Microbial fuel cells operating on mixed fatty acids

Freguia, Stefano, Teh, Ee Hoi, Boon, Nick, Leung, Kar Man, Keller, Jurg and Rabaey, Korneel (2010) Microbial fuel cells operating on mixed fatty acids. Bioresource Technology, 101 4: 1233-1238. doi:10.1016/j.biortech.2009.09.054


Author Freguia, Stefano
Teh, Ee Hoi
Boon, Nick
Leung, Kar Man
Keller, Jurg
Rabaey, Korneel
Title Microbial fuel cells operating on mixed fatty acids
Journal name Bioresource Technology   Check publisher's open access policy
ISSN 0960-8524
Publication date 2010-02
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.biortech.2009.09.054
Volume 101
Issue 4
Start page 1233
End page 1238
Total pages 6
Editor A Pandey
C Larroche
S C Ricke
Place of publication Netherlands
Publisher Elsevier BV, North Holland
Collection year 2010
Language eng
Subject C1
Abstract Strategies are being developed to harvest the energy content of the wasted sludge generated from the treatment of domestic wastewater. Sludge can be hydrolysed and fermented, giving a mixture of volatile fatty acids (VFAs). Based on the composition of such a fermented stream, synthetic media were created and tested for VFA conversion in microbial fuel cells (MFCs). Mainly acetate and propionate were preferred as electron donors in the mixed VFA system, which generated a power density of . The other VFAs (butyrates/valerates/caproic acid) were also removed, albeit at lower rates. In single VFA tests, each VFA could be removed, but particularly i-butyrate did not provide significant current generation. PCR–DGGE indicated that the microbial community structure was highly determined by the fed VFA, rather than by the initial inoculum. The communities were dominated by Proteobacteria such as Geobacter, Comamonas, Pseudomonas and Pelobacter species. This study demonstrated the feasibility of using fatty acids, as present in fermented sludge hydrolysates, for current generation.
Keyword Microbial
mixed fatty acid
Sludge
VFAs
Proteobacteria
Geobacter
Comamonas
pseudomonas
pelobacter
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Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
Advanced Water Management Centre Publications
 
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Created: Mon, 19 Apr 2010, 15:52:39 EST by Hong Lee on behalf of Advanced Water Management Centre