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The Laboratory Column Examination of Stabilization for Agricultural Land Contaminated by Heavy Metals using Sequential Stabilization  

Park, Dong-Hyeok (Department of Environmental Engineering, Kwangwoon University)
Cho, Yun-Chul (Graduate School of Green Environment and Energy)
Choi, Sang-Il (Department of Environmental Engineering, Kwangwoon University)
Publication Information
Journal of Soil and Groundwater Environment / v.15, no.4, 2010 , pp. 39-45 More about this Journal
Abstract
In order to treat paddy soils contaminated by Pb, Cd, and As near the abandoned mine, $H_2PO_4$ was used for stabilization of Pb ($PO_4$/Pb mole ratio of 2/1). In addition, $CaCO_3$ and $FeSO_4$ were used as stabilizers for treating Cd and As (2% w/w), respectively. Leaching tests were conducted with artificial rain in the column to assess the heavy metal stabilization efficiency. The mass of heavy metals in the effluents passed through the columns were analyzed. The remaining heavy metals in the soils were also analyzed as Korean soil standard method, phytoavailability test and sequential extraction test. Lead in the effluent was not detected when $H_2PO_4$ was used as a stabilizer. This result suggests that $H_2PO_4$ is efficient for Pb stabilization. In addition results of sequential extraction scheme suggest that heavy metals are present as residual forms which is not easily extracted.
Keywords
Mobility; Heavy metal; Phytoavailability; Stabilization;
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Times Cited By KSCI : 2  (Citation Analysis)
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