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Production of electricity during wastewater treatment using a single chamber microbial fuel cell.
Environ Sci Technol. 2004 Apr 01; 38(7):2281-5.ES

Abstract

Microbial fuel cells (MFCs) have been used to produce electricity from different compounds, including acetate, lactate, and glucose. We demonstrate here that it is also possible to produce electricity in a MFC from domestic wastewater, while atthe same time accomplishing biological wastewater treatment (removal of chemical oxygen demand; COD). Tests were conducted using a single chamber microbial fuel cell (SCMFC) containing eight graphite electrodes (anodes) and a single air cathode. The system was operated under continuous flow conditions with primary clarifier effluent obtained from a local wastewater treatment plant. The prototype SCMFC reactor generated electrical power (maximum of 26 mW m(-2)) while removing up to 80% of the COD of the wastewater. Power output was proportional to the hydraulic retention time over a range of 3-33 h and to the influent wastewater strength over a range of 50-220 mg/L of COD. Current generation was controlled primarily by the efficiency of the cathode. Optimal cathode performance was obtained by allowing passive air flow rather than forced air flow (4.5-5.5 L/min). The Coulombic efficiency of the system, based on COD removal and current generation, was < 12% indicating a substantial fraction of the organic matter was lost without current generation. Bioreactors based on power generation in MFCs may represent a completely new approach to wastewater treatment. If power generation in these systems can be increased, MFC technology may provide a new method to offset wastewater treatment plant operating costs, making advanced wastewater treatment more affordable for both developing and industrialized nations.

Authors+Show Affiliations

Department of Civil and Environmental Engineering, The Penn State Hydrogen Energy, (H2E) Center, The Pennsylvania State University, University Park, Pennsylvania, USA.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

15112835

Citation

Liu, Hong, et al. "Production of Electricity During Wastewater Treatment Using a Single Chamber Microbial Fuel Cell." Environmental Science & Technology, vol. 38, no. 7, 2004, pp. 2281-5.
Liu H, Ramnarayanan R, Logan BE. Production of electricity during wastewater treatment using a single chamber microbial fuel cell. Environ Sci Technol. 2004;38(7):2281-5.
Liu, H., Ramnarayanan, R., & Logan, B. E. (2004). Production of electricity during wastewater treatment using a single chamber microbial fuel cell. Environmental Science & Technology, 38(7), 2281-5.
Liu H, Ramnarayanan R, Logan BE. Production of Electricity During Wastewater Treatment Using a Single Chamber Microbial Fuel Cell. Environ Sci Technol. 2004 Apr 1;38(7):2281-5. PubMed PMID: 15112835.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Production of electricity during wastewater treatment using a single chamber microbial fuel cell. AU - Liu,Hong, AU - Ramnarayanan,Ramanathan, AU - Logan,Bruce E, PY - 2004/4/29/pubmed PY - 2004/7/9/medline PY - 2004/4/29/entrez SP - 2281 EP - 5 JF - Environmental science & technology JO - Environ. Sci. Technol. VL - 38 IS - 7 N2 - Microbial fuel cells (MFCs) have been used to produce electricity from different compounds, including acetate, lactate, and glucose. We demonstrate here that it is also possible to produce electricity in a MFC from domestic wastewater, while atthe same time accomplishing biological wastewater treatment (removal of chemical oxygen demand; COD). Tests were conducted using a single chamber microbial fuel cell (SCMFC) containing eight graphite electrodes (anodes) and a single air cathode. The system was operated under continuous flow conditions with primary clarifier effluent obtained from a local wastewater treatment plant. The prototype SCMFC reactor generated electrical power (maximum of 26 mW m(-2)) while removing up to 80% of the COD of the wastewater. Power output was proportional to the hydraulic retention time over a range of 3-33 h and to the influent wastewater strength over a range of 50-220 mg/L of COD. Current generation was controlled primarily by the efficiency of the cathode. Optimal cathode performance was obtained by allowing passive air flow rather than forced air flow (4.5-5.5 L/min). The Coulombic efficiency of the system, based on COD removal and current generation, was < 12% indicating a substantial fraction of the organic matter was lost without current generation. Bioreactors based on power generation in MFCs may represent a completely new approach to wastewater treatment. If power generation in these systems can be increased, MFC technology may provide a new method to offset wastewater treatment plant operating costs, making advanced wastewater treatment more affordable for both developing and industrialized nations. SN - 0013-936X UR - https://www.unboundmedicine.com/medline/citation/15112835/Production_of_electricity_during_wastewater_treatment_using_a_single_chamber_microbial_fuel_cell_ L2 - https://dx.doi.org/10.1021/es034923g DB - PRIME DP - Unbound Medicine ER -