Biotechnology Letters

, Volume 33, Issue 4, pp 705–714

Performance of microbial fuel cell with volatile fatty acids from food wastes

Authors

  • Jin-dal-rae Choi
    • Department of Chemical and Biomolecular EngineeringKAIST
  • Ho Nam Chang
    • Department of Chemical and Biomolecular EngineeringKAIST
    • Department of Civil and Environmental EngineeringKAIST
Original Research Paper

DOI: 10.1007/s10529-010-0507-2

Cite this article as:
Choi, J., Chang, H.N. & Han, J. Biotechnol Lett (2011) 33: 705. doi:10.1007/s10529-010-0507-2

Abstract

Food wastes were used as feedstock for the direct production of electricity in a microbial fuel cell (MFC). MFC operations with volatile fatty acids (VFA) produced 533 mV with a maximum power density of 240 mW/m2. Short-chain VFAs, such as acetate, were degraded more rapidly and thus supported higher power generation than longer chain ones. In general, the co-existence of other, different VFAs slowed the removal of each VFA, which indicated that anodic microbes were competing for different substrates. 16S rRNA gene analysis using PCR-DGGE indicated that the MFC operation with VFAs had enriched unique microbial species.

Keywords

Food wasteMicrobial fuel cellOstrich dung inoculumVolatile fatty acid

Copyright information

© Springer Science+Business Media B.V. 2010