Rapid dehalogenation of 2,4,6‐trichlorophenol at alkaline pH by an anaerobic enrichment culture

Monica Turner Togna, D. Kafkewitz, P. M. Armenante

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

An enrichment culture, derived from the anaerobic stage of a two‐step sequential anaerobic‐aerobic reactor system which mineralized 2,4,6‐trichlorophenol, stoichiometrically converted 2,4,6‐trichlorophenol to 4‐chlorophenol. Dehalogenation occurred only in alkaline media (pH 8–9) at concentrations of substrate up to 1 mmol 11. Formate plus acetate or trypticase could serve as electron donors. Neither vitamins nor trace elements were required in a chloride‐free defined medium. The dehalogenating organism was oxygen‐resistant, but was not active in media which were oxidized with respect to resazurin indicator dye. Most probable number counts of the dehalogenating cultures showed that the dehalogenating organisms were present in very small numbers, yet catalysed dehalogenation at rates considerably faster than other dehalogenating organisms described in the literature.

Original languageEnglish (US)
Pages (from-to)113-116
Number of pages4
JournalLetters in Applied Microbiology
Volume20
Issue number2
DOIs
StatePublished - Feb 1995

All Science Journal Classification (ASJC) codes

  • Applied Microbiology and Biotechnology

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