Peer-Reviewed Journal Details
Mandatory Fields
Katuri, K,Ferrer, ML,Gutierrez, MC,Jimenez, R,del Monte, F,Leech, D
2011
October
Energy & Environmental Science
Three-dimensional microchanelled electrodes in flow-through configuration for bioanode formation and current generation
Published
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Optional Fields
MICROBIAL FUEL-CELLS ANODE-RESPIRING BACTERIA GEOBACTER-SULFURREDUCENS PORE STRUCTURE WASTE-WATER BIOFILM ELECTRICITY SCAFFOLDS NANOPARTICLES TRANSPORT
4
4201
4210
Three-dimensional microchannelled nanocomposite electrodes fabricated by ice-segregation induced self-assembly of chitosan-dispersed multiwall carbon nanotubes are shown to provide a scaffold for growth of electroactive bacteria for use as acetate-oxidizing bioanodes in bioelectrochemical systems. The hierarchical structure provides a conductive surface area available for G. sulfurreducens colonization, with a flow through configuration along the electrode providing a substrate for bacterial colonization and bio-electrochemical processes. This configuration, whilst resulting in sub-monolayer biofilm coverage over the three-dimensional surface, is capable of providing acetate oxidation current densities of up to 24.5 A m(-2), equating to a volumetric current density of 19 kA m(-3), in the flow-through configuration. Such bioanodes, when operated in non-optimized flow-through microbial fuel cell configuration, provide a maximum power density of 2.87 W m(-2), which is equivalent to 2.0 kW m(-3) volumetric power density.
DOI 10.1039/c1ee01477c
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