title: Microbial-enzymatic-hybrid biological fuel cell with optimized growth conditions for Shewanella oneidensis DSP-10.
abstract: In this work we present a biological fuel cell fabricated by combining a Shewanella oneidensis microbial anode and a laccase-modified air-breathing cathode. This concept is devised as an extension to traditional biochemical methods by incorporating diverse biological catalysts with the aim of powering small devices. In preparing the biological fuel cell anode, novel hierarchical-structured architectures and biofilm configurations were investigated. A method for creating an artificial biofilm based on encapsulating microorganisms in a porous, thin film of silica was compared with S. oneidensis biofilms that were allowed to colonize naturally. Results indicate comparable current and power densities for artificial and natural biofilm formations, based on growth characteristics. As a result, this work describes methods for creating controllable and reproducible bio-anodes and demonstrates the versatility of hybrid biological fuel cells.
authors.affiliation: Department of Chemical & Nuclear Engineering, Center for Emerging Energy Technologies, The University of New Mexico, Albuquerque, New Mexico 87131, USA.
authors.forename: Jared N
authors.initials: JN
authors.lastname: Roy
authors.forename: Heather R
authors.initials: HR
authors.lastname: Luckarift
authors.forename: Susan R
authors.initials: SR
authors.lastname: Sizemore
authors.forename: Karen E
authors.initials: KE
authors.lastname: Farrington
authors.forename: Carolin
authors.initials: C
authors.lastname: Lau
authors.forename: Glenn R
authors.initials: GR
authors.lastname: Johnson
authors.forename: Plamen
authors.initials: P
authors.lastname: Atanassov
mesh_terms: D001674:Bioelectric Energy Sources / Q000382:microbiology*; D018441:Biofilms / Q000254:growth & development*; D018533:Biomass; D001709:Biotechnology / Q000379:methods; D004563:Electrochemistry; D004566:Electrodes; D017348:Microscopy, Electron, Scanning Transmission; D020592:Shewanella / Q000145:classification / Q000201:enzymology* / Q000254:growth & development* / Q000648:ultrastructure; D012822:Silicon Dioxide
chemical_list: D012822:Silicon Dioxide