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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 13    No. 6    December 2003

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Electrokinetics removal of lead from lead-contaminated red soils
LIU Yun-guo(刘云国), LI Xin(李 欣), ZENG Guang-ming(曾光明),  
HUANG Bao-rong(黄宝荣), ZHANG Hui-zhi(张慧智)

Department of Environmental Science & Engineering,
Hunan University, Changsha 410082, China

Abstract:Ex-situ electroremediation tests were conducted on the lead-contaminated red soils to find out the optimum condition for the most efficient removal of lead pollution from the red soil, and to examine the relation of the pH of the soil with the electroremediation efficiency. The results show that the electroremediation technology is efficient to remedy Pb contaminated red soils, and the removal efficiency can be enhanced by controlling pH value in the cathode reservoir with HNO3. The average removal efficiency of Pb is enhanced from 24.5% to 79.5%, and the energy consumption reaches 285kW·h per m3 red soil.

 

Key words: electroremediation; red soil; lead pollution

ISSN 1672-7029
CN 43-1423/U

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