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KMID : 0613820030130060970
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Journal of Life Science
2003 Volume.13 No. 6 p.970 ~ p.975
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Evaluation of Biocatalyst and Bioreactor System for the Continuous Treatment of Trichloroethylene
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Lee Eun-Yeol
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Abstract
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Microbial trichloroethylene (TCE) degradation using trickling biofilter (TBF) is a cost-effective treatment method, in which monooxygenase (MO) fortuitously transforms TCE via cometabolism. Simple TBF, however, could not be stably operated for long-term treatment of TCE due to the contradictory characteristics of cometabolism. In this paper, microbial biocatalyst and biofilm reactor system, a two-stage continuous stirred tank reactor (CSTR)/TBF system using Burkholderia cepacia G4 and Methylosinus trichosporium OB3b, are evaluated for the long-term continuous treatment of TCE. The maximum TCE elimination capacities were in the range of 28 and 525 mg TCE/lㆍday. The reactor systems were stably operated for more than 3～12 months.
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KEYWORD
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Burkholderia cepacia, biofilm, cometabolism, Methylosinus trichosporium, trichloroethylene, trickling biofilter
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