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Researchers Develop New Geobacter Microbe Strain to Produce More Electricity, Open New Applications

In their most recent experiments with Geobacter, the sediment-loving microbe whose hairlike filaments help it to produce electric current from mud and wastewater, Derek Lovley and colleagues at the University of Massachusetts Amherst supervised the evolution of a new strain that dramatically increases power output per cell and overall bulk power. It also works with a thinner biofilm than earlier strains, cutting the time to reach electricity-producing concentrations on the electrode.

“This new study shows that output can be boosted and it gives us good insights into what it will take to genetically select a higher-power organism.” The work, supported by the Office of Naval Research and the U.S. Department of Energy, is described in the August issue of the journal, Biosensors and Bioelectronics, now available online.
 
 

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