Ezperimental Research on Remediation of Soil Contaminated by Heavy Metal
The electro-remediation method of soil contaminated by heavy metal was researched by means of experiment in this paper, and the characteristic and mechanism for distribution and migration of heavy metal under an electric field were analyzed too. The experimental results indicated that the concentrations of heavy metal changed obviously in soil in electric field and most of the heavy metal pollutant could be enriched and removed in the vicinity of electrodes. And the pH value, etc. in soil were the main factors which affected the effect of electro-remediation. The removal efficiency of cadmium was 90.6% when the experimental voltage was 0.67 V/cm. The pH value closing to the positive electrode changed from 6.9 at initial stage to 2.7 at later stage, and the pH value was on the contrary closing to the negative electrode, namely, changed from 7.1 at the beginning to 10.9 at the last. In addition, the temperature nearby electrodes changed during the process of the electro-remediation.
soil pollution heavy metal electro-remediation influence factor
HU Hongtao CHENG Jinping
School of Chemical Engineering,Shanghai Institute of Technology,Shanghai 200235,China School of Environmental Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China
国际会议
2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)
上海
英文
2001-2004
2009-06-02（万方平台首次上网日期，不代表论文的发表时间）