Laminar flow-based biofuel cells: Independent control of pH at the anode and cathode for optimal electrode activity

Seong Kee Yoon, Michael Mitchell, Ranga S. Jayashree, Paul J.A. Kenis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A membraneless microfluidic fuel cells that exploit laminar flow at the microscale to separate the fuel and oxidant streams is presented. Because the streams mix only by diffusion, fuel and oxidant streams of different pH can be used such that the anode and cathode both operate at their optimal pH. One issue with biofuel cells, however, is the fact that different enzymes have optimal activity at different pH. Using a fixed pH electrolyte may maximize the enzyme activity at one electrode while resulting in poor enzyme activity (or even denaturing of the enzyme) at the electrode. An experiment in designing and operating laminar flow biofuel cells that are run using alcohol and oxygen, with buffered alcohol solution (pH ∼ 7) and aqueous sulfuric acid solution (pH ∼ 0) as the anolyte and catholyte, respectively, is presented. This is an abstract of a paper presented at the 2005 AIChE Annual Meeting and Fall Showcase (Cincinnati, OH 10/30/2005-11/4/2005).

Original languageEnglish (US)
Title of host publication05AIChE
Subtitle of host publication2005 AIChE Annual Meeting and Fall Showcase, Conference Proceedings
PublisherAmerican Institute of Chemical Engineers
ISBN (Print)0816909962, 9780816909964
StatePublished - Jan 1 2005
Externally publishedYes
Event05AIChE: 2005 AIChE Annual Meeting and Fall Showcase - Cincinnati, OH, United States
Duration: Oct 30 2005Nov 4 2005

Publication series

NameAIChE Annual Meeting Conference Proceedings
Volume2005

Other

Other05AIChE: 2005 AIChE Annual Meeting and Fall Showcase
CountryUnited States
CityCincinnati, OH
Period10/30/0511/4/05

ASJC Scopus subject areas

  • Energy(all)

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  • Cite this

    Yoon, S. K., Mitchell, M., Jayashree, R. S., & Kenis, P. J. A. (2005). Laminar flow-based biofuel cells: Independent control of pH at the anode and cathode for optimal electrode activity. In 05AIChE: 2005 AIChE Annual Meeting and Fall Showcase, Conference Proceedings (AIChE Annual Meeting Conference Proceedings; Vol. 2005). American Institute of Chemical Engineers.