Removal of diesel hydrocarbons by microwave-enhanced soil vapor extraction (Focused on Loss and Kinetic constant for Diesel Hydrocarbons)

  • 김종운 (한국외국어대학교 환경학과) ;
  • 박갑성 (한국외국어대학교 환경학과)
  • Published : 2004.04.01

Abstract

In this paper, removal of diesel hydrocarbons (C$_{10}$-C$_{22}$) for dry and moist soil was investigated so that microwave-enhanced soil vapor extraction(SVE) reduced soil treatment time and raised remediation efficiency. Kinetic constants of diesel hydrocarbons with microwave energy were 7 times on dry soil and 1580 times on moist soil as much as those of SVE process without microwave energy. The diesel removals were 67.7~78.4% for $C_{10}$ and $C_{12}$, and 0~18.5% for $C_{14}$~C$_{22}$ for dry and moist soil with SVE process only. On the other hand, dry soil with microwave-enhanced SVE process showed 89.3~99.4% removal for $C_{10}$ and $C_{12}$ and 35.6~67.0% for hydrocarbons over $C_{14}$. All hydrocarbons(C$_{10}$~C$_{22}$) studied were significantly removed (93.6~99.8%) for moist soil with microwave-enhanced SVE process. Almost all diesel hydrocarbons were usually considered as semi-volatile compounds(SVOCs). Microwave-enhanced SVE process might have a great potential for remediation of soils contaminated with SVOCs.OCs.

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