Effects of electrokinetic-assisted phytoremediation of a multiple-metal contaminated soil on soil metal bioavailability and uptake by Indian mustard

被引：102
作者：
Cang, Long [1 ,2 ]
Wang, Quan-Ying [1 ,2 ]
Zhou, Dong-Mei [1 ]
Xu, Hui [1 ,3 ]
机构：
[1] Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
[3] Shandong Normal Univ, Coll Populat Resource & Environm, Jinan 250014, Peoples R China
来源：
SEPARATION AND PURIFICATION TECHNOLOGY | 2011年 / 79卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Electrokinetic-assisted phytoremediation; Heavy metals; Indian mustard; Chemical speciation; RHIZOSPHERE-BASED METHOD; EXTRACTION METHODS; HEAVY-METALS; REMEDIATION; SPECIATION; CADMIUM; ZINC; CU; PHYTOEXTRACTION; REMOVAL;
D O I：
10.1016/j.seppur.2011.02.016
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Electrokinetic-assisted phytoremediation is an innovative technology to decontaminate heavy metal contaminated soil. In this study, the effect of electric current on plant growth and speciation of soil heavy metals has been investigated by pot experiments, and the remediation processes of electrokinetic-assisted phytoremediation has been discussed. After Indian mustard (Brassica juncea) grew for 35 d, four voltage gradients (0, 1, 2, 4 V cm(-1)) of direct-current (DC) were applied timely (8 h d(-1)) across the soils for 16 d. The extractable soil metals by different extraction methods had a significant redistribution from the anode to the cathode after the treatments. Simple correlation analysis indicated that the correlation coefficients of the extractable soil metals with root metals were better than that with shoot metals. Plant uptake of metals increased by the electrokinetic-assisted phytoremediation, and a medium voltage gradient of 2 V cm-1 was the best due to the highest metal accumulation in the plant. Voltage gradient was the most important factor in affecting the plant growth, soil properties and metal concentrations in the soil and plant. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：246 / 253
页数：8
相关论文
共 29 条
[1]   Electrokinetic enhancement on phytoremediation in Zn, Pb, Cu and Cd contaminated soil using potato plants [J].
Aboughalma, Hanssan ;
Bi, Ran ;
Schlaak, Michael .
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING, 2008, 43 (08) :926-933
[2]   PRINCIPLES OF ELECTROKINETIC REMEDIATION [J].
ACAR, YB ;
ALSHAWABKEH, AN .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1993, 27 (13) :2638-+
[3]  
Baker AJM, 2000, PHYTOREMEDIATION OF CONTAMINATED SOIL AND WATER, P85
[4]   Copper bioavailability and extractability as related to chemical properties of contaminated soils from a vine-growing area [J].
Chaignon, V ;
Sanchez-Neira, I ;
Herrmann, P ;
Jaillard, B ;
Hinsinger, P .
ENVIRONMENTAL POLLUTION, 2003, 123 (02) :229-238
[5]  
Chen HaiFeng Chen HaiFeng, 2007, Acta Pedologica Sinica, V44, P174
[6]   Phytoextraction of cadmium and zinc from a contaminated soil [J].
Ebbs, SD ;
Lasat, MM ;
Brady, DJ ;
Cornish, J ;
Gordon, R ;
Kochian, LV .
JOURNAL OF ENVIRONMENTAL QUALITY, 1997, 26 (05) :1424-1430
[7]   Toxicity of zinc and copper to Brassica species: Implications for phytoremediation [J].
Ebbs, SD ;
Kochian, LV .
JOURNAL OF ENVIRONMENTAL QUALITY, 1997, 26 (03) :776-781
[8]   A comparison of the rhizosphere-based method with DTPA, EDTA, CaCl2, and NaNO3 extraction methods for prediction of bioavailability of metals in soil to barley [J].
Feng, MH ;
Shan, XQ ;
Zhang, SZ ;
Wen, B .
ENVIRONMENTAL POLLUTION, 2005, 137 (02) :231-240
[9]   Comparison of a rhizosphere-based method with other one-step extraction methods for assessing the bioavailability of soil metals to wheat [J].
Feng, MH ;
Shan, XQ ;
Zhang, SZ ;
Wen, B .
CHEMOSPHERE, 2005, 59 (07) :939-949
[10]   Phytoextraction: a cost-effective plant-based technology for the removal of metals from the environment [J].
Garbisu, C ;
Alkorta, I .
BIORESOURCE TECHNOLOGY, 2001, 77 (03) :229-236
123