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Three dimensional electrode for the electrolytic removal of contaminants from aqueous waste streams

United States Patent

October 9, 2001
View the Complete Patent at the US Patent & Trademark Office
Efficient and cost-effective electrochemical devices and processes for the remediation of aqueous waste streams. The invention provides electrolytic cells having a high surface area spouted electrode for removal of heavy metals and oxidation of organics from aqueous environments. Heavy metal ions are reduced, deposited on cathode particles of a spouted bed cathode and removed from solution. Organics are efficiently oxidized at anode particles of a spouted bed anode and removed from solution. The method of this inventions employs an electrochemical cell having an anolyte compartment and a catholyte compartment, separated by a microporous membrane, in and through which compartments anolyte and catholyte, respectively, are circulated. A spouted-bed electrode is employed as the cathode for metal deposition from contaminated aqueous media introduced as catholyte and as the anode for oxidation of organics from contaminated aqueous media introduced as anolyte.
Spiegel; Ella F. (Louisville, CO), Sammells; Anthony F. (Boulder, CO)
Eltron Research, Inc. (Boulder, CO)
09/ 496,557
February 2, 2000
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made through US government funding under Department of Energy Grant No. DE-FG03-97ER82363. The United States government has certain rights in this invention.