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Induction of cathodic voltage reversal and hydrogen peroxide synthesis in a serially stacked microbial fuel cell.
J Environ Manage. 2019 Jul 01; 241:84-90.JE

Abstract

We developed an innovative strategy to address the inhibition of anode-respiring bacteria due to voltage reversal in serially stacked microbial fuel cells by inducing cathodic voltage reversal and H2O2 production. When platinum-coated carbon (Pt/C) cathodes were employed (stacked MFCPt/C) and the MFC was operated with acetate medium, the last unit (MFC 4) caused a voltage reversal of -0.8 V with a substantial anode overpotential of 1.22 V. After replacing the Pt/C cathode with a Pt-free carbon gas diffusion electrode in MFC 4, an electrode overpotential, approximately 0.5 V, was shifted from the anode to the cathode, inducing cathodic voltage reversal. Under cathodic voltage reversal, MFC 4 generated H2O2 at a production rate of 117 mg H2O2/m2-h. Hence, under cathodic voltage reversal induced by Pt-free cathodes, due to less anode polarization, the anode-respiring activity can largely be sustained in a stacked MFC that treats organic wastewater consistently and the quality of treated wastewater may be improved with energy-efficient and on-site generated H2O2.

Authors+Show Affiliations

Department of Civil & Environmental Engineering, University of Waterloo, 200 University Ave. West, ON, N2L 3G1, Canada; Environmental Assessment Group, Korea Environment Institute, Sejong, South Korea.Department of Civil & Environmental Engineering, University of Waterloo, 200 University Ave. West, ON, N2L 3G1, Canada; Department of Civil and Resource Engineering, Dalhousie University, Halifax, NS, B3H 4R2, Canada.Department of Civil & Environmental Engineering, University of Waterloo, 200 University Ave. West, ON, N2L 3G1, Canada. Electronic address: hyungsool@uwaterloo.ca.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30986665

Citation

An, Junyeong, et al. "Induction of Cathodic Voltage Reversal and Hydrogen Peroxide Synthesis in a Serially Stacked Microbial Fuel Cell." Journal of Environmental Management, vol. 241, 2019, pp. 84-90.
An J, Gao Y, Lee HS. Induction of cathodic voltage reversal and hydrogen peroxide synthesis in a serially stacked microbial fuel cell. J Environ Manage. 2019;241:84-90.
An, J., Gao, Y., & Lee, H. S. (2019). Induction of cathodic voltage reversal and hydrogen peroxide synthesis in a serially stacked microbial fuel cell. Journal of Environmental Management, 241, 84-90. https://doi.org/10.1016/j.jenvman.2019.04.016
An J, Gao Y, Lee HS. Induction of Cathodic Voltage Reversal and Hydrogen Peroxide Synthesis in a Serially Stacked Microbial Fuel Cell. J Environ Manage. 2019 Jul 1;241:84-90. PubMed PMID: 30986665.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Induction of cathodic voltage reversal and hydrogen peroxide synthesis in a serially stacked microbial fuel cell. AU - An,Junyeong, AU - Gao,Yaohuan, AU - Lee,Hyung-Sool, Y1 - 2019/04/12/ PY - 2019/02/28/received PY - 2019/03/28/revised PY - 2019/04/07/accepted PY - 2019/4/16/pubmed PY - 2019/9/26/medline PY - 2019/4/16/entrez KW - Hydrogen peroxide KW - Microbial fuel cell KW - Overpotential KW - Stack KW - Voltage reversal SP - 84 EP - 90 JF - Journal of environmental management JO - J. Environ. Manage. VL - 241 N2 - We developed an innovative strategy to address the inhibition of anode-respiring bacteria due to voltage reversal in serially stacked microbial fuel cells by inducing cathodic voltage reversal and H2O2 production. When platinum-coated carbon (Pt/C) cathodes were employed (stacked MFCPt/C) and the MFC was operated with acetate medium, the last unit (MFC 4) caused a voltage reversal of -0.8 V with a substantial anode overpotential of 1.22 V. After replacing the Pt/C cathode with a Pt-free carbon gas diffusion electrode in MFC 4, an electrode overpotential, approximately 0.5 V, was shifted from the anode to the cathode, inducing cathodic voltage reversal. Under cathodic voltage reversal, MFC 4 generated H2O2 at a production rate of 117 mg H2O2/m2-h. Hence, under cathodic voltage reversal induced by Pt-free cathodes, due to less anode polarization, the anode-respiring activity can largely be sustained in a stacked MFC that treats organic wastewater consistently and the quality of treated wastewater may be improved with energy-efficient and on-site generated H2O2. SN - 1095-8630 UR - https://www.unboundmedicine.com/medline/citation/30986665/Induction_of_cathodic_voltage_reversal_and_hydrogen_peroxide_synthesis_in_a_serially_stacked_microbial_fuel_cell_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0301-4797(19)30473-6 DB - PRIME DP - Unbound Medicine ER -
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