Electrolyte conditioning-enhanced electrokinetic remediation of arsenic-contaminated mine tailing

被引：92
|
作者：
Baek, Kitae [1 ]
Kim, Do-Hyung [1 ]
Park, Sung-Woo [1 ]
Ryu, Byung-Gon [1 ]
Bajargal, Tserennyam [1 ]
Yang, Jung-Seok [2 ]
机构：
[1] Kumoh Natl Inst Technol, Dept Environm Engn, Gumi 730701, Gyeongbuk, South Korea
[2] Korea Inst Sci & Technol, Gangneung Inst, Kangnung 210340, Gangwon Do, South Korea
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 161卷 / 01期
关键词：
Anolyte conditioning; Catholyte conditioning; Enhanced electrokinetics; Arsenic remediation; Mine tailing; SOIL; REMOVAL; IRON; EXTRACTION; COPPER; FIELD; ACID; PH;
D O I：
10.1016/j.jhazmat.2008.03.127
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Feasibility of electrolyte conditioning with strong acidic or alkaline solution on electrokinetic remediation of arsenic-contaminated mine tailing was investigated in the laboratory. The mine tailing contained calcium oxide of more than 50%. At alkaline condition, arsenic was precipitated with calcium, and formed calcium arsenate which is very stable solid. Catholyte conditioning with strong acidic solution and anolyte conditioning with strong alkaline solution showed similar efficiency to remove arsenic. At 4mAcm(-2) of current density, the removal efficiency of arsenic was 62% after 28 days operation with catholyte conditioning with 0.1 M nitric acid. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：457 / 462
页数：6
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