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Applied and Environmental Microbiology, April 2001, p. 1975-1978, Vol. 67, No. 4
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.4.1975-1978.2001

Methyl t-Butyl Ether Mineralization in Surface-Water Sediment Microcosms under Denitrifying Conditions

Paul M. Bradley,^* Francis H. Chapelle, and James E. Landmeyer

U.S. Geological Survey, Columbia, South Carolina 29210-7651

Received 21 November 2000/Accepted 1 February 2001

Mineralization of [U-¹⁴C]methyl t-butyl ether (MTBE) to ¹⁴CO₂ without accumulation of t-butyl alcohol (TBA) was observed in surface-water sediment microcosms under denitrifying conditions. Methanogenic activity and limited transformation of MTBE to TBA were observed in the absence of denitrification. Results indicate that bed sediment microorganisms can effectively degrade MTBE to nontoxic products under denitrifying conditions.

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^* Corresponding author. Mailing address: U.S. Geological Survey, 720 Gracern Rd., Suite 129, Columbia, SC 29210-7651. Phone: (803) 750-6125. Fax: (803) 750-6181. E-mail: pbradley{at}usgs.gov.

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Applied and Environmental Microbiology, April 2001, p. 1975-1978, Vol. 67, No. 4
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.4.1975-1978.2001

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