title: Stimulative mineralization of p-fluoronitrobenzene in biocathode microbial electrolysis cell with an oxygen-limited environment.
abstract: p-Fluoronitrobenzene (p-FNB) is a toxic compound and tends to accumulate in the environment. p-FNB can be effectively removed and defluorinated in a single-chamber bioelectrochemical system (BES). To verify the suppositionally integrated reductive and oxidative metabolism mechanism in the BES, an oxygen-limited environment was used, with pure oxygen and nitrogen environments used as two controls. Under the oxygen-limited condition, the most excellent performance was achieved. The defluorination rate and mineralization efficiency were 0.0132h(-1) and 72.99±5.68% after 96h, with 75.4% of fluorine in the form of the fluoride ion. This resulted from the unique environment that allowed conventionally integrated reductive and oxidative catabolism. Moreover, the oxidation-reduction potential (ORP) had a significant effect on microbial communities, which was also an important reason for performance diversity. These results provide a new method for complete p-FNB treatment and a control strategy by ORP regulation for optimal system performance.
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou 310012, China.
authors.forename: Dongsheng
authors.initials: D
authors.lastname: Shen
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China.
authors.forename: Xueqin
authors.initials: X
authors.lastname: Zhang
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou 310012, China. Electronic address: fenghuajun@mail.zjgsu.edu.cn.
authors.forename: Huajun
authors.initials: H
authors.lastname: Feng
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China.
authors.forename: Kun
authors.initials: K
authors.lastname: Zhang
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China.
authors.forename: Kun
authors.initials: K
authors.lastname: Wang
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou 310012, China.
authors.forename: Yuyang
authors.initials: Y
authors.lastname: Long
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou 310012, China.
authors.forename: Meizhen
authors.initials: M
authors.lastname: Wang
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China.
authors.forename: Yanfeng
authors.initials: Y
authors.lastname: Wang
mesh_terms: D001419:Bacteria / Q000187:drug effects / Q000254:growth & development; D001673:Biodegradation, Environmental / Q000187:drug effects; D001674:Bioelectric Energy Sources / Q000382:microbiology; D002244:Carbon / Q000302:isolation & purification; D002384:Catalysis / Q000187:drug effects; D058645:Denaturing Gradient Gel Electrophoresis; D055664:Electrochemical Techniques; D004566:Electrodes; D054879:Halogenation / Q000187:drug effects; D008903:Minerals / Q000737:chemistry*; D009578:Nitrobenzenes / Q000737:chemistry* / Q000302:isolation & purification; D010084:Oxidation-Reduction / Q000187:drug effects; D010100:Oxygen / Q000494:pharmacology*
chemical_list: D008903:Minerals; D009578:Nitrobenzenes; C046306:1-fluoro-2-nitrobenzene; D002244:Carbon; D010100:Oxygen
keywords: Biocathode; Defluorination and mineralization; Oxidation–reduction potential; Reduction and oxidation