title: Bioremediation of wastewaters with decabromodiphenyl ether by anaerobic granular sludge.
abstract: Facilities adopting anaerobic granular sludge are widely used for the treatment of high strength wastewater, and hence collect many polybrominated diphenyl ethers (PBDEs), especially decabromodiphenyl ether (BDE-209). We initiated a detailed investigation to gain insight into the bioremoval of BDE-209 by anaerobic granules. Influenced by solution pH, ionic strength and temperature, the equilibrium time was ∼6 h and the biosorption amount increased from 0.099 to 1.25 mg/g suspended sludge with the increase of BDE-209 concentrations. Kinetic studies indicate that BDE-209 biosorption on anaerobic granules follows the pseudo second-order kinetic model. Isotherm analysis exhibits that the Langmuir model fits the data at low temperature, while the Freundlich model is appropriate at room temperature. Thermodynamic analysis shows that biosorption followed an endothermic path and was nonspontaneous with negative value of ΔG0. XPS and FTIR spectra confirmed that oxygen and nitrogen atoms notably contributed to BDE-209 binding.
authors.affiliation: Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, China. Electronic address: sqni@sdu.edu.cn.
authors.forename: Shou-Qing
authors.initials: SQ
authors.lastname: Ni
authors.affiliation: Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, China; College of Life Science, Shandong Normal University, Jinan 250014, China.
authors.forename: Zhibin
authors.initials: Z
authors.lastname: Wang
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: Lu
authors.initials: L
authors.lastname: Lv
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: Xueyou
authors.initials: X
authors.lastname: Liang
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: Longfei
authors.initials: L
authors.lastname: Ren
authors.affiliation: Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences, Jinan 250100, China.
authors.forename: Qingxin
authors.initials: Q
authors.lastname: Zhou
mesh_terms: D000327:Adsorption; D000693:Anaerobiosis; D001673:Biodegradation, Environmental; D003890:Desiccation; D005411:Flame Retardants / Q000302:isolation & purification*; D055768:Halogenated Diphenyl Ethers / Q000302:isolation & purification*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D009994:Osmolar Concentration; D012722:Sewage / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature; D013816:Thermodynamics; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
chemical_list: D005411:Flame Retardants; D055768:Halogenated Diphenyl Ethers; D012722:Sewage; D014874:Water Pollutants, Chemical; C010902:decabromobiphenyl ether
keywords: Anaerobic granular sludge; Biosorption; Decabromodiphenyl ether; Functional group; Kinetics