Effects of several electron donors on anaerobic dehalogenation of perchloroethylene
- Pacific Northwest Lab., Richland, WA (United States)
Microcosm studies were conducted to evaluate the ability of various electron donors to stimulate efficient microbial dechlorination of perchloroethylene (PCE). The electron donors tested included complex substrates that can be used by fermenters, acetogens, methanogens, and sulfidogens and simple compounds that can be used only be methanogens and a few acetogens. Identical tests were conducted for three aquifers contaminated with chlorinated ethylenes and one uncontaminated river sediment. Temporal changes in substrate, chlorinated ethylenes, and metabolic products such as methane, acetate, hydrogen, and formate were monitored to determine the relationship between major metabolic activities and dehalogenation. Data will be presented on the kinetics of the dehalogenation process as well as the efficiency of the microbes to use electrons from each substrate for dechlorination.
- OSTI ID:
- 210206
- Report Number(s):
- CONF-9509139--
- Country of Publication:
- United States
- Language:
- English
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