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KMID : 1024519970060050481
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Journal of the Environmental Sciences
1997 Volume.6 No. 5 p.481 ~ p.488
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Biodegradation and Kinetics of Trichloroethylene by Micrococcus sp. MS-64K
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Kim Jong-Soo
Park Geun-Tae
Son Hong-Joo
Kim Jeon-Ki
Lee Jong-Kun
Lee Sang-Joon
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Abstract
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Microorganisms capable of degrading trlchloroethylene(TCEI using phenol as a induction substrate were isolated from industrial effluents and soil. The strain MS-64K which had the highest blodegradablllty was identified as the genus Micrococcus. The optimal conditions of medium for the growth and blodegadatlon of trlchloroethylene were observed as follows; the initial pH 7.0, trlchloroethylene 1, 000ppm as the carbon source, 0.2% , as the nitrogen source. respectively. Lag period and degradation time on optimal medium were shorter than those on Isolation medium. Growth on the optimal medium was Increased. Addition of 0.1% Triton X-100 Increased the growth rate of Micrococcus sp. MS-64K, but degradation was equal to optimal medium. Trlchloroethylene degradation by Micrococcus sp. MS-64K was shown to fit logarithmic model when the compound was added at initial concentration of 1, 000ppm.
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KEYWORD
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Trichloroethylene, Micrococcus sp., biodegradation, logarithmic model
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