Production of more toxic hexa-brominated diphenyl ether from rapid biotransformation of decabromodiphenyl ether in anaerobic granular sludge

文献类型： 外文期刊

第一作者： Zhou, Qingxin

作者： Zhou, Qingxin;Ge, Cheng-Hao;Ahmad, Hafiz Adeel;Ni, Shou-Qing;Liu, Xiaolin;Bu, Cuina;Gao, Baoyu;Zhou, Qingxin;Zhou, Qingxin;Wang, Fengli

作者机构：

关键词： Anaerobic granular sludge; Decabromodiphenyl ether; Hexabrominated diphenyl ether; High throughput sequencing; Microbial degradation

期刊名称：INTERNATIONAL BIODETERIORATION & BIODEGRADATION （ 影响因子：4.32； 五年影响因子：4.719 ）

ISSN： 0964-8305

年卷期： 2018 年 134 卷

页码：

收录情况： SCI

摘要： Decabromodiphenyl ether (BDE-209) is used widely as a flame retardant and deserves more attention due to its potential danger to environment. Previous studies generally considered that BDE-209 degraded slowly in environment. Herein, a rapid reductive debromination of BDE-209 to BDE-154 was demonstrated with simultaneous stoichiometric bromide recovery (45%) in 10 h driven by the anaerobic granules. Debromination occurred in anaerobic granules when they were spiked with BDE-209 dissolved in the solvent dimethyl sulfoxide (DMSO), which was proved a potential cosubstrate for stimulating PBDE debromination. Moreover, the solvent DMSO enhanced the penetration of BDE-209 across cell membranes and forced the dominant phylum in anaerobic granules to change from Bacteroidetes to Euryarchaeota. Thus, the amended culture could better raise the functional genera Ralstonia and Pseudomonas, accounting for the rapid degradation of BDE-209. This is the first report that BDE-209 could be quickly debrominated to BDE-154 in anaerobic granules. Given the high cytotoxicity of BDE-154 produced from BDE-209, the fate of BDE-209 in the wastewater treatment plants should be paid more attention.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序