Methanotrophic biodegradation of trichloroethylene in a hollow fiber membrane bioreactor
Article Abstract:
Higher amounts of trichloroethylene (TCE) were removed from the lumen of methanotrophic bacteria, Methylosinus trichosporium OB3b, inside a hollow fiber membrane bioreactor at hydraulic residence times of 5-9 min in the lumen than at hydraulic residence times of 3-15 min in the lumen and shell. Rapid biodegradation was observed when TCE was transferred to the shell, with 75% of the transferred TCE achieving complete biodegradation. These results suggest that a hollow fiber membrane reactor system coupled with a mutant strain of the methanotrophic bacteria could be an effective method for biodegradation.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
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Reductive dechlorination of PCB-contaminated sediments in an anaerobic bioreactor system
Article Abstract:
Anaerobic bioreactor systems were utilized to establish the mechanism of the microbial biodegradation of Aroclor 1248-spiked sediment, with a sanitary landfill leachate as a novel nutrient, carbon and microbial source. Average total chlorine and biphenyl of the original sample was reduced by 11% and 23%, respectively, after 13 weeks, with majority of the dechlorination occurring within seven weeks. These results show that the use of anaerobic bioreactor system is a promising technology for environmental bioremediation.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
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Methanotrophic TCE biodegradation in a multi-stage bioreactor
Article Abstract:
The biodegradation of methanotrophic trichloroethylene in a two-stage bioreactor system was investigated. The results showed that more than 90% of the trichloroethylene was removed in less than 4.5 hours during the single-pass operation while 93% was removed in under 6 hours of plug-flow residence during cross-flow operation. Biomass and trichloroethylene concentrations determined the rate of degradation.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
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