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  3. Agricultural Chemistry / 農業化學系
  4. Microbial degradation of 4-monobrominated diphenyl ether in an aerobic sludge and the DGGE analysis of diversity
 
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Microbial degradation of 4-monobrominated diphenyl ether in an aerobic sludge and the DGGE analysis of diversity

Journal
Journal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastes
Journal Volume
45
Journal Issue
5
Pages
379-385
Date Issued
2010
Author(s)
Chen C.-Y.
Wang C.-K.
YANG-HSIN SHIH  
DOI
10.1080/03601231003799945
URI
https://scholars.lib.ntu.edu.tw/handle/123456789/446316
URL
https://www2.scopus.com/inward/record.uri?eid=2-s2.0-77953154711&doi=10.1080%2f03601231003799945&partnerID=40&md5=19a9e8ab3fbec7f736b36ceb965c1950
Abstract
Polybrominated diphenyl ethers (PBDEs) were applied as flame retardant additives in polymers for many plastic and electronic products. Due to their ubiquitous distribution in the environment, potential toxicity to human and tendency for bioaccumulation, PBDEs have raised public safety concern. In this study we examined the degradation of 4-monobrominated diphenyl ether (4-BDE) in aerobic sludge, as a model for PBDE biodegradation. Degradation of 4-BDE was observed in aerobic sludge. Co-metabolism with toluene or diphenyl ether facilitated 4-BDE biodegradation in terms of kinetics and efficiency. Diphenyl ether seems to perform slightly better as an auxiliary carbon source than toluene in facilitating 4-BDE degradation. During the experiment we identified diphenyl ether by gas chromatography/mass spectrometry(GC/MS), which indicates that an anaerobic debromination has occurred. Bacterial community composition was monitored with denaturing gradient gel electrophoresis. The fragments enriched in 4-BDE-degrading aerobic sludge samples belong to presumably a novel anaerobic Clostridiales species distantly related to all known debrominating microbes. This suggests that 4-BDE biodegradation can occur in anaerobic micro-niche in an apparently aerobic environment, by a previously unknown bacterial species. These findings can provide better understandings of biodegradation of brominated diphenyl ethers and can facilitate the prediction of the fate of PBDEs in the environment. ? Taylor & Francis Group, LLC.
Subjects
Aerobic sludge; Co-metabolism; Debromination; Denaturing gradient gel electrophoresis; Polybrominated diphenyl ethers
SDGs

[SDGs]SDG3

Other Subjects
Aerobic sludge; Bacterial community composition; Bacterial species; Brominated diphenyl ethers; Carbon source; Debromination; Denaturing gradient gel electrophoresis; Diphenyl ether; Electronic product; Flame-retardant additives; Gas chromatography/mass spectrometry; Microbial degradation; Polybrominated diphenyl ethers; Public safety; Bacteria; Bacteriology; Biochemistry; Biodegradation; Denaturation; Electronics industry; Electrophoresis; Ethers; Flame retardants; Gels; Metabolism; Organic compounds; Plastic products; Polyacrylates; Toluene; Degradation; diphenyl ether derivative; flame retardant; RNA 16S; anoxic conditions; bacterium; bioaccumulation; biodegradation; community composition; diversity index; gas chromatography; mass spectrometry; microbial activity; oxic conditions; PBDE; plastic; polymer; public health; sludge; toluene; toxicity; anaerobic growth; article; bioremediation; chemistry; genetics; metabolism; microbiology; polyacrylamide gel electrophoresis; polymerase chain reaction; sediment; sewage; time; water pollutant; Anaerobiosis; Biodegradation, Environmental; Electrophoresis, Polyacrylamide Gel; Flame Retardants; Geologic Sediments; Halogenated Diphenyl Ethers; Polymerase Chain Reaction; RNA, Ribosomal, 16S; Sewage; Time Factors; Water Pollutants, Chemical; Bacteria (microorganisms); Clostridiales
Type
journal article

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