Accession Number : ADA585821


Title :   Mechanism(s) of Electricity Production by Shewanella and other Microbes: Understanding and Optimization


Descriptive Note : Final rept. 2007-2012


Corporate Author : UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF PHYSICS


Personal Author(s) : Nealson, Kenneth H ; El-Naggar, Moh ; Gorby, Yuri ; Finkel, Steven ; Luettge, Andreas


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a585821.pdf


Report Date : 23 Aug 2013


Pagination or Media Count : 20


Abstract : In the five years of this MURI program, we have made major advances in several areas, including: 1) power production optimization; 2) MFC design; 3) identification of the genes coding for the proteins involved with electricity production by Shewanella oneidensis (MR-1); 4) construction of conceptual models of extracellular electron transport (EET); 5) characterization and quantification of the per cell rates of EET to solid substrates; 6) characterization of a previously undescribed behavioral adaptation of microbes to charged surfaces called electrokinesis (and the impact of surface charge on bacterial attachment and biofilm formation); 7) the use of Vertical Scanning Interferometry for cell and biofilm analyses; 8) the design and implementation of a new type of (Deep Ultraviolet Light) microscope for non-invasive studies of microbes on surfaces; 8) detailed biophysical studies of the mechanism of electron transfer in conductive appendages called bacterial nanowires, produced by MR-1 and other Shewanella strains and species; 9) characterization of the selective advantages of Shewanella cells in late stationary phase, and the relationship of this metabolic state to the long term function of MFC systems; and, 10) characterization of the activities of microbes acting as catalysts on the cathodes of MFC systems. During this time, we published over *** reviewed papers, presented over 100 talks at scientific meetings, and collaborated with colleagues from around the world.


Descriptors :   *BACTERIA , *ELECTRIC POWER PRODUCTION , *FUEL CELLS , CELLS(BIOLOGY) , ELECTRON TRANSFER , NANOWIRES


Subject Categories : Microbiology
      Electric Power Production and Distribution
      Electrochemical Energy Storage


Distribution Statement : APPROVED FOR PUBLIC RELEASE