Unified photoelectrocatalytic microbial fuel cell harnessing 3D binder-free photocathode for simultaneous power generation and dual pollutant removal

Jing Zhang; Zongwu Wang; Liangliang Chu; Ruyan Chen; Chunyan Zhang; Sam Toan; David M. Bagley; Jianhui Sun; Shuying Dong; Maohong Fan

doi:10.1016/j.jpowsour.2020.229133

Unified photoelectrocatalytic microbial fuel cell harnessing 3D binder-free photocathode for simultaneous power generation and dual pollutant removal

Jing Zhang, Zongwu Wang, Liangliang Chu, Ruyan Chen, Chunyan Zhang, Sam Toan, David M. Bagley, Jianhui Sun, Shuying Dong, Maohong Fan

Chemical Engineering

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16 Scopus citations

Abstract

A combined photoelectrocatalytic microbial fuel cell (photo-MFC) with BiOCl/reduced graphene oxide aerogel (BGA) photocathode is constructed for simultaneous power generation and dual pollutant removal. Owing to the lower cathodic internal resistance and enhanced reaction rate under light irradiation, the BGA photo-MFC exhibits excellent power generation capacity (696.51 ± 5.27 mV and 7.33 ± 0.23 W m⁻³) in comparison with the single MFC process (455.36 ± 7.18 mV and 1.88 ± 0.09 W m⁻³). Meanwhile, the removal efficiency of oxytetracycline (OTC) in the anode rises to 98.93 ± 0.15% after four days of operation, and the biotoxicity of OTC effluent to Escherichia coli DH5α is largely eliminated. At the cathode, 97.28 ± 0.64% of 40 mg L⁻¹ methyl orange (MO) can be degraded with the highest kinetic constant of 0.304 h⁻¹ at the optimal pH of 3. High-throughput sequencing analysis reveals that the Geobacter are enriched and responsible for the enhanced power generation of the BGA photo-MFC. The synergistic effects of photocatalysis and MFC in BGA photo-MFC dramatically increase the removal of OTC and MO in their respective chambers while producing energy in situ to drive the process without additional energy consumption, and exhibit extensive application prospects for actual wastewater treatment.

Original language	English (US)
Article number	229133
Journal	Journal of Power Sources
Volume	481
DOIs	https://doi.org/10.1016/j.jpowsour.2020.229133
State	Published - Jan 1 2021

Bibliographical note

Funding Information:
This work was supported by the NSFC (Grants No. 21677047 and 51808199), the China Postdoctoral Science Foundation (Grant No. 2018M630825 and 2019T120624). The authors also appreciate for the support from the Fund for Excellent Young Scholars (20180545) of Henan Normal University for the PhD, Nature Science Foundation of Henan province (182300410153).

Funding Information:
This work was supported by the NSFC (Grants No. 21677047 and 51808199 ), the China Postdoctoral Science Foundation (Grant No. 2018M630825 and 2019T120624 ). The authors also appreciate for the support from the Fund for Excellent Young Scholars ( 20180545 ) of Henan Normal University for the PhD, Nature Science Foundation of Henan province ( 182300410153 ).

Publisher Copyright:
© 2020

Keywords

BiOCl/reduced graphene oxide aerogel
Methyl orange
Oxytetracycline
Photoelectrocatalytic microbial fuel cell
Power generation

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2020.229133

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@article{788fbb76522b46c1984282914865f40a,

title = "Unified photoelectrocatalytic microbial fuel cell harnessing 3D binder-free photocathode for simultaneous power generation and dual pollutant removal",

abstract = "A combined photoelectrocatalytic microbial fuel cell (photo-MFC) with BiOCl/reduced graphene oxide aerogel (BGA) photocathode is constructed for simultaneous power generation and dual pollutant removal. Owing to the lower cathodic internal resistance and enhanced reaction rate under light irradiation, the BGA photo-MFC exhibits excellent power generation capacity (696.51 ± 5.27 mV and 7.33 ± 0.23 W m−3) in comparison with the single MFC process (455.36 ± 7.18 mV and 1.88 ± 0.09 W m−3). Meanwhile, the removal efficiency of oxytetracycline (OTC) in the anode rises to 98.93 ± 0.15% after four days of operation, and the biotoxicity of OTC effluent to Escherichia coli DH5α is largely eliminated. At the cathode, 97.28 ± 0.64% of 40 mg L−1 methyl orange (MO) can be degraded with the highest kinetic constant of 0.304 h−1 at the optimal pH of 3. High-throughput sequencing analysis reveals that the Geobacter are enriched and responsible for the enhanced power generation of the BGA photo-MFC. The synergistic effects of photocatalysis and MFC in BGA photo-MFC dramatically increase the removal of OTC and MO in their respective chambers while producing energy in situ to drive the process without additional energy consumption, and exhibit extensive application prospects for actual wastewater treatment.",

keywords = "BiOCl/reduced graphene oxide aerogel, Methyl orange, Oxytetracycline, Photoelectrocatalytic microbial fuel cell, Power generation",

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note = "Funding Information: This work was supported by the NSFC (Grants No. 21677047 and 51808199), the China Postdoctoral Science Foundation (Grant No. 2018M630825 and 2019T120624). The authors also appreciate for the support from the Fund for Excellent Young Scholars (20180545) of Henan Normal University for the PhD, Nature Science Foundation of Henan province (182300410153). Funding Information: This work was supported by the NSFC (Grants No. 21677047 and 51808199 ), the China Postdoctoral Science Foundation (Grant No. 2018M630825 and 2019T120624 ). The authors also appreciate for the support from the Fund for Excellent Young Scholars ( 20180545 ) of Henan Normal University for the PhD, Nature Science Foundation of Henan province ( 182300410153 ). Publisher Copyright: {\textcopyright} 2020",

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AU - Zhang, Jing

AU - Wang, Zongwu

AU - Chu, Liangliang

AU - Chen, Ruyan

AU - Zhang, Chunyan

AU - Toan, Sam

AU - Bagley, David M.

AU - Sun, Jianhui

AU - Dong, Shuying

AU - Fan, Maohong

N1 - Funding Information: This work was supported by the NSFC (Grants No. 21677047 and 51808199), the China Postdoctoral Science Foundation (Grant No. 2018M630825 and 2019T120624). The authors also appreciate for the support from the Fund for Excellent Young Scholars (20180545) of Henan Normal University for the PhD, Nature Science Foundation of Henan province (182300410153). Funding Information: This work was supported by the NSFC (Grants No. 21677047 and 51808199 ), the China Postdoctoral Science Foundation (Grant No. 2018M630825 and 2019T120624 ). The authors also appreciate for the support from the Fund for Excellent Young Scholars ( 20180545 ) of Henan Normal University for the PhD, Nature Science Foundation of Henan province ( 182300410153 ). Publisher Copyright: © 2020

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N2 - A combined photoelectrocatalytic microbial fuel cell (photo-MFC) with BiOCl/reduced graphene oxide aerogel (BGA) photocathode is constructed for simultaneous power generation and dual pollutant removal. Owing to the lower cathodic internal resistance and enhanced reaction rate under light irradiation, the BGA photo-MFC exhibits excellent power generation capacity (696.51 ± 5.27 mV and 7.33 ± 0.23 W m−3) in comparison with the single MFC process (455.36 ± 7.18 mV and 1.88 ± 0.09 W m−3). Meanwhile, the removal efficiency of oxytetracycline (OTC) in the anode rises to 98.93 ± 0.15% after four days of operation, and the biotoxicity of OTC effluent to Escherichia coli DH5α is largely eliminated. At the cathode, 97.28 ± 0.64% of 40 mg L−1 methyl orange (MO) can be degraded with the highest kinetic constant of 0.304 h−1 at the optimal pH of 3. High-throughput sequencing analysis reveals that the Geobacter are enriched and responsible for the enhanced power generation of the BGA photo-MFC. The synergistic effects of photocatalysis and MFC in BGA photo-MFC dramatically increase the removal of OTC and MO in their respective chambers while producing energy in situ to drive the process without additional energy consumption, and exhibit extensive application prospects for actual wastewater treatment.

AB - A combined photoelectrocatalytic microbial fuel cell (photo-MFC) with BiOCl/reduced graphene oxide aerogel (BGA) photocathode is constructed for simultaneous power generation and dual pollutant removal. Owing to the lower cathodic internal resistance and enhanced reaction rate under light irradiation, the BGA photo-MFC exhibits excellent power generation capacity (696.51 ± 5.27 mV and 7.33 ± 0.23 W m−3) in comparison with the single MFC process (455.36 ± 7.18 mV and 1.88 ± 0.09 W m−3). Meanwhile, the removal efficiency of oxytetracycline (OTC) in the anode rises to 98.93 ± 0.15% after four days of operation, and the biotoxicity of OTC effluent to Escherichia coli DH5α is largely eliminated. At the cathode, 97.28 ± 0.64% of 40 mg L−1 methyl orange (MO) can be degraded with the highest kinetic constant of 0.304 h−1 at the optimal pH of 3. High-throughput sequencing analysis reveals that the Geobacter are enriched and responsible for the enhanced power generation of the BGA photo-MFC. The synergistic effects of photocatalysis and MFC in BGA photo-MFC dramatically increase the removal of OTC and MO in their respective chambers while producing energy in situ to drive the process without additional energy consumption, and exhibit extensive application prospects for actual wastewater treatment.

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KW - Methyl orange

KW - Oxytetracycline

KW - Photoelectrocatalytic microbial fuel cell

KW - Power generation

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Unified photoelectrocatalytic microbial fuel cell harnessing 3D binder-free photocathode for simultaneous power generation and dual pollutant removal

Abstract

Bibliographical note

Keywords

UN SDGs

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