自然科学版 英文版
自然科学版 英文版
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中南大学学报(英文版)

Journal of Central South University

Vol. 16    No. 1    February 2009

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Influence factors analysis of removing heavy metals from multiple metal-contaminated soils with different extractants
XIA Wen-bin(夏文斌), LI Xin(李 欣), GAO Hui(高 慧), HUANG Bao-rong(黄宝荣),
ZHANG Hui-zhi(张慧智), LIU Yun-guo(刘云国), ZENG Guang-ming(曾光明), FAN Ting(樊 霆)

College of Environmental Science and Engineering, Hunan University, Changsha 410082, China

Abstract: Some key factors on the heavy metals removal efficiencies were studied when soil washing technology was used in the remediation of soils contaminated by multiple heavy metals. The results show that the dissolubilities of Cu and Zn are promoted by humic acids, but Pb and Cd are inhibited by humic acids; heavy metals in the clay are more difficult to be extracted than silt; the strong acidic soils can cause the protonation of EDTA and weaken its extracting ability; EDTA is effective for extracting Pb and Cd, while oxalate (OX) is effective for extracting Cu and Zn; and biosurfactant can be used as additive to improve the removal of some particular heavy metals.

 

Key words: heavy metal; soil remediation; extraction; rhamnolipid

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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