Reductive debromination of the commercial polybrominated biphenyl mixture Firemaster BP6 by anaerobic microorganisms from sediments
Article Abstract:
Sediment samples from polychlorinated and polybrominated biphenyl (PCB and PBB)-contaminated sites were used as inocula to test for the ability to debrominate Firestarter, a commercial PBB mixture. The results showed that sediments contaminated with either PBB or PCB could debrominate Firemaster. In addition, additional debromination products could be produced by pyruvate enrichment, while more efficient debromination could be achieved by acclimation. These results suggest that it may be possible to optimize reductive dehalogenation. An average of 1.25 bromines per biphenyl were removed by organisms in the PBB-contaminated sediment.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1992
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Anaerobic dechlorination of polychlorobiphenyls (Aroclor 1242) by pasteurized and ethanol-treated microorganisms from sediments
Article Abstract:
Studies of microorganisms isolated from the sediment of theupper Hudson River identified two groups of polychlorobiphenyl (PCB)-dechlorinating bacteria. An inoculum was treated with ethanol and heat toisolate spore-forming organisms and was compared to the non-treated group consisting of both spore-forming and non-spore-forming bacteria. Although both groups dechlorinated PCBs, treated organisms preferentially removed meta chlorines with no associated methane production. The non-treated group removed both meta and para chlorines. This suggests that PCB-dechlorinating organisms can be grouped into two populations.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1992
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2-bromoethanesulfate, sulfate, molybdate, and ethanesulfonate inhibit anaerobic dechlorination of polychlorobiphenyls by pasteurized microorganisms
Article Abstract:
The roles of 2-bromoethanesulfate (BES), sulfate, molybdate and ethanesulfonate on the dechlorination of polychlorinated biphenyls (PCBs) by pasteurized microorganisms have been studied. The inoculum was obtained from site H7 sediments in upper Hudson River, NY. The dechlorination pattern was the typical meta-preferential M pattern. Results reveal that the microorganisms consumed the anions and sulfide production from BES has been observed. These findings suggest pattern M dechlorination is mediated by spore-forming sulfidogenic bacteria.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1999
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