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Rezultatele pentru biomassRezultate gasite: 117
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 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
Sustainable combined utilization of renewable forest resources and coal in Romania
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 AbstractAs answer to European Community politics, in Romania the researches for waste reworking and ecological treatment are developing. The researches are focusing on wood wastes for its recovery in energy purposes. The purpose is the enlargement of superior coal utilization area obtained from Jiu Valley coal field, for increasing the efficiency of heating installations for domestic consumption, concordantly to European and Romanian pollutions regulations.Combined utilization of the fuel compos... Autori: Camelia Bădulescu, Eugen Traistă, Gheorghe Lăzăroiu, Maria Orban, Valeriu Plesea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25267
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
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
Biomass power for energy and sustainable development
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 AbstractThe paper discusses some aspects concerning the utilization of biomass as a bioenergy resource worldwide and in Romania, since biomass is considered a sustainable, potentially environmentally sound and a replenishable resource. The biomass categories for bioenergy are analyzed, considering the factors which influence its availability. Biomass energy potential and current use in different regions as well as in Europe is accounted. Also, biomass power as an important alternative for ... Autori: Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25298
Opportunities and barriers for development of biogas technologies in Romania
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 AbstractThe development of technologies for waste treatment, simultaneously with minimizing greenhouse gas emissions, has become a matter of great concern at global level. Biogas systems can help in the fight against global warming by avoiding to escape methane from organic waste, into the atmosphere. Biogas technology is of great benefit to the end-users and the environment by energy, compost and nutrient recovery. Romania is a country with a huge biomass potential. Implementing of biogas techn... Autori: , Corina Alice Babutanu, Gheorghe Băran ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25300
Combustion of pitcoal-wood biomass brichettes in a boiler test facility
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 AbstractThe use of composite fuels using pitcoal and sawdust represents a high perspective. The paper deals with the experimental results focusing on the combustion efficiency of composite fuel briquettes and on the polluting emissions level. A special care is given to the determination of boiler efficiency and to the establishment of exploiting economic conditions, like the supply, cleaning etc. The research of the combustion of pitcoal-wood biomass briquettes is conducted on a 55 kW boiler.A n... Autori: Gabriel Negreanu, Gheorghe Lăzăroiu, Ion Oprea, Ionel Pisa, Lucian Mihăescu, Radu Indries, Tudor Prisecaru ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25301
Microbial cellulose as support material for the immobilization of denitrifying bacteria
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 AbstractThe purpose of this study was to investigate the immobilization of denitrifying bacteria on microbial cellulose (MC) for biological denitrification. A novel denitrifying bacterium, Pseudomonas stutzeri, was immobilized in microbial cellulose and introduced into an up flow packed bed reactor in order to remove nitrate from synthetic influent. The MC presented the high biomass concentration throughout the experiment, achieving 3.4 mg biomass/g support. The efficiency of the system for deni... Autori: Abbas Rezaee, Hatam Godini, Hossein Bakhtou ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25302
Integration of biorefinery clusters towards zero emissions
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 AbstractDepletion of world recourses, increasing pollution, and climate change make us shift from linear economy to system economy - an economy of technologies integrated to reach a non-polluting zero emissions production system. Transition to renewable resources requires replacement the present crude oil refinery by biomass refinery. Along with conventional biomass refinery technologies bioengineering and nano-technologies become significant players of systems in the design of clusters of integ... Autori: Arnis Kokorevics, Janis Abolins, Janis Gravitis ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25304
Biomass - an important renewable source of energy in Romania
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 AbstractAt the beginning of 3rd century the humankind finds at a crossroads. Daily, people assist at miracles, live in a time of change, both in economical and rational areas. Energy demand is expected to increase steadily over the next couple of decades, as income levels and economic output expand, especially in the new democratic states after ’90th.Renewable energy resources represent a new opportunity in Romania, with less participation in the market than those forums outside of the country... Autori: Camelia Ciubota-Rosie, Maria Gavrilescu, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25305
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
Energy from biomass in pulp and paper mills
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 AbstractPulp and paper mills generate various quantities of energy-rich biomass as wastes, depending on technological level, pulp and paper grades and wood quality. These wastes are produced in all stages of the process: wood preparation, pulp and paper manufacture, chemical recovery, recycled paper processing, waste water treatment. Energy recovery from wastes of different origin has become a generally accepted alternative to their disposal. Pulp and paper industry expresses an interest in adap... Autori: Dan Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25307
Wood-based epoxy resins and the ramie fiber reinforced composites
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 AbstractWood-based epoxy resin was synthesized from resorcinol-liquefied wood. First, wood components were depolymerized and liquefied by reaction with resorcinol. The resorcinol-liquefied wood with plenty of hydroxyl groups could be considered as a precursor for synthesizing wood-based epoxy resin. Namely, the phenolic-OH groups of the liquefied wood reacted with epichlorohydrine under alkali condition. By the glycidyl etherification, epoxy functionality was introduced to the liquefied wood. Th... Autori: Akira Fujita, Hajime Kishi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25310
Biomass - A source of chemicals and energy for sustainable development
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 AbstractNowadays, energetic utilization of biomass, biotechnology attracts a big attention not only from the environmental point of view but also have a social, political and economical impact. According to the Directive 2003/30/EC of the European Parliament and the European Council the emission of greenhouse gases can be reduced by 49% using bioethanol produced by a manufacturing process based on corn, instead of crude oil based fuels. Moreover in Hungary from 1st of July 2007 only gasoline wit... Autori: , , Gyula Marton, , Jenő Hancsók, Tatiana Yuzhakova ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25312
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
Analysis of distribution of oxygen transfer rate in stirred bioreactors for bacterial broths
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractThe study on the distribution of oxygen transfer rate in a stirred bioreactor for Propionibacterium shermanii broths underlined the major influence of the presence and concentration of biomass on the interphasic transfer of oxygen. Owing to the bubbles surface blockage by the bacterial cells, the accumulation of biomass from 30.5 to 120.5 g/l d.w. led to the decreasing of kla for about 1.3- 2.4 times. Compared with the simulated broths without biomass having similar apparent viscosity, t... Autori: Adina Segneanu, Anca-Irina Galaction, Dan Caşcaval ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25364
Environmental Engineering and Management Journal, Vol. 8 Nr. 4
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 â€? Photocatalytic properties of titania - fly ash thin filmsâ€? Study of the viscosity of some biodiesel – diesel oil blendsâ€? Aspects refering to technical and leaching properties of the secondary aluminium slags - cement compositesâ€? Studies regarding phenol and 4-chlorophenol sorption by surfactant modified zeolitesâ€? Cu-Ni nanostructured electrocatalysts obtained by electrocodepositionâ€? Molecularly imprinted poly (vinyl alcohol) films for the selective absorption of glycyrrhizinic ac... Autori: http://www.ecozone.ro/reviste.php?RID=25373
Environmental Engineering and Management Journal, Vol. 8 Nr. 5
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 â€? Photocatalytic properties of titania - fly ash thin filmsâ€? Study of the viscosity of some biodiesel – diesel oil blendsâ€? Aspects refering to technical and leaching properties of the secondary aluminium slags - cement compositesâ€? Studies regarding phenol and 4-chlorophenol sorption by surfactant modified zeolitesâ€? Cu-Ni nanostructured electrocatalysts obtained by electrocodepositionâ€? Molecularly imprinted poly (vinyl alcohol) films for the selective absorption of glycyrrhizinic ac... Autori: http://www.ecozone.ro/reviste.php?RID=25374
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
Treatment and management of distillery fermentedfruit spent marc. I. Processing into compacted solid fuel
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 AbstractThe study presents the processing possibilities for marc resulted as still residue from the distillation of fermented fruits in view to obtain a compacted solid fuel. Initial marc composition (carbon, hydrogen, nitrogen, sulphur and oxygen contents) determined by elemental analysis is evidenced, as well as technical characterisation (ash and moisture contents) and ash's qualitative composition, chemical characterisation of the liquid phase (pH, total phosphorus, acidity and conductivity)... Autori: Daniela Simina Stefan, Anca-Ileana Penu, Mircea Stefan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25391
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
Microwaves effect over biomass hydrolysis
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Changing fuel consumption to a more ecological environmentally alternative is replacing fossil fuels with fuels generated from renewable resources. Ethanol, a renewable fuel, can be produced mainly from crops, lignocellulosic biomass and different other environmental wastes. Although ethanol has been produced mainly from crops, there is a great interest in using cheaper lignocellulosic materials as a feedstock for ethanol production.
The aim of this paper is study of dilute acid hyd... Autori: Ionel Balcu, Adina-Elena Segneanu, Marius Constantin Mirica, Mirela Ioana Iorga, Corina Macarie, Raluca Martagiu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25481
Density of ecological wooden briquettes obtained from woody biomass
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The paper proposes itself to present some aspects about woody biomass as renewable source of energy and about one of the main product namely wooden briquettes. There will be put the accent on physical features of wooden briquettes namely its density but there has be not forgotten the ecological influences. It is also stated the conditions of experimental, type of machine that is used in laboratory experiments, type and feature of raw material and wooden briquettes. Finally some condi... Autori: Aurel Lunguleasa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25491
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
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
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
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
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
Researches on the negative effects assessment (slugging, clogging, ash deposits) developed at the biomass-coal co-firing
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
Using biomass in combustion, as a renewable source of energy, from ecological and economic considerations, sets special demands for control of the co-firing process. The paper aimed to study the problems like slugging, clogging and ash deposits formed on heat exchange surfaces during the co-firing process of agricultural biomass with coal. There are identifies the main factors that influence the formation of flying ash deposits and corrosion process. Most problems of co-firing proces... Autori: Corina Rădulescu, Danut Vairenu, Elena Popa, Gheorghe Lazaroiu, Ionel Pisa, Lucian Mihăescu, Simona Zamfir, Tudor Prisecaru ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25600
Analysis of distribution of oxygen transfer rate in stirred bioreactors for fungus broths 1. Suspensions of P. Chrysogenum free mycelia
Environmental Engineering and Management Journal › Vol. 9 › Nr. 2 Abstract
Unlike the P. shermanii and S. cerevisiae cultures, the study on the distribution of oxygen transfer in stirred bioreactor for P. chrysogenum free mycelia broths indicated that this process is controlled mainly by the high apparent viscosity of broths, and less by the presence of fungus biomass. For this reason, the influence of fungus accumulation on the reduction of kla is attenuated compared with that obtained for bacterial or yeasts broths. The lower influence of fungus biomass i... Autori: Anca-Irina Galaction, Dan Caşcaval, Marius Turnea, Stefanica Camarut ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25606
Studies on the biosorption of Terasil dye by Aspergillus Niger dead biomass
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
Textile dyeing process is an important source of contamination responsable for the continous pollution of the environment. Control of water pollution has importance for both organisms, which live in water and those who benefit from water. Many dyes reaching the water source are difficult to decompose and cause many problems due to their carcinogenicity. Consequently, it is important to remove these pollutants from wastewater before their final disposal. This paper reports the resuls ... Autori: Alina Dughila, Alina Stefanache, Cornel Pohontu, Igor Creţescu, Mariana Diaconu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25633
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
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
EXERGY ANALYSIS OF HYDROGEN PRODUCTION VIA BIOMASS STEAM GASIFICATION AND PARTIAL OXIDATION
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 Hydrogen production via biomass steam gasification and partial oxidation is analyzed from exergy aspect. Based on cypress sawdust gasified from 800°C to 1200°C, the exergy value of H2 from steam gasification rises from 1410.80 kJ kg-1 to 7922.89 kJ kg-1, while that from partial oxidation increases from 988.30 kJ kg-1 to 3097.81 kJ kg-1. The exergy efficiency of H2 from biomass also increases for both steam gasification (6.42–36.08%) and partial oxidation (4.50–14.11%). However, the exergy ... Autori: Yaning Zhang, Bingxi Li, Hongtao Li, Bo Zhang, Hui Liuhttp://www.ecozone.ro/reviste.php?RID=25693
CULTIVATION OF Chlorella sp. IN ANAEROBIC EFFLUENT FOR BIOMASS PRODUCTION
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 This study investigated the effectiveness of using anaerobic effluent as a nutrient supplement for cultivation of green algae Chlorella sp. Different concentration of 0%, 15%, 30%, 45%, 60%, 75%, 90% and 100% which were raw (group â€?râ€?) as well as autoclaved (group â€?aâ€?) were applied to the anaerobic effluent and algae growth. They were compared in terms of growth rate and final algae biomass production. In the initial cultivation days, slower growth rates with an increased anaerobic efflu... Autori: Yubi Chen, Renjie Dong, Gaojun Peng, Zhu Yi, Shuhao Huo, Yupeng Liu, Changle Panghttp://www.ecozone.ro/reviste.php?RID=25701
TECHNOLOGICAL POTENTIAL OF REED AS BIOMASS FOR BRIQUETTING
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:In this paper the study on the possibilities of converting chopped reed stalk biomass into briquettes is described, in the conditions of harvesting water reed plant from Danube Delta region in winter time and based on briquetting technology used for wood waste from production. The water reed tested in the research has been harvested from Tulcea reed bed, one of the largest in Romania, chopped in a veneer drum chipper and compacted into the hydraulic briquette machine. The paper focuses ... Autori: Aurel Lunguleasa, Camelia Coşereanu, Constantin - Radu Gheorghiu, Dumitru Lica, Gavril Budău ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25734
STUDY ON ENERGY RESOURCES INTEGRATION AND SUSTAINABILITY OF THE NEW MODULAR AGRICULTURE PATTERN
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:The paper aims to present the new pattern of modular agriculture, as evolution of agri-food production in the coming decades aswell as to highlight the direct relation between this pattern and the massive energy support it requires.The paper basically deals with reactions to climate change, reductions of carbon emission, in addition to high quality and safetyrequirements for food production. The author envisages the PAC measures called for in order to ensure a sustainable developmentof ... Autori: Romulus Gruia ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25746
PARAMETERS EFFECT ON THE PRODUCT DISTRIBUTION IN THE BIOMASS TO FISCHER-TROPSCH FUELS PROCESS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:The increasing of energy consumption and fossil fuel emissions (especially CO2, SO2 and NOx) and the limitation of crude oilreserves, determined a growing trend toward renewable energy technologies, like solar, wind, geo-thermal energy and biomass forbiofuels.From all the renewable energies sources, biomass attracts more and more interest being a renewable resource with economicpotential, which can be found all over the world, with positive environmental properties due to neutral emissi... Autori: Anca Sauciuc, Angela Potetz, Georg Schlaub, Gerald Weber, Hermann Hofbauer, Lucia Dumitrescu, Reinhard Rauch, Ziad Abosteif ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25762
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
EXTENSION OF ACTIVATED SLUDGE MODEL NO 1 WITH TWO-STEP NITRIFICATION AND DENITRIFICATION PROCESSES FOR OPERATION IMPROVEMENT
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:The present paper presents an enhanced Activated Sludge Model No. 1 in which nitrification and denitrification are modelled astwo-step processes. The nitrification process is considered as a sequence of two steps carried out by two distinct genera ofbacteria, with nitrite as an intermediate product. For the denitrification process a parallel approach was used that considers nitrateand nitrite to be directly reduced to molecular nitrogen. The new model is compared to the original Activat... Autori: George Simion Ostace, Paul Şerban Agachi, Vasile Mircea Cristea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25786
IMMOBILIZATION OF CONIDIOBOLUS CORONATUS ALKALINE PROTEASE ON WASTE FUNGAL BIOMASS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:Alkaline protease from Conidiobolus coronatus which is optimally active at pH 10 and 40°C finds application in leather and detergent industries as well as for recovery of silver from waste photographic films. The protease was immobilized in Ca-alginate, polyacrylamide gel and alkali treated waste fungal biomass (ATWFB). ATWFB was found to be most suitable among the matrices tested. Glutaraldehyde marginally increased the binding to ATWFB. Binding of protease to ATWFB seems to be through... Autori: Ryali Seeta Laxman, Shiv Shankar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25807
LEAD (II) BIOSORPTION BY A METAL TOLERANT STREPTOMYCES STRAIN
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:The aim of the present study is the optimization of biosorption conditions using a metal tolerant actinomycete (strain 723) for the removal of lead ions from waste water in batch and dynamic flow mode. The optimum conditions for lead biosorption by the strain were determined as initial pH 3.0, biomass amount 2.0 g L-1, and initial metal concentration 400 mg L-1 in the batch condition. The maximum lead biosorption performance was obtained with a 19 mm diameter column, a 1 mL min-1 flow r... Autori: Ayşe Betül Karaduman, Maria Julia Amoroso, Mustafa Yamaç, Sergio Antonio Cuozzo, Zerrin Pat ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25811
LIGNOCELLULOSIC BIOREFINERY
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 Biomass is a very interesting natural source to obtain renewable energy as well as chemical products based on a renewable feedstock. Fuel produced from renewable resources is widely regarded as an option to substitute traditional fossil fuels and thus to answer to the adjunct climate debate. For the production of chemical substances from renewable substrates many process options are in investigation worldwide at the moment. However the ecological benefits of these technological options have to b... Autori: Anton Friedl ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25856
EVALUATION OF DIFFERENT CONTROL STRATEGIES OF THE WASTE WATER TREATMENT PLANT BASED ON A MODIFIED ACTIVATED SLUDGE MODEL NO. 3
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 The first part of this work presents the development and implementation in the Benchmark Simulation Model No 1 (BSM1) of a modified Activated Sludge Model No 3 (ASM3). The enhanced ASM3 presented in this study has three modifications compared to the original ASM3. The first modification is the representation of the simultaneous heterotrophic biomass growth on the primary substrate and on the internal storage products. Second, nitrification is modeled as a two-step process with nitrite as an inte... Autori: George Simion Ostace, Paul Şerban Agachi, Vasile Mircea Cristea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25865
COMPARISON OF COMBINED ETHANOL AND BIOGAS POLYGENERATION FACILITIES USING EXERGY ANALYSIS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 8 AbstractIn this paper, the background of bioethanol as an alternative fuel to conventional one is analyzed with the aim of examining theefficiency of biomass-to-fuel conversion by poly-generation taking into account the energy integration approach for a completerecovery of the process’ exergy potential.Based on literature data it is underlined that exergy analysis represents a primary tool to analyze the ethanol production processfrom an integrated point of view.... Autori: Anton Friedl, Maria Gavrilescu, Petronela Cozma ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25974
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 ZnSO4·7H2O 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
INCREASING ENERGY EFFICIENCY OF WASTEWATER TREATMENT PLANTS BY UPGRADING THE CONVENTIONAL TREATMENT PROCESS WITH NEREDA TECHNOLOGY
Environmental Engineering and Management Journal › Vol. 12 › Nr. 4 AbstractGranular sludge technology – NEREDA is one of the most significant achievements in environmental biotechnology of the XXIstcentury. NEREDA is the latest innovative technology for biological wastewater treatment, which purifies water using the uniquecharacteristics of aerobic granular biomass. Unlike conventional processes, bacteria of the biological process naturally focus incompact granules with good settling properties.Due to the variety of biological processes that occur simultaneousl... Autori: Ilinca Dinu, Ioan Crăciun, Teodora-Manuela Cornea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26053
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
SECOND GENERATION BIOFUELS AND BIOMASS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 Mother Earth Investments AG, is actively working onthe development 2nd generation bioenergy feedstocks.In this book, Mr. Jansen generously shares hisknowledge in the field, in particular, regarding thechallenges and opportunities in development ofbiomass-derived fuels. This essential guide toinvesting in bioenergy commodities details secondgeneration biofuels from a scientific, technical andeconomic perspective, and discusses their globalenvironmental, political and financial impact.The book is ... Autori: Roland A. Jansen ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26100
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
STUDY OF TROPOSPHERIC AEROSOL TYPES OVER IASI, ROMANIA, DURING SUMMER OF 2012
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
This research has been performed during summer time at Iasi Atmosphere Optics, Spectroscopy and Lasers Laboratory site
(LOA-SL), aerosol monitoring station (47.19N, 27.55E). In order to properly identify and characterize the aerosol types, Aerosol
Robotic Network (AERONET) data and sun-photometer measurements were analysed using parameters such as: optical
thickness, spectral dependence of Ĺngström exponent (α), spectral dependence of Single Scattering Albedo and the ... Autori: Florin Unga ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26116
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
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
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
TECHNO-ECONOMICAL EVALUATION OF POST- AND PRE- COMBUSTION CARBON DIOXIDE CAPTURE METHODS APPLIED FOR AN IGCC POWER GENERATION PLANT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractGlobal warming is happening due to increasing level of carbon dioxide and other greenhouse gases into the atmosphere. In orderto reduce this rising level of CO2 emitted by human activities, carbon capture and storage technologies are being developed.The present paper investigates and compares, from a techno-economical point of view, two of the most used conceptual methods(post- and pre- combustion) for CO2 capture generated from the fossil fuel power generation sector. For post-combustio... Autori: Anamaria Padurean ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26217
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 Box–Behnken 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
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
BIODEGRADATION OF PHENOLIC WASTEWATERS BY CALCIUM ALGINATE IMMOBILIZED Aeromonas SPECIES
Environmental Engineering and Management Journal › Vol. 13 › Nr. 1 AbstractIndigenous isolated bacterium Aeromonas sp. was immobilized in calcium alginate and the related immobilization parameterslike bead diameter, inoculum size and the initial phenol concentration required for biodegradation were determined. Thebiodegradation activity was most efficient with 4 mm calcium alginate beads. The optimal immobilized biomass required wasabout 28 109 cells/mL. Compared with free-cell suspensions, the alginate matrix used for immobilization of cells provided betterenv... Autori: Abdelkader Namane ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26249
AN APPROACH ON ATTACHED GROWTH PROCESS FOR DOMESTIC WASTEWATER TREATMENT
Environmental Engineering and Management Journal › Vol. 13 › Nr. 1 AbstractThe applications of biofilm treatment technologies for domestic wastewater are being increased in many parts of the world. Theaim of the study is to assess a compacted aerobic attached growth fix-film unit (termed Bio-cache) for treatment of small volumedomestic wastewater. The system consists of the miniature plastic packing matrix, which provides a large surface area of 300m2/m3, so as to maintain the high rate growth of viable organisms responsible for organic degradation. The study o... Autori: Alireza Valipour ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26266
MECHANISM OF Cr(VI) BIOACCUMULATION BY Phanerochaete chrysosporium
Environmental Engineering and Management Journal › Vol. 13 › Nr. 2 AbstractThe aim of the present study was to investigate the mechanism of Cr(VI) bioaccumulation by livingand active Phanerochaete chrysosporium. Fungal growth was inhibited beyond 10 mg L-1 Cr(VI) concentration thereby reducing the chromium bioaccumulation capacity. The optimum pH was found to be 6 for the growth and bioaccumulation of Cr(VI) by P. chrysosporium. Bioaccumulation efficiency decreased from 81.47% to 23.82% when Cr(VI) concentration was increased from 10 to 40 mg L-1. A Fourier tra... Autori: Kaustubha Mohanty, Somasundaram Murugavelh ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26280
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
BIOSORPTION OF CADMIUM (II) FROM AQUEOUS SOLUTION BY NaCl-TREATED Ceratophyllum demersum
Environmental Engineering and Management Journal › Vol. 13 › Nr. 4 AbstractThe biosorption characteristics of Cd(II) ions using the NaCl-treated Ceratophyllum demersum were studied. The effect ofaltering the conditions, such as solution pH, the biosorbent dosage and contact time for the biosorption of Cd(II), and thebiosorption/desorption studies, were investigated. Langmuir, Freundlich, Dubinin-Radushkevich and Redlich–Peterson modelswere applied to describe the biosorption isotherms. Langmuir model fitted the equilibrium data better than the other isotherms(R... Autori: Ali Akbar Babaei, Mehdi Ahmadi, Nadali Alavi, Nemat Jaafarzadeh, Pari Teymouri ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26331
MONITORING ALGAL BLOOM THROUGH RELATIONSHIPS BETWEEN CHLOROPHYLL α AND PHYTOPLANKTON
Environmental Engineering and Management Journal › Vol. 13 › Nr. 4 AbstractAlgal blooms in reservoirs used for both fish and drinking water production are a major water quality problem. The authorsassessed data gathered from both published literature and from their own field enclosure experiments to analyze the relationshipsof phytoplankton chlorophyll α concentrations with biomass and algal cell count. Experimental data were collected from indoorlocations, field enclosures, and natural water bodies. Under laboratory conditions, where the types of algae an... Autori: Chang-juan Zang, Chao Lin, Feng Gao, Hong-chuan Pan, Miklas Scholz, Min Wu, Sheng-lan Du, Sui-liang Huang, Yong Guo ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26335
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
MODELING HEAD LOSSES IN BIOLOGICAL AERATED FILTERS INCLUDING ACTIVE BIOMASS, INERT BIOMASS AND EXTRACELLULAR POLYMERIC SUBSTANCES
Environmental Engineering and Management Journal › Vol. 13 › Nr. 4 AbstractA deep understanding of the relationship between the solids deposition and head losses is vital to optimize the backwashing inbiological aerated filters (BAFs). In this article, the deposition solids were classified into four types: heterotrophic biomass,autotrophic biomass, inert biomass and extracellular polymeric substances (EPS). A concept model was developed to simulatethe solid deposition and the head loss development. The temporal and spatial distributions of the four types of sol... Autori: Chengda He, Dongsu Bi, Jun Wu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26347
NEW VIABLE INDUSTRIAL WASTES MIX FOR FODDER YEASTS PRODUCTION
Environmental Engineering and Management Journal › Vol. 13 › Nr. 7 AbstractThe study aimed the diversification of fodder yeast assortments with viable economic effects while reducing the environmentpollution by capitalization of wastewaters with high monosaccharides content from pulp and paper industry and residual wheyfrom milk industry. Using the Response Surface Methodology the fabrication recipe has been optimized according to anexperimental program based on a mathematical model with biomass, protein and residual sugar as response functions. Theculture medi... Autori: Livia Manea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26429
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
TOOLS FOR ASSESSING DANUBE DELTA SYSTEMS WITH MACRO INVERTEBRATES
Environmental Engineering and Management Journal › Vol. 13 › Nr. 9 AbstractThis study, analyzes the benthic macroinvertebrates community structure and composition in order to assess the ecological statusas required by the Water Framework Directive (WFD). Macroinvertebrates are the appropriate indicators to describe habitatheterogenity and the water bodies ecological status by turning the allochtone material into biomass, which is then transferred tothe upper trophic levels. Moreover, the macroinvertebrates have the capacity to integrate in their structure the e... Autori: Catalina Stoica ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26502
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
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
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
EFFECTS OF CADMIUM AND ZINC ON GROWTH AND METAL ACCUMULATION OF Mathiola flavida BOISS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 12 Abstract
The effects of cadmium (Cd), Zinc (Zn), and Cd–Zn on growth and their accumulation in the Matthiola flavida shoots were
investigated. A factorial experiment with two factors (Cd and Zn) concerning four concentrations of Cd (0, 5, 10 and 20 mg L-1)
and four Zn concentrations (0, 10, 20 and 40 mg L-1) were carried out. The shoot and root biomass of M. flavida growing in Cd-
Zn medium decreased significantly (p<0.01) compared to the control. Growing in the presence of 20 mg L-... Autori: Naser Jamali ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26587
OPTIMIZATION OF REDUCTION OF COPPER USING Stenotrophomonas maltophilia PD2 BIOMASS AND ARTIFICIAL NEURAL NETWORK MODELING
Environmental Engineering and Management Journal › Vol. 14 › Nr. 1 OPTIMIZATION OF REDUCTION OF COPPER USING
Stenotrophomonas maltophilia PD2 BIOMASS
AND ARTIFICIAL NEURAL NETWORK MODELING
... Autori: Arpita Ghosh ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26616
RURAL DEVELOPMENT THROUGH THE OPTIMIZATION OF THE RENEWABLE ENERGY POTENTIAL
Environmental Engineering and Management Journal › Vol. 14 › Nr. 2 Abstract
The development strategy of the European Union until the year 2020, Europe 2020, militates for an intelligent economy,
sustainable and favorable to inclusion. Following these principles, each Member State establishes its targets and action plans at a
national level. On the other hand, the rural zones benefit from diverse forms of renewable energy which can assure their
development and energetic autonomy, bringing important advantages to the rural community: the diminishing of energy... Autori: Liliana Topliceanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26644
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
PORE STRUCTURE CHARACTERIZATION OF CHEMICALLY MODIFIED BIOCHAR DERIVED FROM RICE STRAW
Environmental Engineering and Management Journal › Vol. 14 › Nr. 2 Abstract
Biochar derived from agricultural biomass waste is increasingly recognized as multifunctional material for various applications
according its characteristics. It is therefore essential to investigate biochar properties before large-scale application. In this study,
rice straw-derived biochars produced at different temperature (550, 650, 750 oC). The resulting biochars were subjected to liquidphase
oxidation by different agents including KOH, HNO3, H2SO4, H2O2 and KMnO4 to obtain bio... Autori: Sobhy M. Yakout ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26661
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
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
FUNGAL LACCASES PRODUCTION USING TOMATO-BASED MEDIUM: A FACTORIAL DESIGN APPROACH
Environmental Engineering and Management Journal › Vol. 14 › Nr. 7 Abstract
This study was aimed to stimulate laccase production by Trametes pubescens MUT 2400 by using a tomato-based medium. Two
sequential 2x2 factorial designs were used to determine the effect of carbon (C) and nitrogen (N) source concentration on laccase
activity and biomass concentration; copper was used as the sole inducer (0.75 mM). Analysis of the first factorial design showed
that N had a strong positive effect on the maximum laccase activity, which occurred at day 12 of cultivation... Autori: Federica Spina ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26795
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
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
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
BIOSORPTION OF SAFRANIN ONTO CHEMICALLY MODIFIED BIOMASS OF MARINE Aspergillus wentii: A KINETIC STUDY
Environmental Engineering and Management Journal › Vol. 15 › Nr. 1 The biosorption of a basic dye, safranin from aqueous solutions by marine fungus Aspergillus wentii, which was chemicallymodified
by esterification of the carboxylic acids (CB), or methylation of amine (NB), or raw biomass (RB) was investigated.
The equilibrium was established after 40 min and the experimental kinetic data obtained for various forms of A.wentii were
applied to the pseudo-first order, pseudo-second order, Bingham and Weber-Morris kinetic models. The pseudo-second order
model ... Autori: Yasmin Khambhaty ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26930
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
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
Salix viminalis vs. Fagus sylvatica - FIGHT FOR RENEWABLE ENERGY FROM WOODY BIOMASS IN ROMANIA
Environmental Engineering and Management Journal › Vol. 15 › Nr. 2 The paper presents a general description of the need to use wooden biomass resulted from Osier willow and beech. This wooden
biomass represents a renewable energy source and some new directions in scientific research field could be opened. The paper
mainly describes a parallel between the energy resulted from these two types of biomass, namely from Salix viminalis L. and
Fagus sylvatica L. species, in order to obtain the best solution between them. Growth crop of this new specie of Osier sali... Autori: Tatiana Grîu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26964
DETERMINATION OF AIR CHANGE RATES BY USING INDOOR CO AS TRACER: APPLICABILITY AND ENVIRONMENTAL ISSUES
Environmental Engineering and Management Journal › Vol. 15 › Nr. 2 Air change rates and ventilation of a room was determined by CO Tracer Decay Technique. The tracer was generated by burning
bulk amount of mosquito coils, an easy and low cost method of CO generation. The temporal decay in CO concentration in
indoor air under closed and open room conditions were determined by collecting indoor air periodically at a few minutes interval
in Tedler Bags and analyzing the same for CO. The air changes rate per hour (ACH) was calculated from the temporal decline of... Autori: Deepanjan Majumdar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26965
EFFECTS OF DIFFERENT PRETREATMENTS ON BIOMASS COMPOSITION EVALUATED BY SPECTRAL AND CHEMOMETRIC TECHNIQUES
Environmental Engineering and Management Journal › Vol. 15 › Nr. 3 Biomass is a very important source for the production of biofuels. During the hydrolysis step of the process for obtaining biofuels
the rate of decomposition of biomass is strictly related to its organic matter content and the operating mode of the facilities. This
paper highlights the effect of different pretreatments on the composition of biomass at the molecular level using Fourier Transform
Infrared Spectroscopy (FTIR) and Principal Component Analysis (PCA). For this experiment, a mixture... Autori: Andreea Cocarcea Rusei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26986
KINETIC AND EQUILIBRIUM STUDIES ON NITRATE ADSORPTION FROM AQUEOUS SOLUTION BY LEWATIT FO 36
Environmental Engineering and Management Journal › Vol. 15 › Nr. 4 The adsorption characteristics of nitrate ions from aqueous solution using Lewatit FO 36 was investigated as a function of pH,
biomass dosage and contact time. Results showed that optimum conditions were obtained at pH 8, adsorbent dosage of 160 mg/L
and contact time of 60 min. At the optimized experimental parameters, the maximum nitrate adsorption capacity of Lewatit FO
36 was 200 mg/g and nitrate adsorption followed Freundlich model. Among seven kinetic models used in this study, the
adso... Autori: Mehdi Ahmadi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26996
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
IMPROVING THE NUTRITIONAL QUALITY OF FODDER YEASTS BY ADDING MINERALS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 5 The aim of this study was the diversification of fodder yeast assortments with viable economic effects while reducing the
pollution to the environment by capitalisation of wastewaters with high monosaccharides content from pulp and paper industry.
As inoculum, in the bioreactor, a mixture of two species of yeasts Candida utilis and Candida arboreea (1:1 ratio) was used at
38°C, pH 5.5 and an air flow of 0.02 L/h was insured. Wastewaters from technological process of pulping of softwood wi... Autori: Andrei I. Simion ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27028
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
SEQUESTRATION OF COPPER (II) FROM SIMULATED WASTEWATER USING PRE–TREATED 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
ENVIRONMENTAL IMPACT ASSESSMENT OF ELECTRICITY GENERATION FROM BIOGAS IN PALESTINE
Environmental Engineering and Management Journal › Vol. 15 › Nr. 9 In Palestine, the energy situation is unique compared to other Middle Eastern Countries, as there are technical and political
challenges for transporting, storing, importing and exporting energy. Actually, energy import from Israel meets the major share
of Palestinian energy needs. Palestinian reliance on Israel concerning its energy supply is an issue due to the political situation.
Furthermore, from an environmental point of view, Israel predominantly relies on fossil fuels for its own elec... Autori: Jacopo Bacenetti ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27120
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
TECHNICAL POTENTIAL FOR USING BIOMASS AS A FUEL IN COGENERATION PLANTS IN SERBIA
Environmental Engineering and Management Journal › Vol. 15 › Nr. 11 The need for ensuring safety of energy supply, as well as the tendency to reduce greenhouse gas emissions has led to greater use
of energy efficient technologies and renewable energy sources. Cogeneration (combined production of heat and electricity) is one
of high-efficiency technologies, because the losses of primary energy are less than losses from the separate generation of heat and
power. Consequently, in 27 EU member-states 70% of the district heating is based on cogeneration plants. Us... Autori: Vladimir Vukašinović ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27177
EFFECT OF FLY ASH ON CROP YIELD AND PHYSICO-CHEMICAL, MICROBIAL AND ENZYME ACTIVITIES OF SODIC SOILS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 11 Safe utilization of fly ash (FA) and reclamation of sodic soils are important environmental problems. In this study a field experiment was carried out with Vigna radiata L. crop using fly ash (FA) and phosphogypsum (PGY) as amendments in sodic soil during 2011 at Lucknow, Uttar Pradesh, India. V. radiata L. was sown in sodic soil amended with press mud (10 t ha-1) considered as control. Besides, 10 and 20 t ha-1 doses of FA and PGY were considered as other four treatments, respectively. The grow... Autori: Kripal Singh ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27180
BIOSORPTION OF ZINC (II) FROM AQUEOUS SOLUTIONS BY NONLIVING LICHEN BIOMASS OF Xanthoria parietina (L.) Th. Fr.
Environmental Engineering and Management Journal › Vol. 15 › Nr. 12 In this study, the biosorption of zinc(II) ions from the aqueous solutions by the lichen biomass of Xanthoria parietina (L.) Th. Fr. was studied as a function of contact time, initial pH of metal solution, biosorbent concentration, initial metal ion concentration and stirring speed in a batch system. The optimum pH value for maximum zinc biosorption was found to be 5.5. Concentrations intervals from 50 mg/L to 250 mg/L were tested and it was observed that the biosorption efficiency depends on th... Autori: Zuleyha Bingul ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27213
PRODUCTION OF MICROBIAL LIPIDS FROM TOMATO WASTE TO BE USED AS FEEDSTOCK FOR BIODIESEL
Environmental Engineering and Management Journal › Vol. 16 › Nr. 1 In this study, the oleaginous yeasts cultured in tomato waste hydrolysates (TWH) to produce microbial lipids that offer a suitable alternative to vegetable oils as feedstock for the biodiesel synthesis. The TWH were prepared by acid hydrolysis (2.5% H2SO4). To obtain higher growth rates, as well as higher lipid contents, Lipomyces starkeyi were cultured under original nitrogen content (TWHON), lower nitrogen content (TWHLN), attained by alkaline precipitation of TWHON followed by centrifugation ... Autori: Abu Yousuf ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27226
ENVIRONMENTALLY FRIENDLY POWER DISPATCH AT SUGAR PLANT WITH OPTIMUM BAGASSE UTILIZATION
Environmental Engineering and Management Journal › Vol. 16 › Nr. 1 Availability of alternate fuels for cogeneration helps to limit the amount of bagasse as fuel at sugar plants and make them available for other uses such as paper manufacture or ethanol production. Due to the increased awareness on the adverse effects of carbon dioxide emission on the environment, power plant operators are compelled to reduce emissions of pollutants during cogeneration. Selection of low pollutant fuels, tapping of renewable energy and use of efficient operating policies can help... Autori: Faisal Pazheri ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27244
EFFECT OF PRETREATMENT ON Ceratophyllum demersum FOR ENHANCED BIOSORPTION OF Cr(VI) AND Cd(II)
Environmental Engineering and Management Journal › Vol. 16 › Nr. 2 In this work, twenty different physical and chemical methods were used to study the effect of pretreatment on Cr(VI) and Cd(II) biosorption by an aquatic plant (Ceratophyllum demersum) biomass. The H3PO4 boiled biomass had the highest biosorption capacity (45 mg/g) for Cr(VI). The NaOH boiled biomass showed a higher biosorption capacity for Cd(II) (63 mg/g). Dunnett's test was carried out to compare the biosorption capacity of raw biomass with those pretreated by H3PO4 and NaOH, and the resu... Autori: Pari Teymouri ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27265
CHARACTERISTICS OF WASTE BARK COMBUSTION
Environmental Engineering and Management Journal › Vol. 16 › Nr. 3 The paper presents some aspects regarding the use of certain bark biomass as sustainable and renewable fuel. The main bark uses are listed exhaustively, emphasizing the fact that they are parts of the forestry biomass. The main problems arising from the ecological burning of bark are highlighted, namely the amount of ash and the resulting gases, especially carbon dioxide, but the emphasis is placed on the amount of heat and ash that bark produces during combustion. Accordingly, the high and low ... Autori: Aurel Lunguleasa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27288
BEHAVIOUR OF Miscanthus AT CUTTING SHEAR WITH STRAIGHT KNIVES WITH DIFFERENT EDGE ANGLES
Environmental Engineering and Management Journal › Vol. 16 › Nr. 5 This paper presents some experimental results regarding mechanical behaviour at shear cutting Miscanthus x giganteus stem with an oblique blade of different edge angles. Experimental determinations were performed using samples of about 30 mm in length and a medium diameter of about 6.3 mm to 8.9 mm. The biomass was cut with three bevel cutting blades of 30 degrees, with a tool angle of 10, 30 and 50 degrees, fitted on an equipment used for mechanical experiments type Hounsfield, with a working s... Autori: Georgiana Moiceanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27317
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
BIOACCUMULATION AND EFFECTS OF ALUMINIUM CONTENT IN ALLEATO 80 WG FUNGICIDE ON SOME LUMBRICIDAE SPECIES
Environmental Engineering and Management Journal › Vol. 16 › Nr. 4 The present study shows the results of the chronic test in evaluating the response of lumbricidae under the action of different concentrations of Alleato 80WG. The earthworm samples were taken from a plot of land cultivated with maize. Survival, biomass and aluminum content bioaccumulated in earthworms have been analyzed. Five replicates were carried out for each experiment. The survival rate showed maximum values (100%) for V5 (control sample), and (200 mg kg-1) (p=1) for V4. The other three co... Autori: Gheorghiţa Brînzea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27334
INFLUENCE OF RECENT LAND USE CHANGE ON TOTAL ORGANIC CARBON STOCK IN HUMOR RIVER BASIN
Environmental Engineering and Management Journal › Vol. 16 › Nr. 4 Inventory and monitoring of total organic carbon stock (TOC) it’s an issue of actuality in the context of breaking into the atmosphere an alarming quantity of CO2 result of human activities. Management and sustainable management of forest and agricultural ecosystems can have a positive influence on maintaining optimal stock of carbon sequestered. A case study achieved in the Humor catchment reveals that changing the land’s utility means important modifications in the quantity of the ... Autori: Eugen Rusu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27336
DEMULSIFICATION OF WATER-IN-OIL EMULSIONS BY A DEMULSIFYING Alcaligenes sp. STRAIN GROWTH ON N-ALKANE
Environmental Engineering and Management Journal › Vol. 16 › Nr. 7 Environment-friendly demulsifying strains could be applied in breakup of emulsion produced in the petroleum industry. The demulsifying strain Alcaligenes sp. S-XJ-1 was found to be capable of utilizing paraffin or certain pure n-alkane as its sole carbon source, and exhibited a strong cell surface hydrophobicity above 70% and demulsifying ability above 80%. A maximum biomass of 6.27 g/L was obtained when the demulsifying strain was cultured using eicosane as carbon source. A positive correlation... Autori: Xiang-Feng Huang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27379
MODELING OF DYE REDUCTION BY SLUDGE DIGESTION: COMBINED EFFECT OF BIOCHEMICAL AND CHEMICAL REDUCTION
Environmental Engineering and Management Journal › Vol. 16 › Nr. 7 The kinetics of azo dye reduction based on combined effect of biochemical reduction by anaerobic mixed culture and chemical reduction with hydrogen sulfide was investigated. Hydrogen sulfide was produced by sulphate reducing bacteria existing in the anaerobic mixed culture. The effect of initial anaerobic biomass, initial substrate, and initial dye (Reactive Orange 107) concentrations on reduction kinetics were studied with batch assays. The municipal waste sludge was used as electron donating s... Autori: Umay Gokce Ozkan-Yucel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27386
ASSESSMENT OF PERFORMANCE AND ADVANTAGES RELATED TO THE USE OF A NATURAL COAGULANT IN THE INDUSTRIAL WASTEWATER TREATMENT
Environmental Engineering and Management Journal › Vol. 16 › Nr. 8 The paper deals with the demonstration of the technical and environmental advantages related to the use of a tannin based
coagulant in textile wastewater treatments. The natural coagulant was tested to evaluate its performance in the
coagulation/flocculation process, the level of biodegradability in both aerobic and anaerobic conditions and the eco-toxicological
risks for aquatic systems. Results were compared with a common inorganic metal based coagulant. The findings at lab scale
showed th... Autori: Antonio Giuliano ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27407
ENVIRONMENTAL IMPACT OF SECOND-GENERATION SUGARS PRODUCTION FROM CARDOON RESIDUES
Environmental Engineering and Management Journal › Vol. 16 › Nr. 8 Biofuels and biochemicals are currently centre stage in the on-going scientific and political debate. The prevalent opinion is that
their use can significantly reduce the greenhouse gases (GHGs) emissions and primary energy demand along their whole value
chain. This study aims at evaluating the environmental impact in terms of GHGs related to carbon dioxide (CO2) of secondgeneration
sugars (2GSs) production from cardoon residual biomass. Cardoon is a favourable crop in Mediterranean areas for... Autori: Maria Teresa Petrone ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27413
BIOGAS PRODUCTION FROM WHEAT STRAW PRE-TREATED WITH HYDROLYTIC ENZYMES OR SODIUM HYDROXIDE
Environmental Engineering and Management Journal › Vol. 16 › Nr. 8 Lignocellulosic residues are relatively recalcitrant to bioconversion during anaerobic digestion (AD) for biogas production. Pre-treatments with cellulolytic enzymes or diluted alkali can facilitate biomass hydrolysis and enhance the process. Both pre-treatments require low energy and chemical inputs, without accumulation of inhibitor. Milled wheat straw was pre-treated with hydrolytic enzymes or with diluted NaOH before AD. The pre-treatments were performed on sterilized, stabilized with formic... Autori: Ciro Vasmara ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27420
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
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
OPTIMIZATION OF BIOMASS AND ENDO-Β-1,4-GLUCANASE BY WHITE ROT FUNGI NATIVE FROM ARGENTINA
Environmental Engineering and Management Journal › Vol. 16 › Nr. 11 A large number of microorganisms are capable of producing cellulases; however, fungi are considered among the most active
enzymes producers. Different strains of white rot fungi (WRF) were reported to have a great potential for biotechnological
applications and cellulase enzymes is much involved in this effect, especially for bioethanol production. Misiones is included in a
forest region characterized by a vast biodiversity, and within this environment, a large number of microorganisms can be... Autori: Ernesto M. Giorgio ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27489 |