Influence factors analysis of removing heavy metals from multiple metal-contaminated soils with different extractants

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 aci...

Full description

Saved in:
Bibliographic Details
Published inJournal of Central South University of Technology. Science & technology of mining and metallurgy Vol. 16; no. 1; pp. 108 - 111
Main Authors Xia, Wen-bin, Li, Xin, Gao, Hui, Huang, Bao-rong, Zhang, Hui-zhi, Liu, Yun-guo, Zeng, Guang-ming, Fan, Ting
Format Journal Article
LanguageEnglish
Published Heidelberg Central South University 01.02.2009
Subjects
Engineering
Metallic Materials
heavy metal
extraction
soil remediation
rhamnolipid
Online AccessGet full text

Cover

More Information
Summary: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.
ISSN:1005-9784
1993-0666
DOI:10.1007/s11771-009-0018-2