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Applied and Environmental Microbiology, October 1999, p. 4357-4362, Vol. 65, No. 10
0099-2240/99/$04.00+0

Biodegradation of Pentachlorophenol in a Continuous Anaerobic Reactor Augmented with Desulfitobacterium frappieri PCP-1dagger

B. Tartakovsky,1 M.-J. Levesque,1 R. Dumortier,1 R. Beaudet,2 and S. R. Guiot1,*

Biotechnology Research Institute, NRC, Montreal, Quebec, Canada H4P 2A2,1 and Institut Armand-Frappier, INRS, Laval, Quebec, Canada H7N 4Z32

Received 3 May 1999/Accepted 21 July 1999

In this work, a strain of anaerobic pentachlorophenol (PCP) degrader, Desulfitobacterium frappieri PCP-1, was used to augment a mixed bacterial community of an anaerobic upflow sludge bed reactor degrading PCP. To estimate the efficiency of augmentation, the population of PCP-1 in the reactor was enumerated by a competitive PCR technique. The PCP-1 strain appeared to compete well with other microorganisms of the mixed bacterial community, with its population increasing from 106 to 1010 cells/g of volatile suspended solids within a period of 70 days. Proliferation of strain PCP-1 allowed for a substantial increase of the volumetric PCP load from 5 to 80 mg/liter of reaction volume/day. A PCP removal efficiency of 99% and a dechlorination efficiency of not less than 90.5% were observed throughout the experiment, with 3-Cl-phenol and phenol being observable dechlorination intermediates.

* Corresponding author. Mailing address: 6100 Royalmount Ave., Montreal, Quebec H4P 2R2, Canada. Phone: (514) 496-6181. Fax: (514) 496-6265. E-mail: Serge.Guiot{at}nrc.ca.

dagger This is NRC paper number 43272.

Applied and Environmental Microbiology, October 1999, p. 4357-4362, Vol. 65, No. 10
0099-2240/99/$04.00+0


This article has been cited by other articles:

  • Lanthier, M., Juteau, P., Lepine, F., Beaudet, R., Villemur, R. (2005). Desulfitobacterium hafniense Is Present in a High Proportion within the Biofilms of a High-Performance Pentachlorophenol-Degrading, Methanogenic Fixed-Film Reactor. Appl. Environ. Microbiol. 71: 1058-1065 [Abstract] [Full Text]  
  • Lanthier, M., Tartakovsky, B., Villemur, R., DeLuca, G., Guiot, S. R. (2002). Microstructure of Anaerobic Granules Bioaugmented with Desulfitobacterium frappieri PCP-1. Appl. Environ. Microbiol. 68: 4035-4043 [Abstract] [Full Text]  


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