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Applied and Environmental Microbiology, November 1999, p. 5169-5172, Vol. 65, No. 11
0099-2240/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.

Reductive Dehalogenation and Conversion of 2-Chlorophenol to 3-Chlorobenzoate in a Methanogenic Sediment Community: Implications for Predicting the Environmental Fate of Chlorinated Pollutants

Jennifer G. Becker,* David A. Stahl, and Bruce E. Rittmann

Department of Civil Engineering, Northwestern University, Evanston, Illinois 60208

Received 17 May 1999/Accepted 31 August 1999

Biotransformation of 2-chlorophenol by a methanogenic sediment community resulted in the transient accumulation of phenol and benzoate. 3-Chlorobenzoate was a more persistent product of 2-chlorophenol metabolism. The anaerobic biotransformation of phenol to benzoate presumably occurred via para-carboxylation and dehydroxylation reactions, which may also explain the observed conversion of 2-chlorophenol to 3-chlorobenzoate.

* Corresponding author. Present address: Department of Civil and Environmental Engineering, Lehigh University, 13 E. Packer Ave., Bethlehem, PA 18015-3176. Phone: (610) 758-3543. Fax: (610) 758-6405. E-mail: jgb4{at}lehigh.edu.

Applied and Environmental Microbiology, November 1999, p. 5169-5172, Vol. 65, No. 11
0099-2240/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.


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