1988•Unpublished venueOpen access
Mineralization of trichloroethylene by heterotrophic enrichment cultures
E.I. DuPont de Nemours and Co., Savannah River Lab., Aiken, SC (United States), T. J. Phelps, USDOE, Washington, DC (United States) (US), David C. S. White, D Ringelberg, A. T. Mikell, Davidc . White, C Fliermans
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Abstract
Microbial consortia capable of aerobically degrading greater than 99% of 50 mg/l exogenous trichloroethylene (TCE) have been enriched from TCE contaminated subsurface sediments. Concentrations of TCE greater than 300 mg/l were not degraded nor was TCE used as a sole energy source. Successful electron donors for growth included tryptone-yeast extract, methanol, methane or propane. The optimum temperature for growth was 22--37 C and the ph optimum was 7.0--8.1. Utilization of TCE occurred only after apparent microbial growth had ceased. The major end products recovered were hydrochloric acid and carbon dioxide. Minor products included dichloroethylene, vinylidine chloride and possibly chloroform.