Microbial mineralization of ethene under sulfate-reducing conditions
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Abstract
Previous investigations demonstrated that respiratoly reductive dechlorination of vinyl chloride (VC) can be efficient even at H2 concentrations (≤2 nM) that are characteristic of SO4-reducing conditions. In the study reported here, microorganisms indigenous to a lake-bed sediment completely mineralized [1,2-14C] ethene to 1414CO2 when incubated under SO4-reducing conditions. Together, these observations argue for a novel mechanism for the net anaerobic oxidation of VC to CO2: reductive dechlorination of VC to ethene followed by anaerobic oxidation of ethene to CO2. Moreover, the results of this study suggest that reliance on ethene and/or ethane accumulation as a quantitative indicator of complete reductive dechlorination of chioroethene contaminants may not be warranted.
Suggested Citation
Bradley, P., and Chapelle, F.H., 2002, Microbial mineralization of ethene under sulfate-reducing conditions: Bioremediation Journal, v. 6, no. 1, p. 1-8, https://doi.org/10.1080/10889860290777431.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Microbial mineralization of ethene under sulfate-reducing conditions |
| Series title | Bioremediation Journal |
| DOI | 10.1080/10889860290777431 |
| Volume | 6 |
| Issue | 1 |
| Year Published | 2002 |
| Language | English |
| Contributing office(s) | Toxic Substances Hydrology Program |
| Description | 8 p. |
| First page | 1 |
| Last page | 8 |