Detoxification of vinyl chloride to ethene coupled to growth of an anaerobic bacterium

Jianzhong He, Kirsti M. Ritalahti, Kun-Lin Yang, Stephen S. Koenigsberg and Frank E. Löffler ()
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Jianzhong He: Georgia Institute of Technology
Kirsti M. Ritalahti: Georgia Institute of Technology
Kun-Lin Yang: Georgia Institute of Technology
Stephen S. Koenigsberg: Regenesis Bioremediation Products
Frank E. Löffler: Georgia Institute of Technology

Nature, 2003, vol. 424, issue 6944, 62-65

Abstract: Abstract Tetrachloroethene (PCE) and trichloroethene (TCE) are ideal solvents for numerous applications, and their widespread use makes them prominent groundwater pollutants. Even more troubling, natural biotic and abiotic processes acting on these solvents lead to the accumulation of toxic intermediates (such as dichloroethenes) and carcinogenic intermediates (such as vinyl chloride)1,2,3,4. Vinyl chloride was found in at least 496 of the 1,430 National Priorities List sites identified by the US Environmental Protection Agency, and its precursors PCE and TCE are present in at least 771 and 852 of these sites, respectively5. Here we describe an unusual, strictly anaerobic bacterium that destroys dichloroethenes and vinyl chloride as part of its energy metabolism, generating environmentally benign products (biomass, ethene and inorganic chloride). This organism might be useful for cleaning contaminated subsurface environments and restoring drinking-water reservoirs.

Date: 2003
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DOI: 10.1038/nature01717

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