Electricity production from pentose using a mediator-less microbial fuel cell

Huang, Liping, Zeng , Raymond J. and Angelidaki, Irini (2008) Electricity production from pentose using a mediator-less microbial fuel cell. Bioresource Technology, 99 10: 4178-4184. doi:10.1016/j.biortech.2007.08.067

Author Huang, Liping
Zeng , Raymond J.
Angelidaki, Irini
Title Electricity production from pentose using a mediator-less microbial fuel cell
Journal name Bioresource Technology   Check publisher's open access policy
ISSN 0960-8524
Publication date 2008-07
Sub-type Article (original research)
DOI 10.1016/j.biortech.2007.08.067
Volume 99
Issue 10
Start page 4178
End page 4184
Total pages 7
Place of publication Barking, U.K.
Publisher Elsevier Science
Language eng
Subject 100299 Environmental Biotechnology not elsewhere classified
Abstract Electricity generation integrated with xylose degradation was investigated in a two-chamber mediator-less microbial fuel cell (MFC). Voltage output followed saturation kinetics as a function of xylose concentration for concentration below 9.7 mM, with a predicted maximum of 86 mV (6.3 mW m2 or 116 mW m3) and half-saturation constant (Ks) of 0.29 mM. Xylose concentrations from 0.5 mM to 1.5 mM resulted in coulombic efficiencies and maximum voltage ranging from 41 ± 1.6% to 36 ± 1.2% and 55 ± 2.0 mV to 70 ± 3.0 mV respectively. Xylose degradation rate increased with increasing xylose concentration up to 9.7 mM and the predicted maximum degradation rate was 0.13 mM h1 and Ks of 3.0 mM. Stirring by nitrogen in the anode chamber led to 99 ± 2.3 mV maximum voltage (8.4 ± 0.4 mW m2 or 153 ± 7.1 mW m3) and 5.9 ± 0.3% coulombic efficiency at MFC running time 180 h, which were respectively 17 ± 1.2% and 37 ± 1.8%, higher than those without stirring. The COD removal under stirring was 22.1 ± 0.3%, which was slightly lower than that of 23.7 ± 0.4% under no stirring. However, stirring resulted in 59% lower xylose degradation rate. This work demonstrates that xylose can be used in the MFC for electricity production. Comparatively higher electricity generation and coulombic efficiency can be obtained by adjusting initial xylose concentration and applying stirring in the anode chamber. 2007 Elsevier Ltd. All rights reserved.
Keyword Microbial fuel cell
Voltage output
Stirring by nitrogen
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Advanced Water Management Centre Publications
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