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http://dx.doi.org/10.12925/jkocs.2004.21.4.7

Clean Up of Polycyclic Aromatic Hydrocarbon Contaminated Soil by Ethanol Washing  

Lee, Byung-Dae (Division of Health, Uiduk University)
Lee, Jin-Shik (Division of Food Service Industry, Uiduk University)
Kim, Yeoung-Chan (Department of Advanced Materials Engineering, Joongbu University)
Publication Information
Journal of the Korean Applied Science and Technology / v.21, no.4, 2004 , pp. 313-319 More about this Journal
Abstract
Ethanol washing with distillation as a cleanup process of polycyclic aromatic hydrocarbon(PAH)-contaminated soil was investigated in this study. A multistage ethanol washing with distillation process was applied to three different types of soil, i.e., sandy soil, alluvial soil, and clay with the initial concentration of benzo(a)pyrene 10 mg/kg, benz(a)anthracene 250 mg/kg, and pyrene 100 mg/kg soil. Ethanol was selected as washing solvent because of its high PAH removal efficiency, low cost, and non-toxicity comparing to the other solvent such as isopropyl alcohol and sodium dodecyl sulfate. The satisfactory results (i.e. lower than benzo(a)pyrene 1 mg/kg, pyrene 10 mg/kg, benz(a)anthracene 25 mg/kg, which are the Canada or the Netherlands soil standard) for three types of soils were obtained by at most five-six times washing. It was suggested that organic content in soil decreased the removal efficiency by ethanol washing.
Keywords
benz(a)anthracene; benzo(a)pyrene; pyrene; contaminated soil; solvent washing; soil remediation;
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