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Issue 24, 2014
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Flow dependent performance of microfluidic microbial fuel cells

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The integration of Microbial Fuel Cells (MFCs) in a microfluidic geometry can significantly enhance the power density of these cells, which would have more active bacteria per unit volume. Moreover, microfluidic MFCs can be operated in a continuous mode as opposed to the traditional batch-fed mode. Here we investigate the effect of fluid flow on the performance of microfluidic MFCs. The growth and the structure of the bacterial biofilm depend to a large extent on the shear stress of the flow. We report the existence of a range of flow rates for which MFCs can achieve maximum voltage output. When operated under these optimal conditions, the power density of our microfluidic MFC is about 15 times that of a similar-size batch MFC. Furthermore, this optimum suggests a correlation between the behaviour of bacteria and fluid flow.

Graphical abstract: Flow dependent performance of microfluidic microbial fuel cells

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The article was received on 13 mar. 2014, accepted on 07 maí 2014 and first published on 08 maí 2014

Article type: Paper
DOI: 10.1039/C4CP01086H
Phys. Chem. Chem. Phys., 2014,16, 12535-12543

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    Flow dependent performance of microfluidic microbial fuel cells

    D. Vigolo, T. T. Al-Housseiny, Y. Shen, F. O. Akinlawon, S. T. Al-Housseiny, R. K. Hobson, A. Sahu, K. I. Bedkowski, T. J. DiChristina and H. A. Stone, Phys. Chem. Chem. Phys., 2014, 16, 12535
    DOI: 10.1039/C4CP01086H

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