Surface rearrangement of nanoscale zerovalent iron: the role of pH and its implications in the kinetics of arsenate sorption.

abstract：:A series of batch experiments on free swell, hydraulic conductivity, and contaminant removal efficiency was performed for the combination of bentonite and zero valent iron (ZVI), in order to identify the optimal mixing ratio between bentonite and ZVI. The swell volume of the bentonite-ZVI mixtures did not change with ...

journal_title：Environmental technology

authors： Lee HJ,Chun BS,Kim WC,Chung M,Park JW

更新日期：2006-03-01 00:00:00

abstract：:A coupled electrochemical process and biological treatment was used to remove a biorecalcitrant antibiotic: sulfamethazine (SMT). The pretreatment was performed in a home-made flow cell involving graphite felt as a working electrode at potentials of 1 and 1.6 V/saturated calomel electrode (SCE); it was followed by a b...

journal_title：Environmental technology

authors： Saidi I,Fourcade F,Floner D,Soutrel I,Bellakhal N,Amrane A,Geneste F

更新日期：2017-11-01 00:00:00

abstract：:Carbon-coated TiO2 powders were prepared from the mixtures of anatase (ST-01) and carbon precursor poly(vinyl alcohol) in different ratios by carbonization at 900 degrees C in a flow of either Ar or N2. Carbon-coated TiQ2 thus prepared was either fixed on an adhesive tape or formed into a film by using the organic bin...

journal_title：Environmental technology

authors： Inagaki M,Nonaka M,Kojin F,Tsumura T,Toyoda M

更新日期：2006-05-01 00:00:00

abstract：:Five yeast strains, namely Rhodotorula rubra, Candida tropicalis, Candida utilis, Candida boidinii, Trichosporon cutaneum, were isolated from soil spots of a salad oil factory, and applied for continuous treatment of salad oil manufacturing wastewater. The oil and COD removal performance of the mixed cultures were com...

journal_title：Environmental technology

authors： Zheng S,Yang M,Lv W,Liu F

更新日期：2001-05-01 00:00:00

abstract：:A soil-column system was tested for the removal of soluble organics and nutrients from partially treated liquid swine manure. The liquid manure was applied to the 900 mm deep (300 mm of local topsoil and 600 mm of local subsoil) soil columns continuously for an eight-week period, and leachate as well as soil samples w...

journal_title：Environmental technology

authors： Yang H,Xiao J,El-Din MG,Buchanan ID,Bromley D,Ikehata K

更新日期：2007-01-01 00:00:00

abstract：:Tertiary treatment of municipal wastewater by dissolved air flotation was studied on a pilot-scale. The effects of coagulant dose, flocculation pattern, dispersion water recycle ratio and hydraulic surface load on process performance were evaluated. The treatment of primary effluents by dissolved air flotation was inv...

journal_title：Environmental technology

authors： Koivunen J,Heinonen-Tanski H

更新日期：2008-01-01 00:00:00

abstract：:Stringent water treatment criteria and rapidly growing pollutant loads provoke the demand for retrofitting wastewater treatment plants towards a higher capacity. In this study, we assess a two stage alternating aeration (AA) bioreactor equipped with electroflotation (EF) clarifier, for nitrogen removal within a short ...

journal_title：Environmental technology

authors： Cho K,Chung CM,Kim YJ,Hoffmann MR,Chung TH

更新日期：2013-09-01 00:00:00

abstract：:One of the main problems of the Whole Effluent Toxicity is related to the use of bioindicator species representative of the target environment. Most wastewater discharges are of fresh water, so their salinity has to be adjusted when they are discharged to transitional and marine coastal waters, in order to perform tox...

journal_title：Environmental technology

authors： Libralato G,Losso C,Avezzù F,Volpi Ghirardini A

更新日期：2009-01-01 00:00:00

abstract：:Acid mine drainage (AMD) is the major effluent generated from metal and coal mines, causing serious ecological risks and degradation of aquatic habitats and surrounding soil quality. Biochemical passive reactors (BPRs) are an option for improving AMD affected water. This study investigates the effect of the size and c...

journal_title：Environmental technology

authors： Vásquez Y,Galvis JA,Pazos J,Vera C,Herrera O

更新日期：2020-12-30 00:00:00

abstract：:The adsorption of sulfadiazine from water by expanded graphite (EG), a low cost and environmental-friendly adsorbent, was investigated. Several adsorption parameters (including the initial sulfadiazine concentration, contact time, pH of solution, ionic strength and temperature) were studied. Results of equilibrium exp...

journal_title：Environmental technology

authors： Zhang L,Wang Y,Jin S,Lu Q,Ji J

更新日期：2017-10-01 00:00:00

abstract：:Effects of Mo(6+) concentration on phototrophic hydrogen production of Rhodobacter sphaeroides were investigated using lactate as the sole carbon source. Results showed that an increase of Mo(6+) from nil to 1000 microg l(-1) led to increases in hydrogen yield, maximum production rate, conversion efficiency, biomass y...

journal_title：Environmental technology

authors： Fang HH,Li RY,Zhang T

更新日期：2011-08-01 00:00:00

abstract：:Life cycle assessments of a range of wastewater treatment processes have been undertaken. At lower consent standards rotating biological contactors and biological filters exhibit lower environmental burdens for the required functionality than other process options. However, at tighter consents this distinction becomes...

journal_title：Environmental technology

authors： Gaterell MR,Griffin P,Lester JN

更新日期：2005-03-01 00:00:00

abstract：:Coal gasification waste water treatment needed a sustainable and affordable plan to eliminate the organic contaminants in order to lower the potential environmental and human health risk. In this paper, a laboratory-scale anaerobic-aerobic intermittent system carried out 66 operational cycles together for the treatmen...

journal_title：Environmental technology

authors： Ji Q,Tabassum S,Yu G,Chu C,Zhang Z

更新日期：2015-01-01 00:00:00

abstract：:This study investigated the effect of various intermittent aeration (IA) cycles on organics and nutrient removal, and microbial communities in an integrated fixed-film activated sludge (IFAS) reactor treating municipal waste water. Average effluent biological oxygen demand (BOD), chemical oxygen demand (COD), total su...

journal_title：Environmental technology

authors： Singh NK,Bhatia A,Kazmi AA

更新日期：2017-11-01 00:00:00

abstract：:The reliability of enzyme-linked immunosorbent assay (ELISA) tests as a screening technique to address groundwater contamination was tested in an area following leakage of gasoline from a petrol station. Immunoassay data of benzene, toluene, ethylbenzene, and o-, m- and p-xylene (BTEX) were compared with results obtai...

journal_title：Environmental technology

authors： Francioni E,Fillmann G,Hamacher C,Wagener Ade L,Depledge MH,Readman JW,Meniconi Mde F

更新日期：2003-06-01 00:00:00

abstract：:Two different organophilic bentonites obtained by cationic exchange with benzyldimethyloctadecylammonium chloride and trimethyloctadecylammonium chloride have been used to adsorb the organic fraction of a tannery sludge. The exchange process was carried out to different extents to obtain bentonite samples with differe...

journal_title：Environmental technology

authors： Cioffi R,Costanzo S,Maffucci L,Santoro L

更新日期：2001-01-01 00:00:00

abstract：:Separation of nanoscale oil droplets in the cutting-oil emulsion by electrocoagulation-flotation (ECF) was carried out in a bubble column reactor (BCR) and an external-loop airlift reactor (ALR). Under the batch operation, aluminium electrode provided the highest efficiency of 99% and required the shortest separating ...

journal_title：Environmental technology

authors： Chawaloesphonsiya N,Prommajun C,Wongwailikhit K,Painmanakul P

更新日期：2017-05-01 00:00:00

abstract：:There is considerable interest in recuperative thickening (RT), the recycling of partially digested solids in an anaerobic digester outlet stream back into the incoming feed, as a 'high-performance' process to increase biogas production, increase system capacity, and improve biosolids stabilization. While polymer floc...

journal_title：Environmental technology

authors： Cobbledick J,Zhang V,Rollings-Scattergood S,Latulippe DR

更新日期：2017-11-01 00:00:00

abstract：:A charge-coupled device camera was used for the optical monitoring of activated sludge flocs and filaments, and the image analysis results were compared with the effluent clarity at a full-scale activated sludge plant during a three-month period. The study included a maintenance stoppage at the wastewater treatment pl...

journal_title：Environmental technology

authors： Koivuranta E,Keskitalo J,Stoor T,Hattuniemi J,Sarén M,Niinimäki J

更新日期：2014-08-01 00:00:00

abstract：:The role of carbonaceous sediment oxygen demand (CSOD) due to oxidation of sulfides reduced in oxygen dynamics in crude oil contaminated salt marshes was investigated through a mathematical model. An existing CSOD model was calibrated from laboratory data sets through nonlinear regression. The effect of oil and fertil...

journal_title：Environmental technology

authors： Shin WS,Pardue JH,Choi SJ

更新日期：2001-07-01 00:00:00

abstract：:A highly sensitive and selective optical chemosensor (Arg-Rhoen) for determination of Au3+ was prepared by covalent immobilization of rhodamine ethylenediamine on agarose gel. Spectrophotometric studies of complex formation, chemical structures and purity of the hydrogel sensor were carried out using TGA, NMR, TEM, an...

journal_title：Environmental technology

authors： Kaewtong C,Wanich S,Wanno B,Tuntulani T,Pulpoka B

更新日期：2020-12-07 00:00:00

abstract：:Used polyethylene terephthalate bottles (PET) dumped indiscriminately onto bare lands and water bodies constitute an eyesore. This problem is viewed as a serious impediment to the flourishing tourism industry in Mauritius. Currently, over 100 million PET bottles are generated annually and the only fully operational di...

journal_title：Environmental technology

authors： Foolmaun RK,Ramjeeawon T

更新日期：2012-02-01 00:00:00

abstract：:The assessment of vermicompost (VC) as a low-cost and alternative adsorbent for the removal of the pesticide methylparathion (MP) from an aqueous medium has been investigated by batch and column experiments. Parameters related to MP adsorption, i.e. equilibrium time (61.5 min) and adsorption pH (6.8) were optimized by...

journal_title：Environmental technology

authors： Mendes CB,Lima Gde F,Alves VN,Coelho NM,Dragunski DC,Tarley CR

更新日期：2012-01-01 00:00:00

abstract：:In this paper, catalytic samples of 10, 20, 30, 40 and 50% (w/w) urea/activated carbon fibre (AFC), 10% urea--5% La2O3/ACF, 10% urea--10% La2O3/ACF, 10% urea--15% La2O3/ACF, 20% urea--5% La2O3/ACF, 20% urea--10% La2O3/ACF, and 20% urea-15% La2O3/ACF were prepared and used for removal of NO under the condition of: NO, ...

journal_title：Environmental technology

authors： Lu P,Zeng Z,Li C,Zeng G,Guo J,Jiang X,Zhai Y,Fan X

更新日期：2012-04-01 00:00:00

abstract：:A mathematical model to simulate the biological processes occurring in a membrane bioreactor (MBR) is presented. The model accounts for different MBR technical features by introducing specific permeability parameters for the applied membrane system. The model considers for the heterotrophic storage process and the for...

journal_title：Environmental technology

authors： Tenore A,Vieira J,Frunzo L,Luongo V,Fabbricino M

更新日期：2020-06-01 00:00:00

abstract：:The performance of selenium remediation agents, mainly gamma alumina sorbents and zerovalent metals is greatly inhibited in the presence of large concentrations of sulfate found in selenium-rich agricultural drainage water. It is therefore imperative to remove sulfates from these contaminated waters, prior to their tr...

journal_title：Environmental technology

authors： Jegadeesan G,Mondal K,Lalvani SB

更新日期：2005-10-01 00:00:00

abstract：:Numerical simulations and experimental validations were conducted to determine grit removal efficiency and separation processes for inorganic suspended solids (ISS) with different particle sizes in a vortex-type grit chamber (Pista). The Euler-Lagrange method was used to simulate solid-liquid two-phase flow; the Unste...

journal_title：Environmental technology

authors： Lu Z,Yu L,Xu X,Ji F,Liu C

更新日期：2018-12-01 00:00:00

abstract：:An anaerobic membrane bioreactor (MBR) was operated for 367 days to treat domestic wastewater originating from the Sfax wastewater treatment plant. The results showed that the MBR was not very efficient because of the considerable fluctuations in the domestic wastewater composition and the presence of toxic compounds ...

journal_title：Environmental technology

authors： Saddoud A,Abdelkafi S,Sayadi S

更新日期：2009-12-01 00:00:00

abstract：:Optimization of Acid Orange 7 (AO7) treatment using heterogeneous Fenton-like method in a recirculating fluidized-bed reactor (FBR) was investigated by using central composite design (CCD). Natural magnetite (NM) as Fenton-like catalyst was characterized using scanning electron microscopy. A nonlinear CCD model was ob...

journal_title：Environmental technology

authors： Aghdasinia H,Arehjani P,Vahid B,Khataee A

更新日期：2017-10-01 00:00:00

abstract：:This study was conducted to investigate the possible relationship between a molecular biological investigation and water quality parameters in monitoring groundwater pollution at the immediate boundary of uncontrolled landfills and their downgradient aquifers, which may consequently facilitate unbiased monitoring for ...

journal_title：Environmental technology

authors： Park HA,Han JS,Kim CG

更新日期：2008-07-01 00:00:00