Evaluation of soil washing process with carboxymethyl-β-cyclodextrin and carboxymethyl chitosan for recovery of PAHs/heavy metals/fluorine from metallurgic plant...
Publication Date
2014-08-01Author
Ye, Mao
Sun, Mingming
Kengara, Fredrick O
Wang, Jingting
Ni, Ni
Wang, Li
Song, Yang
Yang, Xinglun
Li, Huixin
Hu, Feng
Jiang, Xin
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Show full item recordAbstract/ Overview
Abstract Polycyclic aromatic hydrocarbons (PAHs)/heavy metals/fluorine (F) mixed-
contaminated sites caused by abandoned metallurgic plants are receiving wide attention. To
address the associated environmental problems, this study was initiated to investigate the
feasibility of using carboxymethyl-β-cyclodextrin (CMCD) and carboxymethyl chitosan
(CMC) solution to enhance ex situ soil washing for extracting mixed contaminants. Further,
Tenax extraction method was combined with a first-three-compartment model to evaluate the
environmental risk of residual PAHs in washed soil. In addition, the redistribution of heavy
metals/F after decontamination was also estimated using a sequential extraction procedure.
Three successive washing cycles using 50 g/L CMCD and 5 g/L CMC solution were effective
to remove 94.3% of total PAHs, 93.2% of Pb, 85.8% of Cd, 93.4% of Cr, 83.2% of Ni and …
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- Department of Chemistry [326]