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Electron donor preference of a reductive dechlorinating consortium

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Abstract

A wetland sediment-derived microbial consortium was developed by the USGS and propagated in vitro to large quantities by SiREM Laboratory for use in bioaugmentation applications. The consortium had the capacity to completely dechlorinate 1,1,2,2-tetrachloroethene, tetrachloroethylene, trichloroethylene, 1,1,2-trichloroethane, cis- and trans-1,2-dichoroethylene, 1.1-dichloroethylene, 1,2-dichloroethane, vinyl chloride, carbon tetrachloride and chloroform. A suite of electron donors with characteristics useful for bioaugmentation applications was tested. The electron donors included lactate (the donor used during WBC-2 development), ethanol, chitin (Chitorem???), hydrogen releasing compound (HRC???), emulsified vegetable oil (Newman Zone???), and hydrogen gas. Ethanol, lactate, and chitin were particularly effective with respect to stimulating, supporting, and sustaining reductive dechlorination of the broad suite of chemicals that WBC-2 biodegraded. Chitorem??? was the most effective "slow release" electron donor tested. This is an abstract of a paper presented at the Proceedings of the 8th International In Situ and On-Site Bioremediation Symposium (Baltimore, MD 6/6-9/2005).

Suggested Citation

Lorah, M., Majcher, E., Jones, E., Driedger, G., Dworatzek, S., Graves, D., 2005, Electron donor preference of a reductive dechlorinating consortium, in Proceedings of the 8th International In Situ and On-Site Bioremediation Symposium, v. 3, Baltimore, MD, 6 June 2005 through 9 June 2005.

Publication type Conference Paper
Publication Subtype Conference Paper
Title Electron donor preference of a reductive dechlorinating consortium
ISBN 9781574771527
Volume 3
Year Published 2005
Language English
Larger Work Title Proceedings of the 8th International In Situ and On-Site Bioremediation Symposium
First page 1488
Conference Title 8th International In Situ and On-Site Bioremediation Symposium
Conference Location Baltimore, MD
Conference Date 6 June 2005 through 9 June 2005
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