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Communication

Aerobic Microbial Mineralization of Dichloroethene as Sole Carbon Substrate

Paul M. Bradley* and Francis H. Chapelle

U.S. Geological Survey, 720 Gracern Road, Suite 129, Columbia, South Carolina 29210-7651

Environ. Sci. Technol., 2000, 34 (1), pp 221–223

DOI: 10.1021/es990785c

Publication Date (Web): November 24, 1999

Corresponding author telephone: (803) 750-6125; fax: (803) 750-6181; e-mail: pbradley@usgs.gov.

Abstract

Microorganisms indigenous to the bed sediments of a black-water stream utilized 1,2-dichloroethene (1,2-DCE) as a sole carbon substrate for aerobic metabolism. Although no evidence of growth was observed in the minimal salts culture media used in this study, efficient aerobic microbial mineralization of 1,2-DCE as sole carbon substrate was maintained through three sequential transfers (10⁷ final dilution) of the original environmental innoculum. These results indicate that 1,2-DCE can be utilized as a primary substrate to support microbial metabolism under aerobic conditions.

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