Harvesting Energy from Redox Potential Gradients in Sediments and Soils
Final rept. 1 May 1998-31 Dec 1999
RUTGERS - THE STATE UNIV NEW BRUNSWICK NJ INST OF MARINE AND COASTAL SCIENCE
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Pairs of platinum mesh or graphite fiber electrodes, one embedded in marine sediment anode, the other in proximal seawater cathode, have been used to harvest low levels of power from natural, microbe established, voltage gradients at marine sediment-seawater interfaces. The sustained power harvested has been on the order of 0.01 Wm2 of electrode geometric area but is dependent on electrode design, sediment composition, and temperature. It is proposed that the sedimentanode - seawater cathode configuration constitutes a microbial fuel cell in which power results from the net oxidation of sediment organic matter by dissolved seawater oxygen.
- Physical and Dynamic Oceanography
- Geology, Geochemistry and Mineralogy
- Electrochemical Energy Storage