Electricity and hydrogen production using different types of microbial fuel cell technologies

Bruce E. Logan, Hong Liu, Jenna Heilmann, Sang Eun Oh, Shaoan Cheng, Stephen Grot

Research output: Contribution to journalConference article

Abstract

Power density, electrode potential, Coulombic efficiency, and energy recovery in single-chamber microbial fuel cells (MFC) are strongly influenced by solution ionic strength, electrode spacing structure, and temperature. Power output was increased from 720 to 1330 mw/sq m by increasing ionic strength, and to 1210 mw/sq m by decreasing the distance between the anode and cathode from 4 to 2 cm. Decreasing the temperature from 32° to 20°C reduced power output by only 9%, primarily as a result of the reduction of the cathode potential. Coulombic efficiencies were a maximum of 61.4 and 15.1%. Electricity production is not the only product that can be achieved in this type of bio-catalytic system. By adapting the MFC to run under anaerobic conditions, hydrogen can directly be generated using a bio-electrochemically assisted process. This is an abstract of a paper presented at the 230th ACS National Meeting (Washington, DC 8/28/2005-9/1/2005).

Original languageEnglish (US)
JournalACS National Meeting Book of Abstracts
Volume230
StatePublished - Dec 1 2005
Event230th ACS National Meeting - Washington, DC, United States
Duration: Aug 28 2005Sep 1 2005

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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