title: Performance and microbial community structure in an integrated anaerobic fluidized-bed membrane bioreactor treating synthetic benzothiazole contaminated wastewater.
abstract: This study investigated the impact of benzothiazole on the performance and microbial community structures in an integrated anaerobic fluidized-bed membrane bioreactor fed with synthetic benzothiazole wastewater (with gradually increasing doses of benzothiazole (1-50mg/L)). The addition of benzothiazole had an adverse effect on volatile fatty acids accumulation (from 10.86mg/L to 57.83mg/L), and membrane fouling (service period from 5.9d to 5.3d). The removal efficiency of benzothiazole was 96.0%. Biodegradation was the major benzothiazole removal route and the biodegradation efficiency obviously improved from 25.7% to 98.3% after adaptation. Sludge 1 (collected on day 58 without benzothiazole) and sludge 2 (collected on day 185 with 50mg/L benzothiazole) were analyzed using the Illumina®MiSeq platform. The most abundant genera were Trichococcus (43.1% in sludge 1) and Clostridium sensu stricto (23.9% in sludge 2). The dominant genus of archaea was Methanosaeta (90.3% in sludge 1 and 80.8% in sludge 2).
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Li
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Hu
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Chun-Hong
authors.initials: CH
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Xiao-Long
authors.initials: XL
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; School of Forestry, Northeast Forestry University, Harbin 150040, China. Electronic address: gaodw@hit.edu.cn.
authors.forename: Da-Wen
authors.initials: DW
authors.lastname: Gao
mesh_terms: D000693:Anaerobiosis; D052160:Benzothiazoles; D019149:Bioreactors; D012722:Sewage / Q000737:chemistry; D062065:Wastewater / Q000737:chemistry*
chemical_list: D052160:Benzothiazoles; D012722:Sewage; D062065:Wastewater
keywords: Anaerobic process; Benzothiazole; Biodegradation kinetics; Integrated anaerobic fluidized-bed membrane bioreactor; Microbial community structure