Jump to main content
Jump to site search

Issue 10, 2011
Previous Article Next Article

Three-dimensional microchanelled electrodes in flow-through configuration for bioanode formation and current generation

Author affiliations

Abstract

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.

Graphical abstract: Three-dimensional microchanelled electrodes in flow-through configuration for bioanode formation and current generation

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 15 Apr 2011, accepted on 20 Jul 2011 and first published on 06 Sep 2011


Article type: Paper
DOI: 10.1039/C1EE01477C
Citation: Energy Environ. Sci., 2011,4, 4201-4210
  •   Request permissions

    Three-dimensional microchanelled electrodes in flow-through configuration for bioanode formation and current generation

    K. Katuri, M. L. Ferrer, M. C. Gutiérrez, R. Jiménez, F. del Monte and D. Leech, Energy Environ. Sci., 2011, 4, 4201
    DOI: 10.1039/C1EE01477C

Search articles by author