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Evaluation of Processing Fluids on Electrokinetic remediation of Cu, Pb, As-contaminated soil  

Park, Geun-Yong (Department of Environmental Engineering, Kumoh National Institute of Technology)
Kim, Do-Hyung (Department of Environmental Engineering, Kumoh National Institute of Technology)
Baek, Ki-Tae (Department of Environmental Engineering, Kumoh National Institute of Technology)
Publication Information
Journal of Soil and Groundwater Environment / v.15, no.5, 2010 , pp. 1-7 More about this Journal
Abstract
Electrokinetic technology was applied to remediate Cu, Pb and As-contaminated paddy soil. Removal of metal is highly dependent on the processing fluid during electrokinetic treatment. Tap water, NaOH, $HNO_3$, $Na_2EDTA$, and citric acid were evaluated as the processing fluids to enhance metal removal. Cu and Pb were transported toward cathode, however, it did not removed from soil section, while 56.6% of As was removed at a acidic condition. The strong acidic condition with nitric acid as a processing fluid enhanced the desoprtion of As from soil surface. However, longer operation time is needed to get the higher removal of Cu and Pb, and the acidification of soil after electrokinetic treatment should be solved.
Keywords
Electrokinetic remediation; Multi-metal contaminated soil; Processing fluids; pH control;
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Times Cited By KSCI : 5  (Citation Analysis)
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