallurgy wastewater treatment by the electro-floto-coagulation method
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Electroflotocoagulation is used for the treatment of liquid wastes of various origins, containing suspended matter. The metal hydroxide formed by electrochemical metallic ions generation acts to aggregate the colloidal impurities, and the hydrogen bubbles evolved at the cathode allow flotation of foam containing the impurities. The aggregates formed (containing the impurities) and lifted above the solution can then be removed. Electroflotocoagulation (simultaneous electrocoagulation ... Autori: Marius Constantin Mirica, Mirela Ioana Iorga, Adina Segneanu, Ionel Balcu, Doru Buzatu, Cristian Vaszilcsin ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25457
Performances of biochemical treatment stage from municipal wastewater treatment plant
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The paper presents new studies about the removal efficiency of the biochemical treatment process of the Municipal Wastewater Treatment Plant from Constanta city, during 2008. Influent and effluent samples of biochemical treatment stage were collected and ammonium concentration, chemical oxygen demand (CODCr) and biochemical oxygen demand in five days (BOD5) were measured, aiming to study the evolution of the removal efficiency, during 2008. Additional analyses have been performed in ... Autori: Elisabeta Chirilă, Camelia Draghici, Adriana Puhacel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25458
Adsorption of Cu2+ on White Poplar and Oak Sawdust
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The studies of Cu (II) adsorption were conducted by testing various sawdust types. Two biomass, oak sawdust wood (Querqus robur) and white poplar sawdust wood (Populus alba), have been compared considering their efficiency for copper removal from diluted water solutions. Raw sawdust proved no efficiency in adsorption. Therefore, pre-treatment processes were developed and optimized, to enhance the sawdust affinity for heavy metals adsorption. The optimized pre-treatment conditions are... Autori: Dora Lucaci, Anca Duta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25460
Sorption removal of chromate in single batch systems by uncalcined and calcined Mg/Zn-Al - Type hydrotalcites
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
This work investigated the sorption removal of chromate anion, in single batch systems, from aqueous solutions. The process involves the sorption of the chromate by a series of Mg/Zn-Al - type hydrotalcites, with four Mg/Zn/Al ratios, in two forms: uncalcined and calcined at 500 °C. The calcined Mg-Al (Mg/Zn/Al = 2/0/1) material showed the highest sorption capacity: 35.7 mg/g. The three-parametered Langmuir-Freundlich model approximated the experimental equilibrium data over the con... Autori: Laura Cocheci, Rodica Pode, Eveline Popovici, Emiliana Dvininov, Aurel Iovi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25461
Comparative study on surface water treatment using aluminium sulphate and polyaluminium chlorides as coagulant reagents
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The paper presents the comparative study regarding the turbidity removal using aluminium sulphate Al2(SO4)3*18H2O and polyaluminum chlorides, Aln(OH)mCl3n-m, commercial name, Sachtoklarr 39, in water treatment plant from Covasna City. The parameters that influence the treatment process and the efficiency of turbidity removal were studied. The water characteristic parameters of Basca Mare and Covasna rivers - the two sources of water alimentation for Covasna water treatment plant were... Autori: Daniela Simina Stefan, Cristina Costache, Viorica Ruxandu, Monica Balas, Mircea Stefan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25462
Surface water pollution generated by mining activities. Case study: Aries river middle catchment basin, Romania
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The Aries River, due to its geographic position and its significance in the Mures - Tisza Basin, has a major impact on environmental media, influencing their quality. In the Middle Catchment Basin the main industrial activity is mining, since the Roman times, when the first mines were opened. The mining operations in the region generated a severe pollution of all the environmental media.
The paper identifies the risk areas in the middle Aries River in terms of surface water pollutio... Autori: , Lucrina Stefanescu, Camelia Costan, Mirela Miclean, Cristina Modoi, Serban - Nicolae Vlad ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25470
Enhanced heavy metal adsorption on dye-modified fly ash
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The use of fly ash (FA) in wastewater treatment received a lot of attention for the immobilization of heavy metal cations, mainly Cd2+, Pb2+, Ni2+, Zn2+, Cu2+. For an up-scalable wastewater treatment process, the substrate must have good adsorption efficiency and relatively constant behaviour. Modifying the fly ash surface can be a solution for reaching both goals. The use of FA for heavy metals removal, from wastewaters resulted in the dye finishing industry, faces a supplementary p... Autori: Maria Visa, Anca Duta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25471
Immobilization mechanisms of chromium in cementbased solidified waste
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Knowledge of the binding mechanisms of heavy metals to cement minerals is essential for the prediction of the long-term leachability of cement-based solidified waste containing heavy metals. In this paper, the sorption of chromate ions onto calciumsilicate- hydrate (C-S-H) in equilibrated aqueous suspensions was investigated as a function of liquid-to-solid ratio. The hypothesis of super-equivalent adsorption was assumed to be involved in chromate ions immobilization. This hypothesis... Autori: Constantin Bobirica, Ionel Constantinescu, Liliana Bobirica, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25478
Studies on titanium oxide catalyst doped with heavy metals (cadmium, copper and nickel)
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
In order to improve the photo-efficiency of the electronic process as well as the response into the visible part of the spectrum, TiO2 doping with heavy metal (cadmium, cooper and nickel) have been employed. The objectives of this work are: (a) to prepare doped Me(Cd, Cu, Ni) TiO2 by doctor blade (DB) and spray pyrolysis deposition (SPD) techniques, (b) to characterize the catalysts, (c) to study and compare the activity of the Cd-TiO2, Cu-TiO2 and Ni-TiO2 catalysts on methyl orange ... Autori: Luminita Andronic, Bianca Hristache, Alexandru Enesca, Anca Duta, Maria Visa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25480
Nanoparticle-based materials for catalysis
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Highly dispersed nanoparticles of transition and noble metals are utilized for hydrocarbon reactions and rearrangements important to the chemical industry. The need to obtain 1 to 3 nm particles with narrow size distributions has prompted the development of alternative processing methods. Due to widespread speculation concerning the enhanced properties of nanoparticles over their bulk and atomic material equivalents, nanoparticle synthesis has become an active field of research withi... Autori: , Irina Dumitriu, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25482
Cu-Ni nanostructured electrocatalysts obtained by electrocodeposition
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
A simple method to synthesize copper, nickel and Cu-Ni nanotubes in alumina membrane by direct electrochemical deposition technique is presented.
This work is divided into three main parts:
- elaboration of the nanostructured metals supported on Cu and Ni electroconductive support;
- SEM - EDX characterization of nanodeposits;
- electrochemical characterization of the nanostructured electrodes;
Cu and Cu-Ni nanostructures were obtained by deposition through an alumina membrane (... Autori: Maria Jitaru, Ana-Maria Toma, Mihaela-Claudia Tertis, Ancuta Trifoi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25496
Studies regarding phenol and 4-chlorophenol sorption by surfactant modified zeolites
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Phenols and chlorophenols are contaminants in soils, sediments, surface waters and groundwater, largely because of their worldwide utilization in the last 50 years as wood preservatives and general biocides in industry and agriculture. The toxicity of chlorophenols and their persistence in the environment require advanced treatment techniques for their removal.
This study presents the results of a comparative evaluation of the adsorption of phenol and 4-chlorophenol from aqueous sol... Autori: , Cezar Catrinescu, Roxana Elena Apreutesei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25497
Aspects refering to technical and leaching properties of the secondary aluminium slags - cement composites
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The purpose of this work is to investigate the secondary Al slag (SAS) relating to its technical and environmental properties and, as consequence, to its compatibility with Portland cement matrix. This study may be a contribution to establish of SAS potential valorization as secondary raw material (SRM) in low strength cement matrix composites, as construction products.
DRX mineralogical analyses revealed that SAS includes transition alumina compounds, especial boehmite. The hydrati... Autori: Maria Gheorghe, Nastasia Panait, Romanita Teodorescu, Maria Roman ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25498
Photocatalytic properties of titania - fly ash thin films
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The paper presents the results obtained when using thin films (doctor blade) of titanium oxide powder (Degussa P25) and fly ashactivated with NaOH, for advanced treatment of complex waters resulted in the textile industry. There are studied the heavy metal(cadmium, copper) adsorption and the dyes (methyl orange and methylene blue) photo-degradation using these novel substrates.The thin films crystallinity (XRD), morphology and roughness (AFM) were evaluated and no significant changes... Autori: Anca Duta, Luminita Andronic, Maria Visa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25500
Emerging processes for soil and groundwater cleanup - potential benefits and risks
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
The cleanup of environmental pollution involves a variety of techniques, ranging from simple biological processes to advanced engineering technologies. Cleanup activities may also address a wide range of contaminants. Technologies to remediate contaminated soil fall into two principal clean-up approaches: in-situ (which is always done onsite), or ex-situ (which can be done on- or off-site). In-situ treatment deals with contamination without removing material from the ground, while ex... Autori: Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25501
Passive biomonitoring of atmospheric pollution with heavy metals using native epigeic moss
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
It were investigated some atmospheric sediments of copper and chromium in mining areas of Dorna Basin by passive monitoring with six species of native epigeic moss (Mnium hornum, Mnium cuspidatum, Mnium punctatum, Polytrichum strictum, Thamnium alopecurum si Cephalozia bicuspidate) in two stages: April - September 2005 and October 2005 - March 2006. Thesedeterminations were achieved in 4 locations: Dealul Boambei, Saru Dornei, Sarisorul Mic, Neagra Sarului. In the same time was deter... Autori: Catalin Dumitrel Balan, Ionela Mezdrea Cojocareanu Pata, Matei Macoveanu, Sandu-Marius Pata ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25503
Study of copper and cadmium accumulation by bean
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
Bioremediation of heavy metal contaminated soil is one of the major concerns of our days. Phytoextraction has been lately utilized as an alternative of in situ remediation technology for polluted soils but is generally perceived to be too slow. Even so, phytoextraction is an efficient long lasting, accessible and environmentally friendly technique. The aim of this paper was to evaluate the phytoextraction potential of bean (Phaseolus vulgaris) in stress conditions induced by heavy me... Autori: Alina Stingu, Irina Volf, Valentin I. Popa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25508
Reducing of pollutants emissions and heavy liquid fuels consumption in boilers by using of additives
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
The paper presents the experimental results, obtained using a pilot installation and hot-water boilers for reducing the pollutants emissions in combustion of heavy liquid fuels by using of additives for catalyzing of burning processes.
The experiments were made using additives based on iron and cerium carboxylates. Experimental results, which are presented both in variant of heavy liquid fuels burning with additives and without additives, highlight the reducing of pollutants emissio... Autori: Aurel Gaba, Stefania Iordache, Mircea Vladescu, Dan Ungureanu, Petrica Vizureanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25509
Abiotic and biotic mitigation of volatile methyl siloxanes in anaerobic gas-phase biomatrices
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
This paper presents preliminary results of a batch-scale study assessing the contribution of the multiple phenomena involved in siloxane removal in three-phase biomatrices. Batch scale experiments were undertaken in shaken flasks containing acclimatised culture medium, solid media and siloxane vapours (octamethylcylotetrasiloxane and decamethylcyclopentasiloxane, respectively) under anaerobic gas-phase conditions. Abiotic and biotic phenomena, considered to be possible siloxane remov... Autori: Gabriela Soreanu, Patricia Falletta, Michel Beland, Kara Edmonson, Peter Seto ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25510
Bioavailability processes for contaminants in soils and their use in risk assessment
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
The individual physical, chemical, and biological interactions that determine the exposure of plants and animals to chemicals associated with soils are of great importance in the assessment of contaminants bioavailability. Understanding of bioavailability processes is at last needed to improve the scientific basis of risk assessment and is the purpose of the present research.
Since bioavailability processes are embedded within existing human health and ecological risk frameworks, so... Autori: Brindusa Mihaela Robu, Camelia Smaranda, Florentina Anca Căliman, Laura Carmen Apostol, Lucian Vasile Pavel, Maria Gavrilescu, Raluca Maria Hlihor ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25516
Impact of landfill leachate on soil quality in Iasi county
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
Waste management hierarchy has as priorities waste recycling and energy recovery. Unfortunately, Romania is in the situation so as the waste landfilling is still considered as a suitable solution for waste management. European Union imposed a number of regulations and programs in the field of waste treatment and management that Romania must comply.
The paper describes some aspects regarding characterization of the leachate originating from the Tomesti landfill (situated in Iasi County... Autori: Ana-Maria Schiopu, Brindusa Mihaela Robu, Ion Apostol, Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25523
Equilibrium and kinetic studies of copper (ii) removal on Purolite S930 resin
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
The presence of heavy metals in the environment is a major concern due to their non-biodegradability, bioaccumulation tendency, persistence in nature and toxicity to many life forms. Different treatment techniques for wastewater laden with copper have been developed in recent years to decrease the amount of wastewater produced and to improve the quality of the treated effluent. All techniques have their advantages and limitations in application. One of the most used techniques to rem... Autori: Petru Bulai, Catalin Balan, Camelia Scripcariu, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25531
Using of industrial waste materials for textile wastewater treatment
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
Sorption is one of the several methods that have been successfully utilized for dyes removal. A large number of materials have been used as suitable sorbents for decolourization of industrial effluents: activated carbon (the most common but expensive adsorbent), polymeric resins, various low-cost adsorbents (agricultural and industrial by-products, peat, chitin, silica, bentonite, other clays, fly ash).
Our paper is a review about our researches regarding different types of industri... Autori: Daniela Suteu, Carmen Zaharia, Augustin Muresan, Rodica Muresan, Alina Popescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25532
Nitrogen adsorption of shale for use as media in constructed wetland
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
The constructed wetlands are considered as a low-cost alternative system for nitrogen removal. Shale was selected as a media in constructed wetlands, on the basis of adsorption capacity and suitability for plant growth. The specific objective of this study was to evaluate nitrogen adsorption capacity for using as a media in constructed wetlands. Shale was sieved into 5 particle sizes Shale A-E. The physical and chemical characteristics of shale showed that it is suitable to be use as... Autori: Amara Daothaisong, Jareeya Yimrattanabovorn ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25535
Removal of 4-chlorophenol by surfactant modified zeolites and surfactant modified alkali-treated natural zeolites
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
Chlorophenols are contaminants in soils, sediments, surface waters and groundwater, largely because of their worldwide utilization in the last 50 years as wood preservatives and general biocides in industry and agriculture. The toxicity of chlorophenols and their persistence in the environment require advanced treatment techniques for their removal.
Surfactant-modified natural zeolites (SMZs) represent an important class of sorbents for water treatment. This work presents a comparat... Autori: Roxana Elena Apreutesei, Cezar Catrinescu, Adrian Ungureanu, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25537
Studies regarding advanced processes used for reactive dyes removal from textile effluents
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
In the textile finishing and dyeing industries, the total volume of water consumed is around 150 millions tons/year, and thus very large quantities of water are processed and produced as wastewater by textile plants. Quality indicators of textile wastewaters, like BOD and COD, have values which, in some cases, exceed 5 times the maximum concentration value (allowed by the national quality standards). One of the greatest concerns in wastewater treatment of a textile effluent is the co... Autori: Daniela Cailean, , Florin Brinza ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25538
Adsorption of humic acids and of some metal ions from aqueous solutions on activated carbons
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
This paper is the investigation concerning the removal, from surface water, of humic acids and of some cations (Cu2+, Al3+) on activated carbons AG-3, BAU, CASO-16 from individual solutions as well as from their mixtures both in static and dynamic conditions. The conclusions of the paper are that, when humic acids are adsorbed from micellar solutions, semiassociates are formed on the surface of activated carbon BAU (in its porous structure), while humic acids adsorption on activated ... Autori: Tudor Lupascu, Mihail Ciobanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25539
Assessment of heavy metal contamination and impact on surface waters in IaÂ?i city, Romania
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
The paper makes qualitative and quantitative analyses of heavy metal contamination of surface waters in Iasi City. The examination of data acquisited from the specific sections of the rivers Bahlui (upstream section, Iasi water treatment plant, Holboca section, downstream section, Iasi water treatment station), Nicolina (quarterly data from the established monitoring system) was performed, based on data provided by the Environmental Protection Agency of Iasi District and Prut Water D... Autori: Corneliu Horaicu, Florea Cornel Gabrian, Irina Grozavu, Catalin Constantin Calu, Monica Horaicu, Brindusa Robu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25546
Evaluation of corrosive effects in co-firing process of biomass and coal
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
The paper examines the effects of high temperature corrosion of the surfaces of heat exchange due to corrosive components formed in the co-combustion of biomass and coal. High temperature corrosion of the surfaces of heat exchange becomes a priority in the combustion of biomass with high chlorine and alkali metals, as alkali chlorides formed deposited on the surfaces of heat transfer, leading to serious consequences for them. Forms of manifestation of corrosion are numerous, the most... Autori: Ionel Pisa, Corina Rădulescu, Lucian Mihăescu, Gheorghe Lăzăroiu, Gabriel Negreanu, Simona Zamfir, Danut Vairenu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25553
Optimization of process variables to maximize the copper loading capacity of Purolite S930 resin
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6
Abstract
The practical capacity of an ion exchange or chelating resin depends on various process variables, such as initial solution pH, initial metal ion concentration, metal/resin ratio, contact time and temperature. This work presents the optimization of process variables to maximize the copper loading capacity of chelating resin Purolite S930. To study the combined effect of the initial solution pH, initial Cu (II) concentration and resin dosage were used a 23 orthogonal central composi... Autori: Petru Bulai, Catalin Balan, Corneliu Cojocaru, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25563
Arsenate removal by Withania frutescens plant from the south-western Morocco
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
Withania frutescens plant from the south-western Morocco was used as an environmentally friendly material for the removal of As(V) ions from aqueous solutions. This work presents the characteristics of the adsorption and the desorption processes of As(V) using the dried W. frutescens plant as an environmentally friendly adsorbent. The mass of the adsorbent, the As(V) concentration, the contact time and the pH of the tested aqueous solutions were used as controlled variable parameters... Autori: Mohamed Chiban, Gabriela Lehutu, Fouad Sinan, Gabriela Carja ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25568
Textile wastewater treatment by homogeneous oxidation with hydrogen peroxide
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
The textile wastewaters have a diverse composition depending both on the used raw materials and applied manufacturing technologies. These wastewaters may contain various pollutants such as organic compounds (e.g. residual dyes), suspended solids, metal ions etc. Most of dyes are synthetic compounds with aromatic molecular structures and non-biodegradable. The oxidative destruction via homogenous oxidation processes with hydrogen peroxide (simple chemical oxidation with H2O2 or advanc... Autori: Carmen Zaharia, Daniela Suteu, Augustin Muresan, Rodica Muresan, Alina Popescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25570
Hydroxyapatite/polyurethane composite membranes for lead ions removal
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
This work describes the preparation of a hydroxyapatite/polyurethane composite membrane and their characteristics. The porous hydroxyapatite/polyurethane composite membranes were made via solvent casting process. The deposited hydroxyapatite layers were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The data suggest that the method utilized in this work can be applied to obtain deposition of coating of crystalline hydroxyapatite on porous polyurethane... Autori: Gabriela Ciobanu, Dorina Ignat, Gabriela Carja, Constantin Luca ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25572
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
Physiological changes in seedling germination and growth plant under chemical stress conditions
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
When plants are exposed to heavy metals influence, the processes of growth inhibition, ion leakage of all membrane, distribution of pigment and even more death of plants are produced. The physiological and biochemical changes in germinating seedling and cultivation in plastic pots experiments of different plant species (maize, bean, oat, and spinach) were investigated under the influence of copper ions as stress agent. Differences between tolerances against copper excess in the case ... Autori: Alina Stingu, Irina Volf, Valentin I. Popa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25578
Chelating sorbent containing two types of functional groups hydroxamic acid and amidoxime for lead (II) ions effluent management
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
The removal efficiency of Pb(II) from aqueous solutions by sorption on a bifunctional acrylic ion exchange resin with groups of hydroxamic acid and amidoxime is presented. It was found that Pb(II) sorption potential varies as function of solution pH, initial metal concentration, contact time and temperature. From aqueous solutions with Pb(II) initial concentration of 82.96 ?Â?g/mL the sorption percentage is 98.64%. The Langmuir and Freundlich isotherms were used to model the Pb(II) ... Autori: Anca Ceica, Carmen Paduraru, Igor Creţescu, Lavinia Tofan, Violeta Neagu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25586
Removal of dunkel blau dye from aqueous solutions by fungal and peat biomass in batch mode
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
Wastewaters of textile and leather dying industries contain significant quantities of water-soluble dyes. Moreover the temperature and pH of these wastewaters may be controlling variables affecting the biosorption performance. In this study the sorption of dark blue dye by Aspergillus biomass and peat was studied as a function of temperature, initial dye concentration, and initial pH values. In addition, the effects of sorbent dosage on the sorption processes were systematically stud... Autori: Cornel Cojocaru, Cornel Pohontu, Igor Creţescu, Mariana Diaconu, Roxana Elena Benchea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25587
Integrated treatment of leachate from municipal waste solid landfill
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
The present paper proposes an integrated-treatment process of leachate from a municipal landfill, which involves two treatment steps. The first step consists in diminishing the organic content through an advanced oxidation process using ozone and hydrogen peroxide. The second step is performed in order to diminish the content of heavy metals through a sorption process on a natural low-cost biosorbent, thus the traces of organic substances remained after oxidative degradation or oxida... Autori: Carmen Paduraru, Corneliu Pohontu, Igor Creţescu, Lavinia Tofan, Marius Sebastian Secula, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25589
Analysis of factors determining the behaviour of chromium in some romanian soils
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
Chromium (Cr) is one of the most common metal contaminants in soil because of its use in ore refining, production of steel and alloys, metal plating, tanneries, wood preservation, and pigmentation. In soil environment, the most stable oxidation states of chromium are Cr (III) and Cr (VI). While Cr (III) is considered an essential trace element for the functioning of living organisms, Cr (VI) is toxic and carcinogenic to humans via inhalation for long exposures, since it is easily sol... Autori: Dumitru Bulgariu, Laura Bulgariu, Maria Gavrilescu, Raluca Maria Hlihor, Vasile Lucian Pavel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25590
Biosorption of malachite green from aqueous solutions onto biomaterials
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
The use of biomaterials as biosorbents for treatment of wastewaters will provide as a potential alternate to the conventional treatment methods. The main advantages of biosorption are high selectivity , cost effectiveness and good removal performance. World wide numerous low cost bio materials have tried for biosorption of dyes. In this present investigation, the dead biomass of Penicillium sp. fungus and wood sawdust was used as biosorbents and their capacity to removed malachite gr... Autori: Cornel Pohontu, Florin Luca, Igor Creţescu, Manea Liliana, Mariana Diaconu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25593
Optimization by NN ? GA technique of the metal complexing process. potential application in wastewater treatment
Environmental Engineering and Management Journal › Vol. 9 › Nr. 2 Abstract
Some samples consisting in silica functionalized in different degrees with dihydroxy-azomethine groups have been tested as sorbents for copper (II) ions from aqueous solutions in different conditions. An indirect monitoring procedure for the complexing process was approached: UV-VIS absorption intensity ? time variation for the metal-containing solution in which complexing silica was soaked. In order to find the conditions in which the maximum efficiency in the metal absorption can b... Autori: Ciprian-George Piuleac, Maria Cazacu, Silvia Curteanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25608
Nitrate removal from aqueous solution using MgCl2 impregnated activated carbon
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
The aim of this study was to assess nitrate removal using impregnated activated carbon (AC) with MgCl2. After impregnating of AC using heat treatment, the MgCl2 is converted to efficient MgO. The denitrification was conducted at pH 6.2, 25?C, and initial concentrations of 20 mg/L nitrate-N. The effects of the operating parameters including AC dosage, pH, and contact time have been investigated. Experimental data show that AC modified by MgCl2 was more effective than virgin AC for nit... Autori: Abbas Rezaee, Hatam Godini, Sahand Jorfi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25618
The characterization and the synthesis of a new coordination compound for removal of Cr(III) from wastewaters
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
The Schiff base N,N??(salicylidene)-methylenediamine, known as Salmen in combination with Cr(III) forms at pH = 4.5 a greenish precipitate, which is stable at room temperature but decomposed on heating. The study of the Infrared spectra, Electron Spin Resonance (ESR), X-ray diffraction and thermogravimetry has pointed out that the precipitation form is a complex, while the molar ratio showed that the combination rate of Cr(III): N,N?-bis(salicylidene)-methylenediamine is 1:1. The new... Autori: Doina Sibiescu, Ioan Roşca, Irina Spatarescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25619
Study on removal of cadmium from aqueous solutions by adsorption on bael tree leaf powder
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
The adsorption behavior of bael tree (BT) leaf powder for cadmium ions from aqueous solutions has been investigated as a function of appropriate equilibrium time, adsorbent dose, adsorbate concentrations and pH using a batch system. Studies showed that the pH of aqueous solutions affected cadmium removal as a result of the fact that removal efficiency increased with increasing solution pH. The maximum adsorption was 93.56% at solution pH equal to 6.0, contact time of 30 min and initi... Autori: Ponnusamy Senthilkumar, Rangasamy Gayathri ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25621
Aerobic sequencing batch reactor system with granular activated carbon for the treatment of wastewater containing a reactive dye
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
In this study, the effect of adding granular activated carbon (GAC) to aerobic sequencing batch reactor (SBR) on possibility to treat a wastewater containing a reactive dye (Brill Blue KN-R) was investigated. Experiments were performed in four cylindrical Plexiglas reactors for 68 days (5 days for acclimatization of sludge and 63 days for normal operation in two separate phases). Initial dye concentrations were adjusted to 20, 25, 30 and 40 mg/L in the reactors R1, R2, R3 and R4, res... Autori: Amir Asadi Vaigan, Hossein Hashemi, Mohammad Reza Alavi Moghaddam ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25624
Modeling and simulation of an ultrafiltration process for the removal of suspended solids and colloids from wastewater
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
Mathematical modeling of the ultrafiltration (UF) process is motivated by the complexity of retention phenomena that occur during the UF in conjunction with the complexity of wastewater matrices submitted to ultrafiltration, as well as by the need to predict the process behavior in extreme conditions, such as high pollution loads for UF-membrane cleaning cycles optimization or for automated control of the process. Thus, series of laboratory-scale ultrafiltration experiments were perf... Autori: , George Barjoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25630
Chemical oxidation of treated textile effluent by hydrogen peroxide and fenton process
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
In this study the possibility to apply the oxidation process for treating textile effluents, by using hydrogen peroxide and Fenton process was evaluated through determining the color and chemical oxygen demand (COD) removal. The experimental variables studied include the dosages of hydrogen peroxide and iron salts, oxidation time and pH value. The result showed that oxidation process using hydrogen peroxide alone is inefficient in COD and color removal, since only 25 % of COD removal... Autori: Abdelnaser Omran, , Marniyanti Mamat Noor ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25631
Biosorption of hexavalent chromium based on modified Y zeolites obtained by alkali-treatment
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
The structural modification of external surface of NaY was investigated in order to enhance efficient biosorption systems consisting of a bacterial biofilm, Arthrobacter viscosus, supported on that zeolite, for removing hexavalent chromium from aqueous solutions. The supported bacterial biofilm reduces Cr(VI) to Cr(III) and this cation is then retained in the zeolite by ion exchange. NaY zeolite was modified by alkali-treatments using NaOH 2.0 M, with two different contact periods of... Autori: Bruna Silva, Cristina Quintelas, Hugo Figueiredo, Isabel C. Neves, Manuel F.R. Pereira, Teresa Tavares ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25637
Denitrifying potential of an activated sludge derived consortium
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
The aim of this work was the evaluation of the denitrification potential of a consortium of activated sludge adapted to anoxic conditions. As the carbon source is the main parameter influencing the denitrification process, in the first stage three carbon sources (acetate, citrate and glucose) were assayed in batch activity tests. The highest denitrification efficiency was ttained with acetate, being nitrate and nitrite completely reduced. The adapted sludge was then used as a potent... Autori: Joana Azeredo, Pilar Teixeira, Rosario Oliveira, Zelia Fernandes ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25638
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. 4
Environmental Engineering and Management Journal › Vol. 9 › Nr. 4 ? POLLUTION PREVENTION, A KEY TO ECONOMIC AND ENVIRONMENTAL SUSTAINABILITY
? A COMPARISON BETWEEN DIFFERENT SCENARIOS OF ROMANIAN MUNICIPAL SOLID WASTE TREATMENT BEFORE LANDFILLING
? A STUDY ON ENERGY CONSUMPTION IN ROMANIA
? ENVIRONMENTAL INFLUENCES ON STRESSED METALLIC SURFACES
? ASPECTS OF HYDRODYNAMICS AND MASS TRANSFER IN DIFFUSED AERATION SYSTEMS
? THE STATUS OF SOME SELECTED HEAVY METALS IN ROADSIDE SOILS OF BURSA PROVINCE, TURKEY
? PREPARATION AND CHARACTERI... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25656
Environmental Engineering and Management Journal, Vol. 9 Nr. 6
Environmental Engineering and Management Journal › Vol. 9 › Nr. 6 ? RESEARCH ON NaCl SALINE AEROSOLS I. NATURAL AND ARTIFICIAL SOURCES AND THEIR IMPLICATIONS
? DECISION SUPPORT MODELS FOR SOLID WASTE MANAGEMENT ? AN OVERVIEW
? POLICY AND STRATEGY FOR IMPROVING SUSTAINABLE SOCIAL DEVELOPMENT PROGRAMMES
? APPLICATION
OF SHALLOW POND SYSTEM USING WATER HYACINTH FOR DOMESTIC WASTEWATER
TREATMENT IN THE PRESENCE OF HIGH TOTAL DISSOLVED SOLIDS (TDS) AND HEAVY
METAL SALTS
? TRENDS OF THE COMMUNITARIAN COHESION POLICIES AND ADVERTISING FOR EC... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25658
Environmental Engineering and Management Journal, Vol. 9 Nr. 7
Environmental Engineering and Management Journal › Vol. 9 › Nr. 7 ? MUNICIPAL SOLID WASTE LANDFILLING AND TREATMENT OF RESULTING LIQUID EFFLUENTS
? ROMANIA: ENTREPRENEURIAL VALUES AND SUSTAINABILITY
? THE COMPRESSIVE STRENGTH OF WOODEN BRIQUETTES USED AS RENEWABLE FUEL
? ECO-FRIENDLY EXTRACTION AND SEPARATION METHODS OF CAPSAICINES
? ADDRESSING ISSUES OF GEOENVIRONMENTAL RISKS IN DOBRUJA, ROMANIA/BULGARIA
? ADSORPTION OF 2,4-DINITROPHENOL AND 2,6-DINITROPHENOL ONTO ORGANOCLAYS AND INORGANIC-ORGANIC PILLARED CLAYS
? APPLICATION
O... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25659
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. 9 Nr. 9
Environmental Engineering and Management Journal › Vol. 9 › Nr. 9 ? STUDY OF BIODIESEL PRODUCTION FROM OILSEED PLANTS II. EVALUATION OF BIODISEL PRODUCTION FROM SOME CULTIVARS OF RAPES
? STUDY
OF BIODIESEL PRODUCTION FROM OILSEED PLANTS I. EVALUATION OF THE
GENETIC SIMILARITY OF SOME Brassica Napus CULTIVARS USING RAPD MARKERS
? STRUCTURAL CHARACTERIZATION AND IN VITRO CYTOTOXIC POTENTIAL OF COAL DUST IN A ROMANIAN POWER PLANT
? MUNICIPAL SOLID WASTE MANAGEMENT IN BENGHAZI (LIBYA): CURRENT PRACTICES AND CHALLENGES
? COMPARATIVE ENVIRONM... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25661
Environmental Engineering and Management Journal, Vol. 9 Nr. 10
Environmental Engineering and Management Journal › Vol. 9 › Nr. 10 ? AN ASSESSMENT OF OPERATIONAL PARAMETERS FOR THE REMOVAL OF CHLOROPHENOLS FROM WASTEWATER
? ENVIRONMENTAL SCIENCES: A PSYCHOLOGICAL-BEHAVIORAL MODEL FOR RESEARCHERS
? ECOLOGICAL
AGRICULTURE: DYNAMICS OF THE BIOLOGICAL ACTIVITIES IN SOILS CULTIVATED
WITH MAIZE UNDER THE INFLUENCE OF ORGANIC FERTILIZATION
? SOLAR-ASSISTED JOULE-BRAYTON ENGINES USED TO REDUCE CARBON DIOXIDE EMISSIONS
? STUDY OF THE ENVIRONMENTAL EFFECTS OF HEATING SYSTEMS
? MIXED JET-VORTEX METHOD FOR ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25662
Environmental Engineering and Management Journal, Vol. 9 Nr. 11
Environmental Engineering and Management Journal › Vol. 9 › Nr. 11 ? COMPARATIVE CONSIDERATIONS ON THE STRUCTURE OF SOME MOLYBDENUM/NIOBIUM DOUBLE PEROVSKITES OXIDES
? THE INFLUENCE OF THE STORAGE TIME ON THE STABILITY OF BUTTER
? CaCO3 CONTROLLABLE SYNTHESIS BY DOUBLE EXCHANGE METHOD USING CaCl2 RESIDUAL SOLUTIONS
? OPTIMIZATION OF COAGULATION-FLOCCULATION IN THE TREATMENT OF CANAL WATER
? ANODIC DETERMINATION OF PENTACHLOROPHENOL FROM WATER USING CARBON NANOFIBER-BASED COMPOSITE ELECTRODE
? STUDY OF PRECIPITATES GROWTH IN COAGULATION ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25663
Environmental Engineering and Management Journal, Vol. 10 Nr. 1
Environmental Engineering and Management Journal › Vol. 10 › Nr. 1 ? COMPACT MICROPULSE BACKSCATTER LIDAR: AIRBORNE AND GROUND-BASED APPLICATIONS
? STUDIES OF THE IMPACT OF AEROSOL OPTICAL PROPERTIES ON CLIMATE CHANGE PROCESSES
? A STUDY OF THE AEROSOL OPTICAL PROPERTIES AT TWO AERONET STATIONS FROM ROMANIA
? COMPLEMENTARY ATMOSPHERIC URBAN POLLUTION STUDIES IN THE NORTH-EAST REGION OF ROMANIA, IASI COUNTY
? ?NGSTR?M TURBIDITY IN THE LOWER LAYERS OF THE TROPOSPHERE
? LIDAR MONITORING OF ANTHROPOGENIC POLLUTION AND NATURAL PHENOMENA
... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25665
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
Environmental Engineering and Management Journal, Vol. 10 Nr. 3
Environmental Engineering and Management Journal › Vol. 10 › Nr. 3 ? ADSORPTION OF DYE FROM AQUEOUS SOLUTION USING SILVER WOOD SAWDUST CARBON
? TIME SERIES ANALYSIS OF THE HEAVY METALS LOADED WASTEWATERS RESULTED FROM CHROMIUM ELECTROPLATING PROCESS
? WATER QUALITY CHARACTERIZATION OF THE PRUT RIVER
? ETHICAL AND SUSTAINABLE EDUCATION OF ENVIRONMENTAL ENGINEERS - BETWEEN REALITY AND HOPE
? INTERACTIONS AMONG CLIMATE, VEGETATION AND SOILS IN RADUCANENI ? IASI AREA
? DISTRIBUTION OF MIXING INTENSITY OF OXYGEN-VECTOR DISPERSIONS IN AERATED... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25669
BIOSORPTION OF LEAD FROM AQUEOUS SOLUTION BY USING CHEMICALLY TREATED Saccharomyces cerevisiae
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 Biosorption of lead (II) onto the biosorbent, represented by untreated S. cerevisiae and NaOH-treated S. cerevisiae was examined and the effects of contact time were investigated. The lead (II) biosorption was fast and equilibrium was attained within 90 mins. The maximum removal ratios of lead (II) for untreated S. cerevisiae and NaOH-treated S. cerevisiae after 3 h were 48.6% and 92.5%, respectively, with initial lead (II) concentration of 40 mg/L and optimum pH of 5.0. Data obtained from batch... Autori: Ying Zhang, Yingjie Dai, Baiyin Liu, Fang Ma, Ru Zheng, Limin Donghttp://www.ecozone.ro/reviste.php?RID=25670
REMOVAL OF p-XYLENE BY A DBD-TYPE PLASMA COMBINED WITH CATALYST
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 The removal efficiency of p-xylene from gas stream was experimentally investigated in a dielectric barrier discharge (DBD) reactor, which was combined with catalyst, MnO2/Al2O3 pellets, in the discharging and the afterglow area, respectively. The CO2 selectivity of the two kinds of structure was also discussed. The results showed that in both the situation, the synergetic removal efficiency of p-xylene by the DBD-catalyst hybrid system increased with increasing the discharge power and decreasing... Autori: Hongxia Liu, Yun Liuhttp://www.ecozone.ro/reviste.php?RID=25674
EFFECT OF MICROBIAL ACTIVITY IN THE RHIZOSPHERE OF WETLAND PLANTS ON REMOVAL OF TOTAL ORGANIC CARBON AND NITROGEN FROM WASTEWATER
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 Rhizobag incubation experiments were conducted to study microbial biomass carbon (MBC), microbial biomass nitrogen (MBN), soil respiration and enzyme activity (urease and phosphatase) in the rhizosphere soil of three different wetland plants and its influence on the removal of total organic carbon (TOC) and total nitrogen (TN). MBC, MBN, soil respiration and enzyme activity were higher in the rhizosphere than in the non-rhizosphere soil of the wetland plants. Microbial activity in the rhizospher... Autori: Defu Xu, Hua Fang, Xianghua Xu, Xiaoli Zhao, Yingxue Lihttp://www.ecozone.ro/reviste.php?RID=25679
PERFORMANCE IMPACT OF LOADING RATE ON A MULTI-STAGE FILTRATION SYSTEM FOR AGRICULTURAL RUNOFF PURIFICATION
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 A multi-stage filtration system located next to Lushan River in Gaofeng Town of Chongqing, P.R. China was built to indicate the impact of loading rate on agricultural runoff purification performance. The experimental system was proved to be effective in the removal of agricultural non-point source pollutants, and it was adapted to the changes of influent quality and quantity. The average removal rate of chemical oxygen demand (COD), ammonia (NH4 +-N), total nitrogen (TN) and total phosphorus (TP... Autori: Lei Huang, Xu Gao, Wei-dan Xie, Jun-hong Chen, Xiao-xia Ma, Ming-guo Chen, Jin-song Guohttp://www.ecozone.ro/reviste.php?RID=25682
CHEMICAL CHARACTERISTICS OF INHALABLE ATMOSPHERIC AEROSOLS IN URUMQI DURING WINTER
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 PM10-2.5 and PM2.5 samples were collected from December 2007 to January 2008 at six sampling sites in Urumqi Xinjiang, China. The concentrations of seven kinds of water-soluble ionsââSO4 2-, NO3-, Cl-, NH4 +, K+, Na+, and Ca2+ââwere analyzed using ion chromatography. The concentrations of heavy metal elements, Cr, Co, Cd, Pb, and Hg were measured using inductively coupled plasma mass spectrometry (ICP-MS). The results indicated that, in PM2.5 and PM10-2.5, the average mass concentration ... Autori: Talip Dilnur, Tursun Yalkunjan, Manabu Igawa, Yimit Abulizihttp://www.ecozone.ro/reviste.php?RID=25683
ELECTROCHEMICAL TREATMENT OF MUSTARD WASTEWATER USING CARBON PAPER ELECTRODE
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 Treatment of mustard wastewater with high salinity and organic concentration by electrochemical degradation was studied. The influence of the critical parameters of electro-oxidation such as pH, current density, salt concentration and energy consumption on the removal efficiency of COD and NH3-N was studied using porous carbon electrode. It was found that the COD and NH3-N removal efficiency could be enhanced by increasing pH, current density and salt concentration. The current density of 0.032A... Autori: Hainan Ai, Qiang He, Hongxiang Chai, Xuebin Hu, Tengrui Longhttp://www.ecozone.ro/reviste.php?RID=25685
INFLUENCE OF DISINFECTION WITH CHLORINE DIOXIDE ON DISSOLVED ORGANIC MATTER AND BIOLOGICAL TOXICITY OF URBAN WASTEWATER
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 Chlorine dioxide (ClO2) is widely used as disinfectant in tertiary sewage treatment process. In order to identify the impact of disinfection with ClO2 on treated water quality, secondary effluent pretreated by coagulation was disinfected by ClO2, and the characteristic of dissolved organic matter (DOM) and the biological toxicity of the water before and after disinfection were investigated. The results showed that ClO2 could remove part of DOM and the removal rate of hydrophobic (HO) component b... Autori: Lihua Cheng, Xuejun Bi, Aihua He, Changqing Liu, Qi Wang, Zuliang Liaohttp://www.ecozone.ro/reviste.php?RID=25692
ADSORPTION OF Cr(VI) ON Fe-Ni MODIFIED BENTONITES
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 A series of sodium bentonites as raw material were prepared to the modified inorganic iron-nickel montmorillonites and organic composite montmorillonites. The structural characterization and morphology of the iron-nickel crosslinked modified bentonites were observed by means of IR spectroscopy, X-ray diffraction, scanning electron microscopy. The effects of the amount of bentonites, adsorption time and pH change on the adsorption of Cr(VI) have also been studied. The results indicated that the a... Autori: Shao Hong, Cao Ninghttp://www.ecozone.ro/reviste.php?RID=25695
SCREENING AND BIOLOGICAL CHARACTERISTICS OF A MANGANESE TOLERANT MICROORGANISM
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 Ecological adaptation of heavy metal polluted environments is significantly enhanced through plants inoculated with plant growth-promoting bacteria (PGPB), and the cost of phytostabilization in metal tailings can be reduced. On the basis of the systematic investigation of manganese tolerant plants which grew on Xiangtan manganese tailings, rhizosphere soils of th Chenopodium album Linn. were collected. One yellow manganese-resistant strain named XZL01 was isolated from the rhizosphere of fresh p... Autori: Shengguo Xue, Yameng Ma, Xiaohua Zhou, Xiyan Zhou, Fenghao Liuhttp://www.ecozone.ro/reviste.php?RID=25696
PERFORMANCE OF MEMBRANE BIOREACTOR (MBR) PROCESS TREATING WASTEWATER CONTAINING DIFFERENT CONTENT OF SEAWATER
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 A submerged membrane bioreactor (MBR) was employed to treat wastewater containing different content of seawater in this work. During the process, the operating conditions were as follows: COD was 800-1000 mg/L, ammonium-N was 80-100 mg/L, pH was 7.5-8.5, mixed liquor suspended solids (MLSS) was around 7000 mg/L, dissolved oxygen (DO) was 2-4 mg/L. The results showed that the ammonium-N removal was better than COD removal. Sludge settling property was good in saline wastewater treatment, and the ... Autori: Jin Li, Deshuang Yu, Dan Wanghttp://www.ecozone.ro/reviste.php?RID=25697
TRANSFORMATION AND FLUORESCENCE SPECTROSCOPY OF DISSOLVED ORGANIC MATTER (DOM) IN LANDFILL LEACHATE TREATED BY COMBINED PROCESS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 The paper analyses the removal efficiency and fluorescence spectroscopic characterization of landfill leachate dissolved organic matter (DOM) fractions in the combined stripping, fenton oxidation, sequence batch reactor, and coagulation process. The high contents of DOM of landfill leachate in each process unit were fractionated into HA, FA, and HyI. The result was the combined process availability for effective removal of DOM fractions. The removal rates for DOM, HA, FA and HyI were 91.9%, 97.1... Autori: Zhiping Liu, Jin-song Guo, Fang Fanghttp://www.ecozone.ro/reviste.php?RID=25702
SOLAR SYSTEMS FOR WOOD DRYING
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:Drying wood requires a significant amount of thermal energy, in order to heat-up wood and evaporate the water inside it.Therefore, solutions to minimize this consumption are a topic of maximum interest for wood-processing industries. Employingsolar power for drying wood is not a novelty, considering that this possibility was already acknowledged at the end of the 17thcentury, but since then, kiln design was significantly improved, once with the progress of knowledge regarding the mechan... Autori: Ion Marinescu, Mihaela Câmpean ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25727
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
QUANTIFYING THE BENEFICIAL EFFECT OF DIFFERENT PLANT SPECIES ON AIR QUALITY IMPROVEMENT
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 The beneficial effect of urban plants in improving air quality is often mentioned in literature but is seldom quantified and valuated. Quantification and valuation of the benefits provided by urban plants allow direct comparison between plant species and help make more informed urban planning decisions. Based on fieldwork study and data processing, carbon dioxide (CO2) sequestration, oxygen (O2) generation, transpiration cooling, sulfur dioxide (SO2) removal and dust interception are quantified ... Autori: Qijiao Xie, Zhixiang Zhou, Fang Chenhttp://www.ecozone.ro/reviste.php?RID=25710
PHOTODEGRADATION PROCESSES FOR ADVANCED TREATMENT OF INDUSTRIAL WASTEWATERS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:The textile industry uses high quantities of water which in many cases are disposed to the environment with inadequate treatment.In this work the effluents from the polyamide textile industry containing Bemacid Gelb, Bemacid Rot and Bemacid Blau weretreated by heterogeneous photodegradation. Treatment performances have been evaluated in terms of conductivity, turbidity, totaldissolved solids (TSD), chemical oxygen demand (COD), total organic carbon (TOC), biochemical oxygen demand (BOD5... Autori: Luminita Andronic ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25720
REMOVAL OF METHYL ORANGE AND METHYLENE BLUE DYES FROM WASTEWATER USING SAWDUST AND SAWDUST-FLY ASH AS SORBENTS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:Methyl orange and methylen blue are two dyes resulted from the textile industry. They are not raising just esthetical problems, butthey are toxic and hence harmful to aquatic animals. The aim of this study is to test the capacity of three types of sawdust (oak,willow and white poplar) and mixed substrates, sawdust: fly ash (FA), to remove the methyl orange (MO) and methylen blue(MB) from wastewater. The influence of contact time, solution pH and initial concentration of dyes on the blea... Autori: Anca Duta, Dora Lucaci ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25752
COMPARATIVE HEAVY METALS AND DYES REMOVAL EFFICIENCY ON FLY ASH AND WOOD ASH
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:Ash is a waste that can be an efficient substrate in wastewater treatment for the immobilization of heavy metals and for dyesremoval. For an up-scalable wastewater treatment process, efficient substrates, with relatively constant behavior are needed andmodifying the adsorbent surface can be a feasible solution. Fly ash, resulted from coal burning, and wood ash are mixtures mainlycontaining metal oxides and carbon in various proportion, depending on the initial raw material.The paper pre... Autori: Maria Visa, Mihaela Nacu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25771
STUDIES ON ADSORPTION AND BIODEGRADATION OF CHROMIUMCONTAINING WASTEWATER BY LABORATORY-SCALE SEQUENCING BATCH REACTOR-POWDERED ACTIVATED CARBON SYSTEM
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:The study involved investigating the effects of Cr(III) and the efficacy of powdered activated carbon (PAC) in reducing theinhibitory effects of Cr(III) on activated sludge under sequencing batch reactor (SBR) operation. The addition of Cr(III) into SBRsystem caused significant inhibitory effects on the activity of activated sludge as indicated by drastic drop in specific oxygenuptake rate (SOUR). The increase of Cr(III) concentration from 5 to 10 mg/L further deteriorated the treatment... Autori: Eiichi Toorisaka, Makoto Hirata, Soon-An Ong, Tadashi Hano ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25773
LEACHING OF NONFERROUS METALS FROM OXIDIZED LOW GRADE COMPLEX CONCENTRATE
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:The oxidation of low grade complex concentrates (Cu, Pb and Zn) in aqueous media (weak alkaline) oxidized nonferrous metalsconcentrates is carried out at high pressure. Leaching is the subsequent processing step in metal extraction. The paper studies theinfluence of some parameters (temperature, time, L:S ratio, excess) on the leaching efficiency of nonferrous metals from oxidizedconcentrate. The optimum parameters determined are: S/L ratio of 10/1, 25% reactive excess, leaching tempera... Autori: Cornelia Lupu, Dragoş Taloi, Liliana Gherghe, Luminita Mara, Teodor Velea, Vasile Predica ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25774
VARIATION ANALYSIS OF HEAVY METAL RESIDUES IN MILK AND THEIR INCIDENCE IN MILK PRODUCTS FROM MOLDAVIA, ROMANIA
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:The study was conducted to evaluate the concentration variation of heavy metals in milk collected from two different groups ofsources: milk collecting centers and dairy farms. Also, their incidence in milk products, as pasteurized milk, butter milk, yogurt,cream, cheese, hard cheese was determined in the NE Romania (Moldavia).The analytical results revealed that the milk samples from the collecting centers had higher levels than the samples from the dairyfarms of Pb (2.90 to 3.45 vs. 1.... Autori: Andrei - Cristian Grădinaru, Gheorghe Solcan, Ovidiu Popescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25776
SPECTROPHOTOMETRIC PARAMETERS FOR ORGANIC MATTER CHARACTERIZATION IN RAW AND TREATED SURFACE WATER
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:This study aimed to assess the coagulation performance using simple aluminum sulfate (Alum) and pre-hydrolyzed polyaluminumchloride (PACl) coagulation agents by conventional global parameters, i.e., turbidity and organic matter expressed by totalorganic carbon (TOC) and chemical oxygen demand (COD), and non-conventional spectrophotometric parameters.Non-conventional spectrophotometric parameters, expressed as absorbance recorded at different wavelengths, i.e., A254, A280,A365, allowed d... Autori: Florica Manea, Georgeta Burtică, Ilie Pisoi, Smaranda Masu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25777
OPTIMIZATION OF PHOTO-CATALYTIC PROCESS BY TiO2 NANO POWDER IMMOBILIZED ON CONCRETE SURFACE FOR TREATMENT OF PHENOLIC WASTEWATER
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:In this paper, photo-catalytic process for treatment of phenolic wastewater by TiO2 nano powder immobilized on concrete surfacein a recirculation hydraulic flow was investigated. The process affected by different operational conditions that the optimum onescould be obtained from variables interchange. Taguchi method as a proper method for design of experiments and optimizationwas used to find optimum conditions. Selected five parameters at four levels were consists of initial phenol con... Autori: Bita Ayati, Hossein Ganjidoust, Mohammad Delnavaz, Sohrab Sanjabi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25778
ECONOMIC AND CONSTRUCTION ANALYSIS OF LIGHTWEIGHT MEMBRANES IN HOUSING IN TEMPERATE CLIMATES
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:Lightweight materials are more viable for use in invariably hot or cold climates than in temperate climates. However, it is possibleto use lightweight construction systems and specifically membranes even in housing buildings in temperate climate areas, if theirproperties are well explored, allowing better environmental performance and cost effectiveness than conventional solutions. In theouter skin and in dividing elements, architectural membranes can be used as thermal regulators, for ... Autori: António Pedro Reis, Joăo Pedro Couto, Paulo Mendonça ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25781
INCREASED SECURITY OPERATION OF NUCLEAR FACILITIES BY USING REFRIGERATION SYSTEMS WITH ENVIRONMENTALLY FRIENDLY FREON
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:One of the basic conditions for the operation of nuclear installations is security operation. The complexity of the phenomena inheavy water detritiation plants, determine the use of advanced equipment for technological processes involved. Pilot Plant forTritium and Deuterium Separation developed the cryogenic technology of tritium separation from tritiated heavy water. Theprocess is based on an catalyzed isotopic exchange module, where the tritium is extracted from tritiated heavy water... Autori: Sorin Gherghinescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25787
INFLUENCE OF SOME PARAMETERS ON NITRATE REMOVAL FROM WATER BY PUROLITE A-520E RESIN
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:In this study, removal of nitrate from aqueous solutions was investigated using an anion exchange resin, Purolite A-520E. Theinfluence of several experimental parameters, such as initial solution pH, resin dosage, phase contact time, initial concentration ofnitrate ions from aqueous solution, and temperature, has been examined in batch experiments. The results of this investigationreveal that the ion exchange process is favored at the initial solution pH (around) 6.8. The resin studied ... Autori: Anca Ceica, Igor Creţescu, Ion Balasanian, Laura Bulgariu, Liliana Lazăr ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25788
BIOLOGICAL AIR TREATMENT EFFICIENCY OF A STRAW BIO-CHARGE
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:Experimental research evaluated the possibilities of air treatment efficiency of a cylindrically shaped bio-charge, namely straw, toremove volatile organic compounds from the air. As determined during experiments, the air treatment efficiency of the straw biochargefor acetone removal reached 97.3%, while for butanol removal the efficiency was 86.0%. It has been determined that, withvolatile organic compound concentrations increasing biological air treatment efficiency is decreasing as h... Autori: Alvydas Zagorskis, Petras Vaitiekunas, Pranas Baltrenas, Raimondas Leopoldas Idzelis, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25790
USE OF D2EHPA-IMPREGNATED XAD7 RESIN FOR THE REMOVAL OF Cd(II) AND Zn(II) FROM AQUEOUS SOLUTIONS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:The adsorption performance of a novel support for metal ions sorption and their removal from aqueous solutions was examined.The support is a new solvent-impregnated resin (SIR) which can be considered as an alternative adsorbent material capable ofselective sorption. The adsorbent was prepared by impregnating di-(2-ethylhexyl)-phosphoric acid (D2EHPA) onto AmberliteXAD7 resin beads, by dry impregnation method. The interaction between XAD7 resin and D2EHPA was evaluated by FTIRspectrosco... Autori: Adina Negrea, Adriana Popa, Cornelia Muntean, Corneliu Davidescu, Lavinia Lupa, Mihaela Ciopec, Petru Negrea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25793
BIOMIMETIC HYDROXYAPATITE COATING ON C.P. Ti AND Ti-6Al-4V ALLOY BY ACID AND ALKALI TREATMENT
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:Titanium metal and its alloys have been widely used as implants under load-bearing conditions due to their biocompatibility, excellent corrosion resistance and lightness, but their inability to bond to living bone is a setback. The experiments outlined here investigated hydroxyapatite (HA) coating on Ti metal implants, used to enhance their bioactive properties. In this study, specimens of commercially pure titanium (c.p. Ti) and Ti-6Al-4V were etched in either H3PO4 or HCl, and subsequ... Autori: Chao-Lun Fu, Hsueh-Chuan Hsu, Shih-Ching Wu, Shih-Kuang Hsu, Wen-Fu Ho ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25795
REMOVAL OF Cd (II) FROM AQUEOUS SOLUTION BY ADSORPTION ONTO COIR PITH, AN AGRICULTURAL SOLID WASTE: BATCH EXPERIMENTAL STUDY
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:Coconut coir pith, an agricultural solid waste was used for the sorption of Cd (II) from aqueous solution in batch mode. Parameters like contact time, adsorbent dosage and pH effect were studied. Langmuir and Freundlich isotherms were used to model the adsorption equilibrium data and the system followed both the isotherms. Cd (II) adsorption capacity of coir pith was found to be 18.72 mg/g. Kinetic parameters of adsorption such as the Langergren pseudo-first-order, pseudo second order r... Autori: Nagendra Badabhagni, Puthiya Veetil Nidheesh, Rajan Gandhimathi, Srikrishnaperumal Thanga Ramesh ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25800
CHARACTERIZATION AND TESTING OF THE MAGHEMITE NANOPARTICLES USED FOR REMOVAL OF HEXAVALENT CHROMIUM FROM AQUEOUS SYNTHETIC SOLUTIONS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:The paper refers at adsorption studies using the maghemite nanoparticles as adsorbent for removal of the hexavalent chromium from aqueous synthetic solutions. Adsorption reached at equilibrium within 10 minutes and was registered as maximum at pH 2.54. The adsorption data were analyzed and fitted by Langmuir isotherm. Investigation methods for characterization of the nanoparticles were X-ray diffraction, scanning and transmission electron microscopy. Also, in order to evaluate the hexav... Autori: Andra Mihaela Predescu, Andrei Predescu, , Eugeniu Vasile ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25805
USE OF ARTIFICIAL NEURAL NETWORK FOR PREDICTION OF COAGULATION/FLOCCULATION PROCESS BY PAC IN WATER TREATMENT PLANT
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:The paper presents the results of a study carried out using the Artificial Neural Network (ANN) for prediction the coagulation/flocculation process of suspended solids in water treatment plant (WTP). In this research 5 kinds of Poly Aluminum Chloride (PAC) as coagulant were used to examine the impact of coagulant kinds, PAC dosage and influent turbidity for removal of suspended solids. Determination of optimal coagulant doses is vital, as insufficient dosing will result in undesirable t... Autori: Gagik Badalians Gholikandi, Mohammad Delnavaz, Reza Riahi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25806
EFFECT OF ORGANIC CARBON LOADING (OCL) ON SIMULTANEOUS NH4 +-N AND Mn2+ REMOVAL IN DRINKING WATER USING A BAF SYSTEM
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:The effect of organic carbon loadings (OCLs) on NH4+-N and Mn2+ removal was investigated using a novel approach of biological aerated filter (BAF) for drinking water treatment system. Three different OCLs of 0.2, 0.5 and 1.0 kg COD/m3.d were loaded into BAF which was operated in batch-wise at 24 h hydraulic retention time. The experiments resulted in higher COD, NH4+-N and Mn2+ removal percentages at OCL of 1.0 kg COD/m3.d with removal of 97.1%, 97.4% and 94.7%, respectively. The +-N ef... Autori: Hassimi Abu Hasan, Noorhisham Tan Kofli, Siti Kartom Kamarudin, Siti Rozaimah Sheikh Abdullah ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25808
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
PHOSPHATE REMOVAL FROM WATER AND RECOVERY USING IRON (Fe+3)OXIDE/HYDROXIDE NANOPARTICLES-BASED AGGLOMERATES SUSPENSION (AggFe) AS ADSORBENT
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 An iron(Fe+3) oxide/hydroxide nanoparticles-based agglomerates (AggFe) suspension adsorbent was synthesized for efficient, cost-effective phosphate removal. A strong effect of AggFe concentration and pH level of water containing phosphate on removal efficiency was shown. It was found that phosphate adsorption onto the AggFe suspension may be described by pseudo-secondorder reaction kinetics and the Langmuir isotherm model. The unique adsorption properties of synthesized AggFe adsorbent are demon... Autori: Grigori Zelmanov, Raphael Semiat ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25829
PREDICTIVE MODELLING OF ENVIRONMENTAL NOISE LEVELS IN LITHUANIAN URBAN AREAS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 Modelling of environmental noise is a process aimed at estimating the noise levels in an area of interest under a particular set of conditions. The aim of the work is to evaluate the impact of the planned reconstruction work on the change of noise level in Panevė??ys city. The software MapNoise was used for modelling work. Strategic noise maps are updated on a regular basis and information dating back not more than three years will be used for their build. Values of emissions from each indi... Autori: Egidijus Petraitis, , Petras Vaitiekūnas, Raimondas Leopoldas Idzelis ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25830
COMPARISON BETWEEN RADAR ESTIMATED AND RAIN GAUGE MEASURED PRECIPITATION IN THE MOLDAVIAN PLATEAU
Environmental Engineering and Management Journal › Vol. 11 › Nr. 4 Heavy rainfall events have produced significant damages and casualties in the Moldavian Plateau (Romania) in the last decades. Such phenomena are characterized by large spatial and temporal variations, and the forecast of their occurrence is thus very challenging. This study aims to compare the radar estimations and the rain gauge measurements, in order to improve the quantitative precipitation estimation (QPE) in the area of interest. The research uses data from the WSR-98D (Weather Surveillanc... Autori: Alexandru Dumitrescu, Aurora Bell, Bogdan Antonescu, Sorin Burcea, Sorin Cheval, Traian Breza ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25940
COMBINED OXIDATION AND ULTRAFILTRATION PROCESSES FOR THE REMOVAL OF PRIORITY ORGANIC POLLUTANTS FROM WASTEWATERS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 This paper presents a study on the integration of two advanced treatment processes for the removal of priority organic processes from wastewaters: catalytic oxidation (Fenton homogenous process) followed by ultrafiltration. The aim of this study was to assess the removal efficiency for 4-chlorophenol (used as model pollutant), as well as the decrease in effluent toxicity in various processes conditions. The experiments have mainly focused on studying the effect of the oxidant dose of the catalyt... Autori: , Cezar Catrinescu, Corina Petronela Musteret, Daniela Arsene, George Barjoveanu, Petru Apopei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25834
Environmental Engineering and Management Journal 10/12
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 â? SUSTAINABILITY IN ENVIRONMENTAL REMEDIATION
â? EVALUATING THE CLIMATIC CHANGES IN THE HYDROLOGICAL FLOW REGIME OF THE MOLDAVIAN AREAS
â? ENSURING ECONOMICAL AND FINANCIAL SUSTAINABILITY: STATE FISCAL CONTROL - A WAY TO PREVENT AND REDUCE TAX AVOIDANCE
â? COMBINED OXIDATION AND ULTRAFILTRATION PROCESSES FOR THE REMOVAL OF PRIORITY ORGANIC POLLUTANTS FROM WASTEWATERS
â? THE FREE LEVEL UNIFORM POST-DARCY FILTRATION THROUGH A SPHERE-MADE HOMOGENOUS MEDIUM
â? 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 â electrostatic ... Autori: Catalin Balan, Doina Bilba, Irina Volf, Matei Macoveanu, Petru Bulai ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25849
EQUILIBRIUM AND KINETICS STUDY OF NITRATE REMOVAL FROM WATER BY PUROLITE A520-E RESIN
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 Equilibrium and kinetics of nitrate removal from aqueous solutions of pH = 6.8 were investigated using the strong base anion exchange resin (Purolite A-520E) in the batch method. The experimental equilibrium data were analyzed by means of the Langmuir, Freundlich and Dubinin-Radushkevich sorption isotherm models. The Langmuir model describes sorption isotherm of nitrates with high correlation coefficients and better than Dubinin-Radushkevich and Freundlich models. The effect of temperature on th... Autori: Anca Ceica, Igor Creţescu, Ion Balasanian, Laura Bulgariu, Liliana Lazăr ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25851
CONTROLLING THE ACTIVITY AND CHEMOSELECTIVITY IN THE CINNAMALDEHYDE HYDROGENATION BY INSERTION OF NONNOBLE METALS IN THE MATRIX OF HYDROALCITE-LIKE MATERIALS
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 The purpose of this study was to prepare new nanocomposite catalysts of Metal/LDHs type by mild reduction of transition metal cations Co2+ and Cu2+ substituted in the matrix of ZnAl-LDH at 150°C and atmospheric pressure, under hydrogen flow. To this end, a series of ZnCuCoAl layered double hydroxides (LDH) precursors were synthesized by co-precipitation method. M2+/M3+ (i.e., Zn2+/Al3+) molar ratios were kept constant while the Cu2+/Co2+ molar ratios were varied in order to investigate their in... Autori: Adrian Ungureanu, Alexandra Sasu, Alexandru Chirieac, Alina Moscu Corcodel, Brindusa Dragoi, Constantin Rudolf, Emil Dumitriu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25852
FOOD CHAIN BIOMAGNIFICATION OF HEAVY METALS IN SAMPLES FROM THE LOWER PRUT FLOODPLAIN NATURAL PARK
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 Pollutants transfer via the food chain was investigated in a wetland ecosystem from the Lower Prut Floodplain Natural Park in Romania. Trace elements (Cd, Cu, Pb and Zn) were determined by Inductively Coupled Plasma â Optical Emission Spectrometry (ICP-OES) from samples belonging to primary producers and primary and secondary consumers, and also from water and sediments samples. Non-essential trace elements as Cd and Pb exhibited low concentrations in molluscs and fish, but zinc had shown conc... Autori: Alin Tudorache, Gabriel Chisamera, Gabriel Lucian Radu, Iulia Gabriela David, Laurentiu Rozylowicz, Marius Lucian Matache ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25855
THE IMPACT OF ORGANIC AND MINERAL FERTILIZERS ON THE YIELD AND MINERALS CONTENTS OF Fabaceae FROM PERMANENT GRASSLAND
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 This paper presents original studies about the influence of mineral and/or organic fertilization on the minerals contents (P, Na, K, Ca, Mg, Fe, Mn, Zn, Cu, Ni and Pb) in leguminous plants from permanent grassland situated in a hill area of Banat County. Determination of minerals in grassland is very important both for the nutritional or toxic effects of these elements and their compounds, in the plants, animals and environment. Phosphorous was analyzed colorimetric and all the others metals hav... Autori: Alexandru Moisuc, Iosif Gergen, Monica Harmanescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25858
LEVELS OF METALS AND ORGANOCHLORINE COMPOUNDS IN SEAFOOD CONSUMED IN CLUJ-NAPOCA, ROMANIA
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 Marine species (n=36) available in a supermarket of Cluj-Napoca city, Romania were collected and analyzed for the levels of heavy metals (Cr, Cu, Zn, Cd, Pb, Hg) and As, polychlorinated biphenyls (PCBs), and organochlorine pesticides (OCPs), such as dichlorodiphenyltrichloroethane (DDT) and analogous, hexachlorocyclohexanes (HCHs) and hexachlorobenzene (HCB). The collection included samples from twelve fish groups (sardine, tuna, herring, pangasius, marbled rockcod, hake, shrimp, pink shrimp, lo... Autori: Adriana Gog, Claudiu Tanaselia, Ioan Ştefan Groza, Marin Senila, Mirela Miclean, Oana Cadar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25863
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
EVALUATION OF ATMOSPHERIC POLLUTION BY USING NATURAL LOW-COST SORBENTS
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 In this study, we have tested the possibility of utilization of three types of natural low-cost sorbents: (Sphagnum moss peat, natural moss peat and alkaline treated moss peat) for the active biomonitoring of air quality from Căliman National Park area (Dorna Basin), during of two months (September â October 2010). The concentrations of some heavy metals (Pb, Cd, Cu, Mn and Fe) in the sorbent samples were used as an indicator of the level of air pollution in the studied region. After expo... Autori: Iulian-Ovidiu Sandu, Laura Bulgariu, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25868
REMOVAL OF Cd(II) IONS FROM AQUEOUS SOLUTION BY RETENTION ON PINE BARK
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 Among the different types of waste products tested, the bark of different Pinus species have been identified as a promising class of low- cost sorbents for heavy metal binding. In this context, the potential of Romanian pine bark wastes as green and economical sorbent for cadmium (II) ions removal from aqueous solutions has been tested in batch conditions as function of initial pH, contact time, sorbent dose, metal ion concentration and temperature. The equilibrium data at three different temper... Autori: Anca Miron, Brindusa Robu, Carmen Paduraru, Lavinia Tofan, Roxana Laura Mihailescu Amalinei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25871
MONITORING AND ASSESSMENT OF HERBICIDES REMOVAL BY INDUSTRIAL WASTEWATER TREATMENT
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 Herbicides industry is a large consumer of water, as well as a major wastewater generator, its effluents contain priority organic pollutants in very high concentrations which have severe effects on human health and on the environment due to their toxicity and bio-recalcitrant nature, persistence in the environment and bioaccumulation. A vast number of herbicides and other priority organic pollutants have been found in wastewater effluents, surface water, and drinking water around the world. The ... Autori: Bianca Weinberg, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25874
INTEGRATED ULTRASONICATION-ULTRAFILTRATION PROCESS FOR THE TREATMENT OF TEXTILE EFFLUENTS: ASSESSMENT OF OPERATIONAL PARAMETERS
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 Nowadays, advanced wastewater treatment has become a stringent step for the removal of priority organic pollutants and many technologies have been proposed in order to achieve effluents with a superior quality for recycling or reuse purposes. This research is focused on the possibilities of using an integrated process, comprising 2 stages: the advanced oxidation process of ultrasonication and a membrane separation process, ultrafiltration. The main objective of the study is to assess the efficie... Autori: , Daniela Cailean ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25880
OPTIMIZATION PROCESS OF CADMIUM AND ZINC REMOVAL FROM SOIL BY PHYTOREMEDIATION USING Brassica napus AND Triticales sp.
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 In this paper, Cadmium and Zinc removal from soil by phytoremediation was investigated. The experiments were carried out with two types of plants, Brassica napus and Triticales sp. Response surface modeling and optimization of Cd and Zn removal rate was performed for each type of plant under controlled conditions, i.e. as a function of Cd concentration, Zn concentration and pH. Although the maximum heavy metal uptake (i.e. 2.4 % Cd removal rate and 1.80 % Zn removal rate, respectively) was obtai... Autori: Corneliu Pohontu, Gabriela Soreanu, Igor Creţescu, Matei Macoveanu, Paula Caraiman Cojocaru ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25881
IMPROVING SOIL QUALITY BY ADDING MODIFIED ASH
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 Fly ash and fly ash based zeolites are inorganics used for improving soil quality. In the current paper, the hydrothermal modification of fly ash was studied. Three methods have been employed for this purpose. The first method involved the use of an autoclave, where synthesis has been performed at a temperature of 120 0C and a treatment time of 4 to 8 hours. Within the second method, the modification of the ash at a temperature of 600 0C by fusion was carried-out. In this method, a mixture of as... Autori: Corneliu Munteanu, Daniel Bucur, Lacramioara Rusu, Maria Harja, Marinela Barbuta, Ramona Carla Ciocinta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25885
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
STUDIES ON THE BIOLOGICAL TREATMENT OF INDUSTRIAL WASTEWATER STREAMS
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 Two experimental periods have been undertaken to investigate the biodegradability of sewage streams (mainly regarding the organic substances) produced by a gas cartridge production, filling and distribution company. A sequencing batch reactor (SBR) was used for the laboratory examinations launched with municipal sewage sludge with a concentration of approx. 3 g MLSS/L. The various conditions in the reactors followed each other cyclically (fill, anoxic, aerobic, settle, draw) three times a day. T... Autori: Bence Fazekas, Karoly Reich, Krisztian Varga, Viktoria Pitas, Viola Somogyi, Zsuzsanna Banyai ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25902
EFFECT OF AERATION RATE ON DOMESTIC WASTEWATER TREATMENT USING AN INTERMITTENTLY AERATED SEQUENCING BATCH REACTOR (IASBR) TECHNOLOGY
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 Abstract Effects of the aeration rate on nutrient removal from synthetic domestic wastewater using an intermittently aerated sequencing batch reactor (IASBR) were studied at ambient temperature. Two aeration rates, 0.8 and 1 L air/min, were studied. At the aeration-rate of 0.8 L air/min, removals of COD, NH4+-N, total nitrogen (TN) and PO43--P were 84%, 96%, 75% and 99%, respectively. At the aeration rate of 1 L air/min, removals of COD, NH4+-N, TN and PO43--P were 90%, 99%, 70% and 66%, re... Autori: Liam G. Henry, Liwen Xiao, Xinmin Zhan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25941
CHARACTERIZATION OF NITRIFICATION PERFORMANCE AND MICROBIAL COMMUNITY IN A MBBR AND INTEGRATED GBBR-MBBR TREATING HEAVILY POLLUTED RIVER WATER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 Abstract A one-stage aerobic moving bed biofilm reactor (MBBR) (Reactor A) and a combined reactor (Reactor B) involving an anoxicgravel-bed biofilm reactor (GBBR) and an aerobic MBBR were applied to the treatment of heavily polluted river water. Reactorperformance was investigated throughout the experiment for almost 200 days and molecular techniques including PCR-DGGE,FISH/CLSM and FISH/FCM were used to reveal the evolutions of bacteria community, abundance of nitrifying bacteria and their... Autori: Linyun Gu, Xiangchun Quan, Yin Qian, Yuansheng Pei, Zhifeng Yang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25942
EFFECTS OF Fe(III) ON DISSIMILATORY FERRIC REDUCTION, NITROGEN AND PHOSPHORUS REMOVAL IN ACTIVATED SLUDGE PROCESS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 Abstract An activated sludge from SBBR (sequencing biofilm batch reactor) reactor filled with Fe0 as filler had been acclimated to Fe(III)rich environment aiming at secure an enrichment culture of iron-reducing bacteria. The dissimilatory Fe(III) reduction ability and its efficiency on the effect of nitrogen and phosphorous removal by dosing different Fe(III) under anaerobic condition were investigated. The mechanism was also proposed based on the results derived from the experiment a... Autori: Jie Li, Juanjuan Feng, Siyuan Zhai, Yae Wang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25943
ENHANCED NITROGEN REMOVAL FROM REJECT WATER OF MUNICIPAL WASTEWATER TREATMENT PLANTS USING A NOVEL EXCESS ACTIVATED SLUDGE (EAS) BASED NITRIFICATION AND DENITRIFICATION PROCESS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractIn this study, a novel excess activated sludge (EAS) based nitrification and denitrification process was developed using EAS toprovide nitrifiers and denitrifers for nitrogen removal from the reject water of a municipal wastewater treatment plant (MWWTP).This can achieve a significant reduction in the nitrogen (N) loading in wastewater treatment plants. The results show that theammoniacal-nitrogen (NH4+-N) and total nitrogen (TN) removal efficiencies were in the range from 74.7% to 93.1%... Autori: Wei Li, Xiaoxia Yang, Xinchao Guo, Yongzhe Yang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25946
AEROBIC SLUDGE GRANULATION FOR PARTIAL NITRIFICATION OF AMMONIA-RICH INORGANIC WASTEWATER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractPartial nitrification for the biological nitrogen removal (BNR) via nitrite has recently gained interest for treating high-strengthammonium wastewater with low organic matter content. However, stability of partial nitrification is still a challenge in activatedsludge system. In the present study, the technique of aerobic granulation was developed to produce granules for stable nitritation,treating ammonia-rich inorganic influent with 400 mg NH4+-N/L. The morphology, physical properties, ... Autori: An-Jie Li, Xiang-Chun Quan, Xiao-Yan Li, Zhi-Feng Yang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25947
TREATMENT OF AN ALKALINE BUTYL RUBBER WASTEWATER BY THE PROCESS OF COAGULATION AND FLOCCULATION - HYDROLYSIS ACIDIFICATION - BIOLOGICAL CONTACT OXIDATION - MBR
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractWastewater from butyl rubber production is causing an increasing environmental problem due to its large quantity and complexquality. In this paper, two types of wastewaters generated from rubber synthesis, i.e. alkaline wastewater (AW) and cleaning andflushing wastewater (CFW), were investigated. Coagulation and flocculation were firstly applied to remove suspended solids(SS) from the AW. By single factor experiment, the optimum operational conditions were obtained as pH 8, PAC dosage 40... Autori: Lujun Chen, Rui Liu, Wei Li, Wei Zheng, Yan Zhang, Ying Li ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25950
STRUCTURAL EVOLUTION OF HEAT-TREATED COLLOIDAL PYRITE UNDER INERT ATMOSPHERE AND ITS APPLICATION FOR THE REMOVAL OF Cu(II) ION FROM WASTEWATER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractIn this paper, we report a study on structural evolution, magnetic susceptibility and arsenic content of colloidal pyrite fromXinqiao deposits in Tongling, Anhui Province, China. The pyrite was treated under N2 atmosphere and charaterized with X-raypowder diffraction (XRD), field emission scanning electron microscopy (FE-SEM), magnetic susceptibility analysis, and atomicfluorescence spectroscopy (AFS). We observed that heating of colloidal pyrite in N2 atomosphere did not change the crys... Autori: Dong Chen, Ping Li, Tianhu Chen, Xiao Zhu, Yadan Shi, Yan Yang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25951
COMPOSITE VEGETABLE DEGRADATION AND ELECTRICITY GENERATION IN MICROBIAL FUEL CELL WITH ULTRASONIC PRETREATMENT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractVegetable waste was used as the fuel of a two-chamber microbial fuel cell (MFC) for simultaneous power recovery and wastedegradation. Effects of ultrasonic pretreatment, organic loadings, anolyte pH adjustment on the MFC performance wereinvestigated. Results showed that higher power generation and organic compounds removal efficiency were achieved in theMFCs with the vegetable waste pretreated with ultrasonication at >1.0W/mL compared to the un-pretreated control. A maximumvoltage of ... Autori: Kun Tao, Xiangchun Quan, Yanping Quan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25953
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
CHARACTERISTICS AND FEASIBILITY STUDY OF SEWAGE SLUDGE FOR LANDSCAPING APPLICATION IN XIAN, CHINA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractBy investigating the basic physicochemical characteristics, nutrients (nitrogen, phosphorus and potassium) and heavy metalconcentrations of the excess sludges from four wastewater treatment plant (WWTP) in Xian city, the feasibility of applyingsewage sludge to landscaping in Xi'an was studied. The results showed that the basic physicochemical properties of sewagesludge satisfy the requirement of most plants growth. The sewage sludges are rich of organisms, nitrogen and phosphorus, butre... Autori: Bohan Yin, Qin Zheng, Rixia Zhang, Sheping Wang, Xinan Liu, Zhengliang Yang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25964
A SPECIAL ISSUE ON RECENT ADVANCES IN WATER RESOURCE MANAGEMENT AND POLLUTION CONTROL: WITH SPECIAL FOCUS ON CHINA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 A fast economic development in China over thelast three decades has lifted hundreds of millions ofpeople out of poverty. However, an annual GDPincrease of over 10% due to the large scale industrialactivities and fast urbanization has released substantialamounts of pollutants into the environment and exertedtremendous pressure on local ecosystems. Although alarge amount of investment has been made by theChinese government and a series of efforts have beenmade by the environmental regulators, scie... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25965
RADIATION-INDUCED DECOMPOSITION AND POLYMERIZATION OF POLYVINYL ALCOHOL IN AQUEOUS SOLUTIONS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractPolyvinyl alcohol (PVA) is a typical refractory organic pollutant with low biodegradability and high molecular weight. Thispaper presents data on the radiolysis of PVA in aqueous solutions by using ionizing radiation. Response surface methodologywith Box-Benhken design of experiment was applied to analyze the interactions among initial concentration of PVA, absorbeddose, and initial pH of aqueous solutions on PVA removal efficiency. 9.4-89.4% PVA was removed based on differentcombination... Autori: Jianlong Wang, Jinping Tian, Lujun Chen, Shijun He, Weihua Sun ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25967
ENGINEERING CHALLENGES IN ADVANCED WASTEWATER TREATMENT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 8 AbstractWastewater streams and particularly industrial effluents tend to increase in volumes and to get more complex in terms ofpollution. Nevertheless, nowadays the focus is directed towards recycling or reuse of treated wastewater so as to close the wateruse loop. Advanced wastewater treatment allows these possible applications by achieving good quality effluent to suit the newpurposes, but the implementation of this treatment stage is a difficult task. This study gives an example on how to ap... Autori: , Daniela Cailean, Florina Ungureanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25971
INSTRUMENTS FOR INTEGRATED WATER RESOURCES MANAGEMENT: WATER QUALITY MODELING FOR SUSTAINABLE WASTEWATER MANAGEMENT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 8 AbstractThis study presents the development and use of a hydraulic-coupled water quality model for the simulation of BiochemicalOxygen Demand (BOD) concentrations in the Bahlui River, a small river located in northeastern Romania. This river experiencesthe typical pollution problems for many Romanian water bodies: heavy pollution from both diffuse and point sources, lowconnectivity to wastewater systems in rural areas and moderate removal of pollutants in municipal wastewater treatment plants.Th... Autori: , Claudia Cojocariu, Denie C.M. Augustijn, George Bârjoveanu, Ioan Crăciun ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25985
SOLID WASTE MANAGEMENT IN ROMANIA: CURRENT AND FUTURE ISSUES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractWaste management includes all activities of collection, transport, treatment, recovery and disposal of waste, includingsupervising of such operations. The framework law that regulates waste management activities in Romania is Law no. 27/2007,approving Government Emergency Ordinance no. 61/2006, amending and supplementing Government Emergency Ordinance no.78/2000 on waste regime. This legislation sets the responsibilities for waste management from generation to disposal, thepriorities in ... Autori: Constantin Mircea Orlescu, Ioana Alina Costescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26020
COMBINED CATALYTIC OXIDATION AND ADSORPTION OF PRIORITY ORGANIC POLLUTANTS FOR WASTEWATER RECYCLING
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractThe increased concentrations of priority pollutants in wastewaters have imposed the completion of conventional treatment withadvanced treatment stages (such as catalytic oxidation, membrane processes, adsorption, ion exchange, etc.) for their removal bychemical degradation and/or physical separation.In this study, 4-chlorophenol (4-CP) is proposed as model-pollutant for the priority organic pollutants present in syntheticwastewaters and several processes which can act as advanced treatme... Autori: Carmen Teodosiu, Corina Petronela Musteret, Daniela Arsene, Daniela Cailean, George Bârjoveanu, Petru Apopei, Roxana Elena Apreutesei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26022
COMPOSITE MATERIAL BASED ON SILVER-DOPED ZEOLITE AND MULTI-WALL CARBON NANOTUBES FOR HUMIC ACID REMOVAL
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractIn this paper the synthesis, characterization and testing of composite material based on multi-wall carbon nanotubes and silverdopednatural zeolite (MWCNT-ZAg) has been investigated for humic acid (HA) adsorption. The surface characterization of thecomposite material has been investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM/ EDX) analysis.The Langmuir and Dubinin-Radushkevich (D-R) models fitted the best experimental data informing that adsorption process ofH... Autori: Aniela Pop, Corina Orha, Florica Manea, Virgil Tiponut ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26023
REMOVAL OF TWO INDUSTRIAL DYES FROM AQUEOUS SOLUTIONS USING HYDROTALCITE-LIKE ANIONIC CLAYS AND THEIR DERIVED MIXED OXIDES AS HIGHLY EFFICIENT PHOTOCATALYSTS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractMultifunctional materials based on iron substituted anionic clays and their derived mixed oxides owning specific porousproperties and textural characteristics are synthesized, characterized and tested as photocatalysts in the process of the azo-dyesdegradation from aqueous solutions. The features of X-ray diffraction patterns point out the modification of the lattice parameterswhen Fe3+ is substituted Al3+ in the brucite like layer. N2 adsorption-desorption analysis reveals specific poro... Autori: Carmen Gherasim, Gabriela Carjă, Magda Puşcaşu, Mihaela Bîrsanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26024
KINETIC STUDY OF HEXAVALENT CHROMIUM REMOVAL FROM WASTEWATERS BY ION EXCHANGE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractIn spite of the fact that concern on water quality protection raised in the last decades heavy metals pollution still represents agreat threat for both human health and environment quality. Ion exchange proved to be an effective technique for industrialwastewaters treatment, as long as it ensures an effective recovery of valuable compounds. The main purpose of this work is toassess the performances of a commercial ion resin sort (a strong basic anionic resin VIONIT AT 21), to remove ch... Autori: Alexandra Raluca Miron, Cristina Costache, Cristina Modrogan, Dumitru Giani Apostol, Oanamari Daniela Butucea, Redha Kouachi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26025
COPPER IMPREGNATED ACTIVATED CARBON FOR THE TREATMENT OF SULPFUROUS WATERS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractThis paper deals with the experimental investigation related to removal of hydrogen sulfide from simulated groundwater byadsorption/oxidation on activated carbons. Carbonaceous adsorbents were synthesized from peach stones by physical-chemicalactivation method and modified by oxidation following impregnation with Cu2+ by ion-exchange method. Obtained carbonaceousadsorbents were characterized by specific surface area and micropore volume. Surface chemistry properties were evaluated usingB... Autori: , , Vasile Rusu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26026
SYNTHESIS OF NANOCRYSTALLINE ZnFe2O4 AND ITS USE FOR THE REMOVAL OF CONGO RED FROM AQUEOUS SOLUTIONS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractThe paper describes the synthesis of nanocrystalline zinc ferrite starting from 1,4-butanediol and a mixture of zinc and ironnitrates. During the heating of the obtained solution, a redox reaction takes place with emission of brown nitrogen oxides andformation of a solid powder. This powder was characterized by thermal analysis and FT-IR spectrometry, techniques thatconfirmed the formation of a mixture of zinc and iron carboxylates. This mixture was further used as precursor for zinc fer... Autori: Cornelia Muntean, Marcela Stoia, Paul Barvinschi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26029
KINETIC, EQUILIBRIUM AND THERMODYNAMIC STUDIES OF CESIUM REMOVAL FROM AQUEOUS SOLUTIONS USING AMBERJET UP1400 AND AMBERLITE IR120 RESINS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractThe performance of two cation exchanger resins, Amberjet UP1400 and Amberlite IR120 in the process of Cs(I) ions removalfrom aqueous solutions was examined. Batch experiments were carried out to determine the influence of several parameters(resin dosage, contact time, temperature and initial concentration of Cs(I) ions) on the removal process. The equilibrium wasreached after 60 min for Amberlite IR120 and after 120 min for Amberjet UP1400, with an overall adsorption performance of~97% f... Autori: Adina Negrea, Cornelia Muntean, Corneliu Mircea Davidescu, , Mihaela Ciopec, Petru Negrea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26032
RECOVERY OF PRECIOUS METALS FROM WASTE ELECTRONIC EQUIPMENT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractPrinted circuit boards-PCBs are particularly rich in copper and precious metals. Recoveries of metals in our work started withtests for electrodeposition of Au, Ag and Cu from synthetic solutions on graphite and copper electrodes. Processes were studiedusing cyclic voltammetry in ranges: (-1200)-500 mV and (-800)-(-200) mV and (-400)-1400 mV. Different supportingelectrolytes like: H2SO4 0.5M, HCl 0.1M and HNO3 0.1M were used. Electrodeposition of studied metals from real solutions wasfol... Autori: Adina Căta, Cristian Tănasie, Daniel Boc, Firuţa Fiţigau, Mariana Nela Stefănuţ, Paula Sfîrloagă, Raluca Pop, Zoltan Űrmösi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26036
HYBRID MATERIALS FOR THE REMOVAL OF ORGANIC COMPOUNDS FROM WATER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractWater quality is an inportant concern for the ecosystem state from a particular region. Since the continuous urban and economicdevelopment induces a negative impact on entire hydrological cycle, this study investigates the water quality of a Romanian lake,located in the Surduc area - Timis County. This perimeter has undergone significant economic development in the past twodecades due to increased tourism potential and the number of holiday residences.We proposed hybrid materias for the ... Autori: Adina-Elena Segneanu, Cornelia Bandas, Florentina Cziple, Ioan Grozescu, Paula Sfîrloagă, Titus Slavici ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26040
Spirulina platensis AS BIOSORBENT OF ZINC IN WATER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractZinc is an important metal for humans and the environment. Its intensive application in industry has led to water and soilcontamination. A lot of microorganisms both unicellular and multicellular can be applied for removal of metals from theenvironment. The process of zinc adsorption by cyanobacteria Spirulina platensis biomass was investigated. The concentrationsof 0.34 mM and 3.4 mM of ZnSO4ˇ7H2O were used. The process of biosorption of zinc was studied during 1-hour experiment.To dete... Autori: Gheorghe Duca, Inga Zinicovscaia, Liliana Cepoi, Marina V. Frontasyeva, Sergey S. Pavlov, Svetlana F. Gundorina, Tatiana Chiriac, Valeriu Rudic ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26041
RESPONSE SURFACE METHODOLOGY APPLIED FOR THE OPTIMIZATION OF REACTIVE BLACK 5 DISCOLORATION IN A FENTON-LIKE PROCESS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractThere are many treatment methods used to remove color from textile wastewater, and Fenton oxidation, a well known AdvancedOxidation Process is one of the most efficient. Apart of Fe(II), other metal ions have been used as catalysts in Fentons Reagent,and Cu(II) proved to be a good alternative.In this study the effect of the concentration of dye, catalyst and hydrogen peroxide were studied and optimized for thediscoloration process of Reactive Black 5 using a Fenton-like process, H2O2/Cu... Autori: Andrei-Petru Bertea, Armand-Florin Bertea, Romen Butnaru ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26042
PHYTOEXTRACTION OF HEAVY METALS FROM INDUSTRIALLY POLLUTED ZONE USING Lolium perenne AND Lemna minor
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractThe paper intends to contribute to the stages of bioremediation technologies elaboration, by means of experiments and efficiencydemonstrations of adequate biological depollution and ecological reconstruction methods. During the 2009-2011 period, heavymetals and metalloids, etc phytoextraction tests were performed with Lolium perenne L, from tailing samples collected fromwaste heaps and tailings dams of the mining exploitations (Rodna, BistriţaNăsăud, Fundu-Moldovei, Sucea... Autori: Alexandru Crihan, Alin Bolonyi, Bianca Malschi Florian, Cecilia Roman, Dana Malschi, Dorian Brăhaiţa, George Ghira, , Marin Şenilă, Mirela Miclean ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26044
EFFECTS OF HEAVY METALS ON Lepidium sativum GERMINATION AND GROWTH
Environmental Engineering and Management Journal › Vol. 12 › Nr. 4 AbstractBasic principles for assessing phytotoxicity are the same whether the test compound is a heavy metal, herbicide, fungicide,insecticide or other toxic compounds. The difference lies not in the method of evaluation, but in the experimental program andworking methodology.In this paper the phytotoxic effects of heavy metals, Cr (VI) and Cd (II) on plants germination and growth were studied. Stocksolutions of the two heavy metals were prepared at a concentration of 1000 mg/L, in distilled wat... Autori: Dana Luminiţa Sobariu, , Maria Gavrilescu, Mariana Diaconu, Vasile Lucian Pavel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26062
PRELIMINARY TRIAL APPLICATION OF BIOLOGICAL DESULFONATION IN ANAEROBIC DIGESTORS FROM PIG FARMS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 4 AbstractThis paper describes preliminary tests carried out in treatment plants serving two different pig farms in Northern Italy, in order toassess the feasibility of implementing biological sulphur removal from biogas produced by anaerobic digestion processes. Thisnormally consists of mixture of CH4, CO2, and other gases; in the presence of sulphur, H2S is also formed, which must beremoved prior to the gas use in thermal engines, to avoid corrosion phenomena. Sulphur removal in the plants consi... Autori: Andrea G. Capodaglio, Arianna Callegari, Vincenzo Torretta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26074
ISOTHERM AND KINETIC STUDIES OF RESIDUAL OIL ADSORPTION FROM PALM OIL MILL EFFLUENT (POME) USING BOILER FLY ASH
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractThe removal of residual oil from palm oil mill effluent (POME) using boiler fly ash was studied in this paper, with focus on theadsorption isotherms and kinetic studies by measuring the residual oil concentration using UV-spectrophotometer. The percentresidual oil adsorbed decreased from 80% to 5% as contact time was increased from 10 mins to 120 mins but increased from2.74% to 72.98% as initial concentration of residual oil increased from 0.04812 mg/L to 0.2406 mg/L. Pseudo-second order... Autori: Jude C. Igwe, Stella N. Anioke, Uche Arukwe ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26078
INVESTIGATION OF ISOTHERMAL AND FIXED-BED COLUMN SORPTION OF Cu (II) ONTO ALMOND SHELL
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractThe present study reports the efficiency of almond shell as a cheap and available material for the removal of Cu (II) fromcontaminated aqueous solutions. The equilibrium experiments indicated that Cu (II) sorption obeyed the Langmuir isotherm at26, 40 and 55oC. The highest value of the maximum uptake (Qo) from the Langmuir equation was found 6.783 mg g-1 at 40oC.The various thermodynamic parameters such as ΔGo, ΔHo and ΔSo were also calculated. The values of ΔGo varie... Autori: Soheil Aber ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26080
STATISTICAL DESIGN OF EXPERIMENTS FOR THE Cr(VI) ADSORPTION ON WEED Salvinia cucullata
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractExperiments were designed to optimize the Cr(VI) adsorption on Salvinia cucullata. The significance of different adsorptionparameters along with their combined effect on the adsorption process has been established. A regression equation wasformulated by representing percentage of Cr(VI) adsorption as a function of different independent variables such as contact time,pH, adsorbate concentration and adsorbent dose. The insignificant terms were assessed through student t test and are remo... Autori: Saroj Sundar Baral ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26084
ELECTROCOAGULATION-TiO2 PHOTO-ASSISTED COMBINED SYSTEM APPLIED TO METHYL ORANGE WASTEWATER REMOVAL
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractCombined electrocoagulation (EC) and homogeneous phase TiO2 photo-assisted system were applied to methyl orange (MO)wastewater treatment. Optimum including current density, initial concentration of MO, TiO2 concentration, pH, solutionconductivity and electrode distance were investigated. 98% decolorization (initial concentration = 500 mg/L) was achieved in 30min with a current density of 125 A/m2, electrode distance of 2.5 cm, electrolyte KCl concentration of 0.5 g/L, initial pH of 6.86,... Autori: Yi Zhang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26090
INFLUENCE OF NITRATE LOAD ON SULFUR TRANSFORMATIONS IN THE RHIZOSPHERE OF Juncus effusus IN LABORATORY-SCALE CONSTRUCTED WETLANDS TREATING ARTIFICIAL DOMESTIC WASEWATER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractTwo laboratory-scale constructed wetlands planted with Juncus effusus were used to investigate the effect of nitrate load on thesulfur transformation dynamics related to the removal of organic carbon and ammonium. Organic carbon was removed at aconstant high mean level of 80% (inflow of 25 mg/L total organic carbon), irrespective of the nitrate load. In contrast, sulfatereduction responded immediately to the presence or absence of nitrate in an opposing manner, indicating a high abundanc... Autori: Shubiao Wu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26095
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
REDUCED UPTAKE OF Cd AND Pb BY Miscanthus sinensis x giganteus CULTIVATED ON POLLUTED SOIL AND ITS USE AS BIOFUEL
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
The cultivation of Miscanthus sinensis x giganteus on a polluted soil near Copsa Mica Romania has started in 2008. Since then
every March and August the roots and stems have been analyzed, showing a very low amount of heavy metals in the aerial parts
in February, when the harvesting takes place. The combustion properties of the material are similar to those of lignite, but
without sulphur and with low ash amount. Because cultivation of edible plants poses the risk of hea... Autori: Constantin Horia Barbu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26106
STUDY OF HEAVY METAL POLLUTION AND BIOACCUMULATION IN THE BLACK SEA LIVING ENVIRONMENT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
The Black Sea is seriously affected by a large range of pollutants, despite severe laws regarding the protection of sea ecosystems.
Heavy metals are among the most important xenobiotics from the environment, presenting also toxicity for humans.
The studies upon heavy metals have proven that the sediments have the highest concentrations and they can release metals back
to water and this fact represents a risk for the humans and aquatic ecosystem life.
The use of aquatic ... Autori: Oana Jitar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26112
RISK-BASED ANALYSIS OF AN INDUSTRIAL ROMANIAN SITE HISTORICALLY CONTAMINATED WITH HEAVY METALS AND TOTAL PETROLEUM HYDROCARBONS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
Contaminated land is a major problem and its remediation costs in Europe and the USA exceed 550 billion; however,
rehabilitation proceeds only at a slow pace. The normally high cost of remediation, along with the inefficient use of the available
funds, gives rise to a need for a method of effectively allocating remediation funds. Risk assessment based techniques sustain the
decision-making process regarding contaminated sites rehabilitation, along with cost/benefit analys... Autori: Ileana-Codruţa Stezar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26115
RESISTANCE OF YOUNG STRESSES CAUSED BY HEAVY METALS SUCH AS Cs AND Cd
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
Using lab experiments, the heavy metal tolerance of young ectomycorrhizal trees was assessed in two axenic systems, co-cultures
on germination medium and a sandwich technique system with Modified Melin-Nokrans medium. Sterilized seeds of the tree
species Scots pine (Pinus sylvestris) and Norway spruce (Picea abies) were inoculated with the ectomycorrhizal fungi Paxillus
involutus and/or Tricholoma vaccinum in media containing either 10 mM CsCl or 0.25 mM CdCl2. The behavio... Autori: Maria Lucia Bizo ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26119
AQUATIC PHYTOTOXICITY OF HEAVY METALS: Cu, Cd AND Zn ECOTOXICOLOGICAL TESTS WITH DUCKWEED PLANTS (Lemna minor)
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
Heavy metals are common contaminants of freshwaters and they can produce toxic effects on aquatic fauna and flora. The ions of
heavy metals existing in freshwaters are well known as toxicants for the aquatic organisms. Duckweed is an aquatic plant of
small size that floats on fresh water surface of lakes and marshes. The small plants are highly exposed to aquatic pollutants and as
a result they are very sensitive to the toxic effects. As consequence the duckweed plants are... Autori: Vasile Oros ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26122
EFFICIENCY OF FILTERS WITH DIFFERENT FILTERING MATERIALS: COMPARATIVE STUDY IN WATER TREATMENT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
In order to accomplish the water quality standards required for a specific use, the continental surface water is treated through a
sequence of operations and unit processes. The treatment technological flowsheets carry out, partially or totally, the removal of
various pollutants, every treatment step being used for improving one or more qualitative parameter. The treatment scheme is
specific to water source type and water use. One of the basic operations for water treatmen... Autori: Oana Tirtoacă Irimia ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26136
ENVIRONMENTAL RISKS OF WASTEWATER SLUDGE DISPOSAL
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
Using sludge with dangerous substances content as an agricultural fertilizer can provide risks for humans and all environmental
components. An important risk factor that had to be taken into account is the combination of sludge used as a fertilizer and
agriculture activities that has its own consequences.
In this paper, a risk evaluation for sludge disposal was elaborated. The most important risk factors in the studied case, wastewater
sludge used as an agricultural fer... Autori: Elena Manea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26141
APPLICATION OF A NEURO-GENETIC TECHNIQUE IN THE OPTIMIZATION OF HEAVY METALS REMOVAL FROM WASTEWATERS FOR ENVIRONMENTAL RISK REDUCTION
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
The reason for carrying out this research is related to the significant risk of heavy metals present in wastewater on the
environment and human health. The removal of heavy metal ions from aqueous solutions was performed in a batch system, using
peat (from Poiana Stampei, Romania) as adsorbent. The efficiency of the process was predicted with high accuracy (correlation
with experimental data more than 0.99) based on a feed-forward neural network with two hidden layers. The... Autori: Gabriel Dan Suditu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26150
EQUILIBRIUM STUDY OF Pb(II) AND Cd(II) BIOSORPTION FROM AQUEOUS SOLUTION ON MARINE GREEN ALGAE BIOMASS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
The biosorption of Pb(II) and Cd(II) ions from aqueous solution on marine green algae biomass (Ulva lactuca sp.) was studied in
batch systems, at initial solution pH of 5.0 and biomass dose of 8.0 g/L, considered as optimum experimental conditions. The
obtained results from experiments of a single-component biosorption were analyzed using Langmuir, Freundlich and Dubinin-
Radushkevich isotherm models. The Langmuir equation describe the biosorption isotherm of Pb(II) and Cd... Autori: Laura Bulgariu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26152
STUDY OF ECOLOGICAL INHIBITION OF SULFATE-REDUCING BACTERIAL ACTIVITY AND ASSOCIATED POPULATION SUCCESSION IN OILFIELD FLOODING WATER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractIn the conventional water flooding process of Daqing Oilfield in China, the occurrence of abundant sulfate-reducing bacterialpopulations has substantially affected the industrial production. This study was conducted from the perspective of ecologicalsuppression by operating anaerobic ABR reactors and dosing ecological inhibitors in a continuous-flow experiment. The practicaloperating efficacy was investigated and associated dynamic bacterial population succession was analyzed. Results sh... Autori: Bin-song Wang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26165
EXPERIMENTAL STUDIES ON THE EFFECTS OF DIFFERENT CARBON SOURCES ON PHOSPHORUS REMOVAL DURING DENITRIFYING PROCESS IN THE PARALLEL A2O-MBR SYSTEM
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractA novel parallel A2O-MBR system was developed in this study based on the theory of denitrification with phosphorus removal.By utilizing the denitrifying phosphorus accumulating bacteria (DPB), the carbon source in the influent could meet the needs ofboth the denitrification and dephosphorization processes. Therefore, the carbon source restriction in conventional A2O processeswas resolved. The proposed system was inoculated with the sludge collected from the secondary settling tank in a m... Autori: Liang Wang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26170
ASSESSMENT OF HEAVY METALS CONTAMINATIONS FROM SOLIDIFIED WASTE DRILLING MUD LANDFILLING POND IN ORDOS PLATEAU (SEMI-ARID REGION), CHINA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractThe solidified waste drilling mud has been landfilled into slurry ponds with impermeable layer at oil & gas field since 1990s. Thisarticle aims to elucidate the heavy metal contaminations from landfill ponds at semiarid region. The heavy metal concentration inthe waste and its potential mobility based on its binding forms was studied. Furthermore, the blocking effect of impermeable layer was used to elaborate the environmental effects of heavy metals. From the analysis, Cr was found ... Autori: Yun Ma ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26171
EXPERIMENTAL INVESTIGATION ON WET FLUE GAS DESULFURIZATION WITH ELECTROSTATICALLY-ASSISTED TWIN-FLUID ATOMIZATION
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractA wet flue gas desulfurization (WFGD) system adopting electrostatically-assited twin-fluid atomization injector was presented.Spatial distributions of the droplet sizes, velocity for different voltages were measured using limewater and SO2 removalefficiency for different voltages and Ca/S ratios were tested using limewater drops. The physical and chemical improvementmechanisms were analyzed using spray characteristics and double film theory. The analysis showed that electrostatically-ass... Autori: Zhentao Wang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26175
APPLICATION OF A DECISION SUPPORT SYSTEM TO THE TRANSPORT OF HAZARDOUS MATERIALS
Environmental Engineering and Management Journal › Vol. 12 › Nr.10 AbstractThe transport of hazardous substances is an essential economic activity because it represents a quite relevant percentage of thetotal goods transportation. The risk associated to such an activity is fundamentally related to the possibility of an accidenttriggering that may cause negative environmental and public health consequences. A recent example is the Viareggio accident(2009), which involved the blast of tank wagons containing liquefied petroleum gas (LPG) and caused more than thirt... Autori: Vincenzo Torretta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26200
LOW-COST TECHNOLOGIES FOR SAFE DRINKING WATER IN SOUTH-EAST ASIA: OVERVIEW AND APPLICATION TO THE NORTH OF VIETNAM
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractIn spite of the ambition of the Millennium Development Goals (MDGs), water supply and sanitation are still worryingly deficientin South-East Asia (SEA). Due to the rapid increase in population, increased urbanization and industrial activities, and absence ofa strong regulatory framework, water quality in this region is impaired due to the high levels of contamination. Because of thechallenge of providing safe drinking water from poor quality water sources, development of low-cost drinkin... Autori: Pham Thi Thuy ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26202
ADSORPTION KINETICS OF REMOVAL OF YELLOW LANASOL DYESTUFF USING GALLINACEOUS FEATHERS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractGallinaceous feathers are an abundant solid waste from the poultry processing industries, which poses disposal problems. Akinetic study dealing with the adsorption process of wool reactive dye, Yellow Lanasol 4G (CI Reactive Yellow 39), ongallinaceous (Gallus gallus, Cobb 500) feathers was carried out. The main research goals of this work were to evaluate theviability of using this waste as adsorbent and to study the kinetics of the adsorption process, using a synthetic effluent. Thechar... Autori: Sónia Adriana Figueiredo ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26203
STUDIES ON EXCESS SLUDGE REDUCTION AND MICROBIAL COMMUNITY GROWING IN A NOVEL A+OSA REACTOR
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractExcess biomass produced in the degradation processes of organic pollutants is creating environmental challenges for wastewatertreatment plants. The A+OSA system, a modification of the anoxic / oxic (A/O) process via insertion of a sludge holding tankinto a sludge return line, has been demonstrated to be capable of achieving simultaneous nutrient removal and sludge reduction.Here we report the results of an investigation aimed at evaluating the impact of the sludge holding tank on the bio... Autori: Li Jia ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26207
ADSORPTION OF LEAD AND COPPER FROM AQUEOUS SOLUTION USING UNMODIFIED WHEAT STRAW
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractPotential of unmodified Wheat Straw as an adsorbent for the removal of lead and copper was studied. Effect of pH, adsorbentdose, contact time and initial metal concentration on the removal of the metal ions were also investigated. Maximum removal oflead was found to be 43.55% by wheat straw under optimum conditions (pH=5, adsorbent dose=16g/L, contact time= 240minutes, metal concentration=100 mg/L). Unmodified Wheat straw removed 0.381 mg/g of lead. While 56.36% copper removalwas achieve... Autori: Mehwish Anis ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26209
KINETICS AND EQUILIBRIUM OF COPPER AND CHROMIUM IONS REMOVAL FROM AQUEOUS SOLUTIONS USING SAWDUST
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractThis work presents the removal of heavy metal ions (Cu2+ and Cr3+) from aqueous solutions with the use of pine (Pinus silvestris) sawdust. The experiments were conducted in a batch mode. Kinetic and equilibrium parameters of biosorption which are best described by pseudo-second order and Langmuir models were determined. The maximum sorption capacity at pH 5 and a temperature of 20°C for pine sawdust amounted to 21.47 mg/g for Cu2+ ions and 39.63 mg/g for Cr3+ ions, respectively.Therm... Autori: Anna Witek-Krowiak ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26210
REMOVAL OF ACID BLACK DYE BY PUMICE STONE AS A LOW COST ADSORBENT: KINETIC, THERMODYNAMIC AND EQUILIBRIUM STUDIES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractThe removal of Acid Black 1 dye was investigated by acid treated pumice stone as a low cost adsorbent, since acidicmodifications were expected to improve the sorption capacity. The main components of the considered adsorbent were SiO2 andAl2O3 and acid treated pumice shows irregular structure. The effect of various parameters such as the initial dye concentration,the contact time, the temperature and the pH were studied. An increase of the contact time, the initial dye concentration or a... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26211
ENHANCED REMOVAL OF FECAL BACTERIA BY ZINC-MODIFIED ZEOLITE IN AN INTERMITTENT MEDIA INFILTRATION SYSTEM
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractThe reuse of a wastewater treatment system was investigated using intermittent media infiltration (IMI) to evaluate the fecalcoliform (FC) removal efficiency with natural zeolite containing clinoptilolite from the state of San Luis Potosí, Mexico and itszinc-modified form (Zeo-Zn). The municipal wastewater, which was from Saltillo, Coahuila, Mexico, was treated for FC analysisfor four months. The physicochemical properties of zeolite were analyzed, and their behavior as filter media for ... Autori: Sasirot Khamkure ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26212
COAGULATION COMBINED WITH FENTON PROCESS FOR THE TREATMENT OF WATER-BASED PRINTING INK WASTEWATER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractWater-based printing ink has been used widely and perfectly in printing the packaging of food, drug, and wine products etc.However, due to the need of altering different colors of ink, most water-based printing ink wastewater was generated from theequipment cleaning process. Coagulation combined with Fenton process has been used for this kind of wastewater treatment inthis study, results showed that coagulation using polyaluminium chloride (PACl) as coagulant and ferrous sulfate (FeSO4) ... Autori: Xiangjuan Ma ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26214
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
REDUCING AMMONIA, CHEMICAL OXYGEN DEMAND AND COLOR FROM PRAWN POND WASTEWATER USING COMPOSITE MEDIA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractLow water quality due to high levels of ammonia, chemical oxygen demand (COD), abnormal pH, and undesirable water color isprevalent in many prawn ponds in Malaysia. A composite medium used in the treatment of prawn pond effluent was examinedfor the reduction of undesirable parameters. The composite medium is a mixture of limestone, activated carbon, zeolite, and ricehusk. Experiments were conducted under three different conditions, i.e., sole aeration, adsorption, and adsorption with pre... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26219
A NOVEL APPROACH FOR MODELING Cu2+ AND Zn2+ ADSORPTION FROM INDUSTRIAL LEACHATE BY PEANUT SHELLS
Environmental Engineering and Management Journal › Vol. 12 › Nr.12 AbstractIn this work the adsorption of Cu2+ and Zn2+ from industrial wastewater by peanut shells without any pretreatment wasinvestigated through optimization techniques such as a feed-forward back-propagation artificial neural network and a simplexalgorithm. The Levenberg-Marquardt algorithm was the best back-propagation algorithm, with a minimum mean squared error of0.000217 for Cu(II) and of 0.000229 for Zn2+. Mean square error on the validation set is used as an estimate for variance.Accordi... Autori: Başak Mesci ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26227
AN ECO SUSTAINABLE TECHNIQUE TO REDUCE CADMIUM AVAILABILITY TO AMARANTHUS CAUDATUS GROWN UNDER AGRICULTURAL WASTE AND FERTILISER AMENDED SOIL: GROWTH AND PHYSIOLOGICAL RESPONSE
Environmental Engineering and Management Journal › Vol. 12 › Nr.12 AbstractPresent study deals with a technology that reduces the cadmium(Cd) availability to the leafy vegetable Amaranthus caudatusfrom Cd contaminated soil (6 μg Cd g-1soil), amended with farmyard manure FYM, FYM+NPK and agricultural wastes (ricehusk; RH and saw dust; SD) at different doses (0.5 %, 2 %, 5 % and 10 %). Among all the doses 5 % was found to the best foreach amendment showing maximum reduction in phytoavailability of Cd hence better vegetable yield. At this dose the reductionin... Autori: Anita Singh ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26228
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
EXPERIMENTAL INVESTIGATION AND CFD SIMULATION OF THE HYDRODYNAMIC AND MASS TRANSFER CHARACTERISTICS IN A SPLIT-CYLINDER AIRLIFT REACTOR CONTAINING PETROLEUM-WATER MICRO-EMULSIONS
Environmental Engineering and Management Journal › Vol. 12 › Nr.12 AbstractIn this article, hydrodynamic parameters and overall Oxygen mass transfer coefficient of petroleum based micro-emulsions in anairlift reactor were investigated. Four different petroleum-in-water micro-emulsion systems containing kerosene, heavy naphtha,light naphtha and diesel as oil based were used with concentrations of 3% and 7 % (v/v). The experimental data were supportedby simulation results obtained from the Computational Fluid Dynamics (CFD) method. The CFD was properly able to si... Autori: Mostafa Keshavarz Moraveji ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26234
OPTIMIZATION OF PHOSPHATE REMOVAL FROM SYNTHETIC WASTEWATER BY BACTERIAL CONSORTIUM USING BOX-BEHNKEN DESIGN
Environmental Engineering and Management Journal › Vol. 12 › Nr.12 AbstractIn this work, a four factor three-level BoxBehnken factorial design based on response surface methodology (RSM) wasemployed to optimize the removal of phosphate from synthetic wastewater (mineral salts medium-MSM) by the bacterialconsortium (Bacillus sp. RS-1, Pseudomonas sp. YLW-7, Enterobacter sp. KLW-2). A mathematical model was then developedto show the effect of each medium composition and their interactions on phosphate removal. The effect of the lactoseconcentration (X1), pH (X2)... Autori: Krishnaswamy Usharani ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26235
PHOSPHATE REMOVAL BY ELECTROCOAGULATION PROCESS: OPTIMIZATION BY RESPONSE SURFACE METHODOLOGY METHOD
Environmental Engineering and Management Journal › Vol. 12 › Nr.12 AbstractIn this research, response surface methodology (RSM) was applied to model the effect of main operational variables includinginitial pH, initial phosphate concentration, current density and reaction time on phosphate removal by electrocoagulation. It wasfound that the decrease of initial pH and initial phosphate concentration, and the increase of current density and reaction time are beneficial for improving phosphate removal efficiency. According to the ANOVA (analysis of variance) resul... Autori: Mohsen Behbahani ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26237
OPTIMIZATION OF PROCESS FOR TOTAL RECOVERY OF ALUMINUM FROM SMELTING SLAG 1. REMOVAL OF SOLUBLE SALTS
Environmental Engineering and Management Journal › Vol. 12 › Nr.12 AbstractWashing black aluminum (Al) slag to obtain soluble salts is an important stage of the smelting slag treatment at technologicalprocess. This process is used to recover Al as a coagulant for water purification. This research aims at establishing the optimalconditions for washing (e.g. temperature (T), solid: liquid ratio (S : L), time, the recirculation waters in the system). The goal ofresearch was to determine: a) the removal with maximum efficiency of the soluble salts from black Al sla... Autori: Romanita Teodorescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26243
EXPLOITATION OF AN ANAEROBIC UP-FLOW COLUMN REACTOR (AUFCR) USING ACTIVATED SLUDGE BIOMASS FOR THE DECOLORIZATION OF DYES AND COD REDUCTION FROM TEXTILE WASTEWATER
Environmental Engineering and Management Journal › Vol. 12 › Nr.12 AbstractThe aims of this study were to investigate the performance of anaerobic up-flow column reactor (AUFCR) and immobilizedactivated sludge biomass (ASB) potential for the adsorption of dye drimarene Blue-K2RL (Db-K2RL) and removal of chemicaloxygen demand (COD) from textile wastewater (TWW). AUFCR with ASB at flow rate of 50 mL h-1 and hydraulic retentiontime (HRT) of 10 h showed 95% dye adsorption at pH 4 and 87% COD reduction at pH 6 while non-activated sludge (NAS)showed only 60% of adsor... Autori: Anwar Ahmad ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26246
UTILIZATION OF AGROINDUSTRIAL WASTE AND DAIRY WASTE IN SOLID STATE PRODUCTION OF LACTIC ACID
Environmental Engineering and Management Journal › Vol. 12 › Nr.12 AbstractThe abundant availability of solid agroindustrial waste, sugarcane bagasse from sugar mills and juice extraction units, can bepotentially beneficial for the production of fermentation based biochemicals, paper boards and power. However, its role incausing bagassosis, an acute respiratory disease among the personnel handling large dry deposits has also been detected. Disposal of liquid waste whey from dairy industries poses a formidable threat to the aquatic ecosystem due to high BOD and ... Autori: Manoj K. Ghosh ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26248
OPTIMIZATION OF PROCESS FOR TOTAL RECOVERY OF ALUMINUM FROM SMELTING SLAG 2. REMOVAL OF ALUMINUM SULFATE
Environmental Engineering and Management Journal › Vol. 13 › Nr. 1 AbstractThis paper continues the previous investigations regarding the technology for the Aluminum (Al) recovery as Al sulfate fromblack Al slag. Leaching is the next compulsory step in the Al extraction process. The paper studies the influence of mothersolutions´ (MS) recirculation resulted from the process within the system over the quality of Al sulfate and the siliceous residue(R) and, the aluminum nitride (AlN) hydrolyses in the leaching process. The optimum parameters determined are: *the ... Autori: Romanita Teodorescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26250
REMOVAL OF BIOPOLYMERS IN DISTILLERY SPENTWASH USING IRIDIUM OXIDE COATED TITANIUM MESH ANODE AND POLYALUMINUM CHLORIDE: OPTIMIZATION AND SEQUENTIAL STUDIES
Environmental Engineering and Management Journal › Vol. 13 › Nr. 1 AbstractThe purpose of the undertaken research work is to degrade the biopolymeric pigments present in the distillery spentwash. This isdone by direct electro-oxidation using iridium oxide coated titanium mesh as catalytic anode. The effects of current intensity,dilution, pH and time of electro-oxidation were studied. The combined effects were analyzed using Box-Behnken design foroptimization and statistical analysis. The rate constant for first order electrochemical kinetics relating the rate c... Autori: R. Krishna Prasad ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26253
ARTIFICIAL AERATION TO ENHANCE THE MINERALIZATION OF MONO AZO (METHYL ORANGE)-CONTAINING WASTEWATER USING RECIRCULATED UP-FLOW CONSTRUCTED WETLAND
Environmental Engineering and Management Journal › Vol. 13 › Nr. 1 AbstractThe aim of this study is to evaluate the treatment performance of mono azo dye Methyl Orange (MO)-containing wastewater byrecirculated up-flow constructed wetland (UFCW) with and without supplementary aeration. The successive anaerobic andaerobic treatment of the UFCW reactors could effectively remove color, organic matters and intermediate aromatic aminessimultaneously in a single reactor. With influent 50 mg/L of MO, the removal efficiencies of COD and MO were 91 and 75 %,respectively,... Autori: Soon-An Ong ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26254
REMOVAL OF DYE AND CHEMICAL OXYGEN DEMAND (COD) REDUCTION FROM TEXTILE INDUSTRIAL WASTEWATER USING HYBRID BIOREACTORS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 1 AbstractA bench-scale anaerobic bioreactor for the anaerobic treatment of textile wastewater using anaerobic sludge was experimented.The Top and bottom of hybrid bioreactor were functioned with UAF (Up Flow Anaerobic Filter) and UASB (Up Flow AnaerobicSludge Blanket), respectively. The effect of organic loading rate (OLR) and hydraulic retention time (HRT) on treatment oforganic matters in the textile wastewater was investigated. The maximum removal of chemical oxygen demand (COD) and colorwas 9... Autori: Reza Katal ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26255
LONG-TERM TREATMENT EFFICIENCY OF A HORIZONTAL SUBSURFACE FLOW CONSTRUCTED WETLAND AT JIMLÍKOV, CZECH REPUBLIC
Environmental Engineering and Management Journal › Vol. 13 › Nr. 1 AbstractThe present study is aimed at a long-term treatment performance of a constructed wetland with horizontal subsurface flow atJimlíkov, Czech Republic. The system was put in operation in 1993 and the treatment performance is evaluated for the period1998-2009 due to non-existence of results from the beginning of operation. The parameters of concern were BOD5 (biochemicaloxygen demand), COD (chemical oxygen demand), TSS (total suspended solids), NH4-N (ammonia-N) and TP (totalphosphorus). A t... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26258
OPTIMIZATION OF ANAEROBIC BAFFLED REACTOR (ABR) USING ARTIFICIAL NEURAL NETWORK IN MUNICIPAL WASTEWATER TREATMENT
Environmental Engineering and Management Journal › Vol. 13 › Nr. 1 AbstractThis study is focused on simulating and optimizing design and configuration of anaerobic baffled reactor (ABR) by means ofartificial neural network (ANN). This approach is aimed to assess an efficient ABR performance in various operational conditionstreating municipal wastewater. For this purpose, to analyze comprehensively on a base of experimental data, the system isoperated in two pilots of 48 liters net volume made of 8 compartments. In 7 months, more than 130 sets of data are obtain... Autori: Gagik Badalians Gholikandi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26260
POLLUTION WITH METALS (As, Sb, Hg, Zn) IN AGRICULTURAL SOIL LOCATED CLOSE TO ZARSHURAN GOLD MINE, IRAN
Environmental Engineering and Management Journal › Vol. 13 › Nr. 1 AbstractZarshuran As-Au deposit is the major ore deposit in northwest of Iran. Having been exposed to weathering, the accumulatedmining waste is consumed to deteriorate regional soil and water quality. Accordingly, 11 composite surface soil samples werecollected to evaluate the metallic pollution. Mean concentration of elements As, Sb, Hg and Zn were measured to be 234.9, 19.6,24.2 and 476.7 ppm, respectively. In comparison with mean earth crust and local guidelines for agricultural soil, the sa... Autori: Abdolreza Karbassi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26262
STUDY ON THE REMOVAL CHARACTERISTIC OF ACID VIOLET DYE FROM SYNTHETIC WASTEWATER USING A NOVEL RHA/PFA/CFA SORBENT
Environmental Engineering and Management Journal › Vol. 13 › Nr. 1 AbstractA novel RHA/PFA/CFA sorbent was developed by sol-gel method using three types of ashes, i.e. rice husk ash (RHA), palm oilfuel ash (PFA) and coal fly ash. From surface analysis of selected RHA/PFA/CFA sorbents, the spent sorbent had more compactstructures covered by irregular rough surface and the specific structure of raw RHA, PFA, and CFA were no longer visible. Inaddition, lower specific surface area was obtained for spent RHA/PFA/CFA sorbent. Batch studies were performed to evaluatet... Autori: Irvan Dahlan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26272
REMOVAL OF FLUORIDE IONS BY ION EXCHANGE RESIN: KINETIC AND EQUILIBRIUM STUDIES
Environmental Engineering and Management Journal › Vol. 13 › Nr. 1 AbstractThe extent of the problem of the excessive fluoride in drinking water remains an important health issue. In the present work,strong-base anion resins were investigated to assess their sorptive removal capacity of fluoride from water. It was found that theremoval of fluoride was high at natural pH (7) and was improved for increasing contact time and adsorbent dosage. Themaximum sorption of the resin was 13.7 mg/g according to the Langmuir model, namely higher than the values reported in t... Autori: Mohammad Taghi Samadi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26273
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
TREATMENT OF NYLON PRODUCTION WASTEWATER BY BIOLOGICAL ANAEROBIC FILTER IN COMBINATION WITH A/O PROCESS A CASE STUDY
Environmental Engineering and Management Journal › Vol. 13 › Nr. 2 AbstractThis paper presents the full-scale treatment of nylon production wastewater in a wastewater treatment plant in Henan province, Central China. In this case, a 9600 m3/d capacity wastewater treatment plant was installed to treat the wastewater generated from the production of nylon-66 salt, based on the biological anaerobic filter (BAnF) combined with an anoxic/oxic (A/O) process. The performance of the biological combined system was monitored over a 75-day period. The results revealed tha... Autori: Chunlian Xu, Haiming Huang, Jiankun Dai, Jianrong Qi, Qianwu Song, Shaowei Wu, Wenjun Wang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26276
INFLUENCE OF OPERATIONAL PARAMETERS ON ELECTROCOAGULATION PROCESS IN PULP AND PAPER MILL EFFLUENT TREATMENT
Environmental Engineering and Management Journal › Vol. 13 › Nr. 2 AbstractIn the present work an optimized experimental condition has been developed for the treatment of pulp and paper mill wastewater using an electrocoagulation process. The removal efficiency of 85 % COD and 94 % of color with a good repeatability of results (RSD <3%) has been achieved under the optimal experimental conditions of pH-7, treatment time of 2 h and a current density of 15 A/m2. In this study, wastewater from paper mill has been used and thus, high efficacy of removing the poll... Autori: Chhaya Sharma, Rajni Sharma, Satish Kumar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26281
STUDY OF Cd (II) AND Cr (VI) BIOSORPTION BY MESOCARPS OF ORANGE AND SOUR ORANGE FROM AQUEOUS SOLUTIONS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 2 AbstractThe objectives of this study were to investigate of cadmium and chromium adsorption from aqueous solutions by using orange (Citrus sinensis var Tampson) and sour orange (Citrus aurantium) mesocarp. The chemometric approach was applied for the optimization of removal percent of Cd2+ and Cr6+. To optimize Cd2+ and Cr6+ removal percent, the effect of four experimental parameters on removal percent was investigated by means of multivariate analysis. The considered factors were Cd2+ and Cr6+ ... Autori: Maryam Bagheri Ardebilian, Mohammad Ali Zazouli, Pouneh Ebrahimi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26287
REMOVAL OF As(III) AND As(V) FROM AQUEOUS SOLUTION USING MODIFIED SOLID WASTE VEGETABLE OIL INDUSTRY AS A NATURAL ADSORBENT
Environmental Engineering and Management Journal › Vol. 13 › Nr. 2 AbstractThis paper presents the results of the removal of arsenite and arsenate ions from an aqueous solution using Fenton modified solid waste vegetable oil industry (SWVOI). Several factors (such as pH, contact time and Fe2+/H2O2 ratio, initial arsenic ion concentration and adsorbent concentration) that affect the arsenic ion adsorption on the SWVOI adsorbent material were investigated. The sorption characteristics of the adsorbent material before modification were also studied and compared wi... Autori: Hoda Amiri, Mehdi Ahmadi, Nemat Jaafarzadeh, Susana Silva Martínez ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26290
MINIMIZATION OF CHEMICAL RISK BY USING RECOVERED ALUMINIUM FROM METALLURGICAL SLAG AS COAGULANT IN WASTEWATER TREATMENT
Environmental Engineering and Management Journal › Vol. 13 › Nr. 2 AbstractSecondary aluminium production inherently generates significant amounts of slag of variate composition and including dangerous compounds. Consequently, a care treatment of the resulted slag is imperatively necessary for preventing the environment pollution and for recovering valuable materials even if present in low amounts. The aluminium recovering procedure is based on a chemical and hydrometallurgical slag treatment, leading to the technical grade aluminium sulphate (AS), possible to ... Autori: Carmen Tociu, Cristina Maria, Elena Diacu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26295
ENVIRONMENTAL IMPACT AND RISK ASSESSMENT IN THE AREA OF PATA RÂT LANDFILL SITE, CLUJNAPOCA, ROMANIA
Environmental Engineering and Management Journal › Vol. 13 › Nr. 2 AbstractThis study aims to investigate the environmental impacts of the municipal waste disposal facility of Pata Rat, Cluj-Napoca, Romania during dry periods of the year. The environmental impact assessment on the landfill site was carried out on the basis of the measurements of environmental quality indicators. Environmental indicators were measured in the surface water, soil and air. For the assessment of the environmental impacts generated by landfill on surface water measurements were carri... Autori: Ákos Rédey, Anca Gurzau, Antoanela Popovici, Constantin Măruţoiu, Fazekas Bence, , Ildiko Varga, Raluca Mariana Haţegan, Tatiana Yuzhakova ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26296
BIOREMEDIATION CONTAINING WASTEWATER BY OF P-NITROPHENOL AEROBIC GRANULES
Environmental Engineering and Management Journal › Vol. 13 › Nr. 3 AbstractAerobic granulation is a novel biotechnique for the treatment of coloured wastewater containing toxic xenobiotics in sequencingbatch reactor (SBR). The aerobic granules were investigated as a potential biomaterial for biodegradation of p-nitrophenol. Theremoval efficiency of p-nitrophenol was 93 % after 65 days of operation at 8 hr hydraulic retention time (HRT). The aerobicgranules were cultivated at a p-nitrophenol loading rate of 0.9 kg m-3 day-1, with sodium acetate as co-substrate t... Autori: Pijush Kanti Mondal, Rais Ahmad ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26302
REMOVAL OF COLOR AND COD FROM AQUEOUS SOLUTION CONTAINING DYES BY ELECTROCOAGULATION IN A NEW CELL
Environmental Engineering and Management Journal › Vol. 13 › Nr. 3 AbstractA new cell design which makes an efficient use of the cathodically evolved H2 to improve the mixing efficiency and thefloatation ability during electrocoagulation was used to remove dyes from waste solution. In this study, the decolorization andCOD reduction of colored solutions containing reactive and basic dyes by electrocoagulation was investigated using aluminumelectrodes in a batch mode. The effect of operating parameters such as current density, initial dye concentration, NaClconce... Autori: El Sayed Zakaria El Ashtoukhy ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26303
FENTON AND PHOTO-FENTON OXIDATION OF SULFIDIC SPENT CAUSTIC: A COMPARATIVE STUDY BASED ON STATISTICAL ANALYSIS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 3 AbstractThis investigation compared the performance of Fenton and photo-Fenton oxidation processes in the treatment of sulfidic spentcaustic wastewater. Response surface methodology, particularly central composite design was used to investigate the effect ofFe/H2O2 and H2O2/COD in assessing treatment process efficiency. Empirical models were developed to describe the relationshipbetween the factors and responses. The models were validated through analysis of variance and were further used in pro... Autori: Azmi Aris, Mohd Ariffin Abu Hassan, Sharifah Hanis Yasmin Sayid Abdullah, Siti Fadilah Md Noor, Zainura Zainon Noor ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26307
ADSORPTION OF METHYLENE BLUE DYE ONTO SURFACE MODIFIED CASHEW NUT SHELL
Environmental Engineering and Management Journal › Vol. 13 › Nr. 3 AbstractIn the present study, batch adsorption experiments were performed for the removal of methylene blue (MB) dye from its aqueoussolution using newly prepared surface modified cashew nut shell (SMCNS) by varying the operating parameters like solution pH,adsorbent dose, initial dye concentration, contact time and temperature. The SMCNS has been prepared by treating the cashewnut shell with the sulphuric acid. Adsorption equilibrium data were analyzed by the model equations such as Langmuir,Fr... Autori: Krishnan Gayathri Lashmi, Muthukumar Priyadharshini, Ponnusamy Senthil Kumar, Ramasundaram Vijayakumar Abhinaya, Subramanian Sivanesan, Vishwanathan Arthi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26309
A COMPARATIVE STUDY ON REMOVAL OF FOUR TYPES OF ACID AZO DYES USING ELECTROCOAGULATION PROCESS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 3 AbstractThe paper compares the electrocoagulation performance during the removal of Acid Brown 14, Acid Yellow 17, Acid Blue 113and Acid Black 172 dyes from aqueous solutions. For this purpose, pH changes and effectiveness of main parameters includinginitial dye concentrations and current densities for the selected dyes were examined. In addition, effluent turbidity, energyconsumption and amounts of released aluminum were also investigated. The present work shows that Acid Yellow 17 removaleffic... Autori: Mahsa Taheri, , Mokhtar Arami ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26310
REMOVAL AND PRECONCENTRATION OF CADMIUM ON POLYSTYRENE-GRAFT-ETHYLMETHACRYLATE COPOLYMER
Environmental Engineering and Management Journal › Vol. 13 › Nr. 3 AbstractThe removal and determination of toxic heavy metal ions in aqueous solutions has been given much more attention over the pastfew years. In this paper, a removal and separation/preconcentration method for cadmium species on Poly S15-g-EMA100 (a kind ofpolystyrene-graft-ethyl methacrylate copolymer) in water samples was developed. Some experimental parameters, such assolution pH, sample flow rate, type and concentration of eluent, amount of adsorbent and effect of common matrix ions werein... Autori: Harun Ciftci ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26317
ASSESSMENT OF DISTRIBUTION CHARACTERISTICS AND CONTAMINATION WITH HEAVY METALS IN SURFACE SEDIMENTS OF LAKE CHAOHU, CHINA
Environmental Engineering and Management Journal › Vol. 13 › Nr. 3 AbstractThe distribution and fractionation of nine heavy metals (Cr, Co, Ni, Cu, Cd, Zn, V, Pb and As) in the sediments of Lake Chaohu,a shallow eutrophic lake, were investigated using the BCR sequential extraction procedure. The level of pollution attributed tothese nine heavy metals was evaluated employing the potential ecological risk index (RI) and geoaccumulation index (Igeo). Metalconcentrations in sediments ranged from 65.00~104.00 for Cr, 14.50~21.70 for Co, 28.50~50.90 for Ni, 25.40~51.... Autori: Beidou Xi, Fengyu Zan, Guangchao Zhao, Jing Su, Kevin M. Yeager, Shouliang Huo, Xiujuan Yu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26321
PERFOMANCE OF SINGLE-STAGE ROTATING BIOLOGICAL CONTACTOR WITH SUPPLEMENTAL AERATION
Environmental Engineering and Management Journal › Vol. 13 › Nr. 3 AbstractThe aim of this paper was to study the performance of a single-stage rotating biological contactor with supplemental aeration interms of removal efficiency of organic and nitrogen content. Research was based on fifteen samples collected during the fouryear period. The wastewater was low strength with maximal measured concentration of 362 mg COD/l, 100 mg NH4/l, and 324mg TSS/L. The maximal measured removal efficiency of COD (chemical oxygen demand) and TSS (total suspend solids) were71% ... Autori: Dragan Cvetkovic, Dusan Gordic, Milorad Bojić, Srdjan Stosic, Vanja Susterstic ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26322
DESIGNING AND TESTING A SEPTIC TANK FOR A SINGLE HOUSEHOLD
Environmental Engineering and Management Journal › Vol. 13 › Nr. 3 AbstractA septic tank is an essential part of the decentralized wastewater management system. The aim of the experiment described inthis paper was to evaluate the impact of the method of sampling and hydraulic retention time (HRT) on the performance of acircular three chamber septic tank and to design a septic tank for a single household with four residents and wastewater flowrateof 0.6 m3/d. It was found out that the difference between suspended solids (SS) and chemical oxygen demand (COD) remo... Autori: Ala Kirjanova, Mindaugas Rimeika, Regimantas Dauknys ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26329
INTEGRATED ENVIRONMENTAL PROTECTION AND WASTE MINIMIZATION IN THE AREA OF COPPER MINE BOR, SERBIA
Environmental Engineering and Management Journal › Vol. 13 › Nr. 4 AbstractThis paper discusses some environmental problems caused by the mine waste from the Copper Mine Bor in Serbia. The CopperMine Bor and the Smelter generated about 2x109 tones of waste materials, located in the vicinity of the Bor. They cover mining,flotation tailings and smelting slag wastes. The existing mine waste have been formed during a hundred-year-old of mining andmetallurgical activities in Bor. Also, new quantities of wastes (up to ten thousand tones) have been produced daily by u... Autori: Jovica M. Sokolović, Novica Milosević, Rodoljub D. Stanojlović ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26334
EFFECT OF MEDIUM NUTRIENTS ON Cr(III) REMOVAL BY Phanerochaete chrysosporium, Aspergillus niger AND Aspergillus oryzae
Environmental Engineering and Management Journal › Vol. 13 › Nr. 4 AbstractIn this work, the effect of the addition of some nutrients on fungal growth and removal of Cr(III) were investigated. Theconsidered fungi, isolated from real tanning factory environment were Phanerochaete chrysosporium, Aspergillus niger and A.oryzae. Firstly, the optimal conditions for fungal growth were determined as a function of pH, contact time, temperature andagitation speed. Secondly, the effect of the addition of some nutrients on fungal growth was examined. Without the addition ... Autori: Abdeltif Amrane, Mansur Zarrabi, Mohammad Noori Sepehr ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26337
REMOVAL AND RECOVERY OF LEAD (II) FROM SIMULATED SOLUTION USING ALGINATE IMMOBILIZED PAPAIN (AIP)
Environmental Engineering and Management Journal › Vol. 13 › Nr. 4 AbstractLead (II) can bind with papain at its active site, destroying the enzymatic activity. Papain a sulfhydryl protease has beenimmobilized in calcium alginate bead for the purpose of removal of lead (II) from industrial waste water. Effect of lead (II) onthe enzyme activity of immobilized papain, has been observed. A detailed kinetic study has been carried out and the data arefitted to different kinetic models. EDS (Energy Dispersive X-Ray Spectrometry) and desorption study suggest that meta... Autori: Aparupa Bhattacharyya, Parameswar De, Soumasree Chatterjee, Srabanti Basu, Susmita Dutta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26338
NICKEL AND IRON CONCENTRATIONS IN PLANTS FROM MINING AREA POGRADEC, ALBANIA
Environmental Engineering and Management Journal › Vol. 13 › Nr. 4 AbstractMetal concentrations in plants, soil and sediment were evaluated in the vicinity of a former iron/nickel enriching factory atPogradec, near Ohrid Lake in Albania. Metal levels were significantly higher in soil samples than in the corresponding plants.Iron concentrations in both soil and plants were much higher than the nickel ones. Lower plants (lichens, mosses and fungi) had ahigher uptake and accumulation of nickel, followed by water plants and non-cultivated (wild) plants. Iron levels... Autori: Dimitrios Bellos, Dimitrios Veros, John M. Halley, Lazaros Symeonidis, Sonila Llupo, Thomas Sawidis ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26340
REMOVAL OF PHOSPHORUS BY ION-EXCHANGE RESINS: EQUILIBRIUM, KINETIC AND THERMODYNAMIC STUDIES
Environmental Engineering and Management Journal › Vol. 13 › Nr. 4 AbstractThe removal of phosphorus by strongly basic anion exchanger was investigated. Removal efficiency increased with contact time,resin mass and initial solute concentration, while temperature showed a reverse effect. Equilibrium data were best fitted ontoLangmuir isotherm model (R2>0.99). Maximum sorption capacity of the resin was 66.22 mg/g, namely significantly higher thevalues reported in the literature. The Freundlich parameter (n = 4.3) and the Langmuir separation factor (RL = 0.067-... Autori: Abdeltif Amrane, Hamid Reza Ghaffari, Mansur Zarrabi, Mohammad Mahdi Soori, Mohammad Noori Sepehr, Saied Borji ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26343
REMOVAL OF Cu (II) IONS FROM AQUEOUS SOLUTION BY ADSORPTION ONTO ACTIVATED CARBON PRODUCED FROM Guazuma ulmifolia SEEDS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 4 AbstractGuazuma ulmifolia seeds activated carbon was modified by sulphuric acid to enhance the adsorption capacity for Cu(II) ions.This modified activated carbon produced from Guazuma ulmifolia seeds (GUAC) was investigated by observing the changes inits characteristics and the Cu(II) adsorption behavior. The prepared GUAC was characterized by BET, FTIR and SEM analysis.The kinetic data were analyzed using four adsorption kinetic models: the pseudo-first and pseudo-second order equations,intrapa... Autori: Muthukumar Priyadharshini, Palanichamy Baskaralingam, Palanichamy RajKumar, Ponnusamy Senthil Kumar, Selvaraj Dinesh Kirupha, Subramanian Sivanesan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26344
MICROCYSTINS REMOVAL BY COAGULATION AND CHLORINATION UNDER LABORATORY CONDITIONS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 4 AbstractToxic cyanobacteria are an emerging and increasing threat to public water supplies across the world. As a result,it is essential tominimize the risk from toxic cyanobacteria and their metabolites, and the key is to be vigilant and monitor for cyanobacteria andcyanotoxins throughout the source water and the treatment plant. The present study aims to verify the validity of the traditionalprocess of coagulation and chlorination to remove microcystins (MCs) in the Xinxiang water plant in Chi... Autori: Bang-Jun Zhang, Qiong-Qiong Ding, Wei-Hong Zhang, Xiao-Yu Li, You-Hai Xie ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26345
ECOLOGICAL RISK CAUSED IN SOIL BY HEAVY METALS IN THE WATER-LEVEL-FLUCTUATING ZONE OF A YANGTZE RIVER TRIBUTARY
Environmental Engineering and Management Journal › Vol. 13 › Nr. 4 AbstractThis paper discussed the potential ecological risk, homologous relativity and spatial distribution of heavy metals in the waterlevel-fluctuating zone (WLFZ) of the Xiao River, a tributary of the Yangtze River. The Cd, Cu, Pb and Zn contents in the WLFZsoil were analyzed via atomic absorption spectroscopy. The potential ecological hazards of the heavy metals were also evaluatedusing the classical Lars Hakanson potential ecological risk index method. The average Cd, Cu, Pb and Zn contents ... Autori: Chuan Fu, Dan Liu, Junjie Lin, Zhiguo Yu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26346
PROMOTING ENVIRONMENTAL TECHNOLOGY USING SANITARY TAX: THE CASE OF AGRO-FOOD INDUSTRIAL WASTEWATER IN SPAIN
Environmental Engineering and Management Journal › Vol. 13 › Nr. 4 AbstractThe discharge of industrial effluents is a growing concern for companies, policy makers and the sanitary water system due to thepossible damage to environment. In Spain, wastewater discharge made into the sewer network is regulated locally by the SanitaryTax (ST). Consequently, for the latter, regulation and cost differences exist. In this paper, the role of Spanish STs to promoteenvironmental protection through the treatment of industrial wastewater (IWW) is analyzed. The study is focus... Autori: Irene Carra, Isabel María Román Sánchez, José Antonio Sánchez Pérez ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26350
FACTORS AFFECTING BIOLOGICAL SULPHATE REDUCTION IN TANNERY WASTEWATER TREATMENT
Environmental Engineering and Management Journal › Vol. 13 › Nr. 4 AbstractA pilot scale Upflow Anaerobic Filter (UAF) treating tannery wastewaters was operated for 160 days. The UAF was fed with lowCOD/SO42- ratio (SO42- = 1810 mg L-1, CODtotal = 2530 mg L-1) for the investigation of sulphate and COD removal as a functionof substrates limitation and ammonia and sulphide inhibition. Sulphate-reducing bacteria (SRB) out-competed methanogenicbacteria due to the low influent COD/SO42- ratio, the high concentration of sulphide and the presence of inhibiting compoun... Autori: Alberto Mannucci, Claudio Lubello, Giulio Munz, Gualtiero Mori ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26353
ENHANCING DEWATERING CAPACITY OF SLUDGE RESULTED FROM THE MICRO-POLLUTED WATER STRENGTHENED PRETREATMENT BY POWDERED ZEOLITE
Environmental Engineering and Management Journal › Vol. 13 › Nr. 4 AbstractAmmonia pollution occurs frequently in urban water networks, which threatens the safety of water supply systems. Zeolite can beused for the removal of ammonium in the pretreatment of raw water for its peculiar adsorptive property to ammonium, but a largeamount of sludge from this measure could be a significant pollution source. In this work, the dewatering performance ofprecipitated sludge from the pretreatment of micro-polluted raw water was studied. Batch experiments of the simulatedco... Autori: Bairong Zhu, Hao Chen, Huaizheng Li, Zhenliang Liao ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26355
CLOUD POINT EXTRACTION PROCEDURE FOR FLAME ATOMIC ABSORPTION SPECTROMETRIC DETERMINATION OF HEAVY METALS IN SURFACE SEDIMENTS OF CHAOHU LAKE, CHINA
Environmental Engineering and Management Journal › Vol. 13 › Nr. 5 AbstractA cloud point extraction (CPE) procedure for the simultaneous preconcentration of trace amounts of Cd(II), Pb(II), Cu(II), Co(II)and Ni(II) ions as a prior step to their determination by flame atomic absorption spectrometry (FAAS) has been developed. Thisdeveloped method is based on the formation of hydrophobic complexes of these metals with the chelating agent 1-(2-thiazolylazo)-2-naphthol (TAN), which then are entrapped in situ into micellar media of non ionic surfactantoctylphenoxyp... Autori: Wanli Huang, Zhixia Zheng ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26357
KINETIC STUDY OF PHENOL REMOVAL FROM WASTEWATER OVER A 0.5% Pt/ γ-Al2O3 CATALYST IN A TRICKLE BED REACTOR
Environmental Engineering and Management Journal › Vol. 13 › Nr. 5 AbstractCatalytic wet oxidation (CWO) of phenol was studied in the present work. The effect of liquid hourly space velocity (LHSV),superficial gas velocity, reactor pressure, temperature and initial phenol concentration on phenols removal was investigated.Results showed that phenol conversion increased with increasing reaction temperature, reactor pressure, and superficial gasvelocity of oxygen, yet it decreased with increasing (LHSV). The results exhibited that the highest phenol conversion of(... Autori: Farah T. Jasim, Luma S. Ahmed, Mohammad F. Abid ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26381
ACCUMULATION AND DISTRIBUTION OF HEAVY METALS IN PLANTS WITHIN THE TECHNOGENESIS ZONE
Environmental Engineering and Management Journal › Vol. 13 › Nr. 5 AbstractThe effects of natural (soil properties) and technogenic factors (atmospheric pollution by harmful industrial discharges, soilcontamination) on accumulation of heavy metals in natural grasslands have been studied at monitoring plots located within theinfluence zone of Novocherkassk power station. Contamination of grass plants by Ni, Cd, Zn and Pb occurs at plots located nearthis station along the line of wind rose. They are contaminated with Pb and Cd through vehicular emission as well. ... Autori: Galina Motuzova, Saglara Mandzhieva, Sergey Kolesnikov, Svetlana Sushkova, Tatiana Bauer, Tatiana Minkina, Victor Chapligin, Yuriy Fedorov ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26384
AIRBORN SOILS POLLUTION RISK ASESSMENT NEAR OPEN - CAST IRON ORE MINES
Environmental Engineering and Management Journal › Vol. 13 › Nr. 6 AbstractAccording to the study results, the level of soil pollution with heavy metals in the northern part of Kryvyy Rih iron ore basin(Kryvyy Rih district, Ukraine) reach to moderately threating. In the southern part of Kryvyy Rih basin (Shyroke district,Ukraine) the level of soil pollution was between two assessments: moderately threating and permissible. The results of thestudy on buffer capacity of usual black soils show that the tested elements can be arranged in the following descend... Autori: Mykola Kharytonov ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26389
VARIATION OF ANNUAL, SEASONAL, NOCTURNAL AND DIURNAL CONCENTRATIONS OF GASEOUS AND PARTICULATE POLLUTANTS IN SIX AREAS OF BUCHAREST, ROMANIA
Environmental Engineering and Management Journal › Vol. 13 › Nr. 6 AbstractThe importance of air pollution for health results from the major role the air plays in preserving life. The air pollution is one ofthe most serious problems of the current society, both temporally and spatially. The air pollution of the environment is stronglyinfluenced by meteorological factors because of a complex combination of emission processes, transport, chemicaltransformations and the removal of pollutants through wet and dry processes. This study established a database on ozone... Autori: Gilda Rusu-Zagar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26391
COMPUTERIZED SIMULATION OF MINE VENTILATION NETWORKS FOR SUSTAINABLE DECISION MAKING PROCESS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 6 AbstractThe simulation of different situations that may occur in the operation of the mine ventilation network is performed on its virtualmodel, developed and optimized using dedicated software. Depending on the chosen scenario, on the network model are applieda number of changes (addition of new ventilation workings, addition / removal of branches and nodes, changes in aerodynamicparameters: pressure, air flow driven by the fan etc.), the ultimate goals being: to assess how the new model obtain... Autori: Marius Cornel Șuvar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26408
PROCEDURE FOR METAL CUTTING USING EXPLOSIVES, WITH LOW ENVIRONMENTAL IMPACT
Environmental Engineering and Management Journal › Vol. 13 › Nr. 6 AbstractResearches aim to develop new knowledge in the metal cutting field, using a relatively new technique with a low number ofapplications nationwide, namely the flexible explosive charge with cumulative effect for fast and precise cutting of metals. Theprocedure of cutting with explosives is a process that involves using and handling materials in their solid phase.This procedure isespecially applied in cases where materials are mostly metals and it uses a directed and controlled cumulative e... Autori: Ilie Ciprian Jitea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26410
IMPACTS OF ANTHROPOGENIC ACTIVITIES IN BACAU AREA UPON HEAVY METALS CONCENTRATION ON BISTRITA RIVER SIDES
Environmental Engineering and Management Journal › Vol. 13 › Nr. 7 AbstractThe main objective of the current research is to determine the content of heavy metals from the Bistrita river banks, respectivelyupstream of Bacau city, Romania, in Bogdan Voda area, and downstream of Bacau city. Because of their bio-accumulationtendency heavy metals can generate a negative impact on soil, as well as on certain physiological and biochemical indicators ofplants and animals metabolism. The selection of sampling points (upstream and downstream of Bacau city) took intoconsi... Autori: Cristian Radu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26436
REMOVAL OF HEXAVALENT AND TOTAL CHROMIUM FROM AQUEOUS SOLUTIONS BY PLUM (P. domestica L.) TREE BARK
Environmental Engineering and Management Journal › Vol. 13 › Nr. 8 AbstractThe main purpose of the present work was to evaluate the potential of plum (P. domestica L.) tree bark (PDB) to remove Cr(VI)and total chromium from aqueous solutions in batch systems. Experimental data showed that the Cr(VI) and total chromiumremoval capacity was dependent on operating variables such as PDB particle size, PDB pretreatment, solution pH, initial Cr(VI)concentration, and contact time. The mechanism of Cr(VI) removal by PDB implies two simultaneous processes: 1) the reducti... Autori: Perla Vianey Lopez-Nuńez ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26464
BIODEGRADATION OF THE HERBICIDE LINURON IN A PLUG-FLOW PACKED-BED BIOFILM CHANNEL EQUIPPED WITH TOP AERATION MODULES
Environmental Engineering and Management Journal › Vol. 13 › Nr. 8 AbstractA lab-scale packed-bed biofilm channel reactor that operates as a plug-flow system equipped with top aeration modules wasconstructed and evaluated. To assess the reactor performance a microbial community able to degrade linuron was used. Changingthe fluid flow rates and the linuron concentrations in the inflowing medium the volumetric loading rates of linuron (BV,L) weregradually increased from 0.29 to 14.93 mg/Lh. During the operation of the reactor, an airflow rate of 0.15 ą 0.05 L/min... Autori: Erick Marrón-Montiel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26465
SILICA IMPREGNATED WITH CYPHOS IL-101 FOR Cs+ ADSORPTION
Environmental Engineering and Management Journal › Vol. 13 › Nr. 8 AbstractA series of experiments were performed to quantify the adsorption of Cesium on Silica impregnated withtrihexyl(tetradecyl)phosphonium chloride (Cyphos IL-101). Non-radioactive cesium solution was used as a surrogate of theradioactive 137Cs. The obtained impregnated Silica with the studied ionic liquid was characterized through scanning electronmicroscopy, energy dispersive X-ray analysis and Fourier transform infrared spectroscopy in order to put in evidence that theimpregnation with the... Autori: Adina Negrea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26473
COMPARISON OF PHOTOCATALYTIC TREATMENT EFFECTIVENESS ON SEWAGE AND INDUSTRIAL WASTEWATERS
› › Nr. 8 AbstractWater samples from two types of sources: partially treated sewage generated by a medium-sized city, with a high quantity oftotal coliforms and partially treated industrial wastewater, which contained mostly petroleum products from refineries, weretreated using the same concentration of TiO2 catalyst, for different exposure periods. UV-Vis and fluorescence spectroscopicevaluation of the composition changes of wastewaters under non selective oxidation conditions (achieved by photocatalysis... Autori: Gabriela Pavelescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26474
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
HEAVY METAL BALANCE IN A HUNGARIAN MUNICIPAL SEWAGE TREATMENT PLANT
Environmental Engineering and Management Journal › Vol. 13 › Nr. 8 AbstractThe present study was undertaken to experimentally evaluate the heavy metal (HM) removal capacity of a municipal wastewatertreatment plant (WWTP) as a kind of mass balance. The aim of the work was to find a water or sludge stream in the WWTP thatcould be treated separately for heavy metal removal to maximize the same efficiency of the whole treatment technology.Although literature says that the HM content of sewage accumulates in the sewage sludge, the experimental results showed nocompl... Autori: Gábor Gulyás ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26477
MONITORING OF MERCURY FROM AIR AND URBAN DUST IN THE INDUSTRIAL AREA OF IASI MUNICIPALITY
Environmental Engineering and Management Journal › Vol. 13 › Nr. 8 AbstractThe present work is dealing with the identification of the mercury sources and the quantification of the mercury level in air andurban dust in the industrial area of Iasi municipality. A correlation between some meteorological indicators, atmospheric mercurycontent and the urban dust from the investigated area was pointed out, based on the real time measurements as well as spatialdistribution of other heavy metals in urban dust.The measurements of mercury level in air were carried out at... Autori: Oana Maria Tucaliuc ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26479
EFFECTIVENESS OF AIR TREATMENT USING A PLATE-TYPE BIOFILTER WITH A CAPILLARY SYSTEM FOR HUMIDIFICATION OF PACKING MATERIAL
Environmental Engineering and Management Journal › Vol. 13 › Nr. 8 AbstractIn this study a new generation of plate-type laboratory air treatment biofilter is applied for the removal of gaseous contaminantsfrom air. The packing material for the biofilter consists of porous plates arranged vertically one after the other to produce acapillary humidification effect. The porous plate is made of polymer to secure the stiffness of the plate. Birch fibre granulesthermally treated in a steam explosion reactor are fixed on both sides of the polymer board. The granules ar... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26480
COMBINED ULTRASONIC IRRADIATION AND AEROBIC BIODEGRADATION TREATMENT FOR OLIVE MILLS WASTEWATERS
› › Nr. 8 AbstractIn this study, the reduction of phenolic compounds and other organic pollutants from greenish black (GB) and dark brown (DB)olive mill wastewater (OMW) was investigated. Ultrasonic irradiation in combination with aerobic biodegradation was adoptedas the treatment technique. Operational parameters such as the duration of ultrasonic irradiation, ultrasonic power intensity andultrasonic frequency were tested to determine their effects on phenol, BOD, and COD degradations. It was found that ... Autori: Zakaria Al-Qodah ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26484
FTIR ANALYSIS OF ION EXCHANGE RESINS WITH APPLICATION IN PERMANENT HARD WATER SOFTENING
Environmental Engineering and Management Journal › Vol. 13 › Nr. 9 AbstractThe purpose of the present study is the comparative investigation of the calcium cations removal from aqueous solutions usingtwo strong acid cationic resins recommended during the last years for water softening. The performances of the two resins wereevaluated by the means of the cationic exchange capacity and the retention degree of the calcium cations. The evaluation of thetwo resins behaviour in the ion exchange process was performed by the means of the FTIR spectra recorded on the re... Autori: Liliana Lazar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26489
REMOVING TOXIC COMPOUNDS FROM WASTEWATER
Environmental Engineering and Management Journal › Vol. 13 › Nr. 9 AbstractThe paper presents a hybrid method for the advanced removal of low biodegradable organic compounds from water, bycombining the separation selectivity of the membrane with the oxidation efficiency of the photocatalytic process. The aim of thisstudy is to evaluate the performance of the hybrid method to remove toxic compounds from wastewater. The advanced oxidationprocess, based on a photocatalytic reactor with continuous recirculation, ultraviolet (UV) radiations and a membrane, was usedf... Autori: Cristina Orbeci ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26490
BORON-DOPED DIAMOND ELECTRODE-BASED ADVANCED TREATMENT METHODS FOR DRINKING WATER
Environmental Engineering and Management Journal › Vol. 13 › Nr. 9 AbstractIn this study, boron-doped diamond (BDD) electrode was tested in electrochemical oxidation and reduction processes using thesame vertical electrodes undivided cell in order to remove natural organic matter (NOM) and nitrogen compounds (NC) fromdrinking water. Boron-doped diamond-based electrochemical oxidation process has proven to be an efficient and versatilemethod suitable for NOM and NC in forms of nitrite and ammonium present in drinking water sources. However, the applicationof BDD... Autori: Florica Manea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26492
DYNAMICS OF A RHIZODEGRADATION PILOT UNIT TREATING GROUNDWATER CONTAMINATED WITH BISPHENOL-A
Environmental Engineering and Management Journal › Vol. 13 › Nr. 9 AbstractBisphenol-A (BPA; 2,2-bis(4-hydroxyphenyl)propane) is a monomer used primarily in the production of polycarbonate andepoxy resins that has been reported to have estrogenic activity. The biodegradability of BPA has been previously investigated inseveral studies designed to simulate surface waters and biological wastewater treatment systems. However, there is littleinformation available about the phytoremediation of groundwater contaminated with BPA. Halophytic species are of specialintere... Autori: Margarita A. Petoussi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26493
EXPLORATORY SPATIAL DATA ANALYSIS OF HEAVY METALS CONCENTRATION IN TWO SAMPLING SITES ON SIRET RIVER
Environmental Engineering and Management Journal › Vol. 13 › Nr. 9 AbstractThe study site is located on South of Bacau City, Romania, on two water courses: the Siret River the branch flowing throughthe old riverbed downstream Galbeni Reservoir, and one of its tributaries - an infiltration channel, both of them being used by thelocals for fishing and irrigation, and the common meadow for grazing. The study covers the right side of the Siret River, betweenthe interception point up to Galbeni Reservoir dam and the equivalent length of the infiltration channel. T... Autori: Maria Ema Faciu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26494
TOTAL AND DISSOLVED METALS OCCURRENCE IN MUNICIPAL WASTEWATER TREATMENT PLANT EFFLUENTS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 9 AbstractConcentrations of seven heavy metals (Cd, Cr, Cu, Fe, Ni, Pb and Zn) in the discharged effluents of four wastewater treatmentplants located on the Romanian Black Seacoast, evaluated as average values for four seasons, during 2010-2011 are presented.Total and dissolved metals occurrence was investigated from seasonal samples, to assess the bioavailability of the heavy metalsin the discharged effluents. The analytical measurements were performed by flame atomic absorption spectrometry (FAA... Autori: Elisabeta Chirilă ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26498
METAL UPTAKE IN WATER SPINACH GROWN ON CONTAMINATED SOIL AMENDED WITH CHICKEN MANURE AND COCONUT TREE SAWDUST
Environmental Engineering and Management Journal › Vol. 13 › Nr. 9 AbstractA pot experiment was conducted to evaluate the growth and metal accumulation in water spinach (Ipomoea aquatica) establishedon a 30-year old active firing range soil amended with chicken manure (CM) and coconut tree sawdust (CTS) at application ratesof 0%, 1% and 3% (w/w). Both amendments increased biomass yield and reduced plant metal uptake. The bioconcentrationfactor (BCF) and transportation factor (TF) values of the metals were in the order of Zn > Cu > Pb. The ammonium acetate... Autori: Azlan Kamari ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26499
PHONIC POLLUTION AND STRATEGIC ACOUSTIC MAPPING WITH GEOGRAPHIC INFORMATION SYSTEMS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 9 AbstractThe phonic pollution has become a more serious problem in the recent years, especially because of traffic increase. This kind ofpollution is generated by all kinds of means of transport. One of its peculiarities is the repercussion it has on people, unlike theother types of pollution, i.e.: water pollution, air pollution, soil pollution, which can affect, to a certain extent, the entireenvironment. The phonic pollution is considered to be the most widely spread type. The numerous surveys... Autori: Carmen Grecea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26500
DETECTION OF SOOT PARTICLES USING A RESISTIVE TRANSDUCER BASED ON THERMOPHORESIS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 9 AbstractA soot transducer based on the measurement of the electrical resistance value of the soot layer deposited on a finger structure wastested at different thermophoretic potentials. The soot, similar to that issued from the Diesel engines, in terms of particle numberand size distribution, was obtained by the incomplete burning of propane and subsequent dilution. The decrease of the resistancevalue in time was directly proportional with the temperature gradient. Thus a soot transducer is aime... Autori: Doina Lutic ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26503
CHALLENGING ANALYTICAL TASK: ANALYSIS AND MONITORING OF ARSENIC SPECIES IN WATER
Environmental Engineering and Management Journal › Vol. 13 › Nr. 9 AbstractAnalysis and monitoring of arsenic is still a challenging analytical task. Due to its complex behaviour (different forms of arsenicthat can be present depending on pH and oxidation states of arsenic) as well as demanding analytical procedures and instrumentaltools for control of arsenic concentration in drinking water which is set to 10 μg L1, there are still some open questions andissues when arsenic is the scientific topic. In this paper the idea was to use a multivariate statist... Autori: Vladana N. Rajakovic-Ognjanovic ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26506
ENVIRONMENTAL RISKS DUE TO HEAVY METAL POLLUTION OF WATER RESULTED FROM MINING WASTES IN NW ROMANIA
Environmental Engineering and Management Journal › Vol. 13 › Nr. 9 AbstractThe mining waste facilities in the Baia Mare region, Romania, resulted from the extraction of poly-metallic ores (including Au,Ag). Metal sulphide minerals from the mining waste facilities have a potential to produce acid rock drainage (ARD) and togenerate risk for the environment, including for the water resources. Some of the mining waste deposits from the region arelocated near the town of Baia Mare, close to the residential areas, the agricultural lands and the surface water. The sho... Autori: Oana-Cristina Modoi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26512
EFFECTS OF ALUMINUM AND LEAD ON THE DEVELOPMENT OF Rhizophagus irregularis AND ROOTS IN ROOT CULTURES
Environmental Engineering and Management Journal › Vol. 13 › Nr. 9 AbstractMost studies exploring the contribution of the mycorrhizal symbiosis to plant metal tolerance focus on plant-metal uptake anddisregard metal effects on the symbiotic fungi. We examined the tolerance of the model arbuscular mycorrhizal fungusRhizophagus irregularisto Al and Pb in vitro cultures with transformed carrot (Daucus carota L.) roots that exclude theinterference of other microbiota. We studied the development of roots and external mycelium of R. irregularis in monoxenic andaxenic... Autori: Mayra E. Gavito ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26516
ELECTROCHEMICAL RECLAMATION OF WASTEWATER RESULTED FROM PETROLEUM TANKER TRUCK CLEANING
Environmental Engineering and Management Journal › Vol. 13 › Nr. 9 AbstractPetroleum tanker trucks are integral vehicles for delivering fuel and other petrochemical products from place to place and must becleaned regularly. Pressure washing with hot or cold water serving to remove oil and filth from the tanker truck container,produces oily waste water with an oil concentration of about 300-500 mg L-1 which, according to environmental standards andregulations worldwide, must be disposed of and treated properly. In the present paper an integrated electrochemical ... Autori: Konstantinos Dermentzis ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26520
HEAVY METALS CONTAMINATION LEVELS IN PROCESSED MEAT MARKETED IN ROMANIA
Environmental Engineering and Management Journal › Vol. 13 › Nr. 9 AbstractAtomic absorption spectrophotometry (AAS) technique was applied in order to identify the occurrence of certain heavy metals insamples of pork products, such as bacon, ham, sausage and salami, taken from four commercial centers in Romania. Lead levelsin samples varied from 0.58 to 0.96 mg/kg, Cadmium values from 0.11 to 0.21 mg/ kg, Copper from 0.73 to 1.32 mg/kg, whileZinc levels were detected between 32.19 and 42.12 mg/kg. Lead, Copper and Zinc found in samples were lower than themaximu... Autori: Gabriel Vasile Hoha ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26522
OPTIMIZING THE NANOFILTRATION OPERATING CONDITIONS AS POST TREATMENT STEP IN THE GROUNDWATER DENITRIFICATION PROCESS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 9 AbstractTwo types of nanofiltration membranes had been used to study the influence of cross flow velocity on the membrane filtration ofdenitrification effluent (NF270 and NF90). Filtration had been conducted at constant transmembrane pressure of 5 bar andvariable cross flow velocity (0.03, 0.06, 0.15 and 0.39 ms-1). The obtained normal flux was 0.47, 0.58, 0.59 and 0.77for NF270membranes and 0.35, 0.38, 0.41 and 0.39 for NF90 membranes, the increase in cross flow velocity had enhanced fluxperfor... Autori: Abdel Halim Fuqaha ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26523
REMOVAL OF CADMIUM (II) FROM AQUEOUS MEDIA USING COOH/TUD-1 MESOPOROUS SOLID. KINETIC AND THERMODYNAMIC STUDIES
Environmental Engineering and Management Journal › Vol. 13 › Nr. 10 AbstractThe adsorption potential of 10 wt.% COOH/TUD-1 material for removing Cd2+ from aqueous solutions was investigated via thebatch technique, and the effects of pH, temperature and contact time were studied. Experimental data showed that the maximumCd2+ adsorption, 90%, occurred at pH 6. The adsorption equilibrium was reached within 35 min for 10 wt.% COOH/TUD-1. Theadsorption mechanism was investigated in terms of its thermodynamics and kinetics. The adsorption data were fitted using theLan... Autori: Nabila Bensacia ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26558
SOLUBILIZATION OF HEAVY METALS IN SLUDGE DURING SONICATION: IMPACT OF SONICATION TIME AND POWER DENSITY
Environmental Engineering and Management Journal › Vol. 13 › Nr. 10 AbstractHeavy metals in sludge have been one of the limiting factors for sludge reclamation, and therefore the changes of heavy metalsduring sludge treatment process should be concerned. This study investigated the detailed profile of changes of seven typicalheavy metals (As, Cd, Cr, Cu, Ni, Pb, and Hg) in the activated sludge during ultrasonic treatment process. The influences ofsonication time and ultrasonic power density were studied. Results showed that heavy metals in sludge were released i... Autori: Tian Wan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26563
LEACHING OF METALS FROM WASTE PRINTED CIRCUIT BOARDS (WPCBs) USING SULFURIC AND NITRIC ACIDS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 10 AbstractThis study aims to understand the acid-leaching behavior of metals from 2 to 4 mm waste printed circuit boards (WPCBs)containing 22.0% ą 1.1 Cu, 6.7% ą 0.2 Ca, 0.68% ą 0.02 Sn, 0.59 ą 0.01 % Pb, 2.71% ą 0.08 Al, 0.22% ą 0.01 Fe, etc..Copper leaching was increased for sulfuric acid concentrations up to 1.2 mol/L and hydrogen peroxide concentrations of 10.0vol% for a pulp density of 100 g/L at 50°C over 4 h, whereas for the same concentrations of sulfuric acid and hydrogen peroxidecopper l... Autori: Manoj Kumar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26566
DISTRIBUTION OF ADDED PHOSPHORUS IN SEDIMENT UNDER INTERMITTENT RESUSPENSION CONDITIONS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 10 AbstractThe incorporation of phosphorus (P) into sediments and the changes in its bioavailability under intermittent P input and sedimentresuspension conditions were investigated via laboratory experiments. The sediments were disturbed daily for 10 min and thenallowed to settle for 1430 min after each disturbance to simulate the intermittent sediment resuspension conditions. The removalof soluble reactive P from the overlying water under sediment resuspension was greater than that under static c... Autori: Li Dapeng ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26567
PHYTOACCUMULATION, COMPETITIVE ADSORPTION AND EVALUATION OF CHELATORS-METAL INTERACTION IN LETTUCE PLANT
Environmental Engineering and Management Journal › Vol. 13 › Nr. 10 AbstractPresent study was envisaged to study chelators-metal interaction in phytoaccumulation of metals as a bioremediation technologyto decontaminate metal pollution and adsorption of metals on soil. Lactuca sativa was used as model plant for phytoaccumulationto identify uptake of Cadmium (Cd) and Lead (Pb) and their subsequent accumulation in edible tissue of plant. Cadmium andlead were two selected metals for phytoaccumulation and copper was also studied for adsorption experiment. Green house... Autori: Audil Rashid ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26568
EQUILIBRIUM, KINETIC AND THERMODYNAMIC STUDIES OF CATIONIC RED X-GRL ADSORPTION ON GRAPHENE OXIDE
Environmental Engineering and Management Journal › Vol. 13 › Nr. 10 AbstractGraphene oxide (GO) was prepared from expandable graphite by a modified Hummers method and characterized by TEM,XRD, FTIR, and Raman spectroscopy. The batch adsorption experiments were carried out to study the effect of variousparameters, such as the initial concentration, adsorbent dosage, initial pH, contact time and temperature on adsorption propertiesof cationic red X-GRL onto GO. The Langmuir and Freundlich models were used to fit the experimental data of adsorptionisotherms. The k... Autori: Jiankun Sun ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26570
ENERGY PRODUCTION FROM WASTEWATER USING HORIZONTAL AND VERTICAL SUBSURFACE FLOW CONSTRUCTED WETLANDS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 10 AbstractThe aim of the present work is to study the performance of a constructed wetland for domestic wastewater depuration alsoworking as a microbial fuel cell (MFC) under two different subsurface flow modes in the upper cathodic compartment (horizontalflow, HF, or vertical flow, VF), and to compare the efficiency under both situations. A pilot-scale subsurface constructed wetlandtreating domestic wastewater was used, and the installation also included the electrodes and devices needed to work ... Autori: José Villaseńor Camacho ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26574
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
COD REMOVAL FROM SYNTHETIC WASTEWATER CONTAINING AZITHROMYCIN USING COMBINED COAGULATION AND A FENTON-LIKE PROCESS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 12 Abstract
In this study, the COD removal of Azithromycin from synthetic wastewater (produced to have a composition similar to industrial
wastewater) using a Fenton-like (Fe°/H2O2) system in combination with coagulation has been investigated. Chemical oxygen
demand (COD) was selected as the main parameter to assess treatment efficacy in the current study (COD° = 390mg/Lequivalent
to 200mg/LAzithromycin). First, the coagulation process was carried out on the synthetic wastewater and the... Autori: Ahmad Reza Yazdanbakhsh ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26586
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
ANALYSIS OF THE OPERATING CONDITIONS IN THE TREATMENT OF COSMETIC WASTEWATER BY SEQUENCING BATCH REACTORS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 12 Abstract
The biological removal of organic matter from a cosmetic wastewater by sequencing batch reactors has been optimized by
analyzing the influence of the hydraulic retention time as well as the inclusion of anoxic and/or aerobic stages in the process
sequence. Hydraulic retention time of 5 d led to the highest total organic carbon and chemical oxygen demand removal regardless
the sequence used. Although a completely aerobic sequence can be used for cosmetic wastewaters treatment, the al... Autori: Montserrat Tobajas ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26589
ENVIRONMENTAL QUALITY IN FORESTS FROM BUCHAREST METROPOLITAN AREA, ROMANIA
Environmental Engineering and Management Journal › Vol. 13 › Nr. 12 Abstract
The assessment of heavy metals pollution using Xanthoria parietina (L.) Th. Fr. as an indicator species was performed for
forests from Bucharest metropolitan area. This study aims to provide original data concerning environmental quality in relation to
the intensity of car traffic. Metal concentrations in Xanthoria parietina measured in sites adjacent to roads were compared with
those measured at a distance from traffic. The results show significant correlations between the Cd and C... Autori: Ioana Vicol ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26593
HEAVY METALS CONTENT AND ESSENTIAL OIL YIELD OF Juniperus phoenicea L. IN DIFFERENT ORIGINS IN JORDAN
Environmental Engineering and Management Journal › Vol. 13 › Nr. 12 Abstract
The present study was conducted to determine the heavy metals (Fe, Mn, Zn, Cu, Pb, and Cd) and essential oils content in the
berries of Juniperus phoenicea L. grown in two different geographic origins; Dana conservation and Al-Hisha forest in Jordan.
Atomic absorption and Hydrodistillation methods were used to determine heavy metals concentrations and oil contents in plant
samples of J. phoenicea L., respectively. Results showed that, the oil yielded from J. phoenicea L. berries in ... Autori: Mohammad Sanad Abu-darwish ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26595
POTENTIAL USE OF Crambe abyssinica PRESS CAKE AS AN ADSORBENT: BATCH AND CONTINUOUS STUDIES
Environmental Engineering and Management Journal › Vol. 13 › Nr. 12 Abstract
This study evaluates the potential of Crambe abyssinica press cake, a residue from crambe oil extraction and/or biodiesel
production, as an adsorbent for removal of cationic dyes from wastewaters. Batch adsorption tests were performed at 30, 40 and
50oC. Adsorption kinetics and equilibrium were satisfactorily described by the pseudo second-order and Freundlich models,
respectively. Adsorption was spontaneous and exothermic. Fixed bed adsorption (breakthrough curve) was satisfactoril... Autori: Adriana S. Franca ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26597
ECOPHYSIOLOGICAL AND BIOCHEMICAL PARAMETERS FOR ASSESSING Cr+6 STRESS CONDITIONS IN Pterogyne nitens Tul.: NEW AND USUAL METHODS FOR THE MANAGEMENT AND RESTORATION OF DEGRADED AREAS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 12 Abstract
Heavy metals, such as Cr (chromium), have received attention during recent years due to their disposal in soil and water. Brave
peanut (Pterogyne nitens Tul.), a tropical tree, was cultivated in 500 mol L-1 Cr+6 to observe how this species responds to this
stress, with a view to its possible application in the restoration of degraded areas. In the present study, we report the use of a new
method, photoacoustic spectroscopy, to evaluate the emission of CO2 and ethylene and th... Autori: Luisa Brito Paiva ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26602
PARTICULATE MATTER STATUS IN ROMANIAN URBAN AREAS: PM10 POLLUTION LEVELS IN BUCHAREST
Environmental Engineering and Management Journal › Vol. 13 › Nr. 12 Abstract
In the present study, the results of PM10 pollution levels assessment in the most populated town from Romania, namely
Bucharest, the capital of the country are presented for a 10 years period, 2004 – 2013, respectively, with the aim of emphasizing
the progress recorded after the implementation of Directive 2004/107/EC and Directive 2008/50/EC provisions. Data were
collected from 8 monitoring stations located in different areas of Bucharest. PM10, Cd, Pb and Ni from PM10 averag... Autori: Marian Proorocu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26606
ASSESSMENT OF SPATIAL DISTRIBUTION AND POLLUTION WITH HEAVY METALS IN ROADSIDE SOILS ALONG XIAN-BAOJI HIGHWAY IN NORTHWEST CHINA
Environmental Engineering and Management Journal › Vol. 13 › Nr. 12 Abstract
Xi’an-Baoji Highway is one of the oldest and most important highways in northwest China. In this study, the concentrations (0-20
cm) of Pb, Zn, Cu and Cr at 5-1000 m distances in the roadside soils along Xi’an-Baoji Highway were experimentally determined
to analyze their spatial distribution and evaluate their contamination levels. The spatial distribution (mg·kg-1) of Pb, Zn, Cu and Cr
at 5-1000 m distances from the both roadsides (North/South) is, respectively, ... Autori: Shuanxi Fan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26610
KINETIC MODELING OF DIESEL OIL WASTEWATER DEGRADATION USING PHOTO-FENTON PROCESS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 1 Abstract
The objective of this study is to develop a mathematical model which would confidently predict the rate of substrate degradation
of an oil-water emulsion in a laboratory-scale completely-mixed continuous flow reactor using the photo-Fenton treatment
process. Two models are developed from first principles and the predicted substrate removal rates for both models are compared
with experimental data. The principal conclusions of the study are that both models produce good correlations ... Autori: Maha A. Tony ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26613
BATCH AND COLUMN REMOVAL OF CHROMIUM (VI) FROM AQUEOUS SOLUTION USING POLYPYRROLE
Environmental Engineering and Management Journal › Vol. 14 › Nr. 1 Abstract
The present study deals with the removal of Cr (VI) from aqueous solution by polypyrrole (PPy). Response surface methodology
(RSM) was applied for the design and analysis of experiments in the optimization of pH, temperature, initial concentration,
contact time and adsorbent dose during the removal of the Cr (VI). The optimum adsorbent dose, temperature, initial
concentration of Cr (VI), pH and contact time were found to be 0.8 g, 46.5 oC, 187.5 mg/L, 5.3 and 15.4 min respectively. ... Autori: Ehsan Hasani ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26614
DISTRIBUTION OF HEAVY METALS IN THE LAKE TALKA (LITHUANIA) SAPROPEL AND POSSIBILITIES OF PRACTICAL USE
Environmental Engineering and Management Journal › Vol. 14 › Nr. 1 Abstract
This article presents the results of investigations addressing the accumulation of heavy metals in different layers of the Lake
Talkša, Lithuania. For the sampling from the ice of intact structure of the sediment the turf borer was used. Concentrations of
these heavy metals in sapropel layers were determined in the extracts of sapropel. After the preparation of samples, the
concentration of Pb, Ni, Cr, Zn and Cu were measured in the laboratory by means of atomic absorption sp... Autori: Justyna Kozlovska ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26615
CHARACTERIZATION OF FIRST FLUSH IN URBAN HIGHWAY RUNOFFS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 1 Abstract
Samples were collected for six months (nine storm events) to observe the contaminant loads from three highway segments at
Rawalpindi, Pakistan. The contaminants analyzed include total suspended solids (TSS), total dissolved solids (TDS), total
nitrogen (TN), chemical oxygen demand (COD), total organic carbon (TOC), total phosphorous (TP), sulphate (SO4), chloride
(Cl-), iron (Fe), copper (Cu), zinc (Zn), lead (Pb), and chromium (Cr). Mass vs. volume [M (V)] curves were drawn to inve... Autori: Hamid Iqbal ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26617
CATHOLYTE-CONDITIONING ENHANCED ELECTROKINETIC REMEDIATION OF Co- AND Pb- POLLUTED SOIL
Environmental Engineering and Management Journal › Vol. 14 › Nr. 1 Abstract
The feasibility of catholyte-conditioning to enhance the electrokinetic (EK) remediation of cobalt and lead polluted soil has been
investigated in this study. Electrokinetic experiments were conducted using an EK cell 10 cm in width, 10 cm in height, and 50
cm in length. Plate type electrode of graphite was used as electrode material. Two experiments were conducted under constant
voltage condition (2 V/cm). The pH values of the soil significantly affect the removal of Co and Pb ions... Autori: Mahdi Bahemmat ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26623
SUBSTRATE INHIBITION KINETICS OF MALATHION BIODEGRADATION AND THE EFFECT OF MOLASSES AS COSUBSTRATE
Environmental Engineering and Management Journal › Vol. 14 › Nr. 1 Abstract
Malathion is a toxic, wide-spectrum organophosphorus pesticide. The removal of this pesticide from water is one of the major
environmental concerns. In this study, the biodegradation of malathion using batch activated sludge was studied. The effect of
initial malathion concentration (5 to 140 mg/L) on the degradation process was investigated. The biokinetic parameters (rs max, Ks
and Ki) were estimated. Identification of dominant bacterial flora was also achieved. In addition, two k... Autori: Djaber Tazdaďt ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26625
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
CAUSAL ANALYSIS ON THE SPECIFIED PAROXYSMAL WATER POLLUTION INCIDENTS IN THE HUAI RIVER BASIN, CHINA
Environmental Engineering and Management Journal › Vol. 14 › Nr. 1 In the Huai River Basin, pollutant masses are frequently concentrated into dams and sluices, which are subsequently discharged
anddestroying the downstream ecology and environment. This phenomenon has been termed the specified paroxysmal water
pollution incident (SPWPI), which has attracted worldwide attention as a large-scale water pollution problem. Studies of the
formation mechanism of SPWPIs have become an urgent topic for fundamental research in water pollution prevention and
control. I... Autori: Şukru Dursun ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26628
ANAEROBIC BIOREMEDIATION OF PAHCONTAMINATED SOIL: ASSESSMENT OF THE DEGRADATION OF CONTAMINANTS AND BIOGAS PRODUCTION UNDER THERMOPHILIC AND MESOPHILIC CONDITIONS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 1 Abstract
The degradation of polycyclic aromatic hydrocarbons (PAHs) including fluorene, phenanthrene, anthracene, fluoranthene and
pyrene were investigated under thermophilic and mesophilic anaerobic-methanogenic conditions. By using central composite
design, the impact of PAH concentration and soil to inocula ratio were systematically studied for their influence on PAH removal
and biogas production. During the first 30 days, PAH concentration decreased in all samples indicating that the ino... Autori: Tahseen Sayara ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26629
STUDY OF THE SYNTHESIS AND ENVIRONMENTAL REMOVAL OF 4,4-DIPYRIDINE DERIVATIVES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 2 Abstract
Dipyridine derivatives are used on large scale and pose significant environmental problems. We have synthesized dipyridine
derivatives with: 5-chlorovaleric acid, α-dichlorhidrin, iodoacetamide and 11-bromoundecanoic acid. The synthesized substituted
compounds were investigated by LC-MS. The adsorptive removal of dipyridine derivatives from aqueous solution has been
studied using medicinal activated carbon. The adsorption rate has been investigated under the controlled process... Autori: Ana Chira ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26638
ENVIRONMENTAL IMPACT AND RISK ASSESSMENT OF THE MAIN POLLUTION SOURCES FROM THE ROMANIAN BLACK SEA COAST
Environmental Engineering and Management Journal › Vol. 14 › Nr. 2 Abstract
The environmental impact assessment (EIA) is a compulsory evaluation instrument for environmental management and decision
making processes and applies to different phases of activities (plans, programmes, projects and /or existing production or
services), because it measures the natural and anthropogenic activities effects upon the environment. These impacts may affect
the cultural richness, biodiversity, social-economic conditions and human health as well as the ecosystem equilibri... Autori: Brindusa Robu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26645
CATALYTIC AND NON-CATALYTIC PYROLYSIS OF BIOLOGICALLY TREATED MANURE
Environmental Engineering and Management Journal › Vol. 14 › Nr. 2 Abstract
The utilization of manure for waste-to-bioenergy conversion processes may be a sustainable development choice rather than its
traditional use as a fertilizer. Furthermore, the valorization of manure via thermochemical conversion routes and their integration
with biological processes can provide an additional pathway in the utilization of residual biomass. On the other hand, the use of
metal oxides might enhance the performance of thermochemical processes such as pyrolysis by either ... Autori: Maria Fernandez-Lopez ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26647
LAYERED DOUBLE HYDROXIDES AS ADSORBENTS FOR ANIONIC DYE REMOVAL FROM AQUEOUS SOLUTIONS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 2 Abstract
Reactive Blue 19 (RB 19) dye removal from aqueous solutions by using layered double hydroxides containing nitrate as the
intergallery anion (MgAlLDH) as adsorbents was investigated. The adsorption process was found to be influenced by the contact
time, the initial dye concentration, the presence of inorganic anions and the temperature. The XRD and FTIR analysis evidence
two competitive processes: adsorption and/or intercalation of the molecules may take place, depending on the initi... Autori: Maria Celina Alexandrica ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26651
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
ION EXCHANGE PROCESSES ON WEAK ACID RESINS FOR WASTEWATER CONTAINING COOPER IONS TREATMENT
Environmental Engineering and Management Journal › Vol. 14 › Nr. 2 Abstract
The capacity of ion exchange resins, MN 500 and C100 H, for the removal of copper ions from aqueous solution has been
investigated under different conditions, namely: initial solution pH, initial metal-ion concentration and contact time.
The adsorption of Cu(II) on these resins follows the first-order reversible kinetic. The film diffusion of Cu (II) in these ion
exchange resins was shown to be the main rate limiting step. The studies showed that these cation exchange resins can be ... Autori: Cristina Modrogan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26658
BIOSORPTION OF ANTIMONY BY BROWN ALGAE S. muticum AND A. nodosum
Environmental Engineering and Management Journal › Vol. 14 › Nr. 2 Abstract
Environmental contamination by antimony has been described as a critical issue in many articles. In this study, the Sb(III)
removal by two brown algae, Sargassum muticum and Aschophylum nodosum, has been tested. Algae were collected in Viana do
Castelo beach (Portugal). Preliminary tests were carried out and, based on the results, Sargassum muticum was chosen for
subsequent experiments. Kinetic data were described by pseudo second order model. After about four hours contact time the... Autori: Gabriela Ungureanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26659
TRANSFORMATION OF TECHNOGENIC Cu AND Zn COMPOUNDS IN CHERNOZEM
Environmental Engineering and Management Journal › Vol. 14 › Nr. 2 Abstract
The influence of exogenous form of heavy metals intake on their transformation in the soil is determined during model
experiments. Distinctions in quantity of extracted mobile compounds of heavy metals in the soil depending on a form of addition
various connections of Cu and Zn are established. The smallest mobility of Cu and Zn at addition of heavy metal oxides is
observed. It is established that Cu accumulates mainly in the fraction connected with organic matter; Zn accumulates in... Autori: Tatiana M. Minkina ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26662
HEALTH RISK ASSESSMENT OF HEAVY METALS AND POLYCYCLIC AROMATIC HYDROCARBONS IN SOIL AT COKE OVEN GAS PLANTS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 2 Abstract
Sites contaminated with hazardous materials pose serious risks to human health and ecological environments. Quantitative health
risk assessment is a site-specific complex procedure requiring evaluation of all possible pathways. Several studies have focused
on the evaluation of heavy metals or organic pollutants; however, only few studies focused on the evaluation of diverse pollutants
such as heavy metals and organics. In this study, the health risk of heavy metals and organic pollu... Autori: Hou Wei ISSN: 1 http://www.ecozone.ro/reviste.php?RID=26663
CELLULOSE CELLETS AS NEW TYPE OF ADSORBENT FOR THE REMOVAL OF DYES FROM AQUEOUS MEDIA
Environmental Engineering and Management Journal › Vol. 14 › Nr. 3 Abstract
In the current study, the structural and adsorptive properties of the micro crystalline cellulose beads, Cellets 200 and 350, as well
as the possibility to use them as adsorbents for removal of reactive dye Brilliant Red HE-3B and cationic dye Methylene Blue
from aqueous solutions have been investigated. Batch experiments were conducted to study the effect of adsorbent particles size
(200-500 μm), initial solution pH (1-11), adsorbent dose, dye concentration, temperature (2-450C)... Autori: Daniela Suteu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26668
ADSORPTION OF ENDOCRINE DISRUPTORS ON EXFOLIATED GRAPHENE NANOPLATELETS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 3 Abstract
Drinking water treatment using activated carbon (AC) decontamination offers effective methods for removing some organic
compounds, tastes and odors, but it is not so efficient for metals, nitrates, microbial contaminants and other organic and inorganic
contaminants. In the last years, nanotechnologies introduced several types of nanomaterials for organic, inorganic and biological
removal of contaminants in drinking water, such as: sorption, filtrations and catalytic processes. In th... Autori: Elena Radu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26671
ENHANCING THE FENTON PROCESS BY UV LIGHT APPLIED IN TEXTILE WASTEWATER TREATMENT
Environmental Engineering and Management Journal › Vol. 14 › Nr. 3 Abstract
Nowadays, an efficient wastewater management involves the use of advanced treatment technologies able to decompose hardly
biodegradable compounds with reasonable costs at the lowest possible environmental impact. In our work we used one of the
most efficient advanced wastewater treatment, the Fenton reaction and its photo-assisted version. The hydrogen peroxide was the
oxidizer; despite its relatively high cost, its high activity in oxidizing of a large variety of organic persistent... Autori: Vasilica-Ancuta Simion ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26677
SELECTIVE RECOVERY OF PHENOLIC DERIVATIVES THROUGH THE TECHNIQUE OF LIQUID MEMBRANES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 3 Abstract
In the present paper we studied the competitive transport of p-nitrophenol (pNP) and 2,4-dinitrophenol (2,4-dNP) from aqueous
media using the technique of liquid membranes. This technique is very efficient, economic and selective when compared to other
removal techniques of phenolic derivatives. The paper presents the influence of the sodium carbonate concentration from the
stripping phase, the influence of the concentration ratio [2,4-dNP]/[pNP] upon the selectivity of the transpor... Autori: Ioana Diaconu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26681
REMOVAL OF CARBAMAZEPINE BY ELECTROCOAGULATION: INVESTIGATION OF SOME KEY OPERATIONAL PARAMETERS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 3 Abstract
The performance of electrocoagulation (EC) process, a non-specific electrochemical technology, was investigated for the
removal of carbamazepine (CBZ), an antiepileptic drug, from water. Experiments were carried out in synthetic wastewater in a
batch cell. The respective influences of some key process parameters were studied, such as mixing conditions, initial pH, and
current on aluminium electrodes. Experimental results showed that a CBZ removal efficiency of 62% was observed under... Autori: Tania Yehya ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26683
INNOVATIVE BIOSORBENT FOR THE REMOVAL OF CADMIUM IONS FROM WASTEWATER
Environmental Engineering and Management Journal › Vol. 14 › Nr. 4 Abstract
In the present work, the removal of cadmium ions from aqueous solution using an agricultural waste as biosorbent, namely trunk
palm fibers was investigated. The adsorption equilibrium and kinetics for this system were studied. Four adsorption models were
applied to understand the nature of the adsorption process. Freundlich adsorption isotherm was found to best fit the experimental
data. The maximum adsorption capacity was found to be 23.8 mg/g. The adsorption process was found to b... Autori: Hosam Altaher ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26699
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
NICKEL (II) REMOVAL FROM INDUSTRIAL PLATING EFFLUENT BY FENTON PROCESS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 4 Abstract
In this study, the efficiency of Fenton’s process to remove nickel (II) from industrial plating effluent was investigated. The effect
of pH, contact time, concentrations of Fe2+ and H2O2 were surveyed. Kinetic experiments were performed in order to predict the
nickel (II) removal rate from wastewater. At pH 1 to 4, nickel (II) removal efficiency increased and declined at pH > 4. The
maximum nickel (II) removal efficiency was 98% at 60 min contact time, pH: 4, and Fe2+ and H... Autori: Mohammad Malakootian ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26704
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
APPLICATION OF Mangifera indica SEED SHELL FOR EFFECTIVE ADSORPTION OF Fe(II) AND Mn(II) FROM AQUEOUS SOLUTION
Environmental Engineering and Management Journal › Vol. 14 › Nr. 4 Abstract
Adsorption has proved to be an excellent way to treat industrial wastewater, due to its significant advantages like easy
availability, inexpensive, ease of operation and highly efficient, compared to conventional expensive adsorbents like activated
charcoal, alumina etc. The present investigation focused on utilization of Mangifera indica seed shell substrate for the removal of
toxic heavy metals like Fe(II) and Mn(II) from wastewater. Mangifera indica seed shell substrate as an eff... Autori: Tikaram D. Kose ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26713
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
APPLICATION OF MAGNETITE NANOPARTICLES AS ADSORBENT FOR Cr, Cd, Ni AND Cu FROM AQUEOUS SOLUTIONS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 5 Abstract
Magnetite nano-particles (Fe3O4) were synthesized in order to be used as adsorbent for some toxic metal ions (Cr, Cd, Ni and Cu)
present in aqueous solutions (industrial waste waters). The amount of toxic metals (Cr, Cd, Ni and Cu in quaternary aqueous
solutions) before and after contact with the magnetite nano-particles was analyzed by flame atomic absorption spectrometry
(FAAS). Different operational parameters such as metal concentration and pH of the quaternary solution, as well... Autori: Ecaterina Matei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26721
DECOLORIZATION AND MINERALIZATION OF REACTIVE RED 198 IN SALINE WATER: PERFORMANCE COMPARISON OF PHOTOLYSIS, UV/TiO2, AND UV/ZNO PROCESSES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 5 Abstract
The objective of this study was to identify differences between three of the most conventional UV-based advanced oxidation
processes, namely photolysis, UV/TiO2, and UV/ZnO for the decolorization and mineralization of reactive red 198 (RR198)
model dye in saline media. The study investigated influences of solution pH levels, salt concentration, reaction time and dye
concentration on the degradation of RR198. The most effective dye removal and mineralization was observed at pH levels... Autori: Gholamreza Moussavi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26724
STUDIES ON GLUTARALDEHYDE CROSSLINKED XANTHATED CHITOSAN TOWARDS THE REMOVAL OF MERCURY (II) FROM CONTAMINATED WATER STREAMS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 5 Abstract
Chitosan was cross linked with gluteraldehyde and chemically modified by introducing xanthate group onto its backbone using
carbon disulfide under alkaline conditions. This crosslinked xanthated chitosan flakes (XC) was used as an adsorbent for the
removal of mercury ions from contaminated water streams near the coal mines. XC was found to be far more efficient than the
conventionally used adsorbent activated carbon. FTIR studies indicated the interaction both amine and the xanthate... Autori: Avinash Gupta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26725
ADSORPTIVE REMOVAL OF PHOSPHATE FROM AQUEOUS SOLUTIONS BY WASTE SNAIL AND CLAM SHELLS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 5 Abstract
Large quantities of snail and clam shells are left as waste material when their meat is used as food for people. It has been a big
problem that how to treat these wastes and usually these are land filled as wastes. In the present paper, these shells are studied as
recycling resource for phosphate removal from solutions. Laboratory-scale batch experiments were conducted to evaluate the
efficiency of snail and clam shells in removing phosphate from aqueous solutions. Major factors inv... Autori: Ji Bing Xiong ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26727
CHARACTERISTIC OF ROAD DEPOSITED SEDIMENTS ON THE HIGHWAY OF HUNAN, CHINA
Environmental Engineering and Management Journal › Vol. 14 › Nr. 5 Abstract
This paper aims to analyze the characteristic of Road deposited sediment (RDS) using West Chang Tan highway, Hunan, China
as a study site. RDS samples were collected at five representative highway sites and the particle size distribution was generally
less than 150μm. Particles with the grain size (<150μm) had high metal concentrations among all sampling sites (unit: mg/kg):
Cu 74-178, Zn 309-2737, Pb 601-1160, Cd 9.8-44.5. There is significant spatial variability between t... Autori: Yunbo Zhai ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26728
ADSORPTIVE REMOVAL OF METHYLENE BLUE FROM AQUEOUS SOLUTIONS BY PUMICE POWDER: PROCESS MODELLING AND KINETIC EVALUATION
Environmental Engineering and Management Journal › Vol. 14 › Nr. 5 Abstract
This study was carried out to investigate the adsorption of methylene blue (MB) onto pumice powder, as a low-cost adsorbent for
the removal of dyes. The experiments were designed based on a central composite design (CCD) and the process was analyzed
and modeled using response surface methodology (RSM). In order to study the adsorption process, three important factors viz.
pumice dosage (20- 50 mg/50mL), MB concentration (20-40 mg/l) and contact times (5- 35 min) were chosen as varia... Autori: Kiomars Sharafi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26729
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
NOVEL USES OF RED MUD IN TEXTILE WASTEWATER TREATMENT, DYEING, AND CONCRETE PRODUCTION
Environmental Engineering and Management Journal › Vol. 14 › Nr. 5 Abstract
Optimum conditions for the reusability of red mud were explored testing both dried and HCl-activated red mud as a coagulant in
the treatment of dyehouse wastewater. Treated dyehouse wastewater was further reused in five dyebaths with different mixture
ratios of distilled water (D) and treated wastewater (W) for dyeing fabrics at three color strengths of three reactive dyes. Sludge
obtained from the optimum dosage of HCl-activated red mud was tested for its reuse potential in the pro... Autori: Aylin Yildiz ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26738
ENVIRONMENTAL RISKS OF WASTE THERMAL WATER DISPOSAL: LONG-TERM EFFECTS OF THERMAL WATER SEEPAGE ON DIFFERENT SOIL TYPES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 5 Abstract
In Hungary, 0.5 million m3 of thermal water is exploited every day for diverse purposes. After utilization, this enormous amount
of thermal water becomes sewage water with a high concentration of salts, heavy metals, ammonia, nitrate, an unfavorable ion
composition and high temperature. A common treatment is to dispose of waste water into a surface recipient through uninsulated
channels surrounded by arable land. By infiltration, sewage water can cause potential salinization/sodific... Autori: Andrea Farsang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26742
A NEW KINETIC AND THERMODYNAMIC APPROACH TO PHENOL BIOSORPTION BY CHITOSAN AND KERATIN
Environmental Engineering and Management Journal › Vol. 14 › Nr. 5 Abstract
Chitosan and keratin were tested as low cost biosorbents to remove phenol from water solutions at variable temperature (20-
50°C), initial phenol concentration (10-90 mg L-1) and pH (5.0-10.0), and fixed biosorbent dosage (10 g L-1). The pseudo-second
order kinetic model exhibited the best fit to the experimental data and allowed estimating theoretical values of sorption capacity
of 4.51 mg g-1 with keratin and 2.87 mg g-1 with chitosan. Equilibrium isotherms, described at best ... Autori: Attilio Converti ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26743
PREPARATION, CHARACTERIZATION AND ADSORPTION PROPERTIES OF MFe2O4 (M = Ni, Co, Cu) NANOPOWDERS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 6 Abstract
MFe2O4 nanopowders (M = Ni, Co, Cu) were prepared using the precursor technique, starting from the corresponding metal
nitrates and poly(vinyl alcohol)-PVA. During the heating of metal nitrates- PVA solution, a redox reaction takes place around
150°C, leading to the formation of M(II) and Fe(III) carboxylates. These compounds were used as precursors for the ferrites
nanopowders. The desired ferrites were obtained by thermal decomposition of the carboxylates; the obtained... Autori: Marcela Stoia ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26745
COMPARATIVE CHARACTERISTICS OF SOME POLYMERIC MATERIALS IMPREGNATED WITH IONIC LIQUID FOR THE REMOVAL OF RADIONUCLIDES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 6 Abstract
In order to remove various radionuclides (Tl+, Sr2+and La3+) from wastewaters we used three solid supports of (styrenedivinylbenzene)
grafted with different pendant groups (1-triphenylphosphonium; 2-izo-propylphosphonate; 3-
aminoethylaminomethyl). The solid supports with different pendant groups were impregnated with ionic liquid (Cyphos IL-101-
trihexyltetradecylphosphonium chloride). IR-spectra, EDX-ray and SEM image were used to characterize the adsorbent obtained
after the imp... Autori: Mihaela Ciopec ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26749
REMOVAL OF AN ORGANIC REFRACTORY COMPOUND BY PHOTOCATALYSIS IN BATCH REACTOR KINETIC STUDIES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 6 Abstract
The present work systematically investigates the photocatalytic degradation of carbamazepine (CBZ), an organic compound,
known as refractory to the conventional wastewater treatment by the titanium dioxide PC 500 catalyst. The effects of some
fundamental operating parameters in heterogeneous photocatalysis were investigated in this work in order to determine the main
ones affecting the degradation kinetics. The obtained results clearly showed that the removal rate of the target comp... Autori: Lidia Favier ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26754
DICLOFENAC REMOVAL FROM AQUEOUS SOLUTIONS BY ELECTROOXIDATION AT BORON-DOPED DIAMOND (BDD) ELECTRODE
Environmental Engineering and Management Journal › Vol. 14 › Nr. 6 Abstract
Diclofenac (DCF), which belongs to nonsteroidal anti-inflammatory drugs (NSAIDs), is a biorefractory micropollutant and its
removal from wastewaters has become strongly necessary. This paper dealt with the DCF removal from aqueous solutions by
electrooxidation at boron-doped diamond (BDD) electrode. In addition, the dual character of BDD electrode in electrochemical
degradation processes and their control was investigated. The electrooxidation process was assessed based on ultraviol... Autori: Monica Ihos ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26755
ASSESSMENT OF ELECTROCOAGULATION PROCESS FOR DRINKING WATER TREATMENT
Environmental Engineering and Management Journal › Vol. 14 › Nr. 6 Abstract
In this study, the electrocoagulation process using aluminium anodes was tested as alternative for coagulation process for the
drinking water treatment using two types of real groundwater sources, characterized by low turbidity, moderate and high organic
load, and nitrite and ammonium species for one of them. The optimum operating conditions determined to be pH 6.5, current
density (i) 25A/m2 at 30 min resulted in removal efficiency of over 70 % for total organic carbon (TOC) parame... Autori: Anamaria Baciu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26756
RECOVERY OF SEWAGE SLUDGE ON AGRICULTURAL LAND IN LOMBARDY: CURRENT ISSUES AND REGULATORY SCENARIOS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 7 Abstract
Issues concerning the treatment and the recovery/disposal of sludge derived from the municipal WWTPs (Wastewater Treatment
Plants) are gaining importance both in Italy and abroad. In Lombardy Region this aspect is particularly relevant due to both the
amount of sludge produced and its remarkable reuse in agricultural soils. This paper discusses different strategies for land
application of sludge in order to provide technical and regulatory guidance at regional level. The work is bas... Autori: Maria Cristina Collivignarelli ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26769
CATHODE RAY TUBE (CRT) LEAD GLASS: LEAD LEACHING STUDY AFTER A CHELATING AGENT TREATMENT
Environmental Engineering and Management Journal › Vol. 14 › Nr. 7 Abstract
This study is focused on the removal of leachable lead present in CRT (cathode ray tube) glass employing different chelating
agents, NTA (nitrilotriacetic acid) and ATMP (amino trimetilen phosphonic acid), and then on the evaluation of their extractive
capability. The operating conditions are the following: T=80°C, t=1h, pH=10, solid/liquid weight ratio=1/10, reagent
concentration= 0.1 M. Afterwards a number of leaching tests at controlled pH were performed in the 5-9 range for ... Autori: Elena Bursi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26772
PARTITIONING DYNAMICS AND FATE OF METALS IN AN URBAN WASTEWATER TREATMENT PLANT
Environmental Engineering and Management Journal › Vol. 14 › Nr. 7 Abstract
This study focused on the fate of the most representative metals in urban wastewater treatment by the conventional activated
sludge process. The research analyzed: distribution between soluble and particulate fraction in the different treatment stages,
removal efficiencies as related to partitioning, and metal behavior during rainfall events. A mass balance approach allowed
evaluating the behavior of the metals, migration between phases and final fate, in order to investigate metal ... Autori: Giancarlo Cecchini ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26773
OPTIMIZATION OF THERMOPHILIC ANAEROBIC DIGESTION OF WINERY BIO-WASTE BY MICRO-NUTRIENTS AUGMENTATION
Environmental Engineering and Management Journal › Vol. 14 › Nr. 7 Abstract
Thermophilic anaerobic digestion is a suitable technology to treat agricultural waste because of its higher biogas production,
hygienisation effect and solids removal efficiency. Although these benefits, poor effluent quality and instability are encountered
in some cases. The anaerobic co-digestion of winery waste and waste activated sludge at 55°C, operating at 23 days HRT and
with an organic loading rate of 3.2 kg COD/m3d, was characterized by accumulation of volatile fatty ac... Autori: Cinzia Da Ros ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26775
INNOVATIVE TECHNOLOGIES FOR METALS RECOVERY AND PLASTIC VALORIZATION FROM ELECTRIC AND ELECTRONIC WASTE: AN INTEGRATED APPROACH
Environmental Engineering and Management Journal › Vol. 14 › Nr. 7 Abstract
The increasing diffusion of Hi-tech complex products has raised the attention of scientific community towards their End of Life
(EoL) treatment, both in terms of assuring an appropriate disposal, to avoid the dispersion of harmful substances, and at the aim
of their exploitation as valuable sources of raw materials. Within this study an integrated approach for waste electrical and
electronic equipment (WEEE) end of life treatment is proposed based on the integration of hydrometallur... Autori: Claudia Brunori ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26777
INDOOR AND OUTDOOR VOLATILE ORGANIC COMPOUNDS MONITORING IN A MULTI-STOREY CAR PARK
Environmental Engineering and Management Journal › Vol. 14 › Nr. 7 Abstract
A VOC monitoring was carried out inside and outside a multi-storey car park in order to characterize the emission profile of
vehicular traffic source in an indoor environment. BTEX, and in particular toluene, were the most abundant compounds in all
monitored sites, with different compositions between indoor parking areas and outdoor sites. The motor vehicle exhaust and
gasoline vapor emission in these enclosed parking garages were characterized by diffusion or degradation phenomena ... Autori: Gianluigi de Gennaro ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26778
A HYDROMETALLURGICAL PROCESS FOR RECOVERING RARE EARTHS AND METALS FROM SPENT FLUORESCENT LAMPS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 7 Abstract
The recovery of raw materials from waste represents a sustainable growth opportunity for those countries with limited mineral
resources availability. A case study for an integrated approach to recover raw materials from spent fluorescent lamps is
presented, with the aim of improving the current treatments which are only able to recover the glass fraction. In particular a
hydrometallurgical process was developed to obtain valuable metals such antimony, copper, and rare earths (yttriu... Autori: Roberta De Carolis ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26782
PYROLYSIS OF WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE) FOR RECOVERING METALS AND ENERGY: PREVIOUS ACHIEVEMENTS AND CURRENT APPROACHES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 7 Abstract
The amount of collected Waste Electrical and Electronic Equipment (WEEE) in Europe is growing about 7 wt.-% per year (2007-
2012). It contains a number of economically relevant base, precious and high-tech metals. However, only a limited number of
these metals can be recovered by currently applied recycling processes. Especially high-tech metals like gallium, germanium and
tantalum get lost during the treatment of WEEE. The pyrolysis technology allows an accumulation of these metals... Autori: Peter Hense ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26785
EFFECT OF NICKEL CONTAMINATION ON THE GROWTH OF OLEAGINOUS YEASTS IN HYDROLISATES OF Arundo donax
Environmental Engineering and Management Journal › Vol. 14 › Nr. 7 Abstract
Hydrolysates of Arundo donax, a crop offering high productivity in contaminated or salinized soils with no inputs of irrigation
and agrochemicals, were used in a discontinuous fermenter to grow the oleaginous yeast Lipomyces starkey, to obtain microbial
oils potentially useful for the production of 2nd-generation biodiesel.
A mixture of fermentable sugars was obtained by steam-explosion and subsequent enzymatic hydrolysis of the lignocellulosic
materials. The concentration of Ni2+ ... Autori: Domenico Pirozzi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26789
TREATMENT OF MATURE LANDFILL LEACHATE BY USING COMBINED ARB PROCESS AND SULFATE RADICAL OXIDATION
Environmental Engineering and Management Journal › Vol. 14 › Nr. 8 Abstract
Treatment experiments for mature landfill leachate were conducted by using combined aged refuse bioreactor (ARB) process and
sulfate radical oxidation. In the ARB process, the effects of wet/dry ratios, hydraulic loading, and influent introduction time on
contaminant removal were investigated. In the oxidation process, Na2S2O8 was activated by heat to generate powerful oxidants,
such as sulfate radicals, to oxide residual contaminants in the effluent. The removal of chemical oxygen ... Autori: Zhanmeng Liu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26818
EFFECTS OF PLANT DIVERSITY ON PLANT BIOMASS AND EFFLUENT NITROGEN REMOVAL IN A CONSTRUCTED WETLAND
Environmental Engineering and Management Journal › Vol. 14 › Nr. 8 Abstract
The short-term effects of plant diversity (number of plant species and species compositions) on aboveground biomass, substrate
inorganic nitrogen (N) concentrations, and substrate solution “effluent” N concentrations were studied in a subsurface verticalflow
constructed wetland (CW). Results showed that (1) the number of plant species increased aboveground biomass (P< 0.05) but
had no effect on the overyielding index DMax; (2) the species compositions and presence of ... Autori: Hai Wang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26822
RESEARCHES ABOUT THE CHARACTERIZATION OF METALLURGICAL SLAGS FOR LANDFILLED WASTES MINIMIZATION
Environmental Engineering and Management Journal › Vol. 14 › Nr. 9 Abstract
The aim of this paper is to assess the chemical and mineralogical composition and the leaching behavior of the electric arc
furnace slags (EAFS) in order to improve their management by identifying suitable reuse options in different fields. The chemical
and mineralogical composition of slag varies from one type of steel to another, from one technological stage to another and from
one steel plant to another. In order to minimize the slag quantities disposed in the slag dumps one has ... Autori: Dana-Adriana Iluţiu-Varvara ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26835
CERAMIC MEMBRANE BASED MICROFILTRATION FOR TREATMENT OF HIGHLY CONTAMINATED TANNERY WASTEWATER
Environmental Engineering and Management Journal › Vol. 14 › Nr. 9 Abstract
The feasibility of treating tannery wastewater having high organic loads was studied using ceramic membrane based
microfiltration process. The common effluent treatment plant (CETP) of a centralized leather complex was selected for the study
which accommodates about 450 tanneries in the city, processing hides from raw to finished products. Effluent sample was
collected from different locations of the CETP, i.e. untreated composite effluent, effluent from primary clarifier and from
... Autori: Priyankari Bhattacharya ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26837
TREATMENT OF COMPOST LEACHATE BY MEMBRANE PROCESSES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 9 Abstract
Composting has been attracting increased interest in the field of organic waste management. During composting, high-strength
leachate is produced with a considerable amount of organic and inorganic pollutants. Lab-scale experiments were performed for
the removal of chemical oxygen demand (COD) and chloride from compost leachate using a combined membrane system. The
combined system consisted of microfiltration, ultrafiltration, and reverse osmosis (RO) membranes. The COD removal
eff... Autori: Vahide Şeyda Özyaka ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26847
STUDY OF BOTTOM ASH RECOVERY BY MEANS OF AGING AND MECHANICAL SORTING PROCESSES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 10 Abstract
The amount of bottom ash produced in Italy from municipal solid waste incinerators is estimated at over a million tons per year.
Up to now, it has almost all been disposed of in landfills. Therefore, large profit margins, from both the economic and
environmental standpoint, can be expected from the recovery of this material, or at least from a fraction of it. In this study, a
rapid procedure for the recovery of different bottom ash fractions based on mechanical sorting and aging was... Autori: Ivano Vassura ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26853
OPTIMIZATION OF PROCESS VARIABLES TO MAXIMIZE THE PERCENT OF IRON REMOVAL FROM 34% CaCl2 SOLUTION
Environmental Engineering and Management Journal › Vol. 14 › Nr. 10 Abstract
This work presents the optimization of process variables to maximize the percent of Fe (II) removal, R (%), by chelating resin
Purolite S930 from 34% CaCl2 solutions. To study the combined effect of the initial solution pH, initial Fe (II) concentration and
resin dosage was used a 23 orthogonal central composite design and Response Surface Methodology (RSM) for analysis of
experimental data. To optimize the regression equation was used The Gradient method. The study discovered that ... Autori: Camelia Popa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26856
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
COLOR REMOVAL OF REACTIVE TEXTILE DYES FROM AQUEOUS SOLUTION BY RAW AND MODIFIED FUNGAL BIOSORBENT
Environmental Engineering and Management Journal › Vol. 14 › Nr. 10 Abstract
This study concentrates on the reactive biosorption of dyes such as Reactive Red 3:1 (RR3:1), Reactive Orange 13 (RO13),
Reactive Blue 13 (RB13), Reactive Blue 72 (RB72). The modified fungal biosorbent, Paecilomyces sp., had a higher dye
biosorption yield in our study. 100% of biosorption yield observed on RR3:1 and RB13 and 94.09% of color removal of RO13
with the chemically modified biosorbent were great. Also, such modified biosorbent exhibited remarkable performance in
simulate... Autori: Ahmet Çabuk ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26860
TRUE COLOR REMOVAL FROM REAL TEXTILE WASTEWATER USING WASTE TEA LEAF POWDER
Environmental Engineering and Management Journal › Vol. 14 › Nr. 10 Abstract
This study investigated the use of tea waste to decolorize refractory dyestuff from textile wastewater. The influence of the
solution pH and the contacting time were examined for various adsorbents, namely green tea-leaf powder (GTP), black tea-leaf
powder (BTP), and powdered activated carbon (PAC). Results from batch experiments revealed that the reduction in true color
(ADMI) increases with decreasing pH. The ADMI reduced from 1106 to 150 with 0.8 g/L of GTP at pH 2. The results a... Autori: Chih-Huang Weng ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26863
REACTIVE DYES (R. BLUE 19 AND R. RED 120) REMOVAL BY A NATURAL COAGULANT: MORINGA OLEIFERA
Environmental Engineering and Management Journal › Vol. 14 › Nr. 10 Abstract
In this study, Moringa oleifera seed extract was applied as coagulant under different pH values (2.5 - 9.5), coagulant dosages
(200-600 mg/L), initial dye concentrations (50-300 mg/L) and different settling times (0- 60 minutes) for R. Blue 19 and R. Red
120 dyes removal. Results revealed that with increase in pH (from 2.5 to 9.5), removal efficiency decreased from 95% to 87.3%
for R. Blue 19 and from 97.2% to 62% for R. Red 120. By increasing coagulant dosage to 400 mg/L, removal e... Autori: Ali Jafari ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26864
ROLE OF ENVIRONMENTAL RISK FACTORS IN PARKINSONS DISEASE: BUCOVINA REGION CASE STUDY
Environmental Engineering and Management Journal › Vol. 14 › Nr. 10 Abstract
Parkinson's disease (PD) is a neurodegenerative disorder that occurs due to a progressive degeneration of dopaminergic (DA)
neurons. Brain area affected by progressive destruction of neurons controls movements, and patients with PD reveal rigid and
uncontrollable gestures, postural instability, small handwriting and tremor. There are some risk factors that have been proven to
trigger PD with a certain probability (for example insecticides exposure, and genetic and environmental ... Autori: Oana Geman ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26868
COMPARISON OF FAAS AND XRF PERFORMANCE FOR METAL MONITORING IN BROWNFIELDS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 11 Abstract
Flame atomic absorption spectrometry (FAAS) and X-ray fluorescence spectrometry (XRF) were used as investigation
techniques in the assessment of soils contaminated with metals such as Pb, Cu and Zn. The investigation focused on the
comparability of the concentrations determined by the two methods, in order to identify the most suitable approach for Pb, Cu
and Zn quantification, with respect to metal monitoring in brownfields. Generally, the concentrations obtained through FAAS
were... Autori: Maria Lucia Bizo ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26875
ASSESSMENT OF HEAVY METALS IN COWS MILK IN RODNEI MOUNTAINS AREA, ROMANIA
Environmental Engineering and Management Journal › Vol. 14 › Nr. 11 Abstract
The aim of this study was to determine the content of the main essential trace (Co, Cr, Cu, Mn, Se and Zn) and toxic (As, Cd, Hg
and Pb) elements in milk by inductively coupled plasma-mass spectrometry (ICP-MS) and cold vapor atomic fluorescence
spectrometer (CV-AFS) following priory microwave-assisted digestion with HNO3-H2O2. The milk samples were collected from
local small-scale producers of different parts of Rodnei Mountains, Eastern Carpathians, Romania. Mean concentrations in... Autori: Oana Cadar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26876
DISSOLUTION OF BASE METALS FROM WASTE PRINTED CIRCUIT BOARDS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 11 Abstract
The aim of the present study was to determine the most feasible experimental conditions for the dissolution of base metals (Cu,
Ni, Zn, Pb, etc.) from waste printed circuit boards (WPCBs) obtained from WMP. The leaching of WPCB samples was
performed with FeCl3 in HCl solution which allowed the separation of a precious metal rich solid residue and a high base metal
concentration solution adequate for base metal recovery. The most favorable conditions for the leaching process were ide... Autori: Szabolcs Fogarasi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26877
MUNICIPAL SOLID WASTE SORTING AND TREATMENT SCHEMES FOR THE MAXIMIZATION OF MATERIAL AND ENERGY RECOVERY IN A LATEST EU MEMBER
Environmental Engineering and Management Journal › Vol. 14 › Nr. 11 Abstract
This paper analyses mass and energy balances of some Integrated Municipal Solid Waste Systems (IMSWS) focusing on MSW
sorting, treatment and energy recovery conversion chains suitable for the last entries into the European Union (EU). In particular
the Romanian case-study has been developed as reference scenario. In this context the actions timelines for the case-study are
immediate (S1A), midterm (S1B) and long term (S2). In the scenarios S1A, S1B a poor selective collection (SC) i... Autori: Gabriela Ionescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26878
ASSESSMENT OF POLLUTANTS INPUT OF ACID MINE DRAINAGE AND DOMESTIC ACTIVITIES IN ARIES RIVER WATER, ROMANIA A CHEMOMETRIC APPROACH
Environmental Engineering and Management Journal › Vol. 14 › Nr. 11 Abstract
To assess the pollutants input of acid mine drainage (AMD) and domestic activities in Aries River, the water was monitored
monthly, during one year, in 15 sampling points along the River. The dissolved metals (Ca, Mg, Na, K, Fe, Cu, Zn, Mn), anions
(SO42-, NO3- and Cl-), pH and electrical conductivity were analyzed. The obtained data were assessed against the water quality
standards, Principal Component Analysis (PCA) and Hierarchical Cluster Analysis. The results revealed the water... Autori: Erika Andrea Levei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26881
RESEARCH ON WASTEWATER PHYTOREMEDIATION USING AQUATIC SPECIES FOR HEAVY METALS PHYTOEXTRACTION AND BIOACCUMULATION
Environmental Engineering and Management Journal › Vol. 14 › Nr. 11 Abstract
Phytoremediation tests on heavy metals bioaccumulation were performed during 2012-2014 with aquatic species Lemna minor,
Pistia stratiotes, Eichhornia crassipes, Vallisneria spiralis, Hydrilla verticillata, Cladophora glomerata on samples of
contaminated waters collected from the toxic pond of waste landfill Şomârd-Mediaş, Sibiu County. With the purpose to check the
species capacity for heavy metal removal and bioaccumulation, comparative analysis of water samples wa... Autori: Dana Malschi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26882
ANALYZING THE PROPERTIES AS FERTILIZER OF ASH FROM OAK WOOD COMBUSTION
Environmental Engineering and Management Journal › Vol. 14 › Nr. 11 Abstract
Ash resulting from wood combustion constitutes a waste disposal problem to facility owners. The use of ash fertilizer or soil
amendment could provide nutrients for agriculture if its nutrient content is adequate and it does not contain harmful amounts of
heavy metals. The recycling of nutrients bound in ash would provide an inexpensive solution to waste problem. In our study, we
aimed to characterize ash and clinker resulted from incineration of oak waste resulted from wood industry... Autori: Ioan Oroian ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26885
UNCONVENTIONAL MORTARS WITH RECYCLED CATHODE RAY TUBES WASTE GLASS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 11 Abstract
In the European Union, the hazardous waste recycling has become a priority, as response at legal prohibition for landfilling of
untreated WEEE. The economic and eco-efficient recycling methods acquire more and more interest from the industry. The
Cathode Ray Tubes (CRT) glass derived from Waste of Electric and Electronic Equipment (WEEE) dismantle is known as
hazardous waste, because of their heavy metals content, especially lead. For this type of waste, the authors have proposed in... Autori: Antoanela Popovici ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26890
AN EXAMPLE OF THE USE OF BIO-INDICATORS FOR AIR QUALITY ASSESSMENT IN AREAS WITH HIGH INDUSTRIAL PRESENCE
Environmental Engineering and Management Journal › Vol. 14 › Nr. 11 Abstract
Air pollution is an increasing critical issue and the focus of innumerable studies and monitoring activities. In addition to
automatic monitoring systems typically used to measure fine dust, ozone, nitrogen oxide and sulfur oxide, the use of
bioaccumulation monitors can also be exploited, especially when monitoring large areas. The advantage of biomarkers is the very
low costs involved compared to traditional monitoring systems. Bio-indicator techniques do not measure directly air q... Autori: Vincenzo Torretta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26892
TIME SERIES ANALYSIS OF AIR POLLUTANTS RECORDED FROM ROMANIAN EMEP STATIONS AT MOUNTAIN SITES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 11 Abstract
The present study analyzes the background pollution in Romania using official data reported for recorded air pollutants from the
automated regional stations located at three mountain sites. A series of key figures regarding the trend of background pollution at
Romanian mountain sites was extracted based on annual average concentrations recorded between 2010 and 2013 i.e. 8.8 ± 5.2
μg NO2/m3, 5.3 ± 1.6 μg SO2/m3, 0.075 ± 0.035 μg CO/m3, 3.2 ± 0.9 ... Autori: Daniel Dunea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26897
REMOVAL OF LEAD (II) IONS BY ACTIVATED CARBON PREPARED FROM DURIAN PEEL: ADSORPTION KINETICS AND ISOTHERMS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 12 Abstract
In this study, activated carbon was synthesized from durian peel and used for the removal of lead (II) ions from water. The
activated carbon was produced with physical activation method using CO2 as the activating agent at 900 oC. Prior to the
activation process, durian peel was carbonized under either nitrogen atmospheric or vacuum pyrolysis in order to compare the
properties of the synthesized activated carbons. Suitable adsorption kinetics and isotherm models for the lead (II) re... Autori: Samorn Hirunpraditkoon ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26901
INDUSTRIAL SOLID WASTE MANAGEMENT IN THE GOVERNORATES OF NABLUS AND RAMALLAH & AL-BIREH, PALESTINE
Environmental Engineering and Management Journal › Vol. 14 › Nr. 12 Abstract
In Palestine, environmental problems associated with industrial solid waste (ISW) have increased significantly in recent years.
This paper presents survey results on current industrial solid waste management (ISWM) practices in the governorates of Nablus
and Ramallah & Al-Bireh, Palestine. Solid waste generated from industries was quantified, characterized and discussed in terms
of generation rate, storage, reuse/recycling, transportation, and final disposal. An attempt was made... Autori: Issam A. Al-Khatib ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26903
EFFECT OF BENZENE ON FORMALDEHYDE REMOVAL BY SHOOTS OF THREE INDOOR PLANT SPECIES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 12 Abstract
Much attention is paid to removing formaldehyde from indoor air to decrease the health risk for urban inhabitants since
formaldehyde is a main indoor pollutant causing various symptoms. In this study, formaldehyde removal by the shoots of potted
Chlorphytum comosum (spider plant), Epipremnum aureum (golden pothos) and Aloe vera (aloe) was investigated with a
dynamic chamber technique. The results indicated that the order of formaldehyde removal capacities for the plant shoots was C.... Autori: Haiping Hou ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26908
REMOVAL OF METHYLENE BLUE BY AN AQUEOUS SUSPENSION OF NANO-SIZED TIO2 CONTAINING DIFFERENT SALTS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 12 Abstract
The photocatalytic degradation (PCD) of methylene blue (MB) in aqueous suspensions of nano-sized TiO2 particles containing
high concentrations of NaCl, MgCl2, and CaCl2 was studied. The rates of PCD and adsorption of ions were monitored by
measuring the total organic carbon (TOC) and using inductively coupled plasma-atomic emission spectrometry, respectively. The
results showed that the removal rate decreased with increasing concentrations of NaCl, MgCl2, and CaCl2. The trend for th... Autori: Yuping Jiang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26910
CAPABILITY OF AQUATIC PLANTS FOR HEAVY METALS UPTAKE IN SIMULATED SEDIMENTS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 12 Abstract
Heavy metals are considered important pollutants found in sewage sludge. That is why sewage sludge can have a limited use as
fertilizer in agriculture. Some aquatic plants can remove nutrients and heavy metals from media as sewage sludge or
contaminated sediments. In this paper, we investigated the effects of different concentration levels of two heavy metals (Ni and
Cd), respectively, 10, 35, 85 and 20, 50, 150 mg/kg in sedimentary media on plant uptake of Ni and Cd, considering th... Autori: Shahram Goudarzi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26912
REDUCTION OF TOTAL SUSPENDED SOLIDS AND CHEMICAL OXYGEN DEMAND FROM PALM OIL MILL EFFLUENTS USING THE ELECTROCOAGULATION PROCESS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 12 Abstract
This study investigated the feasibility of electrocoagulation (EC) process on the treatment of palm oil mill effluent (POME). The
effect of several parameters namely initial pH, current density, stirring speed and operating time on removal efficiency of total
suspended solids (TSS) and chemical oxygen demand (COD) were investigated. The experiments were conducted batch wise
using 400 mL of the POME per batch and pair of aluminum electrodes immersed in the reactor. At optimal initial... Autori: Firdaus Ghazali ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26914
IRON ELECTROCOAGULATION WITH ENHANCED CATHODIC REDUCTION FOR THE REMOVAL OF AQUEOUS CONTAMINANT MIXTURES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 12 Abstract
This study presents enhanced reduction of soluble contaminants in a modified electrocoagulation process that is capable of
treating a mixture of aqueous contaminants. By incorporating an iron foam cathode, the process can remove aqueous
trichloroethylene (TCE) by 99.1% and nitrate ions by 98.2%, which represents 58.1 and 20 percent higher than the removal rates
achieved by iron plate cathode, respectively. pH and ORP measurements indicate the development of a reducing electrolyte
c... Autori: Xuhui Mao ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26915
CONDUCTIVE-DIAMOND ELECTROCHEMICAL OXIDATION OF A PHARMACEUTICAL EFFLUENT WITH HIGH CHEMICAL OXYGEN DEMAND (COD). KINETICS AND OPTIMIZATION OF THE PROCESS BY RESPONSE SURFACE METHODOLOGY (RSM)
Environmental Engineering and Management Journal › Vol. 15 › Nr. 1 Conductive-diamond electrochemical oxidation processes are promising technologies for treating biorefractory industrial wastes
with organic loads below 20000 mg L-1. In this work, electrochemical oxidation of a real industrial pharmaceutical wastewater
with conductive-diamond anodes has been studied. The electrolyses were carried out in discontinuous operation mode under
galvanostatic conditions, using a bench-scale plant equipped with a single compartment electrochemical flow cell. For optim... Autori: Joaquín Ramón Domínguez ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26927
FATE OF METRONIDAZOLE UNDER SOLAR IRRADIATION
Environmental Engineering and Management Journal › Vol. 15 › Nr. 1 Photodegradation caused by sun irradiation may be of major significance in the natural elimination process of pharmaceuticals
and personal care products (PPCPs). The fate of metronidazole (MET) in surface water under solar irradiation was investigated.
Several parameters affecting the photochemical degradation rate of MET were investigated, including the initial pharmaceutical
concentration, continuous input and the presence of other pharmaceuticals like tinidazole (TNZ) with similar structur... Autori: Bo Wu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26928
COAGULATION CHARACTERISTICS OF ORGANIC POLLUTANTS REMOVAL IN CSO WASTEWATER TREATMENT
Environmental Engineering and Management Journal › Vol. 15 › Nr. 1 In this work, coagulation features and characteristics of dissolved organic matter (DOM) in combined sewer overflow (CSO)
wastewater were investigated. Ferric chloride (FeCl3) and polyaluminum chloride (PAC) were employed in the coagulation
process. Results showed that both FeCl3 and PAC are effective in removing turbidity and total phosphorus (TP). Removal
efficiencies were all above 90% when dosages were reasonable. Chemical oxygen demand (COD) removal efficiency was
between 60% and 70%. T... Autori: Wei-gang Wang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26931
OPTIMIZATION CONDITIONS AND APPLICATION OF MOVING BED BIOFILM REACTOR FOR MATURE LANDFILL LEACHATE TREATMENT
Environmental Engineering and Management Journal › Vol. 15 › Nr. 1 Moving bed biofilm reactor (MBBR) technique is a useful technology for the treatment of mature landfill leachate. The reactor
start-up and acclimation processes illustrated that many factors, such as biomass, C/N ratio, and influent volumetric loading rates,
could affect the ammonium-nitrogen (NH4+–N) and COD removal. The factorial experiments were carried out to determine the
optimal reactor operational conditions, and the results demonstrated that when DO 2-4 mg/L, pH 7.5, and hydraul... Autori: Wei Li ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26932
POPULATION ANALYSIS IN HIGH-NITRATE WASTEWATER TREATMENT IN SEQUENCING BATCH REACTORS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 1 The pickling liquor used in the stainless steel manufacturing process is a mixture of nitric and hydrofluoric acid which generates
wastewater with nitrate concentrations ranging between 500 and 6000 mgNO3--N/L. In the present study, laboratory-scale anoxic
Sequencing Batch Reactors (SBRs) were used to treat high nitrate wastewaters. Two different sludge inocula were tested: one
from a Municipal Solid Waste Leachate Treatment Plant (LTP), and the other from a Sewage Treatment Plant (STP). Meth... Autori: Ana Isabel Pelaez ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26933
SORPTIVE REMOVAL OF DIBUTYL PHTHALATE FROM AQUEOUS SOLUTIONS BY BAMBOO-DERIVED BIOCHAR
Environmental Engineering and Management Journal › Vol. 15 › Nr. 1 Adsorptive removal of dibutyl phthalate (DBP) by bamboo biochar (BC) was investigated under various experimental conditions.
BC demonstrated excellent sorptive ability to remove DBP from the aqueous solutions. The removal of DBP by BC increased as
the contacting time increased and reached an equilibrium value after 240 min. The presence of natural organic matter decreased
the removal efficiency while increased the time to reach sorption equilibrium. The adsorption of DBP on BC could be well
... Autori: Junliang Wang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26934
EFFECT OF CLAY SOIL CONTENT ON FECAL BACTERIA REMOVAL IN AN INTERMITTENT MEDIA INFILTRATION SYSTEM
Environmental Engineering and Management Journal › Vol. 15 › Nr. 1 Water scarcity, the degradation of freshwater resources, and wastewater pollution are reaching crisis levels, especially in arid
regions of the world. The reuse of wastewater was investigated by using intermittent media infiltration (IMI) to evaluate fecal
coliform (FC) removal efficiency. Twelve IMI columns were packed with soil and natural filtering materials (sand, zeolite,
vermicompost and charcoal) at percentages of 25, 50 and 75. The municipal wastewater was treated for the FC analysis ... Autori: Sasirot Khamkure ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26935
EFFECT OF THE INTERACTION OF EARTHWORMS AND SUBSTRATES ON PHOTOSYNTHETIC CHARACTERISTICS, NITROGEN AND PHOSPHORUS UPTAKE BY Iris pseudacorus IN CONSTRUCTED WETLAND SYSTEM
Environmental Engineering and Management Journal › Vol. 15 › Nr. 1 This study investigates the effects of earthworms and a variety of substrates on photosynthetic characteristics and rate of uptake
of nitrogen (N) and phosphorus (P) by Iris pseudacorus L. (Iridaceae) in a constructed wetland system under greenhouse
conditions. The study seeks to identify those factors that maximize the efficient removal of N and P. Four substrates were tested:
pure sand, sand and soil, sand and organic matter, and a mixture of sand, soil and organic matter. The photosyntheti... Autori: Defu Xu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26936
OPTIMIZATION OF THE COMBINED UV/ELECTROCOAGULATION PROCESS FOR DYE REMOVAL FROM TEXTILE WASTEWATER USING RESPONSE SURFACE METHODOLOGY
Environmental Engineering and Management Journal › Vol. 15 › Nr. 1 In this study, response surface methodology (RSM) method was applied based on a five-level and four-variable central composite
design. The optimization of the C.I. Direct Red 81 (DR81) removal by the combination of electrocoagulation (EC) and UV
processes was also performed. The effect of initial pH, reaction time, current density and initial dye concentration on the dye
removal was investigated to obtain the optimal experimental conditions. The optimal conditions with the dye removal of 95%
... Autori: Elmira Pajootan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26942
WASTEWATER TREATMENT IN A CONSTRUCTED WETLAND FOLLOWED BY AN OXIDATION POND IN A RURAL AREA OF CHINA
Environmental Engineering and Management Journal › Vol. 15 › Nr. 1 The aim of this study was to examine the pollutant removal performance of a combined process using horizontal subsurface flow
constructed wetland (HFCW) and an oxidation pond (OP) in the treatment of a decentralized domestic wastewater. Waters along
the water flow and at different depths of the wetland substrate were sampled and analyzed during continuous operation. It was
found that the HFCW-OP combined system presented good organic matter and phosphorus removal capacity. In the first year,
... Autori: Wendong Wang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26943
A REVIEW OF FERROELECTRIC PACKED BED NON THERMAL PLASMA REACTOR FOR VOLATILE ORGANIC COMPOUNDS DECOMPOSITION
Environmental Engineering and Management Journal › Vol. 15 › Nr. 2 One way to improve the performance of non-thermal plasma (NTP) reactor for volatile organic compound decomposition is by the
introduction of ferroelectric materials into the discharge zone of NTP. This paper is a review of the breakthroughs and the current
status of the applications of this technology for the abatement of volatile organic compounds (VOCs). It covers the process of
energy generation in NTP, VOCs decomposition processes and the effects of critical factors such as type of packed... Autori: Abdullahi Mohammed Evuti ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26948
BIODEGRADATION OF BASIC FUCHSIN AND METHYL RED BY THE BLUE GREEN ALGAE Hydrocoleum oligotrichum AND Oscillatoria limnetica
Environmental Engineering and Management Journal › Vol. 15 › Nr. 2 In this work biodegradation of basic fuchsin and methyl red by the blue green algae Hydrocoleum oligotrichum and Oscillatoria
limnetica was investigated. The degradation of basic fuschin after 7 days by H. oligotrichum and O. limnetica was 92.44% and
90.23%, respectively. On the other hand, the degradation of methyl red by H. oligotrichum and O. limnetica after 7 days was
53.23% and 50.18%, respectively. The degradation of these dyes by algae seems to be related to the molecular structures of... Autori: Ghada W. Abou-El-Souod ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26949
STUDIES OF PLANT MATERIALS FROM MINING, INDUSTRIAL AND GREEN SITES BY SPECTROSCOPIC METHODS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 2 Various plants were investigated here as bioindicators for control of the environment. Grass, moss and leaves of maple, birch and
oak from different locations, i.e., mining, chemical industrial sites and open green area in a small industrial town in the southwestern
Poland (Zloty Stok) were examined. Concentrations of As, Ba, Ca, Cd, Co, Cr, Cu, Fe, Hg, Mg, Mn, Ni, Pb, Se, Sr, Ti, V
and Zn were measured by the ICP-OES and CVG-ICP-OES techniques. Infrared spectroscopy (FT-IR) was used to inves... Autori: Lukasz Zarebski ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26951
SOURCES AND PATHWAYS OF HEAVY METALS IN FRUITS AND THE COUNTERMEASURES
Environmental Engineering and Management Journal › Vol. 15 › Nr. 2 To explore the main sources and pathways of heavy metals entering fruits and the corresponding countermeasures, a field survey
was conducted in Pujiang County, Zhejiang Province, China. The results showed that heavy metals in fruits came mainly from
the use of foliar fertilizers, ripening agents, fungicides, pesticides, and other sprayed materials during the flowering and ripening
stages. Therefore, a government program should be established to improve monitoring of agricultural products ente... Autori: Bin Fang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26955
DECONTAMINATION OF DIESEL-POLLUTED SOIL THROUGH FLOTATION
Environmental Engineering and Management Journal › Vol. 15 › Nr. 2 This paper studies, in lab scale, the possibility of removing a rich-in-pollutant soil fraction using flotation, with the clean fraction
been restored to its natural condition. The tests were carried out in a conventional flotation cell with mechanical agitation.
Artificially polluted soil was used throughout this study by mixing soil with diesel fuel. The effect of the following flotation
factors was studied: pulp pH, collector type and quantity, conditioning and flotation time, initial soil... Autori: Nickolaos Georgiou ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26960
EVALUATION OF HEAVY METAL POLLUTION INTO A COMPLEX INDUSTRIAL AREA FROM ROMANIA
Environmental Engineering and Management Journal › Vol. 15 › Nr. 2 The work studies the degree of heavy metal pollution in water, sediment and soil in the industrial platform area from Ramnicu
Valcea, Romania. The water and sediment samples were collected from three locations of the Olt River, in two distinct periods,
February and June 2010. Concentrations of nickel, copper and cadmium were analyzed. The soil samples were collected from
eight points and the same elements were analyzed, in the above mentioned interval of time.
The results of water and sedime... Autori: Mihaela Iordache ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26961
ADSORPTION OF PHENOL WITH THE GRAFTED POLYMER OF P(MMA-MAH)- PEGME IN AQUEOUS SOLUTION
Environmental Engineering and Management Journal › Vol. 15 › Nr. 2 The grafted polymer of P(MMA-MAh)- PEGME synthesized was used as adsorbent to remove phenol in aqueous solution.
Through the adsorption research of phenol, it was found the removal percentage (%) of phenol was promising when pH was less
than 6. With the adsorbent dose increasing, the removal percentage increased, meanwhile the adsorption amount qe (mg·g-1)
correspondingly decreased. It was taken 35h for the phenol adsorption with the grafted polymer to reach the equilibrium. The
study... Autori: Yun Huang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26966
EVALUATION ON THE RURAL DRINKING WATER QUALITY IN A CENTRALIZED SUPPLIED AREA OF CHINA
Environmental Engineering and Management Journal › Vol. 15 › Nr. 2 As a result of the rapid development of China’s economy, many surface and groundwater have become polluted. Assuring high
quality drinking water, especially for the rural areas has recently received much attention. In this study, the drinking water quality
in one centralized water supply network was evaluated by analyzing 28 pollutant indices at 35 sampling points. It was determined
that the concentrations of most organoleptic and physical indices were stable in all the water samples. T... Autori: Wendong Wang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26967
SEASONAL INFLUENCE AND RISK ASSESSMENT OF HEAVY METALS CONTAMINATION IN GROUNDWATER, ARJAAT VILLAGE, MOROCCO
Environmental Engineering and Management Journal › Vol. 15 › Nr. 3 The application of chemical fertilizers and fungicides is an important source of heavy metals into the agricultural soil. Leaching
and weathering can facilitate the transport of the contaminants through soil to the groundwater. In most rural areas, groundwater
is used for drinking and irrigation purposes, without any treatment, population being exposed to direct contamination. The study
area in this paper, Arjaat Village from Rabat Salé Zemour Zaer Region of Morocco, matches into this ... Autori: François Xavier Nshimiyimana ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26980
IDENTIFYING HISTORIC POLLUTION ON LAKE BACAU I, ROMANIA USING GIS AND SATELLITE IMAGES
Environmental Engineering and Management Journal › Vol. 15 › Nr. 3 The Lake Bacau I, located in Bacau City, Romania was built in 1966 with a double purpose: as reservoir belonging to the energy
system of the Bistrita River and to provide the water needed for the industrial units located in the area. Also, for more than 40
years, the lake was used by the same plants to discharge the wastewater, more or less treated. In present, most of the industrial
units are closed and the discharge of wastewater in the lake is banned, the area being used mainly for recreat... Autori: Maria-Ema Faciu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26987
GEOCHEMISTRY AND QUALITY ASSESSMENT OF SURFACE WATER IN AN ACTIVE COAL WASHING PLANT OF NORTHERN IRAN
Environmental Engineering and Management Journal › Vol. 15 › Nr. 4 Drainage water and tailings impoundments water geochemistry (pH, EC, alkalinity, trace element concentrations, major ions) were
studied at the Anjir Tangeh coal washing plant. The drainage water with neutral to alkaline pH values, high SO42- concentration
and low metal content represented typical neutral alkaline mine drainage (NAMD). According to the Stiff and Piper diagrams, the
majority of water samples classified into Ca-Mg-HCO3- type except drainage and processing water which were placed... Autori: Majid Shahhosseini ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26997
ASSESSING THE ROLE OF Phragmites australis IN WASTEWATER TREATMENT THROUGH RESPONSE SURFACE METHODOLOGY
Environmental Engineering and Management Journal › Vol. 15 › Nr. 4 Treatment of domestic wastewater using constructed wetland system vegetated with Phragmites australis was studied at lab
scale. Response surface methodology (RSM) a mathematical model was employed for analyzing the effect of independent factors
(inlet flow rate, outlet flow rate, retention time) on wastewater parameters e.g. electrical conductivity, BOD5, COD, nitrates,
phosphates, total solids, suspended solids, heavy metals in order to maximally treat wastewater. All independent variables w... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26999
INVESTIGATION OF AMMONIUM ION ADSORPTION ONTO REGENERATED SPENT BLEACHING EARTH: PARAMETERS AND EQUILIBRIUM STUDY
Environmental Engineering and Management Journal › Vol. 15 › Nr. 4 The release of nitrogen compounds into the environment is a major concern worldwide. Different studies howed that recycled
materials have a high removal capacity for pollutants. Bentonite and its major clay minerals, smectites clays are common
bleaching agents used for oil refinery bleaching and known as bleaching earth (BE). In this study regeneration of spent bleaching
earth (SBE) acquired from the vegetable oil industry was surveyed via different methods and the regenerated spent bleaching... Autori: Mohammad Malakootian ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27000
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
EFFECT OF CARBONIZATION ON BANANA PEELS FOR REMOVAL OF CADMIUM IONS FROM AQUEOUS SOLUTION
Environmental Engineering and Management Journal › Vol. 15 › Nr. 4 Adsorption studies of cadmium(II) were conducted on 623oK or 723oK carbonized banana peels named as BP623 and
respectively BP723 as well as on the dried ones (BP). Carbonization enhances the quality of organic by-product used as
adsorbent, reduces the equilibrium time and improves the quality of the final product (water). Evaluation of the effects of pH,
contact time and solution temperature showed that the uptake of cadmium(II) ions was highly dependent on these factors, and
increased with ... Autori: Josiane Ponou ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27009
ARSENIC REMEDIATION OF AQUEOUS MEDIA USING PINUS ROXBURGHII SARG. (PINOPHYTA) BARK
Environmental Engineering and Management Journal › Vol. 15 › Nr. 4 The arsenic removal from aqueous medium was investigated through adsorption by employing finely powdered bark of Pinus
roxburghii Sarg. The batch mode laboratory scale experiments were conducted to investigate the removal efficiency of Pinus
bark against total arsenic and the effect of pH, contact time, adsorbent dose and initial adsorbate concentration on adsorption to
optimize the process. Langmuir and Freundlich isotherms were used to validate the adsorption data and respective constants w... Autori: Syed Hasnain Shah ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27013
REMOVAL OF HEXAVALENT CHROMIUM FROM WATERS BY MEANS OF A TiO2-Fe3O4 NANOCOMPOSITE
Environmental Engineering and Management Journal › Vol. 15 › Nr. 5 This paper aims to establish the capacity removal of hexavalent chromium [Cr(VI)] from wastewaters using a TiO2 – Fe3O4 based
nanocomposite. Latest researches in the field point adsorption as a better option for removal of heavy metal ions from waters, this
method being more efficient and cost effective, in comparison with other advanced methods like reverse osmosis, ion exchange,
nanofiltration, etc. Based on this information, the goal of this work had as purpose the obtaining, charact... Autori: Andra Predescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27025
A. hippocastanum L. AND T. cordata MILL. AS BIOMONITORING PLANTS FOR AIR POLLUTION IN URBAN AREAS. A CASE STUDY: CITY OF CLUJ-NAPOCA
Environmental Engineering and Management Journal › Vol. 15 › Nr. 5 Air quality became a concern of highest priority in cities and town agglomerations, worldwide. Professional environmental
monitoring strategies are prerequisites for supplying appropriate programmes destined to maintain air quality. Due to their
capacity of bioaccumulation, tree species may be used as biomonitoring agents within programmes of monitoring air quality in
urban spaces. The present study aims to emphasize the ability of A. hippocastanum L., and T. cordata Mill. leaves to be used a... Autori: Ilie Covrig ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27026
EVALUATION OF POWDERED ACTIVATED CARBON PERFORMANCE FOR WASTEWATER TREATMENT CONTAINING ORGANIC (C6H6 AND C6H5-CH3) AND INORGANIC (Pb+2 AND Zn+2) POLLUTANTS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 5 The removal of toxic heavy metal ions such as lead and zinc from industrial and mining wastewaters has been widely studied
because their existence in surface and underground water is responsible for several types of health problems caused to animals
and human beings. Also, there are some organic compounds, which must be prevented from reaching in drinking water from
various sources of pollution. For these reasons in this paper the experiments were conducted to study the ability of activated
... Autori: Cristina Ileana Covaliu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27027
MAGNETIC NANOPARTICLES USED IN ENVINRONMENTAL ENGINEERING FOR Pb AND Zn REMOVAL
Environmental Engineering and Management Journal › Vol. 15 › Nr. 5 Maghemite nanoparticles (γ-Fe2O3) were synthesized in order to be used as magnetic adsorbent for two heavy metals, Pb(II) and
Zn(II), from aqueous solutions. γ-Fe2O3 was prepared from magnetite nanoparticles and was tested for single and binary aqueous
solutions. Efficiency removal (%) for single solutions appears only after 10 minutes and was higher than 80%. In case of binary
solutions, same results regarding efficiency removal were registered after 60 minutes, being almost 90% ... Autori: Ecaterina Matei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27029
MAPS OF HEAVY METALS IN CLUJ COUNTY SOILS DEVELOPED USING THE REGRESSION-KRIGING METHOD
Environmental Engineering and Management Journal › Vol. 15 › Nr. 5 Knowledge of the basic levels of heavy metal concentrations in soil and their spatial disposition, on a certain area, is particularly
important for economic activities, but especially for preventing and stopping pollution. The spatial distribution maps, obtained by
measurements performed (of a certain density), cover the entire studied area and are very useful. According to the literature
several methods are known for building such maps, most of them based on a simple mathematical interpolati... Autori: George-Călin Rogozan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27031
INFLUENCE OF SOME NATURAL ORGANIC ADDITIVES ON THE QUALITY OF VEGETAL COMPOST
Environmental Engineering and Management Journal › Vol. 15 › Nr. 5 Composting is one of the most used biowaste recycling method. The paper highlights the influence of some natural organic
additives such as cattle and poultry manure on the quality of compost and especially on the content in microelements and heavy
metals. The mature compost showed the following macro and microelements concentrations: total N 1.12-1.38%, P 0.56-0.90%,
K 0.68-0.92%, Ca 1.18-1.70%. Mg 0.38-0.66%. The compost that included cattle manure showed the highest content in humic
substa... Autori: Irina Smical ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27032
NATURAL AND WASTE MATERIALS AS GREEN SORBENTS FOR Cd(II) REMOVAL FROM AQUEOUS EFFLUENTS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 5 Removal of Cd(II) from aqueous streams is of special concern because of its very high toxicity and persistent nature. The
sorbents based on natural and waste materials have very promising performances in the treatment of Cd(II) contaminated waters.
Very few reviews are available that provide valuable information on the various aspects of the utilization of natural and waste
materials for Cd(II) metal ions removal. In this context, this review examines a wide range of materials as green sorben... Autori: Lavinia Tofan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27033
PHOTOCATALYTIC OXIDATION OF A HAZARDOUS PHENOLIC COMPOUND OVER TiO2 IN A BATCH SYSTEM
Environmental Engineering and Management Journal › Vol. 15 › Nr. 5 Recently, environmental scientists have been focused their attention on the occurrence and the elimination of specific organic
compounds in water. Among them, chlorophenols are considered to be a public health problem due to their carcinogenic
properties. Thus, there is an important need to find new strategies to efficiently transform these compounds to no toxic or inactive
by-products. In this work the photocatalytic removal of 2,4-dichlorophenol in water solution was investigated at laborat... Autori: Lidia Favier ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27034
DEVELOPMENT OF A MULTIPARAMETRIC QUALITY INDEX FOR WATER QUALITY MONITORING
Environmental Engineering and Management Journal › Vol. 15 › Nr. 5 The multi-parametric quality index (ICPM) is a dimensionless number used to evaluate the overall water quality and it is a useful
tool for policy makers and for the public. This study aims to introduce the ICPM algorithm. The ICPM was developed to assess
the water quality of the Lower Danube River using information obtained from the analysis of 41 water quality indicators from a
monitoring program during 2011-2014. ICPM used the data for the previous 28 months as reference to evaluate the lat... Autori: Violeta-Monica Radu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27035
COMPREHENSIVE COMPARISON OF A FEW VARIANTS OF CLUSTER ANALYSIS AS DATA MINING TOOL IN SUPPORTING ENVIRONMENTAL MANAGEMENT
Environmental Engineering and Management Journal › Vol. 15 › Nr. 6 A few variants of hierarchical cluster analysis (CA) as tool of assessment of multidimensional similarity in environmental dataset
are compared. The dataset consisted of analytical results of determination of metals (Na, K, Ca, Sc, Fe, Co, Zn, As, Br, Rb, Mo,
Sb, Cs, Ba, La, Ce, Sm, Hf and Th) in ambient air dried and kept alive, by the means of hydroponics, moss baskets collected in
12 locations on the area of Tricity (Poland). The selected urban locations covered sites of various anthropoge... Autori: Aleksander Astel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27046
DISTRIBUTION OF HEAVY METALS IN SOILS IN A POSTGLACIAL RIVER VALLEY - A GEOCHEMICAL LANDSCAPE APPROACH
Environmental Engineering and Management Journal › Vol. 15 › Nr. 6 The paper deals with the amounts of total and plant available forms of heavy metals (Pb, Cr and Cu) and relation between soil
properties in three catenas in postglacial area of the Łyna River valley, NE Poland. The results were presented on the background
of four geochemical landscapes distinguished within the study area: eluvial or trans-eluvial, eluvial accumulative, trans-superaqual
and super-aqual. The average total content of heavy metals amounted to: Pb – 14.05 mg kg-1 d.m., ... Autori: Paweł Sowiński ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27058
OPTIMIZATION OF THE BIOSORPTION OF Cr3+, Cd2+ AND Pb2+ USING A NEW BIOWASTE: Zea mays SEED CHAFF
Environmental Engineering and Management Journal › Vol. 15 › Nr. 7 This study highlights the potential use of yellow Zea mays seed chaff (YZMSC) biomass as a biosorbent for the removal of Cr3+,
Cd2+ and Pb2+ ions from aqueous solutions. Fourier transformed Infrared analysis of the biomass suggests that YZMSC biomass is
basically composed of cellulose and methyl cellulose. The biosorption capacities, qmax, of YZMSC biomass for Cr3+, Cd2+ and
Pb2+ are 14.68, 121.95 and 384.62 mg/g respectively. Biosorption equilibrium was achieved at 20, 30 and 60 min for Cr3+... Autori: Jonathan Oyebamiji Babalola ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27083
ADSORPTION OF Zn2+ AND Ni2+ IONS FROM AQUEOUS SOLUTION ONTO Phyllanthus debilis: KINETICS & EQUILIBRIUM STUDIES
Environmental Engineering and Management Journal › Vol. 15 › Nr. 7 This work evaluates the potential of Phyllanthus debilis for the adsorption of Zn2+ and Ni2+ ions using synthetic solutions.
Adsorption experiments were performed in order to examine the effect of pH, contact time, biomass concentration and initial
metal ion concentration in the removal process, in a batch mode. The results revealed that the adsorption is highly pH dependent.
The adsorption of Zn2+ and Ni2+ ions were concentration dependent and increased from 2.446 to 8.688 mg/g for Zn2+ and ... Autori: Mohammad Aslam ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27084
BIOREMOVAL OF TRIVALENT CHROMIUM USING INDIGENOUS Bacillus species A BIOFILM BASED APPROACH
Environmental Engineering and Management Journal › Vol. 15 › Nr. 7 Heavy metal pollution is a major source of aquatic contamination and has deleterious effect on the environment, therefore
treatment of the polluted sites and wastewater becomes very essential. Biofilm based bioremoval of heavy metals have been a
new area of research. Bacterial strains belonging to the genus Bacillus, isolated from chromium polluted soil (Palar river basin,
India) have been employed as consortium for Cr(III) removal from chrome tanning effluent. The bacterial isolates were fou... Autori: Aafreen Fathima ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27086
CHANGES IN LOW MOLECULAR WEIGHT ORGANIC ACIDS AND ANTIOXIDATIVE ENZYME ACTIVITIES OF WETLAND PLANTS UNDER METAL STRESSES
Environmental Engineering and Management Journal › Vol. 15 › Nr. 7 The release of low molecular weight (LMW) organic acids under lead (Pb) and zinc (Zn) stresses in Typha latifolia (T. Latifolia)
and Vetiver zizanioides (V. zizanioides) were investigated. In addition, changes in antioxidative enzymes: superoxide dismutase
(SOD) and peroxidase (POD) in the leaves of T. Latifolia under Pb stress were also examined. Amongst the eight types of LMW
organic acids detected in the present study, oxalic acid was found to be the most dominant during Pb and Zn treatmen... Autori: Yu Bon Man ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27092
PAH REMOVAL EFFICIENCY IN SURFACTANT-ENHANCED SOIL WASHING SYSTEMS: INFLUENCE OF PAH RING NUMBER AND SOIL PROPERTIES
Environmental Engineering and Management Journal › Vol. 15 › Nr. 8 Triton X-100 (TX100) and Tween 80 (TW80) were used to study the decontamination of polycyclic aromatic hydrocarbons
(PAHs) in the bulk and different size fractions of soil samples from a former coke oven plant. The effects of PAH ring number,
initial concentration and soil total organic carbon (TOC)/black carbon (BC) contents on PAH removal efficiencies were analyzed.
Surfactant washing for the bulk sample showed clear relation between the removal efficiency and PAH ring number. When the
sur... Autori: Helian Li ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27093
SEQUESTRATION OF COPPER (II) FROM SIMULATED WASTEWATER USING PRETREATED RICE HUSK WASTE BIOMASS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 8 This paper reports the potential of rice husk waste biomass to remove copper (II) from simulated wastewater under different
experimental conditions. For this, rice husk has been pre–treated by boiling, formaldehyde and concentrated sulphuric acid.
Fourier Transform Infrared Spectroscopy, Scanning Electron Microscopy and Energy dispersive analysis X–ray analyses were
performed before and after adsorption, to explore number and position of the functional groups available for copper ... Autori: Manjeet Bansal ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27095
COMPARISON OF SOME NON-CONVENTIONAL SORBENTS FOR THE REMOVAL OF ARSENIC FROM WATERS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 8 Iron humate (IH) produced as a waste by-product during the industrial manufacture of humic substances from young brown coal
was tested as a new cost-effective sorbent for the removal of inorganic arsenic from waters. Its removal efficiency was compared
with that of two other non-conventional sorbents – magnetite and oxihumolite (weathered brown coal). Magnetite and IH have
been found to be effective in removing both forms of inorganic arsenic (arsenite and arsenate) from aqueous solutio... Autori: Pavel Jano ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27098
IMPACT OF BIOSTIMULATION AND BIOAUGMENTATION AS BIOREMEDIATION SYSTEMS ON DIESEL CONTAMINATED SOILS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 8 This paper analyzes and compares the effects of bioremediation on total petroleum hydrocarbon (TPH) degradation using
composting techniques as well as biostimulation and bioaugmentation approaches. Compost and sludge were added as organic
amendments with the dual purpose of providing both nutrients and microorganisms to the contaminated soil. In addition, the
effect of inoculation with white-rot fungus Trametes versicolor was assessed. Two different types of soils were considered: a
poor soi... Autori: Juliana Abraham ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27101
ON THE PRESENCE OF ORGANOPHOSPHORUS PESTICIDES IN DRAINAGE WATER AND ITS REMEDIATION TECHNOLOGIES
Environmental Engineering and Management Journal › Vol. 15 › Nr. 8 This study was carried out to monitor the presence of organophosphorus in drainage water (Kafr El-Sheikh (Kotshinar Drainage),
Fowa (Fowa Drainge No.11), Metobess (El-Hokss Drainage), Beila (Karakat Drainage), Balteem (Hafeer Shihabeldeen
Drainage), Nashart Drainage and El-Hamoul (El-Hamoul Drainage) in Kafr-El-Sheikh Governorate, Egypt. Furthermore, the
efficacy of chemical (advanced oxidation processes) and bioremediation (effective microorganisms) for chlorpyrifos removing in
drainage wat... Autori: Aly Derbalah ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27104
ECO-FRIENDLY PRODUCTION OF CHEMICALS 1. IMPROVEMENT OF ENZYMATIC PRODUCTION OF ACETOPHENONE BY DIRECT EXTRACTION
Environmental Engineering and Management Journal › Vol. 15 › Nr. 8 Acetophenone can be enzymatically produced by conversion of methylbenzylamine using transaminase. The enzymatic process
is strongly affected by the product inhibition, thus requiring the acetophenone removal from the media during its synthesis. In
this purpose, the individual and selective extraction of acetophenone and methylbenzylamine with the biocompatible solvent nheptane
containing 1-octanol, D2EHPA or TOA has been analyzed at three values of pH (5, 7, and 9). Regardless of the solvent
... Autori: Lenuţa Kloetzer ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27111
EVALUATION OF A PILOT-SCALE SEQUENCING BATCH BIOFILTER GRANULAR REACTORS (SBBGR) SYSTEM FOR MUNICIPAL WASTEWATER TREATMENT
Environmental Engineering and Management Journal › Vol. 15 › Nr. 9 Sequencing Batch Biofilter Granular Reactors (SBBGRs) represent an innovative technology; coupling granular and attached
biomass and operating in a batch mode. These systems allow good removal rates with low sludge production and space requirement.
A particular application, consisting of an aeration unit and an upflow SBBGR in series, has been tested at pilot scale. The pilot
system was installed at a conventional activated sludge plant and fed with average-strength urban wastewater after pre... Autori: Paolo Cirello ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27123
HETEROGENEOUS PHOTO-FENTON DEGRADATION OF QUINOLINE WITH A NOVEL INTERNAL CIRCULATING FLUIDIZED-BED REACTOR
Environmental Engineering and Management Journal › Vol. 15 › Nr. 9 The removal of quinoline from synthetic wastewater by heterogeneous photo-Fenton in a novel internal circulating fluidized-bed
reactor was investigated systematically. The flow field in the reactor was simulated by FLUENT software conjoined with tracer
particles experiment, and the influence of reaction parameters such as initial quinoline concentration, catalysts dosage and H2O2
dosage were evaluated. Results indicated that the designed reactor was suitable for the heterogeneous photo-Fenton... Autori: Ran Zhang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27142
REMOVAL OF PHTHALIC ACID DIESTERS IN THE MUNICIPAL SOLID WASTE INCINERATION PLANT LEACHATE TREATMENT PROCESS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 9 The removal of phthalic acid diesters PAEs, specifically di-n-butyl phthalate (DBP) and di(2-ethylhexyl) phthalate (DEHP), from
leachates of a municipal solid waste incineration plant treatment process was studied. The leachates originated from the adjusting
unit, the biochemical unit, the ultrafiltration membrane unit, and the reverse osmosis membrane unit. The initial concentrations of
DBP and DEHP were 250.5 and 332.3 μg/L, respectively, which were correspondingly reduced to 4.2 and 2.2... Autori: Hongyuan Liu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27143
REMOVAL OF AMMONIA NITROGEN FROM SWINE WASTERWATER BY ELECTROOXIDATION USING Ti/Mn-Ni/SnO2-Sb-CeO2 ANODE
Environmental Engineering and Management Journal › Vol. 15 › Nr. 10 An electrochemical oxidation system using Titanium-based material as anode was setup and used to remove ammonium nitrogen
(NH4-N) from swine wastewater. The effects of electrode material, current density, pH, and chlorine ion concentration were
evaluated by removal rate of NH4-N and energy consume. The results showed that the NH4-N removal rate reached 98.5% using
Ti/Mn-Ni/SnO2-Sb-CeO2 material as anode under the conditions: detention time of 60 minutes, pH of 8-10, current density of 20
mA/... Autori: Xuewen Yi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27146
THERMOPHLIC COMPOSTING PERFORMANCE OF PIG MANURE SPIKEDWITH CARBADOX
Environmental Engineering and Management Journal › Vol. 15 › Nr. 10 Carbadox is a veterinary antibiotic and widely used in livestock production as feed additives. Carbadox and its metabolites have the potential of provoking a tumor-inducing mutation. In this study, the influence of carbadox addition on composting performance and its removal during thermophilic composting were investigated. The results showed that the carbadox addition slightly influenced pH variation and C/N ratio, and also improved the decomposition of organic matter. However, XRD analysis indi... Autori: Lin Shi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27147
MONITORING BEHAVIORAL RESPONSES OF ZEBRAFISH (Danio rerio) AS A BIOMARKER FOR IDENTIFYING CADMIUM AND DELTAMETHRIN IN WATER
Environmental Engineering and Management Journal › Vol. 15 › Nr. 10 This study investigated the different behavioral responses of zebrafish (Danio rerio) under sudden stress from two types of
chemicals (heavy metals and insecticides) and explored the correlations of behavioral responses and several well-known
biomarkers. Adult zebrafish were exposed to cadmium (Cd) and deltamethrin for 5 hours. An increase in avoidance speed and
turning frequency was first detected behavioral response. The duration of hyperactivity was almost 50 min in the deltamethrin
expos... Autori: Yi Huang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27149
TREATMENT OF DIGESTED PIGGERY WASTEWATER WITH A MEMBRANE BIOREACTOR
Environmental Engineering and Management Journal › Vol. 15 › Nr. 10 A submerged membrane bioreactor (MBR) was applied to treat digested piggery wastewater (DPW). The removal of chemical
oxygen demand (COD), ammonium-nitrogen (NH4-N), two kinds of heavy metals and ten kinds of antibiotics were studied. The
hydraulic retention time (HRT) was gradually shortened from 12 days to 2.7 days, by which correspondingly the volumetric
COD loading rate was increased from 0.4±0.1 to 2.8±0.6 kg /(m3·d) and volumetric NH4-N loading rate was increased fr... Autori: Rui Liu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27150
ENHANCED DEGRADATION OF CHLORAMPHENICOL IN SOIL USING ACTIVATED CARBON FIBER SUPPORTED NANOSCALE ZEROVALENT IRON COUPLED WITH MICROWAVE IRRADIATION
Environmental Engineering and Management Journal › Vol. 15 › Nr. 10 The objective of this research was to study the degradation of chloramphenicol (CAP) in soil using activated carbon fiber
supported nanoscale zerovalent iron (ACF/nZVI) coupled with microwave (MW) irradiation. Compared to ACF/MW, nZVI/MW
and MW alone, the ACF/nZVI/MW system had a higher degradation efficiency. A Box-Behnken experimental design was
employed to analyse relative significance of independent variables A (irradiation time), B (MW power), and C (MW absorber
dosage), and combined ef... Autori: Wengui Liu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27154
MITIGATION OF HEAVY METAL ACCUMULATION IN RICE GRAIN WITH SILICON IN ANIMAL MANURE FERTILIZED FIELD
Environmental Engineering and Management Journal › Vol. 15 › Nr. 10 Animal manure is widely used as organic fertilizer for crops. However, high concentrations of heavy metals in animal manure are of great concern. In this study, we found that chicken and pig manure compost contain high concentrations of arsenic (As), cadmium (Cd), copper (Cu) and zinc (Zn), and the concentrations of these heavy metals in the pig manure were higher than those in the chicken manure. Chicken or pig manure compost fertilization elevated the concentrations of these heavy metals in th... Autori: Guilan Duan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27155
OZONATION OF OXYTETRACYCLINE IN THE PRESENCE OF ACTIVATED CARBON SUPPORTED CERIUM OXIDE
Environmental Engineering and Management Journal › Vol. 15 › Nr. 10 Ozonation of oxytetracycline in aqueous solution with an activated carbon (AC)-supported cerium oxide (CeO2/AC) catalyst was
conducted. The activity and stability of CeO2/AC, and the effects of ozone dosage, catalyst dosage, reaction temperature, initial
oxytetracycline concentration, and initial pH on the catalytic activity of CeO2/AC for the removal efficiency of total organic
carbon (TOC) were investigated. It was found that CeO2/AC catalyst was efficient in TOC removal during ozonation of... Autori: Zheng-Qian Liu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27156
IMPACT OF COD:N RATIO ON N2O EMISSIONS DURING LIVESTOCK WASTEWATER TREATMENT VIA THE NITRITE PATHWAY
Environmental Engineering and Management Journal › Vol. 15 › Nr. 10 This study examines the impact of the chemical oxygen demand to nitrogen ratio (COD:N) on nitrous oxide (N2O) emissions
during N removal via a nitrite (NO2−) pathway for synthetic livestock wastewater treatment. Based on typical cycle operations,
1.07 ± 0.07% of the incoming N load was emitted as N2O at a COD:N ratio of 3:1. This was higher than the 0.83 ± 0.08%
emitted at a COD:N ratio of 6:1. The low COD:N ratio in the synthetic livestock wastewater may thus cause increa... Autori: Qiang Kong ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27157
ON THE POLLUTION WITH ANTIBIOTICS, HEAVY METALS AND CONVENTIONAL INDICATORS IN DIGESTED WASTEWATER FROM LARGE-SCALE PIG FARMS IN JIAXING CITY, CHINA
Environmental Engineering and Management Journal › Vol. 15 › Nr. 10 Occurrence of antibiotics and heavy metals, together with concentrations of conventional pollution indicators were assessed in
digested piggery wastewater (DPW) generated in ten large-scale pig farms in Jiaxing City, China. Results showed that water
quality of DPW varied in different farms as well as in different seasons. Digested piggery wastewater pollution tended to be less
serious in Summer than in Spring, Autumn and Winter. Conventional pollution indicators of chemical oxygen demand (COD... Autori: Rui Liu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27159
AN NOVEL UCSB-ANR INTEGRATED SYSTEM FOR EFFICIENT REMOVAL OF ORGANIC MATTER AND AMMONIA NITROGEN FROM SWINE WASTEWATER
Environmental Engineering and Management Journal › Vol. 15 › Nr. 10 A combined system of up-flow cyclic sludge bed (UCSB) and aerobic nitrification reactor (ANR) was designed for organic
matter and ammonia nitrogen (NH4-N) removals of swine wastewater. The UCSB had one acidogenic zone for hydrolytic
acidification to solve the problem of poor carbon source in swine wastewater, and the other zone for denitrification. Results
showed that average removals of the chemical oxygen demand (COD) and NH4-N were 92% and 95%, respectively, under the
following conditions... Autori: Jie Zhang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27160
PILOT FIELD DEMONSTRATION OF WOODCHIP BIOFILTERS IN THE TREATMENT OF SEPARATED PIG MANURE DIGESTATE
Environmental Engineering and Management Journal › Vol. 15 › Nr. 10 Three pilot-scale biofilters consisting of 1 m aerobic woodchip layers and 0.5 m submerged woodchip layers were constructed to
treat the separated pig manure anaerobic digestate (SAD). Reductions of 54% dry matter, 80% of chemical oxygen demand
(COD), 93% of 5-day biochemical oxygen demand (BOD5), 86% of total nitrogen (TN) and 79% of total phosphorus (TP) were
achieved. The study results confirm the occurrence of nitrification in the aerobic woodchip layers and denitrification in the
submer... Autori: Kathy Carney ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27161
17Β-ESTRADIOL DEGRADING BACTERIA IN SEQUENCING BATCH REACTORS FOR SWINE WASTEWATER TREATMENT
Environmental Engineering and Management Journal › Vol. 15 › Nr. 10 Two 17β-Estradiol (E2) degrading strains were isolated from the activated sludge of swine wastewater bio-treatment aerobic facility and affiliated to Bacillus subtilis based on 16S rRNA gene sequencing. The degradation rates were more than 90–95% at 37 °C in 4 days when E2 was the sole carbon source. Steady and effective nutrients and estrogen removals were achieved in three parallel sequencing batch reactors (SBRs) treating real swine wastewater for 90 days, which contributed to ... Autori: Meixue Chen ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27162
EQUILIBRIUM STUDIES ON THE BIOSORPTION OF LEAD (Pb2+) CONTAMINATED WASTEWATER USING CATTAILS LEAVES
Environmental Engineering and Management Journal › Vol. 15 › Nr. 10 Dried Typha angustifolia (TA) leavesor commonly known as the common cattail were evaluated as an adsorbent for the
adsorption of lead in synthetic aqueous solutions. Equilibrium studies were conducted in a batch mode and the selected sorption
isotherms were then applied. Equilibrium was achieved after 8 hours. The selected sorption isotherms were the Langmuir,
Freundlich, D-R and Temkin model. Data fitting was done based on linear regression analysis. The adsorption system fitted the
Langmui... Autori: Yen Ling Sharain-Liew ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27166
ELECTROCHEMICAL CATALYTIC DEGRADATION AND BIODEGRADABILITY ENHANCEMENT OF REAL TEXTILE WASTEWATER BY ANODIC AND CATHODIC REACTIONS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 10 An electro-Fenton process was carried out using undivided cell containing tridimensional graphite felt cathode for treatment of real textile wastewater. The study is essentially focused on effects of pH, applied current and transition metal types (Fe2+ and Cu2+) as catalysts on the electrochemical degradation efficiency based on color and COD removal and BOD5/COD value. The results indicated that pH 3 and applied current of 150 mA are the optimum conditions for decolorization and COD removal of ... Autori: Akbar Eslami ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27167
EFFECTIVE MERCURY REMOVAL USING A NEW DEVELOPED POLYMER CONTAINING 2-(2′ THIAZOLYLAZO) P-CRESOL
Environmental Engineering and Management Journal › Vol. 15 › Nr. 11 A new material containing 2-(2′ thiazolylazo) p-cresol (TAC) grafted poly acrylamide (PAA) was prepared and its adsorption
ability was studied for the removal of inorganic mercury from aqueous media. Adsorption of Mercury (II) ions from aqueous
solution was investigated in detail as a function of mercury concentration, pH, ionic strength, and temperature. The adsorption
data were analyzed by using the Langmuir, Freundlich and Dubinin-Radushkevich (DR) models. The adsorption of Mercury (... Autori: Selçuk Şimşek ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27170
PROCESS RESPONSE OF WASTEWATER TREATMENT PLANT UNDER LARGE RAINFALL INFLUENT FLOW
Environmental Engineering and Management Journal › Vol. 15 › Nr. 11 New processes of wastewater treatment plant (WWTP) to treat large rainfall influent flow of upriver combined drainage system were proposed by taking a WWTP in Tianjin as an example. InfoWorks and Biowin software were applied to simulate the upriver combined drainage system and the performance of proposed processes, respectively. After the model calibration and validation, the influence of rainfall anticipated on influent flow, water quality, and response operation of WWTP were studied. The resul... Autori: Yin Jin ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27171
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
USE OF CHITOSAN-IRON(III) FOR THE ADSORPTION OF THE DYE ACID RED 29: ISOTHERM, KINETIC, REUSE AND FACTORIAL DESIGN
Environmental Engineering and Management Journal › Vol. 15 › Nr. 11 In this study, chitosan-iron(III) was used as adsorbent of the dye acid red 29. The effect of pH, temperature and concentration of the dye on the adsorption capacity were evaluated. The maximum adsorption capacity was calculated from the adsorption isotherms which were well fitted by Sips isotherm model. The process followed the kinetic model of pseudo-second-order. The activation parameters showed that the adsorption process is spontaneous and favorable. A decrease in adsorption capacity was ob... Autori: Carla Albertina Demarchi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27181
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
CHITOSAN-BASED ADSORBENTS GELS FOR THE REMOVAL OF TRIS-AZO DYE: ISOTHERMS AND KINETICS STUDIES
Environmental Engineering and Management Journal › Vol. 15 › Nr. 11 The adsorbent gels utilized in this research project were synthesized from non-commercially available chitosan, obtained by deacetylation of chitin, which was isolated from fermented shrimp waste by a major local industrial food biopolymer. Chitosan-based adsorbent gels were used for the removal of a tris-azo dye (Direct Blue 71) from aqueous solutions. Sorption experiments focused on the chemical modification of chitosan using two cross-linking agents, sodium tripolyphosphate (TPP) and glutaral... Autori: Reyna G. Sánchez-Duarte ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27184
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
REMOVAL OF PHOSPHORUS FROM WASTE OF A BEVERAGE INDUSTRY BY STRUVITE PRECIPITATION
Environmental Engineering and Management Journal › Vol. 15 › Nr. 11 Waste from a cola beverage industry containing high concentration of phosphorus (P) was treated by the struvite precipitation method. The influence of excess of ammonia and order of reagent addition were evaluated as independent variables on the removal and recovery of phosphorus from cola beverage waste. It was removed about 95% of P of the sample in a short reaction time. The precipitated crystals were identified and analyzed by X-ray Diffraction (XRD), infra-red spectroscopy (IR) and surface ... Autori: Wilson Roberto Barreto dos Santos ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27188
COMPARISON OF DIFFERENT DURATION OF ANAEROBIC AND AEROBIC PHASES ON ACID RED 18 REMOVAL IN SEQUENCING BATCH REACTORS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 11 In this work, the effect of cyclic anaerobic/aerobic conditions on the biodegradative capability of the mixed microbial culture for the azo dye Acid Red 18 was investigated in the sequencing batch reactors. For this purpose, five anaerobic/aerobic sequencing batch reactors were operated under the same operation conditions at different anaerobic/aerobic reaction times. The whole reaction time was 22-h with anaerobic/aerobic periods of 6/16, 10/12, 14/8, 18/4 and 22/0 (h/h) in An/ASBR1 to 5, respe... Autori: Mohammad Hakimelahi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27191
BIOREMEDIATION OF CHROMIUM(VI) FROM AQUEOUS SOLUTION BY Aspergillus niger: OPTIMIZATION OF PROCESS PARAMETERS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 11 Hexavalent chromium, Cr(VI), is one of the toxic heavy metals released into the environment by a number of industries, so it is crucial to limit its further discharge into the environment. In the present study, the aerobic reduction of Cr(VI) to less mobile and less toxic Cr(III) by Aspergillus niger was investigated. The potential of this fungus strain as biocatalyst was capable of resisting Cr(VI) up to 300 mg/L. The effects of the process parameters such as solution pH, initial Cr(VI) concent... Autori: Farshid Ghanbari ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27194
BIOSORPTION OF SULFONIC AZODYES ON SPRUCE WOOD SHAVINGS: KINETICS AND SORPTION MECHANISMS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 12 Various azodyes containing one or more sulfonic groups were removed from aqueous solutions by biosorption on untreated wood shavings from Picea abies. The sorption kinetics was described by the pseudo-first-order (PFO), pseudo-second-order (PSO) and modified pseudo-n-order (MPnO) equations, from which the MPnO model provided the best fit to the experimental data. The surface reaction was identified as a rate-limiting step governing the dye sorption on wood shavings, but a mixed kinetics (with a ... Autori: Pavel Jano ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27207
APPLICATION OF FLY ASH AS AMENDMENT IN AGRICULTURAL FIELD OF Avena sativa
Environmental Engineering and Management Journal › Vol. 15 › Nr. 12 Intensive cereal crops planted on soils from the Western part of Romania determine, annually, significant losses of essential microelements and macronutrients for plant development from the agricultural soil, which lead to the depletion of such lands. Fly ash (FA) resulted from coal combustion at the CET Timisoara power plant, can be used as supplement to an organic fertilizer, such as manure (M) to restore the balance of micro- and macronutrients, important to obtain healthy cereal crops and hi... Autori: Smaranda Masu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27208
ADSORPTIVE REMOVAL OF Cu (II) IONS BY DATE PITS: KINETIC AND EQUILIBRIUM STUDIES
Environmental Engineering and Management Journal › Vol. 15 › Nr. 12 Date pits were used as a low-cost adsorbent to study the effective removal of copper (II) ions in an aqueous solution on the basis of adsorption kinetics and isotherm equations. Before and after the adsorption process, the date pits were characterized by electron scanning microscope (ESM) as well as Infrared spectroscopy (IR). The effects of the pH, zero point of charge, the adsorbent mass, and the adsorbent particle size on the adsorption of copper (II) were also studied. Equilibrium data were ... Autori: Tarek E. Khalil ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27212
ION-EXCHANGE MECHANISM IN BIOSORPTION OF Pb2+ IONS FROM CONTAMINATED WATER BY BANANA STALK WASTE
Environmental Engineering and Management Journal › Vol. 15 › Nr. 12 Banana stalk (BS) waste is used to remove Pb2+ from aqueous solution. Equilibrium data were analyzed with Langmuir and Freundlich adsorption models, which fit better in the former equation. The qmax (maximum metal uptake capacity) for Pb2+ adsorption was 105.14 mg/g of BS at pH 5.0, which followed pseudo-second order kinetics model. IR spectra confirmed the participation of hydroxyl, amino, and acidic functional moieties in the removal of Pb2+. The major mechanism involved in the biosorption of ... Autori: Kashif Iqbal Sahibzada ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27214
CHARACTERIZATION AND UTILIZATION OF ALUNITE ORE FOR ADSORPTIVE REMOVAL OF ZINC: BATCH AND COLUMN STUDY
Environmental Engineering and Management Journal › Vol. 15 › Nr. 12 Adsorption equilibrium, kinetic and dynamic studies were done for removal of zinc (II) from aqueous solutions using alunite ore. The alunite sample was characterized by using X-ray fluorescence (XRF), optical microscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) porosimetry, differential thermal (DTA), and Thermogravimetric (TG) analyses. The batch equilibrium adsorption data of zinc (II) ions onto alunite particles were applied to some... Autori: Hoda Arabyarmohammadi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27216
CROSSFLOW MICROFILTRATION OF DISTILLERY STILLAGE: A RESPONSE SURFACE METHODOLOGY APPROACH
Environmental Engineering and Management Journal › Vol. 15 › Nr. 12 Stillage (distillery wastewater) is a major waste by-product from process of bioethanol production. It contains large amounts of organic matter and suspended solids, so it should not be disposed in the nature before previous treatment. This work studies the application of ceramic microfiltration membrane for stillage purification. Also, the influence of operating factors on permeate flux and removal efficiency was investigated using Response Surface Methodology. The factors considered for design... Autori: Vesna Vasić ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27218
BIODEGRADATION KINETICS OF MIXED MICROBIAL CULTURE UTILIZING 1,1-DCE AS THE SOLE CARBON SOURCE
Environmental Engineering and Management Journal › Vol. 15 › Nr. 12 The mixed microbial culture, isolated from the aerobic sludge was used to study biodegradation of 1,1-DCE as the sole carbon source in batch flasks. 1,1-DCE initial concentration in the medium was varied from 100μg/L to 1000μg/L. The maximum removal rate of 1,1-DCE was 89.2% obtained at 400μg/L 1,1-DCE concentration in the medium. The biodegradation kinetics of 1,1-DCE was found to follow three-half-order model at all initial 1,1-DCE concentrations with regression values greater than 0.... Autori: Shizong Wang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27219
REMOVAL OF TURBIDITY AND HUMIC ACIDS USING CHITOSAN AS A COAGULANT AID: MODELING WITH ARTIFICIAL NEURAL NETWORK
Environmental Engineering and Management Journal › Vol. 16 › Nr. 1 In the present study, the effect of chitosan as an eco-friendly coagulant aid was investigated for removing turbidity (bentonite) and humic acid (HA) in the coagulation process. The effects of various operational parameters such as initial pH of the solution (4-9), dosage of chitosan (1-4.5 mg/L), dosage of alum (10-40 mg/L) and initial turbidity (10-150 NTU) were investigated. An artificial neural network (ANN) model was used to predict the performance of turbidity removal efficiencies by coagu... Autori: Abdolmotaleb Seid Mohammadi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27223
DECOLORIZING OF REACTIVE DYES WASTEWATER VIA DOWN-FLOW HANGING SPONGE (DHS) SYSTEM
Environmental Engineering and Management Journal › Vol. 16 › Nr. 1 This study was carried out to assess the efficiency of down-flow hanging sponge (DHS) system for decolorizing the reactive dyes wastewater. The reactor was operated at different hydraulic retention times (HRTs) of 1.7, 3.5 and 6 h., and organic loading rates (OLRs) of 3.6, 2.2 and 1.3 g COD/l.d., respectively. The results obtained indicated that increasing the HRT from 1.7 to 3.6 h., significantly increased color and CODt removal efficiencies from 81±6.7 to 91.7 ±8.7% and from 24.2... Autori: Ahmed Tawfik ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27224
DEGRADATION OF CONCENTRATED TOLUENE VAPORS IN A UV/O3PROCESS COMBINED WITH BIOTRICKLING FILTRATION
Environmental Engineering and Management Journal › Vol. 16 › Nr. 1 This study compared performance of the O3/UV process and biotrickling filtration as standalone and combined system on elimination of toluene from a waste gas stream. The performance of the bench scale O3/UV reactor was investigated with inlet toluene concentration of 650 ppmv and reaction time of 7.5 s. The results demonstrated that the combined O3/UV process degraded 34.1% of toluene under the selected conditions. The biotrickling filter had a maximum elimination capacity of 125.6 g/m3.h, corre... Autori: Gholamreza Moussavi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27228
TECHNO-ECONOMICAL EVALUATION OF HEXAVALENT CHROMIUM REMOVAL BY ELECTROCOAGULATION PROCESS WITH THE AID OF POLYALUMINUM CHLORIDE AS COAGULANT: OPTIMIZATION THROUGH RESPONSE SURFACE METHODOLOGY
Environmental Engineering and Management Journal › Vol. 16 › Nr. 1 In this research, Response Surface Methodology (RSM) was employed to optimize five operating variables including initial pH, current, reaction time, initial hexavalent chromium concentration and dosage of polyaluminum chloride as a coagulant for the removal of hexavalent chromium and its relative operating cost by electrocoagulation process. Central Composite Design (CCD) was applied for the optimization process. The results showed that increase of polyaluminum chloride dosage was beneficial for... Autori: Sepideh Sadeghi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27230
KINETIC CONSTANTS DETERMINATION OF PETROLEUM REFINERY EFFLUENT TREATMENT IN A UASB REACTOR USING RSM
Environmental Engineering and Management Journal › Vol. 16 › Nr. 1 In this study, an upflow anaerobic sludge blanket (UASB) bioreactor at the mesophilic temperature (38ºC) was successfully used for the treatment of petroleum refinery effluents. Response surface methodology (RSM) was applied for the design and analysis of experiments to predict the behavior of the initial COD and the hydraulic retention time (HRT) in the bioreactor. A statistical analysis indicated that the models adequately represented the experimental data. At the optimal conditions, the ... Autori: Seyed Omid Rastegar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27233
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
MONITORING AND STATISTICAL ASSESSEMENT OF HEAVY METALS IN SOIL AND LEAVES OF Populus Nigra L
Environmental Engineering and Management Journal › Vol. 16 › Nr. 1 In this article we present the results of the study concerning the relationship between the concentration of trace elements (lead,
chromium, cadmium, cobalt, copper, zinc and nickel) in soil and in the leaves and bark of Populus nigra L. The samples were
collected in the period May 2010 – October 2010 in two areas from the Romanian North Littoral of Black Sea. The
concentrations of the trace elements in soil, leaves and bark were determined using Flame Atomic Absorption Spectrometry
(F... Autori: Lucica Barbeş ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27239
SILICA GEL MODIFIED WITH AMINO IMINE GROUPS AS AN ADSORBENT FOR METALLIC CATIONS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 1 In this study, silica gel initially reacted with N-(2-aminoethyl)-3-aminopropyl-triethoxysilane and subsequently with formaldehyde resulted in a modified solid that contained amino imine groups, Sil2NCH2. The solids were characterized by CHN elemental analysis, thermogravimetric analysis (TGA/DTG), FTIR spectroscopy, 13C solid-state NMR, and nitrogen adsorption/desorption measurements. The adsorption of Cd(II), Pb(II) and Cr(VI) ions onto Sil2NCH2 in aqueous solutions were examined to study the ... Autori: Franklin Pessoa Aguiar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27242
EFFECTS OF CERIA CONTENT ON PHYSICOCHEMICAL AND CATALYTIC PROPERTIES OF NANOSTRUCTURED CeO2/Al2O3 USED FOR CATALYTIC REMOVAL OF TOLUENE FROM WASTE GAS STREAMS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 2 The effect of ceria content on the physicochemical properties and catalytic performance of nanostructured CeO2/Al2O3 for removal of toluene from waste gas stream was studied. The properties of the catalysts were addressed using XRD, FESEM, BET, TPR-H2 and FTIR techniques. XRD patterns confirmed the formation of CeO2 with average crystallite size of 7.8-8.7 nm. FESEM images confirmed the presence of fine particles between 25.2-189.1 nm. BET results showed that nanostructured CeO2/Al2O3 had high s... Autori: Saeed Saedy ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27245
ORNAMENTAL ROCK SOLID WASTE: A LOW-COST SORBENT FOR ARSENIC(V) AND MANGANESE(II)
Environmental Engineering and Management Journal › Vol. 16 › Nr. 2 The capability of ornamental rocks solid waste (ORSW) as a low-cost sorbent was investigated in order to remove As(V) and Mn(II) from aqueous solution. Physical-chemical characterization analyses of the raw material presented albite and quartz as the main minerals. The solid waste presents low surface area (209.70 m2/g). The Langmuir, Freundlich, Sips (Langmuir-Freundlich), Redlich-Petersen and Tóth models were used to analyze sorption phenomena. The maximum sorption capability from the e... Autori: Fernando Jorge Santos Oliveira ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27246
EFFECT OF MICROWAVES ON PHOTOCATALYTIC DEGRADATION OF PHENOL AND CRESOLS IN A MICROWAVE-ULTRAVIOLET REACTOR
Environmental Engineering and Management Journal › Vol. 16 › Nr. 2 A Microwave-Ultraviolet reactor was developed and the effect of microwaves on photodegradation of various phenols was studied using the reactor. The degradation study was carried out by six methods - microwave irradiation, photodegradation with
UV light, microwave and ultraviolet radiations (microwave irradiation in presence of TiO2, photodegradation with UV light in the presence of TiO2 and also simultaneous MW and UV irradiations in the presence of TiO2). The relative efficiencies of the degr... Autori: Singaram Karthikeyan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27248
LOW-COST TREATMENT OF GREY WATER AND REUSE FOR IRRIGATION OF HOME GARDEN PLANTS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 2 Reuse of grey water is an attractive option when available water supplies are limited, and can reduce demand on water supplies and provide additional water resource. This comparative research was conducted to assess the suitability and effects of reusing grey water, treated and untreated, as irrigation water for vegetables, compared with tap water. Tomato (Lycopersicon esculentum) and green bean (Phaseolus vulgaris) plants were selected as examples. The collected grey water samples were treated ... Autori: Jehad Y. Al-Zou by ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27254
EFFICIENCY OF A FISHPOND AT EAST CALCUTTA WETLANDS IN IMPROVEMENT OF WATER QUALITY
Environmental Engineering and Management Journal › Vol. 16 › Nr. 2 The Storm Water Flow (SWF) and the Dry Weather Flow (DWF) canals carry composite industrial and municipal effluent (nearly 50,000 m3 d-1) from Kolkata city. Wastewater from SWF and DWF canals is used for pisciculture at the East Calcutta Wetland (ECW) for nearly a century. A wastewater fed pisciculture pond was selected to study the efficiency of the pond in treatment of wastewater. Monthly changes of hydraulic variables viz. inflow and outflow rates, depth, hydraulic loading rates, detention ti... Autori: Abhishek Roy Goswami ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27255
CHARACTERIZATION OF SOIL HEAVY METAL CONTAMINATION AND POTENTIAL ECOLOGICAL RISK IN THE URBANRURAL TRANSITION ZONE OF TAIYUAN CITY, CHINA
Environmental Engineering and Management Journal › Vol. 16 › Nr. 2 Soil in industrial cities and their surrounding regions sustains high levels of contamination due to the intense industrialization and urbanization. Taiyuan, a city in northern China, and its surrounding regions are a hotspot for the development of heavy industry. To assess the environmental quality, we collected surface soil samples from Taiyuan’s urban–rural transition zone. We determined concentrations of Cr, Cu, Pb, Zn, As, Cd, and Hg. The primary inputs of Cr and As were pedogen... Autori: Jinchang Li ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27260
INFLUENCE OF ELECTRODE MATERIAL ON PERFORMANCE OF SEDIMENT MICROBIAL FUEL CELL REMEDIATING AQUACULTURE WATER
Environmental Engineering and Management Journal › Vol. 16 › Nr. 2 Non-availability of good quality water in sufficient quantities and the environmental impacts of used water discharges have led to the treatment and reuse of the aquaculture water contaminated with dissolved organics and ammonia rather than discharging it. This paper explores the effectiveness of in-situ sediment microbial fuel cell (MFC) for aquaculture water treatment along with generation of electricity. A sediment microbial fuel cell (SMFC) was designed and the efficiency of stainless steel ... Autori: Thypparampil Karunakaran Sajana ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27261
COMPETITIVE BIOSORPTION OF Pb(II), Cu(II), Cd(II) AND Zn(II) USING COMPOSTED LIVESTOCK WASTE IN BATCH AND COLUMN EXPERIMENTS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 2 Composted livestock waste (CLW) was studied as one low-cost material to remove Pb(II), Cu(II), Cd(II) and Zn(II) from simulated acid mine drainage (AMD) by batch and column experiments. The adsorption isotherm data were well fitted by the Langmuir model. The maximum monolayer adsorption capacities were 0.5485 mmol/g for Pb(II), 0.4092 mmol/g for Cu(II), 0.2246 mmol/g for Cd(II), and 0.1879 mmol/g for Zn(II) at pH 4.0. Due to the competition effect, the adsorption capacity of the single metal ion... Autori: Mingliang Zhang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27262
HEMP DECONTAMINATION OF POLY-METALLIC AQUEOUS SOLUTIONS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 3 This study investigates the adsorption of several metals in aqueous solution, by hemp materials (loose fibre and felted fibre). After characterization of the fibre, an extensive study was conducted on the adsorption properties of this material. The experiments were carried out in poly-metallic aqueous solutions containing Al, Co, Cr, Cu, Ni and Zn at a concentration of 1 mg L-1 and 10 mg L-1 each. The pH effect was found to lead to an optimum between pH 4 and 4.5. The kinetics of the adsorption ... Autori: Justine Bugnet ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27272
AMMONIUM ADSORPTION ON OXIDIZED EXFOLIATED GRAPHITE NANOPLATELETS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 3 Ammonium is an environmental contaminant encountered in water and soils, its admissible concentrations in soils and waters being established by legislation. Removal of ammonium ions from aqueous solutions from different matrix can be done with several sorbents, among which nano-adsorbents, such as oxidized exfoliated graphite nanoplatelets (ox-xGnP) offer practical solutions, based on their high specific surface area, associated sorption sites and efficiency of application. Several parameters su... Autori: Daniela Bogdan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27273
SYNTHESIS, CHARACTERIZATION AND FUNCTIONALIZATION OF MCM-41 FOR THE REMOVAL OF ORGANIC COMPOUNDS FROM WASTEWATERS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 3 In this study was synthesized MCM-41 mesoporous silica by hydrothermal treatment and funtionalized with titanium in order to obtain mesoporous materials with high surfacea area and photocatalytic activity in photodegradation of organic compounds as antibiotics. The functionalization of the synthesized support material was achieved by impregnation from alcoholic solution. The obtained materials (MCM-41) and (Ti-MCM-41) were characterized by X-ray diffraction (XRD), scanning electron microscopy (S... Autori: Cristina Orbeci ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27274
ASSESSMENT OF GROUNDWATER AND SURFACE WATER CONTAMINATION BY LANDFILL LEACHATE: A CASE STUDY IN NEAMT COUNTY, ROMANIA
Environmental Engineering and Management Journal › Vol. 16 › Nr. 3 The aim of this study was to determine the actual impact of the uncontrolled landfill site in Roman town, Romania on the water resource quality. The surface water and groundwater samples were collected quarterly in two time periods: January 2012 - June 2013, when the landfill was operational and July 2013 - December 2014, after the landfill was closed. The parameters analyzed in this study include: pH, biological oxygen demand (BOD5), chemical oxygen demand (COD), NH4+ Cl-, NO2-, NO3-, SO42-, he... Autori: Lacramioara Rusu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27283
TRACE ELEMENTS IN FISH TISSUE WITH COMMERCIAL VALUE OF THE DANUBE DELTA BIOSPHERE RESERVE
Environmental Engineering and Management Journal › Vol. 16 › Nr. 3 Researches and analysis of heavy metals concentrations in the fish species exploited as a food source are of great interest due to long term toxic effects on human health even at very low concentrations. Therefore, we have conducted this study in an area of great interest in terms of aquatic biodiversity, but also of tourism and trade. Depending on the degree of toxicity in delta aquatic ichtyofauna, five heavy metals (Cr, Cu, Hg, Ni, Pb) and a metalloid (As) concentrations were measured in the ... Autori: Adrian Burada ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27293
EFFECT OF SEWAGE SLUDGE APPLICATION ON WHEAT CROP PRODUCTIVITY AND HEAVY METAL ACCUMULATION IN SOIL AND WHEAT GRAIN
Environmental Engineering and Management Journal › Vol. 16 › Nr. 5 The present work illustrates the results of a long-term field experiment with sewage sludge used on agricultural land in order to assess the influence of sewage sludge on wheat crop productivity. The experimental research was conducted for three years as following: the evaluation of the agricultural use of sewage sludge in the year of application and its residual effect in grain and in soil for the next two years. The sewage sludge considered in the framework of the study was from Sfantu Gheorgh... Autori: Diana Mariana Cocarta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27303
RECENT DEVELOPMENTS IN ORGANIC CONTAMINATED SOIL REMEDIATION WITH THE USE OF THERMAL DESORPTION TECHNOLOGY
Environmental Engineering and Management Journal › Vol. 16 › Nr. 5 The purpose of this paper is to integrate recent results on the remediation of organic contaminated soils, and introduce a physical remediation method—thermal desorption technology. There are mainly four kinds of thermal desorption technology, which include rotary kiln, fluidized bed, microwave and vacuum strengthen far-infrared thermal desorption. Through comparing with four kinds of remediation methods, rotary kiln and fluidized bed are more mature technologies, which have high treatment... Autori: Zhongxin Tan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27310
REMOVAL OF DICLOFENAC FROM SECONDARY WASTEWATER EFFLUENTS BY FENTON BASED PROCESSES
Environmental Engineering and Management Journal › Vol. 16 › Nr. 4 This study considers the removal of diclofenac (an important representative of pharmaceuticals and personal care products - PPCPs) from the secondary effluents of Iasi municipal wastewater treatment plant by means of different advanced oxidation processes (homogeneous Fenton, photo-Fenton and photolysis), carried out in a laboratory scale reaction system. The influence of three qualitative or quantitative factors (Fe3+ concentration, the absence/presence of UV-A radiation and H2O2) was studied i... Autori: Cezar Catrinescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27322
Cu2+ REMOVAL FROM WASTEWATERS BY USING COMPOST AS SORBENT
Environmental Engineering and Management Journal › Vol. 16 › Nr. 4 The paper aims to present the sorption properties of two sorbent substrates (composts) prepared by aerobic fermentation from vegetables waste composted with beech sawdust (BR2) and beech ash (BC1) to be used for Cu2+ removal from wastewaters. The composts structures and surface properties were characterised in terms of active groups (FTIR), crystallinity (XRD), morphology (SEM), topography (AFM) and specific surface and pores analysis (BET), and the changes in properties after Cu2+ sorption were... Autori: Ileana Manciulea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27323
EXPERIMENTAL ASSESMENT OF NANOFILTRATION FOR THE REMOVAL OF CHLOROPHENOLS FROM AQUEOUS EFFLUENTS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 4 Chlorophenols, commonly found in industrial effluents, are considered as priority pollutants because they may cause severe environmental impacts and human health related problems. Nanofiltration (NF) represents an important option for the removal of chlorophenols present in aqueous effluents. This study presents some results on the performance of nanofiltration for the removal of 4-chlorophenol and 2,4-dichlorophenol from synthetic wastewaters considering the selection of adequate operating and ... Autori: Corina-Petronela Musteret ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27324
NEW MESOPOROUS TITANIUM OXIDE-BASED PHOTOACTIVE MATERIALS FOR THE REMOVAL OF DYES FROM WASTEWATERS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 4 The remarkable photocatalytic properties of titanium dioxide and the high adsorption capacity of the mesoporous materials were
combined to obtain active photocatalysts for the decomposition of Rhodamine 6G dye. The mesoporous TiO2 was obtained by
the controlled hydrolysis-condensation of titanium isopropoxide, using hexadecyl-trimethyl-ammonium bromide as template,
followed by calcination to remove the organic matter. Subsequently, this sample was doped with sodium wolframate and
platinum. T... Autori: Doina Lutic ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27325
ASSESSMENT OF ELECTROCOAGULATION PROCESS. APPLICATION IN ARSENIC REMOVAL FROM DRINKING WATER
Environmental Engineering and Management Journal › Vol. 16 › Nr. 4 Arsenic removal from groundwater as drinking water source was investigated using electrocoagulation (EC) process with
horizontal anodes of iron plate under galvanostatic regime. The current density of 5 A·m-2 was determined as the optimum
operating conditions at the electrolysis time of maximum 25 minutes and pH ranged between 6.5 to 8.5, by which the arsenic
concentration was reduced below 10 μg·L-1. The aspects related to the arsenic removal mechanism were discussed by Zeta... Autori: Aniela Pop ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27327
ECOLOGICAL STUDY ON NITROGEN BIOGEOCHEMICAL CYCLE AFTER CONVERSION FROM GRASSLAND TO CROPLAND IN SOUTHEASTERN EUROPE (ROMANIA)
Environmental Engineering and Management Journal › Vol. 16 › Nr. 4 Conversion of natural ecological systems has been one of the greatest human impact on terrestrial ecosystems. The expansion of anthroposphere altered virtually all biogeochemical cycles of elements. Nitrogen holds a key place in sustaining life and presents unique traits such as broad chemical speciation and mobility within the environmental compartments. With historically adapted ecosystems to low bioavailable nitrogen, understanding the complexity of the nitrogen disruption is a continuous cha... Autori: Andreea Csolti ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27329
HEAVY METALS AND GAMMA RADIOACTIVITY BIOACCUMULATIONIN Artemisia absinthium L. GROWN ON A WASTE DUMP
Environmental Engineering and Management Journal › Vol. 16 › Nr. 4 In the current context of industrialization, chemical and radioactive pollution is a concern for environmental protection and
interference with human health. Care for environmental protection also includes vegetation that grows spontaneously in
potentially contaminated places, thus avoiding illness among the population if consumed. The study area is located at 4.5km SSE from downtown Bacău City, Romania and is the result of the manufacture of H3PO4 through the wet method. In this study, t... Autori: Mioara Săndulache Rachieru ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27331
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
POSTCLOSURE INFLUENCE OF EMISSIONS RESULTED FROM MUNICIPAL WASTE DUMP SITES: A CASE STUDY OF THE NORTH-EAST REGION OF ROMANIA
Environmental Engineering and Management Journal › Vol. 16 › Nr. 4 The Strategy of Waste Management, Horizon 2014-2020, states 8 major objectives with the role of establishing new priorities for Waste Management. Thus, one of the proposed measures for the next 5 years is encouraging the wastes exploitation for energy recovery. In this context, the main goal of our study was to evaluate the level of pollution considering 5 closed municipal waste dump sites from the North-East region of Romania over the period 2013-2015, having in mind at a first glance, the poss... Autori: Brînduşa Mihaela Slușer ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27347
STUDY ON THE BEHAVIOUR OF MINE RESCUE BRIGADESMEN EXPOSED TO HIGH TEMPERATURE AND HUMIDITY IN THE TRAINING FACILITY
Environmental Engineering and Management Journal › Vol. 16 › Nr. 6 Intervention and rescue activity in special conditions may be conducted only by trained and authorized personnel using individual protective breathing equipment. While working with the insulating respiratory device, there are a number of factors that make work stressful. As a rule, those working under protection of the insulating respiratory devices, besides carrying on their back a
device weighing 14-18 kg, are also subject to great difficulty, in terms of securing their own safety, saving liv... Autori: Daniel Pupăzan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27364
HEAVY METALS REMOVAL FROM MINING DRAINAGE ACID WATER BY USE OF NATURAL ZEOLITES
Environmental Engineering and Management Journal › Vol. 16 › Nr. 6 In order to investigate the degree of pollution by heavy metals, mining water samples were subjected to analysis, using inductively coupled plasma optical spectrometry method. An experimental module was developed and the water treatment capacity of natural zeolites was studied. The contaminated water was passed through 3 columns filled with zeolites, under static
and dynamic mode in order to optimize the ion exchange process.
Experiments were performed using different particle sizes of zeolite... Autori: Andrei Szollosi-Moţa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27368
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
EFFECT OF FUEL TREATMENTS ON CROWN FIRE BEHAVIOR IN ALEPPO PINE FORESTS OF GREECE: A SIMULATION STUDY
Environmental Engineering and Management Journal › Vol. 16 › Nr. 7 This study models the potential effect of various fuel treatments on crown fire behavior by using two crown fire simulation models in Aleppo pine (Pinus halepensis Mill.) stands. Fuel complex characteristics that influence fire behavior were measured in a representative Aleppo pine stand in northern Greece, using standard surface and canopy fuel inventory methods. Nine different
fuel treatments (control, prescribed burning, controlled grazing, thinning without slash removal, thinning with slash... Autori: Ioannis D. Mitsopoulos ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27382
REMOVAL OF HEAVY METALS FROM WASTEWATER BY CHEMICALLY ACTIVATED SEWAGE SLUDGE
Environmental Engineering and Management Journal › Vol. 16 › Nr. 7 Effective adsorbents were developed from sewage sludge by chemical activation with different activators (5M ZnCl2, 3M H2SO4, 3M H3PO4, 5M ZnCl2: 3M H2SO4, and 5M ZnCl2: 3M H3PO4). The developed adsorbents were used for the removal of the heavy metals Cd (II), Pb (II), Cu (II) and Mn (II) from wastewater. The effect of several parameters (pH, initial metal ion concentration, adsorbent dose, contact time and solution temperature) on the metal adsorption capacity were evaluated by batch experiments... Autori: Mohamed Nageeb Rashed ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27385
REMOVAL OF LEAD IONS FROM INDUSTRIAL WASTEWATER USING PRECIPITATION PROCESS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 7 Chemical precipitation is an effective and relatively low cost method for removal of heavy metals. The removal of lead ions from wastewater by a precipitation process was investigated using sodium sulfide and sodium carbonate. Precipitation experiments were performed using storage battery wastewater with lead concentration of 8.8 mg/L and synthetic wastewater with different lead concentration ranging from 5 to 600 mg/L. A series of experiments (each concentration) were carried out under differen... Autori: Mehraban Sadeghi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27388
ASSESSMENT OF METAL CONTAMINATION AND ECOLOGICAL RISK IN URBAN SOILS SITUATED NEAR A METALLURGICAL COMPLEX
Environmental Engineering and Management Journal › Vol. 16 › Nr. 7 Anthropogenic activities negatively affect the ecosystems by introducing high amounts of metals in the environment. The study
assessed the contamination and ecological risk caused by As, Cd, Cr, Cu, Pb and Zn in urban soils situated near a metallurgical
complex, based on geochemical load (Igeo), contamination factor (Cfi), degree of contamination (Cd), potential ecological risk
factor (Eri) and potential ecological risk index (Ri). The results showed concentrations above the geochemical backg... Autori: Maria-Alexandra Hoaghia ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27394
CONCENTRATIONS OF CHROMIUM, CADMIUM AND NICKEL IN TWO CONSUMED FISH SPECIES OF PERSIAN GULF, IRAN
Environmental Engineering and Management Journal › Vol. 16 › Nr. 7 In this study heavy metal (Cr, Cd and Ni) levels in muscle tissues of pelagic and benthic fish species in Persian Gulf from western
and eastern sides of Bandar Abbas were determined. In western side, the mean concentrations of Cr, Cd and Ni in Aldrichetta
forsteri species were 0.57, 0.33, and 0.12 mg/kg dry weight, while in Pomadasys kaadan species were 0.08, 2.18, and 1.39 mg/kg
dry weight, respectively. In eastern side, the concentrations in Aldrichetta forsteri species were 0.26, 0.10, and... Autori: Ali Koolivand ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27396
Environmental engineering and Management Journal No. 7
› › Nr. 4 • EXPERIMENTAL INVESTIGATION OF TEMPERATURE EFFECTS ON THE PARAMETERS OF PHOTOVOLTAIC PANELS
• CONCENTRATIONS OF CHROMIUM, CADMIUM AND NICKEL IN TWO CONSUMED FISH SPECIES OF PERSIAN GULF, IRAN
• IMPROVING THE ENERGY EFFICIENCY OF RESIDENTIAL BUILDINGS BY USING A DRAIN WATER HEAT RECOVERY SYSTEM
• ASSESSMENT OF METAL CONTAMINATION AND ECOLOGICAL RISK IN URBAN SOILS SITUATED NEAR A METALLURGICAL COMPLEX
• FINANCIAL DE... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27398
Environmental engineering and Management Journal No. 7
› › Nr. 4 EXPERIMENTAL INVESTIGATION OF TEMPERATURE EFFECTS ON THE PARAMETERS OF PHOTOVOLTAIC PANELS
• CONCENTRATIONS OF CHROMIUM, CADMIUM AND NICKEL IN TWO CONSUMED FISH SPECIES OF PERSIAN GULF, IRAN
• IMPROVING THE ENERGY EFFICIENCY OF RESIDENTIAL BUILDINGS BY USING A DRAIN WATER HEAT RECOVERY SYSTEM
• ASSESSMENT OF METAL CONTAMINATION AND ECOLOGICAL RISK IN URBAN SOILS SITUATED NEAR A METALLURGICAL COMPLEX
• FINANCIAL DEVELOPME... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27399
EVALUATION OF DIFFERENT STRATEGIES FOR END-OF-LIFE LIQUID CRYSTAL DISPLAYS (LCD) MANAGEMENT
Environmental Engineering and Management Journal › Vol. 16 › Nr. 8 End-of-life liquid crystal displays (LCD) represent a potential source of secondary raw materials for their relevant content of
valuable materials, like plastics and metals. Furthermore, the combination of traditional and innovative recycling processes
allows the recovery of indium, defined as critical raw material by European Commission. In this context, we have evaluated the
environmental impacts of different management scenarios: incineration, the current recycling strategies and more inno... Autori: Alessia Amato ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27401
LIFE-CYCLE CARBON FOOTPRINT ANALYSIS OF THE PARMA HAM P.D.O. (PROTECTED DESIGNATION OF ORIGIN) ON-THE-BONE
Environmental Engineering and Management Journal › Vol. 16 › Nr. 8 The Rural Development Plan (RDP) represent the most important source of contributions and support for the agro-food sector
companies in Italy. The European Community planning tool based on a European Structural and Investment Fund (SIE) allows
the agricultural and forestry entrepreneurs to undertake projects and investments for the improvement of their companies. During
the 2014-2020 RDP program, the Emilia-Romagna region (Italy), promoted a rewarding mechanism to support those companies
car... Autori: Enrico Gerboni ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27404
EFFECT OF pH IN THE SYNTHESIS OF ORGANO-CLAYS FOR RARE EARTHS REMOVAL
Environmental Engineering and Management Journal › Vol. 16 › Nr. 8 Two montmorillonitic clays were modified with N-(methoxy-polyethylene glycol) ethylene diamine and tested as sorbents for
removal of Rare Earths (REs) from aqueous solutions. Lanthanum was chosen as representing element of REs family and
adsorption tests were performed with the aim of selecting a system with good uptake efficiency for the pollutant abatement in
wastewaters. The effects of pH were studied and the properties of the obtained final materials were evaluated with simple model
syst... Autori: Elena Maria Iannicelli-Zubiani ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27408
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
SYNTHESIS OF ALGINATE AMIDE COMPOSITE USING MICROWAVE AND ITS DYE REMOVAL ABILITY
Environmental Engineering and Management Journal › Vol. 16 › Nr. 9 In this work, magnetic alginate was synthesized by encapsulating of Nickel Zinc Ferrite nanoparticle within Ca-alginate. The
synthesized magnetic alginate was modified by ethylenediamine using microwave radiation to remove anionic dye from
wastewater. The characteristics of magnetic nanoparticle, magnetic alginate and magnetic alginate amide (MAA) were studied
using Fourier transform infrared (FTIR) and Scanning electron microscope (SEM). FTIR analysis confirmed the amidation of
alginate. Di... Autori: Niyaz Mohammad Mahmoodi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27424
EVALUATION OF COMBINED FENTON OXIDATION AND CHEMICAL PRECIPITATION PROCESS PERFORMANCE IN CYANIDE REMOVAL FROM AQUEOUS SOLUTION
Environmental Engineering and Management Journal › Vol. 16 › Nr. 9 This study was conducted to evaluate the cyanide removal efficiency by coupled process of Fenton and coagulation/precipitation
from aqueous solution. The study was performed at laboratory scale in a batch system. Variations of pH, Fenton and precipitation
reagents (molar ratios of Fe2+/H2O2 and ferric chloride), contact time and initial concentration of cyanide were investigated, and
the optimum conditions obtained from each of the Fenton and precipitation processes were followed in the coupl... Autori: Ahmad Jonidi Jafari ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27426
SYNTHETIC TEXTILE WASTEWATERS TREATMENT BY COAGULATION/FLOCCULATION USING FERRIC SALT AS COAGULANT
Environmental Engineering and Management Journal › Vol. 16 › Nr. 9 Three different synthetic textile dyeing wastewaters were treated by a chemical coagulation/flocculation process, using ferric
sulphate as coagulant. Polyacrylamide (Magnafloc 155) and polyamine (Superfloc C-573) based flocculants were applied. The
influence of pH (between 3.5 and 10.4) and Fe3+ concentration (from 15 to 4000 mg/L) in both color and dissolved organic
carbon (DOC) removal of polyester, cotton and acrylic dyeing wastewaters was assessed in the coagulation stage. As far as
floc... Autori: Carmen S.D. Rodrigues ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27427
AMOUNT AND STRUCTURE OF TREE DAMAGE WHEN USING CUT-TO-LENGTH SYSTEM
Environmental Engineering and Management Journal › Vol. 16 › Nr. 9 The research was conducted in a spruce stand with disseminated beech and larch trees from the Carpathian Mountains, where
thinning operations had taken place. The CTL (Cut-To-Length) system was applied by using harvester and forwarder. The
research was aimed at determining the amount of damage to trees, identifying the damage types, their frequency, extent, form and
distribution at the level of trees and at the level of the entire stand. Thus, 7.5 % of remaining trees were damaged with the am... Autori: Vasile Răzvan Câmpu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27434
ADSORPTION CHARACTERISTICS OF ALGINATE COMPOUNDS FOR REMOVAL OF CERIUM IONS FROM AQUEOUS SOLUTION
Environmental Engineering and Management Journal › Vol. 16 › Nr. 9 Removal of the heavy metal ions from water disposals remains a widespread problem due to their adverse influence on public
health. The most harmful materials are the products of nuclear fission called radioisotopes such as cerium ions. Cerium barely
interacts with adsorbent materials, therefore the new substances capable to bind cerium are of great interest. Ca and Na alginate
samples were incubated in Ce3+ solutions; adsorption capacity was measured and the results were evaluated using Langm... Autori: Maxim Khotimchenko ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27435
VARIATION AND ACCUMULATION OF SEDIMENTS AND ASSOCIATED HEAVY METALS ALONG CASCADE DAMS IN THE MEKONG RIVER, CHINA
Environmental Engineering and Management Journal › Vol. 16 › Nr. 9 Cascade dams alter the movement and accumulation of heavy metals in sediments along the river continuum. 27 sample crosssections
were taken in July 2011 from the Xiaowan, Manwan, and Dachaoshan dams in the middle reach of the Mekong River in
southern China and analyzed for content of heavy metal (Zn, Cr, Pb, As, Cu, Ni, and Cd) concentrations in the dammed river
reach. There were evident spatial variations of the heavy metal concentrations downstream and upstream of the three cascade
dams; t... Autori: Li Deng ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27436
PREDICTING ACID ROCK DRAINAGE FROM A NICKEL MINE WASTE PILE AND METAL LEVELS IN SURROUNDING SOILS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 9 Acid-base accounting was applied to evaluate the acid generating potential of waste rock dumps of different ages at a nickel mine
in Zimbabwe. Metal concentrations in soils surrounding the dumps were also assessed. The net neutralising potential (NNP) of
waste rock samples was derived from the maximum potential acidity (MPA) and the neutralising potential (NP). MPA and NP
were determined based on total sulphur and acid consumption respectively. Waste rock dumps (WRDs) had more (p<0.05)
su... Autori: Artwell Kanda ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27437
APPLICATION OF ARTIFICIAL NEURAL NETWORK ON MODELING OF REACTIVE BLUE 19 REMOVAL BY MODIFIED POMEGRANATE RESIDUAL
Environmental Engineering and Management Journal › Vol. 16 › Nr. 9 The Artificial Neural Network (ANN) model was used to predict dye (Reactive Blue 19) removal efficiency from aqueous
solution using modified pomegranate residual based on 124 experimental sets. Three-layer ANN models with different neurons
numbers at a hidden layer were developed. The optimum network yielded a network error of 0.0054 and 0.9606 for mean square
error and coefficient of determination, respectively. Furthermore, sensitivity analysis of the network revealed that the adsorbent
do... Autori: Elham Radaei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27439
GREY MANGROVE Avicennia marina (FORSK.) VIERH. AS A BIO-INDICATOR TO MEASURE NICKEL, MERCURY AND CADMIUM: A CASE STUDY AT PERSIAN GULF PORT SHORELINE, KHUZESTAN, IRAN
Environmental Engineering and Management Journal › Vol. 16 › Nr. 9 This study attempted to measure the amounts of nickel, mercury and cadmium in leaves of Avicenna marina and sediments at
Persian Gulf port shoreline in Iran to investigate their use as bio-indicators. Mean concentrations of Hg (0.02±0.00 mg/kg), Cd
(0.79±0.13 mg/kg) and Ni (60.81±0.00 mg/kg) in the sediments were higher when compared with values registered in leaves to
each metal (Hg: 0.01±0.00 mg/kg; Cd: 0.13±0.03 mg/kg; and Ni: 1.47±0.35 mg/kg). Reg... Autori: Javaheri Baboli Mehran ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27441
PERFORMANCE CHARACTERISTICS OF SYNTHETIC ZEOLITE F9 IN TREATING HIGH IRON AND MANGANESE ACID MINE DRAINAGE
Environmental Engineering and Management Journal › Vol. 16 › Nr. 10 The negative effects of acid mine drainage (AMD) on the natural and human environments are well understood in South Africa, yet a robust and economic AMD treatment technology has not been developed. The current study aimed at exploring the performance of synthetic zeolite F9 in AMD treatment with specific focus on iron and manganese removal. For this, batch adsorption mode was adopted for which the effects of adsorbent dosage, initial pH and temperature were investigated. As a result, it was fou... Autori: Mike Masukume ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27454
OPTIMIZATION OF OPERATIONAL CONDITIONS FOR NITRITE ACCUMULATION IN A SUBMERGED BIOFILTER
Environmental Engineering and Management Journal › Vol. 16 › Nr. 10 The partial nitrification bioreactor (PNBR) was operated at a constant temperature and an influent synthetic wastewater pH of 35°C and 8.5, respectively. The effects of dissolved oxygen concentrations (DO), hydraulic retention times (HRT), and the nitrogen loading rates (NLR) on the ammonium removal efficiencies and the NO2-N/NOx-N ratio were investigated. The activity of nitrite oxidizing bacteria was stimulated at high DO concentrations. The highest NO2-N/NOx-N ratio of 0.76 was obtained a... Autori: Sukru Aslan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27455
TREATMENT OF PULP MILL WASTEWATERS WITH Fusarium solani IN A ROTATING BIOLOGICAL CONTACTOR
Environmental Engineering and Management Journal › Vol. 16 › Nr. 10 This study assesses the feasibility of using the filamentous fungus Fusarium solani for the removal of colour, chemical oxygen demand (COD) and total phenols from a pulp mill industry effluent, inoculated in a rotating biological contactor (RBC). The study was done in a RBC of total volume 7.2 L, operated with 40% of useful volume at 37(±2)°C, inflow 3.5 L d-1, hydraulic residence time (HRT) 20 h and rotation speed 2 rpm. A Haldane model was used to determine the kinetic parameters of... Autori: Alberto Vergara-Fernández ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27456
STUDIES ON THE REMOVAL OF PHOSPHATE FROM WATER BY ELECTROCOAGULATION WITH ALUMINIUM PLATE ELECTRODES
Environmental Engineering and Management Journal › Vol. 16 › Nr. 10 In the present work, the removal of anionic phosphate from aqueous solution by electrocoagulation (EC) process using aluminium electrodes was carried out. Batch studies were carried out to investigate the influence of different operating parameters (supporting electrolyte concentration, pH, spacing between electrodes, applied voltage, electrode area, and initial concentration of phosphate) on removal of phosphate from aqueous solution. The initial value of pH was varied from 3 to 8, while the co... Autori: Sarasan Seena Mithra ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27458
ENHANCED COAGULATION FOR ALGAE REMOVAL IN A TYPICAL ALGERIA WATER TREATMENT PLANT
Environmental Engineering and Management Journal › Vol. 16 › Nr. 10 This work aims to study the physicochemical and biological parameters of Boukerdene Dam’s water and treated water at
different steps of the treatment processes in Sidi-Amar’s Station (Tipaza, Algeria) with a particular interest to the phytoplankton.
This work is also related to the demonstration of the enhanced coagulation (EC) process as an efficient method in algae and
organic matter (OM) removal from surface water by its application in jar tests. The diversity of the phytoplank... Autori: Djamel Ghernaout ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27459
COPPER(II) ADSORPTION ONTO HYDROXYAPATITE
Environmental Engineering and Management Journal › Vol. 16 › Nr. 10 In this study, the adsorption of Cu(II) ions on the uncalcined and calcined nanocrystalline hydroxyapatites was investigated. The nanohydroxyapatites were prepared by wet coprecipitation method and their physicochemical properties were investigated using XRD, BET and SEM-EDX analysis. The uncalcined and calcined hydroxyapatite samples have crystal sizes smaller than 100 nm and a specific surface area of 325 m2/g and 69 m2/g, respectively. The effects of solution pH, adsorbent dose, initial solut... Autori: Ana Maria Mateiuc ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27464
METHODS FOR HEAVY METALS (HM) EXTRACTION FROM SLUDGE SAMPLES AND THEIR USE FOR SOIL UPGRADING
Environmental Engineering and Management Journal › Vol. 16 › Nr. 11 The paper presents results obtained by analysis of some soil and wastes samples in order to establish the heavy metal (HM) content from these samples. The analyzed wastes were sewage sludge from municipal waste treatment and hydrotechnical basin sludge. These types of wastes were mixed with soil from Oltenia Sub-Carpathian area, obtaining the substrates useful for different types of plants. It was studied the migration potential of the metals from substrate to apple trees, the results being comp... Autori: Cristian Predescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27476
TREATMENT OF WASTEWATER WITH A HIGH C/N RATIO IN SEQUENCING BATCH BIOREACTOR (SBBR) CONTAINING BIOCARRIER
Environmental Engineering and Management Journal › Vol. 16 › Nr. 11 Wastewater treatment using sequencing batch reactor (SBR) has certain advantages over conventional activated sludge system. The performance of sequencing batch reactor in treating high C/N ratio was investigated with suspended polyurethane and polystyrene attached growth biomass configuration. A sequence of 4 hr HRT, 0.3 month SRT and 1kg COD/m3 was employed to study treatment efficacy. Treatment performance was assessed by means of chemical oxygen demand (COD), total nitrogen (TN) and total pho... Autori: Beenish Saba ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27478
PERFORMANCE OF MODIFIED BENTONITES FOR ADSORPTION OF PHENOL: MECHANISMS, KINETICS AND ISOTHERMS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 11 Three modified bentonites, hydroxy-aluminum pillared bentonite (Al(OH)-Bent), cetyl trimethylammonium bromide modified bentonite (CTAB-Bent), and both cetyl trimethylammonium bromide and hydroxy-aluminum modified bentonite (Al(OH)-CTAB-Bent) were prepared and characterized by Fourier transform infrared spectroscopy (FTIR) analysis. Batch experiments were conducted on the adsorption of phenol at different temperatures, pH and initial concentration. The results indicated that adsorption capacity o... Autori: Xiping Luo ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27481
PREPARATION AND SEM-EDX-XRD CHARACTERIZATION OF MAGNETIC ZEOLITIC MATERIALS OBTAINED FROM COAL FLY ASH
Environmental Engineering and Management Journal › Vol. 16 › Nr. 11 A low-cost magnetic zeolitic material was synthesized from coal fly ash by means of a new, simple method involving alkaline
hydrothermal zeolitization of fly ash (FA) followed by low-intensity wet magnetic separation. Scanning electron microscopy
with energy-dispersive X-ray analysis was applied to characterize the composition, microstructure, and morphology of the
material. The mineral and synthetic zeolite phases were identified by powder X-ray diffraction. The obtained magnetic zeolitic
m... Autori: Annie Shoumkova ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27486
EXPERIMENTAL DESIGN FOR THE OPTIMIZATION OF COPPER BIOSORPTION BY IMMOBILIZED NANOSCALE Lentinus edodes
Environmental Engineering and Management Journal › Vol. 16 › Nr. 11 An experimental design methodology was applied to study the copper removal from aqueous solutions by immobilized nanoscale
Lentinus edodes. The effect of the various variables (biomass loading, initial metal ions concentration, PH, contact time, agitation
speed and temperature) were studied in the batch experiment. The results showed that pH, contact time and agitation speed were
the most significant variables on biosorption of copper ions determined by Minimum Run Equireplicated Res V Design... Autori: Rong Chen ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27487
TREATMENT OF MUNICIPAL WASTEWATER WITH CALCIUM PHOSPHATE: A NEW PHYSICOCHEMICAL PURIFICATION STEP
Environmental Engineering and Management Journal › Vol. 16 › Nr. 11 An apatitic calcium phosphate gel (HaG) was elaborated and used to treat municipal wastewater in a physicochemical cycle prior to the standard biological degradation process. Preliminary laboratory batch experiments outlined the kinetics of heavy metal sorption by monitoring the concentrations found in filtered fractions as a function of treatment time. On site experiments were performed in a municipal wastewater treatment plant by derivation of real wastewater into an experimental tank. In this... Autori: Nathalie Lyczko ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27488
PHENOL TOLERANCE AND BIODEGRADATION OPTIMIZATION OF Serratia marcescens NSO9-1 USING PLACKETT-BURMAN AND BOX-BEHNKEN DESIGN
Environmental Engineering and Management Journal › Vol. 16 › Nr. 11 The phenol degradation capacity of Serratia marcescens NSO9-1 isolated from olive mill wastewater was evaluated and optimized in this study. Plackett-Burman design coupled with Box-Behnken methodology was used to evaluate the effects of medium components and significant parameters on phenol degradation by this relevant strain. According to Plackett-Burman-based statistical screening, seven of the eleven components of the medium had a significant effect on the metabolism of phenol degradation. Th... Autori: Nurdan Saraç ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27495
OPTIMIZATION OF IMPORTANT PROCESS PARAMETERS FOR THE REMOVAL OF Cr(VI) BY A MODIFIED WASTE MATERIAL
Environmental Engineering and Management Journal › Vol. 16 › Nr. 12 This paper highlights the utility of rice husk ash for the adsorption of Cr(VI) ions from aqueous solutions. Rice husk ash (RHA) is produced when rice husk is burnt for various purposes. Application of Treated Rice Husk Ash (TRHA) as an adsorbent for the removal of Cr(VI) from aqueous solutions has been investigated. For this purpose, RHA was thermally treated. RHA and treated RHA (TRHA) were characterized by XRD, SEM and FTIR to investigate the effect of treatment on the nature and surface char... Autori: Varsha Srivastava ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27504
REMOVAL OF MULTILAN RED AND MULTI-ACTIVE BLUE DYES FROM AQUEOUS SOLUTION BY ADSORPTION AND OXIDATION TECHNIQUES: EQUILIBRIUM, KINETICS AND THERMODYNAMIC STUDIES
Environmental Engineering and Management Journal › Vol. 16 › Nr. 12 This study evaluated the performances of adsorption and Fenton oxidation for the removal of multilan red (MLR) and multi-active blue (MActB) dyes from aqueous solution. Zeolite, the adsorbent used in the study was modified using two surfactants: hexadecyltrimethylammonium bromide (HDTMA-Br) and cetyltrimethylammonium bromide (CTAB). The modified zeolite characterized using FTIR, SEM and XRD analysis. The modification studies revealed that HDTMA-modified zeolite exhibited better performance than ... Autori: Jacob Kitinya ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27505
INFLUENCE OF PROCESS VARIABLES ON ADSORPTION OF CONGO RED ONTO MANGO LEAF CHAR USING FACTORIAL DESIGN ANALYSIS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 12 Influence of process variables like pH, adsorbent dosage (D), initial dye concentration (C0), particle size (S) and temperature (T) on adsorption of a direct dye on carbon derived from mango leaf were studied using a 25 factorial design. The main effects and interaction effects were determined using statistical methods. Maximum uptake obtained was 55.7 mg/g (pH = 2, T = 40 °C, D = 0.5 g/dm³, C0= 100 mg/dm³ and S = 53 μm). It was found that the effects of process variables namely... Autori: Varadarajan Gunasekar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27506
APPLICATION OF FLY ASH-STABILIZED MUNICIPAL SEWAGE SLUDGE ON GROWTH OF Brassica chinensis AND HEAVY METAL TRANSFER IN POT EXPERIMENT WITH A BARREN SOIL
Environmental Engineering and Management Journal › Vol. 16 › Nr. 12 Pot experiments were performed with a barren soil amended with fly ash stabilized municipal sewage sludge to cultivate Brassica chinensis. Accumulation and transformation of heavy metals in the tested soil-plant system were investigated. The results showed that appropriate application of fly ash-sludge mixture could improve the growth of Brassica chinensis. The plants cultivated in F30 treatment, which contained 14% (volumetric) sludge and 6% (volumetric) fly ash, presented the highest yield and... Autori: Ruilian Yu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27511
EFFECT OF INFLUENT C/N AND C/P RATIOS ON NUTRIENTS REMOVAL INVESTIGATED VIA CHEMICAL AND MICROBIAL ANALYSES IN A NOVEL BNR-IC PROCESS
Environmental Engineering and Management Journal › Vol. 17 › Nr. 1 This work describes the variations in nitrogen (N) and phosphorus (P) removal performances and bacterial population dynamics in response to different influent C/N and C/P ratios in a novel BNR-IC process combining biological nutrients removal (BNR) with induced crystallization (IC). A good nutrients removal performance was achieved at 7.8 of C/N ratio and 23.3 of C/P ratio, where P and TN removal efficiencies were 94.0±2.4% and 90.5±4.3%, respectively. Moreover, significant changes... Autori: Haiming Zou ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27523
INCREASING ROLE OF MICROORGANISM WITH UBIQUINONE-9 IN DENITRIFYING PAO SLUDGE
Environmental Engineering and Management Journal › Vol. 17 › Nr. 1 An anaerobic-aerobic (An-Ox) sequencing batch reactor (SBR) was operated for the growth of phosphate accumulating organisms (PAOs), while an anaerobic-anoxic (An-Ax) SBR was used for the growth of denitrifying PAOs (dPAOs). Both
reactors exhibited successful enhanced biological phosphorous removal (EBPR) performance. The sludge P contents in the two reactors increased from approximately 2% at the beginning of the operation to 9.1% (An-Ox SBR) and 7.3% (An-Ax SBR) after 140 d. The results of the... Autori: Hansaem Lee ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27525
REMOVAL OF DYES FROM WATER BY GALVANOCOAGULATION
Environmental Engineering and Management Journal › Vol. 17 › Nr. 1 Galvanocoagulation (GC) utilizing metallic iron chips and granular coke was studied as a potential technique for decolorization of dye-containing aqueous solutions. GC and chemical coagulation by inorganic metallic coagulants such as iron sulfates (Fe2+, Fe3+) were examined for the removal of individual dyes, used in the fur industry, from model aqueous solutions. The role of metal cations when progressively electrogenerated in situ was compared to when they are added simultaneously. The superio... Autori: Marina R. Sizykh ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27526
EVALUATION OF COPPER AND LEAD BIOSORPTION ON MODIFIED Azolla pinnata (R. Br.)
Environmental Engineering and Management Journal › Vol. 17 › Nr. 1 This paper investigates the macrophyte Azolla pinnata modified with sodium hydroxide, as a bioadsorbent for Cu2+ and Pb2+ ions in synthetic solutions. Biomaterial characterization was performed using Scanning Electronic Microscopy (SEM); Energy-
Dispersive X-Ray Spectroscopy (EDX); Fourier Transform Infra-red (FTIR) spectroscopy techniques and through the blocking of carboxylic and sulfonic functional groups. Kinetics of the process has highlighted a quick and efficient adsorption, even in low ... Autori: Arielle Barros ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27532
MASS TRANSFER MODEL OF SOIL VAPOR EXTRACTION UNDER THERMAL TREATMENT FOR REMOVING A VOLATILE CONTAMINANT
Environmental Engineering and Management Journal › Vol. 17 › Nr. 1 A series of column experiments were conducted to study volatile contaminant (benzene) removal and process principles using soil vapor extraction (SVE) under different thermal conditions. Compared with the normal SVE method, two thermal methodssteam injection and electrical resistance heating effectively increased the benzene vapor diffusion and removal rates. The removal efficiency of benzene with the electrical resistance heating method was 96.5%, which was significantly higher than that with t... Autori: Peng Li ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27534
ADSORPTION CHARACTERISTICS OF Cr(VI) ON CARBONIZED Eupatorium adenophorum SPRENG
Environmental Engineering and Management Journal › Vol. 17 › Nr. 1 The potential use of a novel low-cost adsorbent, Eupatorium adenophorum Spreng, as a solution to remove Cr(VI) ions from aqueous was reported. Effects of various regulating parameters, such as pH value of reaction, adsorbent dosage and temperature, were investigated. To fit the adsorption equilibrium data, Langmuir isotherm and Freundlich isotherm were invoked. Additionally, thermodynamic parameters of the adsorption process, such as ΔG, ΔS and ΔH, were also calculated. The res... Autori: Chen Jin-fa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27535
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
CASTOR LEAF POWDER AS A BIOSORBENT FOR Cu(II) REMOVAL AND PRECONCENTRATION OF NATURAL WATER SAMPLES
Environmental Engineering and Management Journal › Vol. 17 › Nr. 1 This paper describes the preparation and use of a low cost biosorbent made of castor leaves for the extraction of Cu(II) from an
aqueous medium. The biosorbent was characterized by Fourier transform infrared spectroscopy (FTIR), surface area and pore
diameter measurements. The results showed absorption bands of carboxylic and amide groups at 1738 and 1540 cm-1,
respectively, and the measured surface area was 1.3728 ± 0.0160 m2 g-1, with predominance of microporous < 10.51 Å.
... Autori: Milene S. Pereira ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27540
HRT EFFECT ON SIMULTANEOUS COD, AMMONIA AND MANGANESE REMOVAL FROM DRINKING WATER TREATMENT SYSTEM USING A BIOLOGICAL AERATED FILTER (BAF)
Environmental Engineering and Management Journal › Vol. 17 › Nr. 1 Three different hydraulic retention times (HRTs) were investigated for NH4+-N and Mn2+ removal using an upflow biological aerated system (BAF) as a new approach in drinking water treatment system. Currently in Malaysia, there is no specific treatment for NH4+-N and Mn2+ in drinking water treatment plant. BAF is a well known system in biological treatment for wastewater but not for drinking water treatment. This study showed that at 24 hours operation of BAF system, about 91.3% of COD, 94.4% of N... Autori: Hassimi Abu Hasan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27543
EFFECT OF METAL TOLERANT PLANT GROWTH PROMOTING RHIZOBACTERIA ON BEAN GROWTH, CADMIUM AND ZINC UPTAKE AND STRESS RESPONSES
Environmental Engineering and Management Journal › Vol. 17 › Nr. 4 Plant growth promoting rhizobacteria (PGPR) serve as an alternative tool in sustainable agriculture. PGPR influence the heavy metal accumulation of crops in contaminated soils, either by decreasing or increasing the accumulation. This study focuses on the effect of plant growth-promoting rhizobacteria on the heavy metal uptake, plant growth and stress response of bean plants. The simultaneous treatment of Cd2+ and Mitsuaria chitosanitabida T310-2/4 (PGPR strain) as well as Zn2+ and bacteria resu... Autori: Éva Boglárka Vincze ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27554
EFFECTIVENESS FACTOR APPROACH FOR CHEMICAL ABSORPTION PROCESS Environmental Engineering and Management Journal › Vol. 17 › Nr. 4 Absorption of gases into liquids, with chemical reaction, is an important unit operation useful in many fields, especially synthesis of new products and waste gas treatment. Gas treatment means the separation of pollutants: acid gases, organic sulphur compounds, and other contaminants which may be found in gaseous streams. The absorption into liquid is a process almost exclusively used for removal of contaminants. The removal refers to retention of the majority of acid gases present in high conc... Autori: Maria Harja ISSN: 1 |