For an effcient remediation of heavy metals(Cd, Cu, Zn) contaminated soil(S-1) in open burning and open detonation(OBOD) site and artificially contaminated soil(S-2) with reagent of Cd(NO3), Cu(NO3) and Zn(NO3), a soil washing test was performed with ...
For an effcient remediation of heavy metals(Cd, Cu, Zn) contaminated soil(S-1) in open burning and open detonation(OBOD) site and artificially contaminated soil(S-2) with reagent of Cd(NO3), Cu(NO3) and Zn(NO3), a soil washing test was performed with mineral acid, organic acid, chelating agent, and chloride. As a result of determining extraction efficiency by various extractants, 0.5 M HC1 had the highest extraction efficiency of Cd, Cu, and Zn from OBOD site soil(S-1) and artificially contaminated soil(S-2), showing 92.16, 89.14, and 56.31%(S-1), 95.12, 90.49, 83.24%(S-2), respectively. As a result of examining extraction efficiency by presence form of heavy metals, presence form of heavy metal was confirmed to be one of important influential factors along with extraction efficiency of detrital content in selecting a extractant. Also, due to a content increase of specific bonding forms of heavy metals observed in residual soils after extraction, two-stage repeated soil washing and stabilization of residual soils are needed for exchangeable forms having relatively easy mobilities.