Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.ecoenv.2015.11.021 |
Electro-kinetic remediation coupled with phytoremediation to remove lead, arsenic and cesium from contaminated paddy soil | |
Mao, Xinyu1,2; Han, Fengxiang X.2; Shao, Xiaohou1; Guo, Kai2; McComb, Jacqueline2; Arslan, Zikri2; Zhang, Zhanyu1 | |
通讯作者 | Mao, Xinyu ; Han, Fengxiang X. |
来源期刊 | ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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ISSN | 0147-6513 |
EISSN | 1090-2414 |
出版年 | 2016 |
卷号 | 125页码:16-24 |
英文摘要 | The objectives of this study were to investigate distribution and solubility of Pb, Cs and As in soils under electrokinetic field and examine the processes of coupled electrokinetic phytoremediation of polluted soils. The elevated bioavailability and bioaccumulation of Pb, As and Cs in paddy soil under an electrokinetic field (EKF) were studied. The results show that the EKF treatment is effective on lowering soil pH to around 1.5 near the anode which is beneficial for the dissolution of metal(loid)s, thus increasing their overall solubility. The acidification in the anode soil efficiently increased the water soluble (SOL) and exchangeable (EXC) Pb, As and Cs, implying enhanced solubility and elevated overall potential bioavailability in the anode region while lower solubility in the cathode areas. Bioaccumulations of Pb, As and Cs were largely determined by the nature of elements, loading levels and EKF treatment. The native Pb in soil usually is not bioavailable. However, EKF treatment tends to transfer Pb to the SOL and EXC fractions improving the phytoextraction efficiency. Similarly, EKF transferred more EXC As and Cs to the SOL fraction significantly increasing their bioaccumulation in plant roots and shoots. Pb and As were accumulated more in plant roots than in shoots while Cs was accumulated more in shoots due to its similarity of chemical properties to potassium. Indian mustard, spinach and cabbage are good accumulators for Cs. Translocation of Pb, As and Cs from plant roots to shoots were enhanced by EKF. However, this study indicated the overall low phytoextraction efficiency of these plants. (C) 2015 Elsevier Inc. All rights reserved. |
英文关键词 | Metal(loid) Mobility Bioavailability Bioaccumulation Electro-kinetic remediation Phytoremediation |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000368753400003 |
WOS关键词 | MUSTARD BRASSICA-JUNCEA ; POTENTIAL LEACHING RISK ; TOXIC HEAVY-METALS ; ARID-ZONE SOILS ; INDIAN MUSTARD ; SEQUENTIAL EXTRACTION ; ENHANCED PHYTOREMEDIATION ; PLANTS ; ACCUMULATION ; ZN |
WOS类目 | Environmental Sciences ; Toxicology |
WOS研究方向 | Environmental Sciences & Ecology ; Toxicology |
来源机构 | 河海大学 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/192522 |
作者单位 | 1.Hohai Univ, Coll Water Conservancy & Hydropower Engn, Nanjing 210098, Jiangsu, Peoples R China; 2.Jackson State Univ, Dept Chem & Biochem, 1400 JR Lynch St,POB 17910, Jackson, MS 39217 USA |
推荐引用方式 GB/T 7714 | Mao, Xinyu,Han, Fengxiang X.,Shao, Xiaohou,et al. Electro-kinetic remediation coupled with phytoremediation to remove lead, arsenic and cesium from contaminated paddy soil[J]. 河海大学,2016,125:16-24. |
APA | Mao, Xinyu.,Han, Fengxiang X..,Shao, Xiaohou.,Guo, Kai.,McComb, Jacqueline.,...&Zhang, Zhanyu.(2016).Electro-kinetic remediation coupled with phytoremediation to remove lead, arsenic and cesium from contaminated paddy soil.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,125,16-24. |
MLA | Mao, Xinyu,et al."Electro-kinetic remediation coupled with phytoremediation to remove lead, arsenic and cesium from contaminated paddy soil".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 125(2016):16-24. |
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