Journal
BIORESOURCE TECHNOLOGY
Volume 143, Issue -, Pages 147-153Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.05.116
Keywords
Bioelectrochemical system; Microbial fuel cell; Oxalate degradation; PCR-DGGE; qPCR
Funding
- Spanish Ministry of Science and Innovation (MICINN) [CTM2009-12632]
- Ministry of Education (Spain)
- European Research Council (ERC)
- Centre for Microbial Electrosynthesis (CEMES, The University of Queensland)
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The aim of this work was to investigate the feasibility of using oxalate at the anode in a continuous reactor. Complete oxalate removal was observed, albeit at a maximum coulombic efficiency of 33.9 +/- 0.4%. At the cathode side, there was an increase in pH from 8 to 11 showing production of caustic. Analysis of the microbial community demonstrated a clear shift during reactor start-up, resulting in enrichment of microorganisms belonging to Bacteroidetes, Firmicutes, Mollicutes, and beta and gamma-Proteobacteria. Methane was produced throughout the experiment; Archaea belonging to the Methanosarcinacea, Methanomicrobiaceae and Methanosaetaceae were identified as key representatives. (C) 2013 Elsevier Ltd. All rights reserved.
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