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Biodegradation of Decabromodiphenyl Ether (BDE-209) by Crude Enzyme Extract from Pseudomonas aeruginosa

Author

Listed:
  • Yu Liu

    (School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
    Dapartment of Biotechnology, Daqing Branch of Heilongjiang Academy of Science, Daqing 163319, China)

  • Ai-Jun Gong

    (School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Li-Na Qiu

    (School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Jing-Rui Li

    (School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Fu-Kai Li

    (School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China)

Abstract

The biodegradation effect and mechanism of decabromodiphenyl ether (BDE-209) by crude enzyme extract from Pseudomonas aeruginosa were investigated. The results demonstrated that crude enzyme extract exhibited obviously higher degradation efficiency and shorter biodegradation time than Pseudomonas aeruginosa itself. Under the optimum conditions of pH 9.0, 35 °C and protein content of 2000 mg/L, 92.77% of the initial BDE-209 (20 mg/L) was degraded after 5 h. A BDE-209 biodegradation pathway was proposed on the basis of the biodegradation products identified by GC-MS analysis. The biodegradation mechanism showed that crude enzyme extract degraded BDE-209 into lower brominated PBDEs and OH-PBDEs through debromination and hydroxylation of the aromatic rings.

Suggested Citation

  • Yu Liu & Ai-Jun Gong & Li-Na Qiu & Jing-Rui Li & Fu-Kai Li, 2015. "Biodegradation of Decabromodiphenyl Ether (BDE-209) by Crude Enzyme Extract from Pseudomonas aeruginosa," IJERPH, MDPI, vol. 12(9), pages 1-19, September.
    • Handle: RePEc:gam:jijerp:v:12:y:2015:i:9:p:11829-11847:d:55995
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    Cited by:

    1. Dingfan Hu & Juan Wu & Luosheng Fan & Shunyao Li & Rong Jia, 2022. "Aerobic Degradation Characteristics and Mechanism of Decabromodiphenyl Ether (BDE-209) Using Complex Bacteria Communities," IJERPH, MDPI, vol. 19(24), pages 1-17, December.

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