Journal of Microbiology and Biotechnology

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Serial Degradation of Perchloroethylene by Delftia sp. N6 after Dechlorination Using Fenton's Reagent

  • Lee, Wan-Seok (Environmental Biotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology) ;
  • Kim, Jang-Eok (Department of Agricultural Chemistry, Kyungpook National University) ;
  • Kim, Hee-Sik (Environmental Biotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology) ;
  • Ahn, Chi-Yong (Environmental Biotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology) ;
  • Oh, Hee-Mock (Environmental Biotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology)
  • Published : 2006.11.30
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Abstract

The degradation of perchloroethylene (PCE) was investigated with the serial treatment of biological reaction after dechlorination using Fenton's reagent. The dechlorination of PCE was expressed using $D_m$ (dechlorination value), calculated from ${\Delta}Cl^-mol/{\Delta}PCE$ mol, and was 2.58 with 5 mM of $H_2O_2$ and $Fe^{3+}$. The $150{\mu}M$ of PCE was transformed to $37{\mu}M$ of dichloroacetic acid (DCAA). Biological treatment with Delftia sp. N6 was applied after degradation of PCE by the Fenton reaction. The optical densities indicating cell growth were 0.53/0.10 with/without the Fenton reaction after one day, respectively. The N6 strain degraded 95% of the DCAA produced from PCE by the Fenton reaction within one day. Consequently, it seemed that the serial treatment of a Fenton reaction and biological reaction was effective in the removal of not only PCE, but also DCAA, one of the major metabolites of PCE.

Keywords

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