Microbial metabolism of chlorobiphenyls

Parsons, John R.; Veerkamp, William; Hutzinger, O.

doi:10.1080/02772248309357011

Cited by 16 publications

(2 citation statements)

References 55 publications

(46 reference statements)

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“…The degradation of chlorinated biphenyls has been reviewed by Furukawa (1982), Parsons et al (1983) and Safe (1984). The ability to degrade polychlorinated biphenyls (PCBs) aerobically is found in several genera of both Gram positive and Gram negative bacteria (Ohmori et al 1973;Walia et al 1988;Untermann et al 1988).…”

Section: Degradation Of Halogenated Biphenylsmentioning

confidence: 99%

Degradation of halogenated aromatic compounds

1990

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Due to their persistence, haloaromatics are compounds of environmental concern. Aerobically, bacteria degrade these compounds by mono- or dioxygenation of the aromatic ring. The common intermediate of these reactions is (halo)catechol. Halocatechol is cleaved either intradiol (ortho-cleavage) or extradiol (meta-cleavage). In contrast to ortho-cleavage, meta-cleavage of halocatechols yields toxic metabolites. Dehalogenation may occur fortuitously during oxygenation. Specific dehalogenation of aromatic compounds is performed by hydroxylases, in which the halo-substituent is replaced by a hydroxyl group. During reductive dehalogenation, haloaromatic compounds may act as electron-acceptors. Herewith, the halosubstituent is replaced by a hydrogen atom.

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Section: Degradation Of Halogenated Biphenylsmentioning

confidence: 99%

Degradation of halogenated aromatic compounds

1990

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“…The development of a biotechnological process might be advantageous if the hazardous compounds would be degraded by microbial activities to harmless fragments. Several studies dealing with the biodegradation of PCB by microorganisms have been published (CLARK et al, 1979;FURUKAWA et al, 1979;PARSONS et al, 1983;BEDARD et al, 1986;BOPP, 1986;BEDARD and HABERL, 1990;VINEY amj BEWLEY, 1990). PE'TTIGREW et al, (1990) demonstrated that the biodegradative capacity of interacting populations of bacteria must be considered in order to gain a better understanding of PCB degradation in the environment.…”

Section: Introductionmentioning

confidence: 99%

Microbial degradation of polychlorinated biphenyls in contaminated soil

et al. 1993

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The potential of microbial degradation of PCB in contaminated actual site soil was investigated by incubation in percolation columns for 10 months. The addition of traces of mineral salts and nutrients resulted in a significant increase of the degradation of PCB congeners up to 5 Cl-atoms caused by the naturally occurring bacteria in the soil matrix. If only tap water was recycled the degree of PCB degradation was negligible.

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