Skip to Content
Find More Like This
Return to Search

Removal of radioactive and other hazardous material from fluid waste

United States Patent

October 3, 2006
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
Hollow glass microspheres obtained from fly ash (cenospheres) are impregnated with extractants/ion-exchangers and used to remove hazardous material from fluid waste. In a preferred embodiment the microsphere material is loaded with ammonium molybdophosphonate (AMP) and used to remove radioactive ions, such as cesium-137, from acidic liquid wastes. In another preferred embodiment, the microsphere material is loaded with octyl(phenyl)-N-N-diisobutyl-carbamoylmethylphosphine oxide (CMPO) and used to remove americium and plutonium from acidic liquid wastes.
Tranter; Troy J. (Idaho Falls, ID), Knecht; Dieter A. (Idaho Falls, ID), Todd; Terry A. (Aberdeen, ID), Burchfield; Larry A. (W. Richland, WA), Anshits; Alexander G. (Krasnoyarsk, RU), Vereshchagina; Tatiana (Krasnoyarsk, RU), Tretyakov; Alexander A. (Zheleznogorsk, RU), Aloy; Albert S. (St. Petersburg, RU), Sapozhnikova; Natalia V. (St. Petersburg, RU)
The United States of America as represented by the United States Department of Energy (Washington, DC), N/A (
10/ 748,913
December 11, 2003
CONTRACTUAL ORIGIN This invention was made with government support under a contract awarded by the U.S. Department of Energy. The U.S. Government has certain rights in the invention.