Accession Number:

ADA393630

Title:

Harvesting Energy from Redox Potential Gradients in Sediments and Soils

Descriptive Note:

Final rept. 1 May 1998-31 Dec 1999

Corporate Author:

RUTGERS - THE STATE UNIV NEW BRUNSWICK NJ INST OF MARINE AND COASTAL SCIENCE

Personal Author(s):

Report Date:

1999-12-01

Pagination or Media Count:

3.0

Abstract:

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.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Geology, Geochemistry and Mineralogy
  • Electrochemical Energy Storage

Distribution Statement:

APPROVED FOR PUBLIC RELEASE