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RECORD NUMBER: 44 OF 50

OLS Field Name OLS Field Data
Main Title Sequential Anaerobic Degradation of 2,4-Dichlorophenol in Freshwater Sediments.
Author Zhang, X. ; Wiegel, J. ;
CORP Author Georgia Univ., Athens.;Environmental Research Lab., Athens, GA. Office of Research and Development.;Department of Energy, Washington, DC.
Publisher cApr 90
Year Published 1990
Report Number DE-FG09-86ER-13614, EPA-R-812638; EPA/600/J-94/294;
Stock Number PB94-190485
Additional Subjects Anaerobic bacteria ; Chlorohydrocarbons ; Water pollution ; Biodegradation ; Freshwater ; Sediments ; Aquatic bacteria ; Phenols ; Halohydrocarbons ; Dehalogenation ; Reprints ; 2-4-DCP(2-4-Dichlorophenol) ; Phenols/2-4-Dichloro
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NTIS  PB94-190485 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 11/11/1994
Collation 10p
Abstract
2,4-Dichlorophenol (2,4-DCP) was degraded anaerobically in freshwater lake sediments. From observed intermediates in incubated sediment samples and from enrichment cultures, the following sequence of transformations was postulated. 2,4-DCP is dechlorinated to 4-chlorophenol (4-CP), 4-CP is dechlorinated to phenol, phenol is carboxylated to benzoate, and benzoate is degraded via acetate to methane and carbon carbon dioxide. At least five different organisms are involved sequentially. The rate-limiting step was the transformation of 4-CP to phenol. Sediment-free enrichment cultures were obtained that catalyzed only the dechlorination of 2,4-DCP, the carboxylation of phenols, and the degradation of benzoate, respectively.