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Bio-transformation and stabilization of arsenic (As) in contaminated soil using arsenic oxidizing bacteria and FeCl3 amendment
Karn, Santosh Kumar1,2,3; Pan, Xiangliang1,3; Jenkinson, Ian R.4,5
2017-04-25
发表期刊3 BIOTECH
卷号7
文章类型Article
摘要A combination of biological and chemical methods was applied in the present study to evaluate the removal of arsenic (As) from contaminated soil. The treatment involved As-oxidizing microbes aimed of transforming the more toxic As (III) to less toxic As (V) in the soil. FeCl3 was added at three different concentrations (1, 2, and 3%) to stabilize the As (V). Leaching of the treated soil was investigated by making a soil column and passing tap water through it to determine solubility. Experimental results indicated that the bacterial activity had a pronounced positive effect on the transformation of As, and decreased the soluble exchangeable fraction from 50 to 0.7 mg/kg as compared to control and from 50 to 44 mg/kg after 7 days of treatment. FeCl3 also played an indispensable role in the adsorption/stabilization of As in the soil; 1 and 2% FeCl3 strongly influenced the adsorption of As (V). The soil leachate contained negligible amount of As and trace metals, which indicates that combining an efficient microbe with a chemical treatment is very effective route for the removal and stabilization of As from contaminated soil in the environment.
关键词Soil Remediation Pseudomonas Sp Xs4 Oxidizing Microbes Fecl3 Treatment Soil Leachate Contaminated Sites Environments
DOI10.1007/s13205-017-0681-1
收录类别SCI
语种英语
WOS记录号WOS:000402546800009
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文献类型期刊论文
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条目标识符http://ir.qdio.ac.cn/handle/337002/137083
专题海洋生态与环境科学重点实验室
作者单位1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Lab Environm Pollut & Bioremediat, South Beijing Rd, Urumqi 830011, Xinjiang, Peoples R China
2.Natl Inst Technol, Dept Biotechnol, GE Rd, Raipur 492001, CG, India
3.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, South Beijing Rd, Urumqi 830011, Xinjiang, Peoples R China
4.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Pollut, Qingdao 266071, Peoples R China
5.Agcy Consultat & Res Oceanog, F-19320 La Roche Canillac, Lavergne, France
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Karn, Santosh Kumar,Pan, Xiangliang,Jenkinson, Ian R.. Bio-transformation and stabilization of arsenic (As) in contaminated soil using arsenic oxidizing bacteria and FeCl3 amendment[J]. 3 BIOTECH,2017,7.
APA Karn, Santosh Kumar,Pan, Xiangliang,&Jenkinson, Ian R..(2017).Bio-transformation and stabilization of arsenic (As) in contaminated soil using arsenic oxidizing bacteria and FeCl3 amendment.3 BIOTECH,7.
MLA Karn, Santosh Kumar,et al."Bio-transformation and stabilization of arsenic (As) in contaminated soil using arsenic oxidizing bacteria and FeCl3 amendment".3 BIOTECH 7(2017).
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