Rapid degradation of halogenated hydrocarbons by methanotrophic bacteria
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United States of America Patent
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Mar 23, 1993
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app pub date -
Dec 20, 1991
filing date -
Nov 17, 1988
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Abstract
A method is disclosed for degradation of a halogenated hydrocarbon compound such as trichloroethylene (TCE) which utilizes a soluble methane monooxygenase or a bacterium comprising the monooxygenase. Methylosinus trichosporium OB3b is a soluble methane monooxygenase-producing bacterium which when cultivated by continuous culturing comprising exposing the bacterium to a continuous-flow gas mixture of air and methane in a ratio of about 25:1-1:20, respectively. Methylosinus trichosporium OB3b is capable of degrading TCE at rates from about 500-10,000 micromoles per hour per gram cells. The present method is useful to degrade halogenated hydrocarbon compounds such as TCE at initial concentrations up to 10,000 micromoles/l.
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