Bulletin of Environmental Contamination and Toxicology 2014-07-01

Biodegradation of biphenyl and 2-chlorobiphenyl by a Pseudomonas sp. KM-04 isolated from PCBs-contaminated coal mine soil.

In-Hyun Nam, Chul-Min Chon, Ka-Young Jung, Jae-Gon Kim

Index: Bull. Environ. Contam. Toxicol. 93(1) , 89-94, (2014)

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Abstract

The biphenyl-degrading strain, Pseudomonas sp. KM-04, was isolated from polychlorinated biphenyls-contaminated soil sample obtained from the vicinity of a former coal mine. We herein report that strain KM-04 can use biphenyl as a sole carbon source, and resting cells convert biphenyl to its corresponding metabolic intermediates. Incubation of KM-04 with autoclaved mining-contaminated soil for 10 days in a slurry system reduced the levels of biphenyl and 2-chlorobiphenyl by 98.5 % and 82.3 %, respectively. Furthermore, treatment of a mine-soil microcosm with strain KM-04 for 15 days in a composting system under laboratory conditions reduced the levels of biphenyl and 2-chlorobiphenyl by 87.1 % and 68.7 %, respectively. These results suggest that KM-04 is a potential candidate for the biological removal of biphenyl and its chlorinated derivatives from polychlorinated biphenyl-contaminated mining areas.

Related Compounds

  • Biphenyl
  • pcb 1

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