Performance of low cost scalable air-cathode microbial fuel cell made from clayware separator using multiple electrodes.

Performance of scalable air-cathode microbial fuel cell (MFC) of 26 L volume, made from clayware cylinder with multiple electrodes, was evaluated. When electrodes were connected in parallel with 100 Ω resistance (R ext), power of 11.46 mW was produced which was 4.48 and 3.73 times higher than individual electrode pair and series connection, respectively. Coulombic efficiency of 5.10 ± 0.13% and chemical oxygen demand (COD) removal of 78.8 ± 5.52% was observed at R ext of 3 Ω. Performance under different organic loading rates (OLRs) varying from 0.75 to 6.0 g CODL(-1)d(-1) revealed power of 17.85 mW (47.28 mA current) at OLR of 3.0 g CODL(-1)d(-1). Internal resistance (R int) of 5.2 Ω observed is among the least value reported in literature. Long term operational stability (14 months) demonstrates the technical viability of clayware MFC for practical applications and potential benefits towards wastewater treatment and electricity recovery.

[1]  Willy Verstraete,et al.  Microbial fuel cells: performances and perspectives , 2005 .

[2]  Hang-sik Shin,et al.  Effects of organic loading rates on the continuous electricity generation from fermented wastewater using a single-chamber microbial fuel cell. , 2010, Bioresource technology.

[3]  A. E. Greenberg,et al.  Standard Methods for the Examination of Water and Wastewater seventh edition , 2013 .

[4]  Byung-Geun Lee,et al.  Voltage increase of microbial fuel cells with multiple membrane electrode assemblies by in series connection , 2013 .

[5]  W. Verstraete,et al.  Loading rate and external resistance control the electricity generation of microbial fuel cells with different three-dimensional anodes. , 2008, Bioresource technology.

[6]  M M Ghangrekar,et al.  Performance evaluation of low cost microbial fuel cell fabricated using earthen pot with biotic and abiotic cathode. , 2010, Bioresource technology.

[7]  Fei Liu,et al.  Performance of a scaled-up Microbial Fuel Cell with iron reduction as the cathode reaction , 2011 .

[8]  Sean F. Covalla,et al.  Power output and columbic efficiencies from biofilms of Geobacter sulfurreducens comparable to mixed community microbial fuel cells. , 2008, Environmental microbiology.

[9]  Ian M. Head,et al.  On the repeatability and reproducibility of experimental two-chambered microbial fuel cells , 2009 .

[10]  Prakash C. Ghosh,et al.  Multi-electrode microbial fuel cell (MEMFC): A close analysis towards large scale system architecture , 2013 .

[11]  Baikun Li,et al.  A pilot-scale study on utilizing multi-anode/cathode microbial fuel cells (MAC MFCs) to enhance the power production in wastewater treatment , 2011 .

[12]  Shungui Zhou,et al.  Long-term evaluation of a 10-liter serpentine-type microbial fuel cell stack treating brewery wastewater. , 2012, Bioresource technology.

[13]  M. Ghangrekar,et al.  Performance of microbial fuel cell subjected to variation in pH, temperature, external load and substrate concentration. , 2009, Bioresource technology.

[14]  Huei-Yin Chou,et al.  Effects of microbial species, organic loading and substrate degradation rate on the power generation capability of microbial fuel cells , 2011, Biotechnology Letters.

[15]  B. Logan,et al.  Electrochemical study of multi-electrode microbial fuel cells under fed-batch and continuous flow conditions , 2014 .

[16]  K. Scott,et al.  Effect of chemically modified Vulcan XC-72R on the performance of air-breathing cathode in a single-chamber microbial fuel cell. , 2010, Bioresource technology.

[17]  Weihua He,et al.  A horizontal plug flow and stackable pilot microbial fuel cell for municipal wastewater treatment. , 2014, Bioresource technology.

[18]  Bruce E. Logan,et al.  Analysis of polarization methods for elimination of power overshoot in microbial fuel cells , 2011 .