• The Laboratory Column Examination of Stabilization for Agricultural Land Contaminated by Heavy Metals using Sequential Stabilization
  • Park, Dong-Hyeok;Cho, Yun-Chul;Choi, Sang-Il;
  • Department of Environmental Engineering, Kwangwoon University;Graduate School of Green Environment and Energy;Department of Environmental Engineering, Kwangwoon University;
  • 연속 안정화 공법을 이용한 중금속 오염 농경지 토양 안정화 처리를 위한 Column 실험 연구
  • 박동혁;조윤철;최상일;
  • 광운대학교 환경공학과;광운대학교 녹색환경에너지대학원;광운대학교 환경공학과;
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;

This Article

  • 2010; 15(4): 39-45

    Published on Aug 31, 2010

  • Received on May 13, 2010
  • Accepted on Jul 6, 2010

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