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 treatment for selenium removal. This paper presents data on enhanced selenium removal resulting from a two stage process involving the use of barium chloride in the first stage followed by a selenium remediation agent in the second. Barium chloride is known to stoichiometrically precipitate out sulfates. In addition to the sulfate removal from the contaminated solutions, a significant amount of selenate immobilization in the precipitated solids was achieved. When a loading of 15 g l(-1) of BaCl2, was employed, 100% selenate removal from an aqueous solution (containing 1 mg l(-1) selenate, 4 g l(-1) of sulfate and 2.5 g l(-1) of chloride) was achieved by the use of BaCl2, alone. Bimetallic NiFe particles, gamma alumina and activated carbon were employed to further remove selenium in the second stage. A solution containing 1 mg l(-1) and 4 g l(-1) of selenate and sulfate, respectively, when treated sequentially with 10 g l(-1) of BaCl2 and NiFe powder showed 100% selenium removal.
journal_name
Environ Technoljournal_title
Environmental technologyauthors
Jegadeesan G,Mondal K,Lalvani SBdoi
10.1080/09593332608618475subject
Has Abstractpub_date
2005-10-01 00:00:00pages
1181-7issue
10eissn
0959-3330issn
1479-487Xjournal_volume
26pub_type
杂志文章abstract::A novel system integrating an upflow anaerobic sludge blanket (UASB) reactor and a two-stage biological aerated filter (BAF) system was investigated as advanced treatment of heavy oil wastewater with large amounts of dissolved recalcitrant organic substances and low levels of nitrogen and phosphorus nutrients. #1 BAF,...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2015.1030346
更新日期:2015-01-01 00:00:00
abstract::Untreated wastewater from the dye industry and dyehouses cannot be directly discharged into the environment due to the high content of organic matter and intensive colouration, even with low concentrations of dye. In this paper, the application of a high voltage pulsed electrical discharge in the aqueous phase has bee...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2004.9619370
更新日期:2004-07-01 00:00:00
abstract::Increasingly stricter ammonia and nitrogen release regulations with respect to wastewater effluents are creating a need for tertiary treatment systems. The moving bed biofilm reactor (MBBR) is being considered as an upgrade option for an increasing number of wastewater treatment facilities due to its small footprint a...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2015.1077272
更新日期:2016-01-01 00:00:00
abstract::Ozonation of 2,4-dichlorophenol (DCP) in the presence of permanganate has been investigated at various levels of pH. Compared with only 40% in single ozonation, by catalytic ozonation the total organic carbon removal efficiency reached almost 95%. It has been shown that the addition of 0.5 mg L(-1) MnO4- (based on man...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593331003713677
更新日期:2010-10-01 00:00:00
abstract::Sulfamethoxazole (SMX) is a commonly used antibiotic for both human and animals. The frequent detection of SMX in natural water bodies and sediment has become an issue of great environmental concern due to its potential risk to induce antibiotic resistance in pathogenic bacteria. In the present work, the catalytic wet...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2018.1512657
更新日期:2020-03-01 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
pub_type: 杂志文章
doi:10.1080/09593330.2020.1864024
更新日期:2020-12-30 00:00:00
abstract::Anodic oxidation at a boron-doped diamond anode of cork boiling wastewater was successfully used for mineralization and biodegradability enhancement required for effluent discharge or subsequent biological treatment, respectively. The influence of the applied current density (30-70 mA/cm2) and the background electroly...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2014.934743
更新日期:2015-01-01 00:00:00
abstract::High concentrations of heavy metals, such as arsenic, in soils have potential long-term environmental and health consequences due to their persistence in the environment and their associated toxicity to biological organisms. Aspergillus nidulans isolated from arsenic-contaminated soil has the potential to remove arsen...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330902971279
更新日期:2009-08-01 00:00:00
abstract::Understanding of mass transfer kinetics is important for biosorption of nitrogen compounds from palm oil mill effluent (POME) to gain a mechanistic insight into future biological processes for the treatment of high organic loading wastewater. In this study, the rates of global and sequential mass transfer were determi...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1351494
更新日期:2018-09-01 00:00:00
abstract::This study examined the changes in the bacterial community during biodegradation of polycyclic aromatic hydrocarbon (PAH) substrate when N'-N' dimethylformamide (DMF) was added. The microbial populations that biodegrade the PAH substrate were assessed by Fluorescence in-situ hybridization (FISH) and changed from 49.45...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332708618613
更新日期:2006-01-01 00:00:00
abstract::Metal sulphide tailings present a potential risk for the environment because of their natural oxidability which leads to the production of acid mine drainage. The prospected site close to Marrakech includes zinc, lead and copper sulphide deposits. This site is located in an agricultural area near the Tensift River whi...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332808618861
更新日期:2007-09-01 00:00:00
abstract::In Sweden, waste incineration has played a major role in sustainable waste management, as well as generating combined heat and electricity for many years. Incineration of combustible waste produces residues such as fly ash and bottom ash. The chemical composition of both ashes shows that they consist of bulk metals an...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2012.722688
更新日期:2013-03-01 00:00:00
abstract::A hydrometallurgical circuit process combining the leaching of metals with the electrolytic regeneration of the mass separating agent is an option to effectively treat heavy metal contaminated solids. This process aims towards a dosed loop utilisation of the extractant by its regeneration and recycling, enabling the u...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332308618385
更新日期:2002-05-01 00:00:00
abstract::We assessed the physicochemical and microbiological properties of composting toilet products in Abidjan for their potential use in agriculture. Samples of urine and faeces were collected and analysed after 123 days of storage in plastic cans (urine) and 8 months of storage in closed composting bags (faeces). Selected ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1387610
更新日期:2019-01-01 00:00:00
abstract::Micelle enhanced ultrafiltration (MEUF) is a surfactant-based membrane separation process that may be used to separate target ions from mixed metal aqueous solutions, such as leachates of coal ash and other geological wastewaters. The ability of MEUF to separate rare earth elements (REEs) was evaluated using sodium do...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1812732
更新日期:2020-09-22 00:00:00
abstract::Pyrolysis is potentially an effective treatment of oily sludge for oil recovery, and its kinetics and efficiency are expected to be affected by additives. In the present study, the pyrolysis parameters, including heating rate, final pyrolysis temperature, and pyrolysis time of oily sludge in the presence of agricultur...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2016.1194481
更新日期:2017-02-01 00:00:00
abstract::Doping non-metals onto TiO2 has been regarded as a promising way to gain a more effective photocatalyst. In this paper, N, F-codoped TiO2 was synthesized by the sol-gel method, demonstrating both high adsorption capacity and high photocatalytic activity under visible light irradiation. Samples were characterized by X-...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1422555
更新日期:2019-04-01 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
pub_type: 杂志文章
doi:10.1080/09593330.2016.1273395
更新日期:2017-11-01 00:00:00
abstract::The distribution and accumulation of heavy metals in the sediments of two rivers which cross various agglomerations of Tangier city, Morocco, were investigated. Surficial sediment samples were collected during 2005 and characterized for metal content (Zn, Pb, Cd, Cu, Cr and Ni), organic matter, total nitrogen, and n-h...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330903397763
更新日期:2010-02-01 00:00:00
abstract::The study examined the preparation, characterization and the use of carbon xerogel (CX) material for the adsorption of three model naphthenic acids (NAs); such as, heptanoic acid (HPA), 5-cyclohexanepentanoic acid (CHPA), and 5-phenylvaleric acid (PVA). CX was synthesized by sol-gel method from resorcinol and formalde...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2019.1615130
更新日期:2020-11-01 00:00:00
abstract::In this work, the reduction of the moisture content from waste oils by a bentonite-based adsorption process was investigated as an alternative for reuse in energy production. Waste cooking oil (WCO) and waste poultry fat (WPF) were characterised (moisture and viscosity, values of acidity, saponification, and peroxide)...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1728391
更新日期:2020-02-18 00:00:00
abstract::Red mud, an industrial by-product generated during the processing of bauxite ore, was investigated as an inexpensive and effective adsorbent for the adsorption of methylene blue from aqueous solution. Chemical and heat treatments were applied to the raw red mud. The effects of contact time, adsorbent amount, pH, tempe...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2010.529946
更新日期:2011-08-01 00:00:00
abstract::UV-light irradiated photocatalytic reduction of Cr(VI) to Cr(III) in aqueous solution using ZnFe2O4 nanoparticles in the presence of formic acid was reported. X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS) and UV-Vis diffuse reflectance spectroscopy (DRS) were e...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1713902
更新日期:2020-01-21 00:00:00
abstract::The multiple anoxic and aerobic (AO) process is an advanced biological nitrogen-removal process, and nitrous oxide (N2O) emission might affect its sustainable application. Nitrogen removal and N2O emission in a step-feeding multiple AO sequencing batch reactor (SBRS) was examined, in comparison with a one-feeding sequ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1311947
更新日期:2018-04-01 00:00:00
abstract::In this study we have investigated whether electron acceptors, such as nitrate or sulphate ions, competitively inhibit the reduction of perchlorate in brine in continuous up-flow packed bed bioreactors. The effect of pH and hydraulic retention time (HRT) on the reduction of perchlorate at high salinity has also been e...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593331003621557
更新日期:2010-05-01 00:00:00
abstract::Two types of cathodic biofilm in microbial fuel cells (MFC) were established for comparison on their performance and microbial communities. Complete autotrophic simultaneous nitrification and denitrification (SND) without organics addition was achieved in nitrifying-MFC (N-MFC) with a total nitrogen (TN) removal rate ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2015.1080764
更新日期:2016-01-01 00:00:00
abstract::Dry and chemical torrefaction of sugar cane bagasse was examined in this study with the aim of stabilising and upgrading the fuel properties of bagasse. Dry torrefaction was conducted at temperatures from 160°C to 300°C under inert conditions, whilst chemical torrefaction incorporated a H2SO4 pre-treatment of bagasse....
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2016.1237555
更新日期:2017-07-01 00:00:00
abstract::Screened dairy manure, with a total solids content equal to 34.7 g TS l(-1), was subjected to a coagulation-flocculation treatment using FeCl, as coagulant and a medium cationic polyacrylamide (MCP1). The effect of changing doses of the additives (FeCl3 and MCP1) on the properties of supernatant fractions was studied ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332708618629
更新日期:2006-02-01 00:00:00
abstract::Cell agglomeration studies were conducted in anaerobic fluidized bed reactors without any external support. Granulation was studied at different combinations of loading and mixing conditions utilizing synthetic wastewater. Both single-stage and two-stage biomethanation processes were studied. Reactors of volume 0.55, ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332608618514
更新日期:2005-07-01 00:00:00
abstract::Liquid-state bioconversion (LSB) technique has great potential for application in bioremediation of sewage sludge. The purpose of this study is to determine the optimum level of LSB process of sewage sludge treatment by mixed fungal (Aspergillus niger and Penicillium corylophilum) inoculation in a pilot-scale bioreact...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2015.1058860
更新日期:2016-01-01 00:00:00