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A novel UV-assisted PEC-MFC system with CeO2/TiO2/ACF catalytic cathode for gas phase VOCs treatment.
Chemosphere. 2020 Sep; 255:126930.C

Abstract

Emissions of volatile organic compounds (VOCs) air pollutants could worsen air quality and adversely affect human health, thus developing more efficient low-temperature VOCs removal techniques is desired. A novel continuous system integrating UV-assisted photo-electrochemical catalysis with microbial fuel cell (UV-assisted PEC-MFC) has been established for promoting removal of gaseous ethyl acetate or toluene and generating electricity simultaneously. In this system, CeO2/TiO2/ACF catalytic cathode is prepared and used for combination with bio-anode for accelerating cathodic reaction. This UV-assisted PEC-MFC system exhibits an excellent elimination capacity (EC) of ethyl acetate (∼0.39 g/m3, EC: ∼2.52 g/m3/h) or toluene (∼0.29 g/m3, EC: 1.89 g/m3/h) under close-circuit condition. Furthermore, an outstanding elimination capacity (EC: 28.04 g/m3/h) for high concentration toluene (∼4.10 g/m3) removal is obtained after toluene gas passes sequentially through the catalytic cathode then the bio-anode. This way of PEC degradation and biodegradation, avoids inhibition of exoelectrogens activity from toxicity of high concentration toluene. Simultaneously, the cell voltage of UV-assisted PEC-MFC system is stable at 0.11 V (vs. SCE) and 1.452×10-4 kWh is generated from treatment of toluene gas stream in 6 h duration time. The possible mechanism of VOCs removal in this novel system has been proposed and discussed. This study provides new technical basis for treating gaseous pollutants via integrating photo-electrochemical catalysis with electricity generating microbial fuel cell for energy conversion.

Authors+Show Affiliations

Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China.Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China.Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China; School of Ocean Science and Technology, Dalian University of Technology, Panjin, 124221, China. Electronic address: lifenliu@dlut.edu.cn.Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32402878

Citation

Chen, Qiyuan, et al. "A Novel UV-assisted PEC-MFC System With CeO2/TiO2/ACF Catalytic Cathode for Gas Phase VOCs Treatment." Chemosphere, vol. 255, 2020, p. 126930.
Chen Q, Liu L, Liu L, et al. A novel UV-assisted PEC-MFC system with CeO2/TiO2/ACF catalytic cathode for gas phase VOCs treatment. Chemosphere. 2020;255:126930.
Chen, Q., Liu, L., Liu, L., & Zhang, Y. (2020). A novel UV-assisted PEC-MFC system with CeO2/TiO2/ACF catalytic cathode for gas phase VOCs treatment. Chemosphere, 255, 126930. https://doi.org/10.1016/j.chemosphere.2020.126930
Chen Q, et al. A Novel UV-assisted PEC-MFC System With CeO2/TiO2/ACF Catalytic Cathode for Gas Phase VOCs Treatment. Chemosphere. 2020;255:126930. PubMed PMID: 32402878.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A novel UV-assisted PEC-MFC system with CeO2/TiO2/ACF catalytic cathode for gas phase VOCs treatment. AU - Chen,Qiyuan, AU - Liu,Lu, AU - Liu,Lifen, AU - Zhang,Yizhen, Y1 - 2020/05/03/ PY - 2019/10/20/received PY - 2020/04/05/revised PY - 2020/04/27/accepted PY - 2020/5/14/pubmed PY - 2020/7/3/medline PY - 2020/5/14/entrez KW - CeO(2)/TiO(2)/ACF cathode KW - Electricity generation KW - Hydroxyl radical KW - PEC-MFC KW - VOCs removal SP - 126930 EP - 126930 JF - Chemosphere JO - Chemosphere VL - 255 N2 - Emissions of volatile organic compounds (VOCs) air pollutants could worsen air quality and adversely affect human health, thus developing more efficient low-temperature VOCs removal techniques is desired. A novel continuous system integrating UV-assisted photo-electrochemical catalysis with microbial fuel cell (UV-assisted PEC-MFC) has been established for promoting removal of gaseous ethyl acetate or toluene and generating electricity simultaneously. In this system, CeO2/TiO2/ACF catalytic cathode is prepared and used for combination with bio-anode for accelerating cathodic reaction. This UV-assisted PEC-MFC system exhibits an excellent elimination capacity (EC) of ethyl acetate (∼0.39 g/m3, EC: ∼2.52 g/m3/h) or toluene (∼0.29 g/m3, EC: 1.89 g/m3/h) under close-circuit condition. Furthermore, an outstanding elimination capacity (EC: 28.04 g/m3/h) for high concentration toluene (∼4.10 g/m3) removal is obtained after toluene gas passes sequentially through the catalytic cathode then the bio-anode. This way of PEC degradation and biodegradation, avoids inhibition of exoelectrogens activity from toxicity of high concentration toluene. Simultaneously, the cell voltage of UV-assisted PEC-MFC system is stable at 0.11 V (vs. SCE) and 1.452×10-4 kWh is generated from treatment of toluene gas stream in 6 h duration time. The possible mechanism of VOCs removal in this novel system has been proposed and discussed. This study provides new technical basis for treating gaseous pollutants via integrating photo-electrochemical catalysis with electricity generating microbial fuel cell for energy conversion. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/32402878/A_novel_UV_assisted_PEC_MFC_system_with_CeO2/TiO2/ACF_catalytic_cathode_for_gas_phase_VOCs_treatment_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(20)31123-1 DB - PRIME DP - Unbound Medicine ER -