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Scaling up Microbial Fuel Cells for Treating Swine Wastewater

by 1,2 and 3,*
Division of Experimental, Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety, Hadano, Kanagawa 257–0015, Japan
Department of Biomedical Science, Chubu University, Kasugai, Aichi 487–8501, Japan
Department of Civil Engineering, Nagoya Institute of Technology, Nagoya, Aichi 466–8555, Japan
Author to whom correspondence should be addressed.
Water 2019, 11(9), 1803;
Received: 23 July 2019 / Revised: 24 August 2019 / Accepted: 26 August 2019 / Published: 29 August 2019
(This article belongs to the Special Issue Advances in Water and Wastewater Monitoring and Treatment Technology)
Conventional aerobic treatment of swine wastewater, which generally contains 4500–8200 mg L−1 of organic matter, is energy-consuming. The aim of this study was to assess the application of scaled-up microbial fuel cells (MFCs) with different capacities (i.e., 1.5 L, 12 L, and 100 L) for removing organic matter from swine wastewater. The MFCs were single-chambered, consisting of an anode of microbially reduced graphene oxide (rGO) and an air-cathode of platinum-coated carbon cloth. The MFCs were polarized via an external resistance of 3–10 Ω for 40 days for the 1.5 L-MFC and 120 days for the 12L- and 100 L-MFC. The MFCs were operated in continuous flow mode (hydraulic retention time: 3–5 days). The 100 L-MFC achieved an average chemical oxygen demand (COD) removal efficiency of 52%, which corresponded to a COD removal rate of 530 mg L−1 d−1. Moreover, the 100 L-MFC showed an average and maximum electricity generation of 0.6 and 2.2 Wh m−3, respectively. Our findings suggest that MFCs can effectively be used for swine wastewater treatment coupled with the simultaneous generation of electricity. View Full-Text
Keywords: microbial fuel cells; swine wastewater; graphene oxide microbial fuel cells; swine wastewater; graphene oxide
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MDPI and ACS Style

Goto, Y.; Yoshida, N. Scaling up Microbial Fuel Cells for Treating Swine Wastewater. Water 2019, 11, 1803.

AMA Style

Goto Y, Yoshida N. Scaling up Microbial Fuel Cells for Treating Swine Wastewater. Water. 2019; 11(9):1803.

Chicago/Turabian Style

Goto, Yuko, and Naoko Yoshida. 2019. "Scaling up Microbial Fuel Cells for Treating Swine Wastewater" Water 11, no. 9: 1803.

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