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Microfiltration membrane performance in two-chamber microbial fuel cells

Paper ID Volume ID Publish Year Pages File Format Full-Text
3890 197 2010 5 PDF Available
Title
Microfiltration membrane performance in two-chamber microbial fuel cells
Abstract

Proton exchange membranes (PEMs) are typically used in two-chamber microbial fuel cells (MFCs) to separate the anode and cathode chambers while allowing protons to pass between the chambers. However, PEMs such as Nafion are not cost-effective. To reduce the cost of MFCs, we examined the performances of cellulose acetate microfiltration membranes in a two-chamber microbial fuel cell using acetate. The internal resistance, the maximum power density and the coulombic efficiency (CE) of the microfiltration membrane MFC (MMMFC) were 263 Ω, 0.831 ± 0.016 W/m2 and 38.5 ± 3.5%, respectively, in a fed-batch mode, while the corresponding values of the MFC using a PEM were 267 Ω, 0.872 ± 0.021 W/m2 and 74.7 ± 4.6%, respectively. We further used the MMMFC for poultry wastewater treatment. The maximum power density of 0.746 ± 0.024 W/m2 and CE of 35.3 ± 3.2% were achieved when the poultry wastewater containing 566 mg/L COD was used, removing 81.6 ± 6.6% of the COD. These results demonstrate microfiltration membranes, compared with PEMs, have a similar internal resistance and reduce pH gradient across the membrane. They parallel PEMs in maximum power density, while CE is much lower due to the oxygen and substrate diffusion. The MMMFC was effective for poultry wastewater treatment with high COD removal.

Keywords
Microfiltration membrane; Microbial fuel cell; COD; Coulombic efficiency; Power density; Proton exchange membranes
First Page Preview
Microfiltration membrane performance in two-chamber microbial fuel cells
Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 52, Issues 2–3, 15 November 2010, Pages 194–198
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering