The toxicity of selected gasoline components to glucose methanogenesis by aquifer microorganisms
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Abstract
Six model hydrocarbons, representing various classes of chemicals found in gasoline, and methyl ethyl ketone, were assayed for their inhibitory effect on glucose methanogenesis in slurries prepared from aquifer sediments and ground water. Biogas (CH4and CO2) production was monitored with an automated pressure transducer system. Benzene, 1-methyl naphthalene, and methyltert-butyl ether (MTBE) were found to have no inhibitory influence on biogas production rates at concentrations up to 71·7 mg/L. Similarly, octane, cyclohexane, indan, and methyl ethyl ketone (MEK) were found to have only marginal negative effects on the rate of biogas production in aquifer slurries, at concentrations ranging from 51·7 to 72·1 mg/L. Thus, gasoline components had low apparent toxicities to microorganisms responsible for glucose methanogenesis in aquifier slurries. As the concentrations of the assayed hydrocarbons are about 100 times those typically reported after an aquifer has been contaminated with gasoline, it is unlikely that individual hydrocarbons will substantially impact anaerobic metabolic processes.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | The toxicity of selected gasoline components to glucose methanogenesis by aquifer microorganisms |
| Series title | Anaerobe |
| DOI | 10.1006/anae.1996.0038 |
| Volume | 2 |
| Issue | 5 |
| Year Published | 1996 |
| Language | English |
| Publisher | Elsevier |
| Contributing office(s) | Toxic Substances Hydrology Program |
| Description | 5 p. |
| First page | 299 |
| Last page | 303 |
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