| Abstract: | Microorganisms indigenous to the stream-bed sediments at two gasoline- contaminated groundwater sites demonstrated significant mineralization of the fuel oxygenates, methyl tert-butyl ether (MTBE) and tert-butyl alcohol (TBA). Up to 73% of [U-14C]-MTBE and 84% of [U-14C]-TBA were degraded to 14CO2 under mixed aerobic/anaerobic conditions. No significant mineralization was observed under strictly anaerobic conditions. The results indicate that, under the mixed aerobic/anaerobic conditions characteristic of stream-bed sediments, microbial processes may provide a significant environmental sink for MTBE and TBA delivered to surface water bodies by contaminated groundwater or by other sources.Microorganisms indigenous to the stream-bed sediments at two gasoline-contaminated groundwater sites demonstrated significant mineralization of the fuel oxygenates, methyl tert-butyl ether (MTBE) and tert-butyl alcohol (TBA). Up to 73% of [U-14C]-MTBE and 84% of [U-14C]-TBA were degraded to 14CO2 under mixed aerobic/anaerobic conditions. No significant mineralization was observed under strictly anaerobic conditions. The results indicate that, under the mixed aerobic/anaerobic conditions characteristic of stream-bed sediments, microbial processes may provide a significant environmental sink for MTBE and TBA delivered to surface water bodies by contaminated groundwater or by other sources. |
| Genre: | Article |
| ProdID: | 70021989 |
| Citation Author: | Bradley, P. M.; Landmeyer, J. E.; Chapelle, F. H. |
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| Citation End Page: | 1879 |
| Citation Issue: | 11 |
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| Citation Language: | English |
| Citation Larger Work Title: | Environmental Science and Technology |
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| Citation Number Of Pages: | 3 |
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| Citation Publisher: | ACS |
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| Citation Search Results Text: | Aerobic mineralization of MTBE and tert-butyl alcohol by stream-bed sediment microorganisms; 1999; Article; Journal; Environmental Science and Technology; Bradley, P. M.; Landmeyer, J. E.; Chapelle, F. H. |
| Citation Start Page: | 1877 |
| Citation Volume: | 33 |
| Citation Year: | 1999 |
| Type: | citation/reference |
| Text: | Aerobic mineralization of MTBE and tert-butyl alcohol by stream-bed sediment microorganisms; 1999; Article; Journal; Environmental Science and Technology; Bradley, P. M.; Landmeyer, J. E.; Chapelle, F. H. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1021/es990062t |
| Date Other: | Fri, 1 Jan 1999 00:00 -0600 |
| Publisher: | ACS |
