Interaction of polybrominated diphenyl ethers and aerobic granular sludge: biosorption and microbial degradation.
Interaction of polybrominated diphenyl ethers and aerobic granular sludge: biosorption and microbial degradation.
复制标题
多溴二苯醚与好氧颗粒污泥的相互作用:生物吸附和微生物降解
DOI:
10.1155/2014/274620
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发表时间:
2014
影响因子:
--
通讯作者:
Zheng Z
中科院分区:
文献类型:
--
作者:
Ni SQ;Cui Q;Zheng Z
As a new category of persistent organic pollutants, polybrominated diphenyl ethers (PBDEs) have become ubiquitous global environmental contaminants. No literature is available on the aerobic biotransformation of decabromodiphenyl ether (BDE-209). Herein, we investigated the interaction of PBDEs with aerobic granular sludge. The results show that the removal of BDE-209 from wastewater is mainly via biosorption onto aerobic granular sludge. The uptake capacity increased when temperature, contact time, and sludge dosage increased or solution pH dropped. Ionic strength had a negative influence on BDE-209 adsorption. The modified pseudo first-order kinetic model was appropriate to describe the adsorption kinetics. Microbial debromination of BDE-209 did not occur during the first 30 days of operation. Further study found that aerobic microbial degradation of 4,4′-dibromodiphenyl ether happened with the production of lower BDE congeners.
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