title: 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.
authors.affiliation: Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, China.
authors.forename: Shou-Qing
authors.initials: SQ
authors.lastname: Ni
authors.affiliation: Department of Mechanical and Environmental Protection, Shandong Electric Power Engineering Consulting Institute (SDEPCI), Jinan 250013, China.
authors.forename: Qingjie
authors.initials: Q
authors.lastname: Cui
authors.affiliation: Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Zheng
mesh_terms: D000332:Aerobiosis; D055768:Halogenated Diphenyl Ethers / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D012722:Sewage / Q000382:microbiology*; D014874:Water Pollutants, Chemical / Q000378:metabolism*; D018508:Water Purification / Q000379:methods*
chemical_list: D055768:Halogenated Diphenyl Ethers; D012722:Sewage; D014874:Water Pollutants, Chemical