Biodegradation of alkylates under less agitated aquifer conditions |
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Authors: | Jay J Cho Makram T Suidan and Albert D Venosa |
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Institution: | 1. URS Corporation 7720 N 16th St.Ste 100 Phoenix, AZ85020, USA 2. Faculty of Engineering and Architecture, American University of Beirut, Dean's office.P.O.Box 11-0236, Riad El Solh 1107 2020, Beirut, Lebanon 3. US Environmental Protection Agency, National Risk Management Research Laboratory, Cincinnati, OH 45268, USA |
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Abstract: | The biodegradability of three alkylates (2,3-dimethylpentane, 2,4-dimethylpentane and 2,2,4-trimethylpentane) under less agitated aquifer conditions was investigated in this study. All three alkylates biodegraded completely under these conditions regardless of the presence or absence of ethanol or benzene, toluene, ethylbenzene, and xylenes (BTEX) in the feed. In the presence of ethanol, alkylates degradation was not inhibited by ethanol. However, alkylates degraded more slowly in the presence of BTEX suggesting competitive inhibition to microbial utilization of alkylates. In the sterile controls, alkylates concentrations remained unchanged throughout the experiments. |
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Keywords: | biodegradation alkylates inhibition BTEX ethanol |
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