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Interaction of polybrominated diphenyl ethers and aerobic granular sludge: biosorption and microbial degradation.

ABSTRACT: 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.

SUBMITTER: Ni SQ

PROVIDER: S-EPMC4058842 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

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Interaction of polybrominated diphenyl ethers and aerobic granular sludge: biosorption and microbial degradation.

Ni Shou-Qing SQ Cui Qingjie Q Zheng Zhen Z

BioMed research international 20140529

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 t ...[more]

PMID: 25009812

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