Anaerobic biodegradation of decabromodiphenyl ether (BDE-209)-contaminated sediment by organic compost

被引：23
作者：
Chang, Yi-Tang [1 ]
Lo, Tsui [2 ]
Chou, Hsi-Ling [1 ]
Laio, Yi-Fen [1 ]
Lin, Cheng-Chun [1 ]
Chen, Houng-Toung [2 ]
机构：
[1] Soochow Univ, Dept Microbiol, Taipei 11102, Taiwan
[2] Ming Chi Univ Technol, Dept Safety Hlth & Environm Engn, New Taipei 24301, Taiwan
来源：
INTERNATIONAL BIODETERIORATION & BIODEGRADATION | 2016年 / 113卷
关键词：
Polybrominated diphenyl ether; Decabromodiphenyl ether; Anaerobic microcosm; Organic composts; Sorption; Reductive debromination; POLYBROMINATED DIPHENYL ETHERS; POLYCHLORINATED-BIPHENYLS PCBS; BROMINATED FLAME RETARDANTS; 16S RIBOSOMAL-RNA; PSEUDOMONAS-AERUGINOSA; PBDES; DEHALOCOCCOIDES; IDENTIFICATION; DEBROMINATION; BACTERIA;
D O I：
10.1016/j.ibiod.2016.04.017
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
Polybrominated diphenyl ethers (PBDEs), commonly used as a flame retardants for industrial and commercial products, have a strong tendency to accumulate in the interface of water/soil/sediments and are difficult to biodegrade. An effective biological treatment for PBDE removal is needed. In this study, we investigated the use of 3 organic compost materials (BM-2, BM-6, and BP-2) to remove 20 mg kg(-1) decabromodiphenyl ether (BDE-209) from contaminated sediment in anaerobic microcosms for 120 days and detected the bacterial community in samples. Organic substance of compost had sorption and biodegradation ability. BM-6 showed the highest sorption of BDE-209, at 38.95%, and BM-3 the highest biological activity, at 34.90%. Methylophilus spp., Pseudomonas spp., Clostridium spp., and Dehalococcoides sp. were identified in anaerobic microcosms with PBDE biodegradation. The pathway of anaerobic DBDE biodegradation from higher to lower brominated PBDE was identified by the appearance of PBDE biometabolites and functional genes related to reductive debromination. We have identified an effective approach for bioremediating PBDE-contaminated sediment by using organic compost; this approach is highly recommended for practical engineering for off-site remediation. (C) 2016 Elsevier Ltd. All rights reserved.
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页码：228 / 237
页数：10
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