重庆大学学报2013，Vol.36Issue(3)：135-140,6.
铬污染土壤浸泡与无水电解电动联合修复实验
Water dipping and electrokinetic jointed remediation of chromium-contaminated soil without water electrolysis
摘要
Abstract
A heavily chromium-contaminated soil with total chromium (TCr) concentration of 2 312 mg/kg is dipped in distilled water seven times before electrokinetic remediation without water electrolysis (EKRWWE). The TCr removal rates of 45% , 67% and 84% are respectively achieved after water-dipping, 85. 4 h EKRWWE and 203 h EKRWWE in order, demonstrating that pre-dipping treatment is able to significantly reduce the load of EKRWWE. In order to prevent electrolysis of water, iron is used as anode and CuSO4 solution is used as cathode electrolyte. Consequently, Fe2+ ion instead of H+ ion and SO42- ion instead of OH- ion migrate into soil and a higher transference number of CrO42- ion is achieved which means a higher efficiency of electrokinetic remediation of chromium-contaminated soil.关键词
污染土壤/电动修复/铬/浸泡Key words
contaminated soil/ electrokinetic remediation/ chromium/ water dipping分类
资源环境引用本文复制引用
李东,熊振,聂杨,黄彦,王力..铬污染土壤浸泡与无水电解电动联合修复实验[J].重庆大学学报,2013,36(3):135-140,6.基金项目
中央高校基本科研业务费资助(CDJXS10241104) （CDJXS10241104）
