Mechanism(s) of Electricity Production by Shewanella and Other Microbes: Understanding and Optimization
Final rept. 2007-2012
UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF BIOLOGICAL SCIENCES
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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.
- Electrical and Electronic Equipment
- Electric Power Production and Distribution