Enhanced Electrokinetic Remediation of Copper-Contaminated Soils near a Mine Tailing Using the Approaching-Anode Technique

被引：13
作者：
Cai, Z. P. [1 ,2 ]
Chen, D. R. [1 ]
Fang, Z. Q. [1 ]
Xu, M. Q. [3 ,4 ]
Li, W. S. [3 ,4 ]
机构：
[1] S China Normal Univ, Sch Chem & Environm, Guangzhou 510006, Guangdong, Peoples R China
[2] Guangdong Polytech Environm Protect Engn, Foshan 528216, Peoples R China
[3] S China Normal Univ, Sch Chem & Environm, Engn Res Ctr MTEES,Res Ctr BMET Guangdong Prov, Minist Educ,Key Lab ETESPG GHEI,Engn Lab OFMHEB G, Guangzhou 510006, Guangdong, Peoples R China
[4] S China Normal Univ, Innovat Platform ITBMD Guangzhou Municipal, Guangzhou 510006, Guangdong, Peoples R China
来源：
JOURNAL OF ENVIRONMENTAL ENGINEERING | 2016年 / 142卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Electrokinetic remediation; Approaching anodes (AAs); Cu contamination; Soil remediation; Mechanism; REMOVAL; LEAD; CADMIUM; ZN; CU;
D O I：
10.1061/(ASCE)EE.1943-7870.0001017
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The soils contaminated by copper (Cu) near a mine tailing are remedied via an enhanced electrokinetical (EK) method utilizing approaching anodes (AAs). The variations in the removal efficiency and soil pH as a function of treatment time are determined. The maximum Cu removal efficiency is as high as 61.98% under a voltage gradient of 1V/cm for 48h; in contrast to 38.97% when the conventional electrokinetic remediation with one fixed anode (FA) is employed. Several anodes were inserted as AAs in the treated soil. They were switched in turn from the anode towards the cathode allowing for high H+ ions concentrations and high redox potentials to quickly migrate towards the cathode. As a result, the soil remediation is accelerated. The mechanism of Cu electromigration behavior in soils during an enhanced EK method is described as the elution in an electrokinetically-driven chromatogram. (C) 2015 American Society of Civil Engineers.
引用
收藏
页数：6
相关论文
共 25 条
[1]   Use of cation-exchange membranes for simultaneous recovery of lead and EDTA during electrokinetic extraction [J].
Amrate, S ;
Akretche, DE ;
Innocent, C ;
Seta, P .
DESALINATION, 2006, 193 (1-3) :405-410
[2]   Effects of redox potential and pH value on the release of rare earth elements from soil [J].
Cao, XD ;
Chen, Y ;
Wang, XR ;
Deng, XH .
CHEMOSPHERE, 2001, 44 (04) :655-661
[3]   Nickel(II) and zinc(II) removal using Amberlite IR-120 resin: Ion exchange equilibrium and kinetics [J].
Franco, Pietro Escobar ;
Veit, Marcia Teresinha ;
Borba, Carlos Eduardo ;
Goncalves, Gilberto da Cunha ;
Fagundes-Klen, Marcia Regina ;
Bergamasco, Rosangela ;
da Silva, Edson Antonio ;
Ramos Suzaki, Pedro Yahico .
CHEMICAL ENGINEERING JOURNAL, 2013, 221 :426-435
[4]   Pilot-Scale Decontamination of Small-Arms Shooting Range Soil Polluted with Copper, Lead, Antimony, and Zinc by Acid and Saline Leaching [J].
Guemiza, Karima ;
Mercier, Guy ;
Blais, Jean-Francois .
JOURNAL OF ENVIRONMENTAL ENGINEERING, 2015, 141 (01)
[5]   Electrokinetic remediation of copper mine tailings - Implementing bipolar electrodes [J].
Hansen, Henrik K. ;
Rojo, Adrian ;
Ottosen, Lisbeth M. .
ELECTROCHIMICA ACTA, 2007, 52 (10) :3355-3359
[6]   Use of Hydraulic Pressure-Improved Electrokinetic Technique to Enhance the Efficiencies of the Remediation of PCP-Contaminated Soil [J].
Huang, Jui-Yuan ;
Liao, Wing-Ping ;
Lai, Siou-Mei ;
Yang, Renbo .
JOURNAL OF ENVIRONMENTAL ENGINEERING, 2013, 139 (09) :1213-1221
[7]   Electrodialytic remediation of harbour sediment in suspension-Evaluation of effects induced by changes in stirring velocity and current density on heavy metal removal and pH [J].
Kirkelund, Gunvor M. ;
Ottosen, Lisbeth M. ;
Villumsen, Arne .
JOURNAL OF HAZARDOUS MATERIALS, 2009, 169 (1-3) :685-690
[8]   Near-anode focusing phenomenon caused by the high anolyte concentration in the electrokinetic remediation of chromium(VI)-contaminated soil [J].
Li, Dong ;
Xiong, Zhen ;
Nie, Yang ;
Niu, Yuan-Yuan ;
Wang, Li ;
Liu, Yuan-Yuan .
JOURNAL OF HAZARDOUS MATERIALS, 2012, 229 :282-291
[9]   Comparison of approaching and fixed anodes for avoiding the 'focusing' effect during electrokinetic remediation of chromium-contaminated soil [J].
Li, Gang ;
Guo, Shuhai ;
Li, Shucai ;
Zhang, Lingyan ;
Wang, Shanshan .
CHEMICAL ENGINEERING JOURNAL, 2012, 203 :231-238
[10]   A review of soil heavy metal pollution from mines in China: Pollution and health risk assessment [J].
Li, Zhiyuan ;
Ma, Zongwei ;
van der Kuijp, Tsering Jan ;
Yuan, Zengwei ;
Huang, Lei .
SCIENCE OF THE TOTAL ENVIRONMENT, 2014, 468 :843-853
123