哈尔滨工业大学学报（英文版）2007，Vol.14Issue(3)：385-388,4.
Study on electrokinetic remediation of cadmium contaminated soils
Study on electrokinetic remediation of cadmium contaminated soils
摘要
Abstract
Kaolinite from a lead-zinc mining district, which was spiked with cadmium, has been treated by electrokinetics to investigate effects of treatment time and applied voltage gradient. The results showed that the increased test duration had induced a higher removal rate of cadmium. Being treated for 7 days, cadmium was removed from kaolinite dramatically. It was also found that higher removal rate happened when a higher voltage gradient was applied and cadmium accumulated near the cathode because pH increased. Increase of pH near the cathode caused accumulation of cadmium. Moreover, it was observed that cation exchange membrane which was placed between kaolinite and cathode could make pH lower than the initial value and avoid the higher pH near the cathode. As a result, the high concentration accumulation of cadmium near the cathode was avoided.关键词
electrokinetic remediation/cadmium/kaoliniteKey words
electrokinetic remediation/cadmium/kaolinite分类
资源环境引用本文复制引用
SHI Wen-xin,CUI Chong-wei,YU Shui-li,FENG Wei-ming..Study on electrokinetic remediation of cadmium contaminated soils[J].哈尔滨工业大学学报（英文版）,2007,14(3):385-388,4.基金项目
Sponsored by Excellent Younger Teacher Awards Project of University( Grant No. 20010170) and the Scientific Research Foundation of Harbin Institute of Technology( Grant No. HIT. 2002.68 ). （ Grant No. 20010170）
