Stimulation of microbial para-dechlorination of polychlorinated

Details Stimulation of microbial para-dechlorination of polychlorinated Stimulation of microbial para-dechlorination of polychlorinated

1995-06-02

1996-07-30

Hruskoci, Peter A.

Liquid purification or separation

Processes

Treatment by living organism

210612, 210614, 210909, 435244, 4352625, C12N 138, C02F 300, B09B 300

Patent

active

055408389

ABSTRACT:
A method for stimulating microbial dechlorination of the unflanked para-chlorine substituent of PCBs having one or two unflanked para-chlorine substituents in an active PCB-contaminated sediment having a population of microorganisms capable of para-dechlorinating PCBs involves incubation of the sediment with a fluorochlorobiphenyl compound such as 2,6-difluoro-4-chlorobiphenyl that has a para-chlorine at position 4, hydrogens on positions 3 and 5, and fluorines on positions 2 and 6, for a time and under conditions sufficient to decrease the levels of PCBs containing unflanked para-chlorines.

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"Environmental Dechlorination of PCBs", JF Brown, Jr., et al., Env. Tox. & Chemistry, vol. 6, pp. 579-593, Jan. 1987.
"Reductive Dehalogenations of Halobenzoates by Anaerobic Lake Sediment Microorganism", A. Horowitz, et al., Applied and Env. Microbiology, May 1983, pp. 1459-1465.
"Rapid Assay for Screening and Characterizing Micoroorganisms for the Ability to Degrade Polychlorinated Biphenyls", DL Bedard, et al., Applied and Environmental Microbiology, Apr. 1986, p. 761-768.
U.S. Pat. Application, Ser. No. 08/376,485, filed Jan. 20, 1995, Allowed Jun. 27, 1995.

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