title: The Detoxification and Degradation of Benzothiazole from the Wastewater in Microbial Electrolysis Cells.
abstract: In this study, the high-production-volume chemical benzothiazole (BTH) from synthetic water was fully degraded into less toxic intermediates of simple organic acids using an up-flow internal circulation microbial electrolysis reactor (UICMER) under the hydraulic retention time (HRT) of 24 h. The bioelectrochemical system was operated at 25 ± 2 °C and continuous-flow mode. The BTH loading rate varied during experiments from 20 g·m-3·day-1to 110 g·m-3·day-1. BTH and soluble COD (Chemical Oxygen Demand) removal efficiency reached 80% to 90% under all BTH loading rates. Bioluminescence based Shewanella oneidensis strain MR-1 ecotoxicity testing demonstrated that toxicity was largely decreased compared to the BTH wastewater influent and effluent of two control experiments. The results indicated that MEC (Microbial Electrolysis Cell) was useful and reliable for improving BTH wastewater treatment efficiency, enabling the microbiological reactor to more easily respond to the requirements of higher loading rate, which is meaningful for economic and efficient operation in future scale-up.
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China. liu_xianshu@126.com.
authors.forename: Xianshu
authors.initials: X
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China. hitdingjie@163.com.
authors.forename: Jie
authors.initials: J
authors.lastname: Ding
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China. rnq@hit.edu.cn.
authors.forename: Nanqi
authors.initials: N
authors.lastname: Ren
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China. dongding8493@163.com.
authors.forename: Qingyue
authors.initials: Q
authors.lastname: Tong
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China. zly3161@163.com.
authors.forename: Luyan
authors.initials: L
authors.lastname: Zhang
mesh_terms: D052160:Benzothiazoles / Q000737:chemistry / Q000378:metabolism*; D019149:Bioreactors / Q000382:microbiology; D004572:Electrolysis; D052918:Environmental Restoration and Remediation / Q000295:instrumentation / Q000379:methods*; D014865:Waste Disposal, Fluid / Q000295:instrumentation / Q000379:methods*; D062065:Wastewater / Q000737:chemistry* / Q000382:microbiology; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000378:metabolism*
chemical_list: D052160:Benzothiazoles; D062065:Wastewater; D014874:Water Pollutants, Chemical; C005465:benzothiazole
keywords: benzothiazole; biodegradability; microbial electrolysis cell; potential toxicity