Sequential anaerobic degradation of 2,4-dichlorophenol in freshwater sediments.

Applied and Environmental Microbiology
X Zhang, J Wiegel

Abstract

2,4-Dichlorophenol (2,4-DCP) was anaerobically degraded 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 CO2; 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 which catalyzed only the dechlorination of 2,4-DCP, the carboxylation of phenol, and the degradation of benzoate, respectively. Whereas the dechlorination of 2,4-DCP was not inhibited by H2, the dechlorination of 4-CP, and the transformation of phenol and benzoate were. Low concentrations of 4-CP inhibited phenol and benzoate degradation. Transformation rates and maximum concentrations allowing degradation were determined in both freshly collected sediments and in adapted samples: at 31 degrees C, which was the optimal temperature for the dechlorination, the average adaptation time for 2,4-DCP, 4-CP, phenol, and benzoate transformations were 7, 37, 11 and ...Continue Reading

References

Oct 1, 1989·Applied and Environmental Microbiology·G W KohringJ Wiegel
Feb 1, 1989·Applied and Environmental Microbiology·G W KohringJ Wiegel
May 1, 1987·Applied and Environmental Microbiology·J G SteiertR L Crawford
Oct 1, 1986·Applied and Environmental Microbiology·S A Gibson, J M Suflita
Dec 1, 1984·The Journal of Applied Bacteriology·R Sleat, J P Robinson
Feb 1, 1984·Applied and Environmental Microbiology·S A Boyd, D R Shelton
May 1, 1981·Journal of Bacteriology·D K ChatterjeeA M Chakrabarty
May 1, 1983·Applied and Environmental Microbiology·J M SuflitaJ M Tiedje
Jul 1, 1988·Applied and Environmental Microbiology·J Dolfing, J M Tiedje
Jun 1, 1989·Applied and Environmental Microbiology·B R GenthnerP H Pritchard
Jun 1, 1989·Applied and Environmental Microbiology·B R GenthnerP H Pritchard
Oct 1, 1986·Environmental Science & Technology·H M HwangR F Lee
Mar 1, 1986·Microbial Ecology·H SahmS M Schoberth

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Citations

Sep 1, 1992·FEMS Microbiology Reviews·M M Häggblom
Aug 1, 1995·Applied Microbiology and Biotechnology·S M Liu, W J Jones
Mar 4, 2005·Environmental Health Perspectives·Jennifer G BeckerDavid A Stahl
Apr 6, 2006·Biotechnology and Bioengineering·Claudio Garibay-OrijelHéctor Mario Poggi-Varaldo
Apr 5, 2008·Canadian Journal of Microbiology·Boguslaw LupaJuergen Wiegel
Apr 1, 1997·Applied Biochemistry and Biotechnology·P AntoineP Thonart
Oct 20, 2009·Archives of Microbiology·Sirko Schmeling, Georg Fuchs
Oct 1, 1995·Canadian Journal of Microbiology·P JuteauJ G Bisaillon
Apr 26, 2000·FEMS Microbiology Ecology·J Wiegel, Q Wu
Jan 17, 2012·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Debolina Basu, Shyam R Asolekar
Apr 2, 2008·Annals of the New York Academy of Sciences·Georg Fuchs
Jul 2, 2008·Environmental Science & Technology·J Cameron Thrash, John D Coates
Sep 1, 1992·Applied and Environmental Microbiology·T Madsen, D Licht
Jan 1, 1992·Applied and Environmental Microbiology·H V HendriksenB K Ahring
Feb 1, 1992·Applied and Environmental Microbiology·T Madsen, H Aamand
Jul 1, 1992·Applied and Environmental Microbiology·D K NicholsonD C Peek
Jan 1, 1991·Applied and Environmental Microbiology·A S AllardA H Neilson
Feb 1, 1993·Applied and Environmental Microbiology·W M WuJ G Zeikus
Sep 1, 1992·Microbiological Reviews·W W Mohn, J M Tiedje
Sep 1, 1991·Applied and Environmental Microbiology·T Madsen, J Aamand
Mar 1, 1996·Applied and Environmental Microbiology·F LepineR Villemur
Dec 1, 1994·Microbiological Reviews·S Fetzner, F Lingens
Nov 1, 1994·Applied and Environmental Microbiology·X Zhang, J Wiegel

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