Lisa D Edwards

US Patent:

20120088949, Apr 12, 2012

Filed:

Oct 6, 2011

Appl. No.:

13/267603

Inventors:

Dennis Frank Hussey - Emerald Hills CA, US
David Bradbury - Tresham, GB
George Richard Elder - Westbury-on-Severn, GB
Lisa Maxine Edwards - Granbury TX, US

Assignee:

Electric Power Research Institute, Inc. - Palo Alto CA

International Classification:

G21F 9/12
G21F 9/06

US Classification:

588 18, 588 20

Abstract:

A method of processing ion exchange resin radioactive waste, wherein the radioactive waste contains a plurality of fractions of radioactive waste based on density, which may include cation resin waste and anion resin waste, wherein at least one of the plurality of fractions comprises a total concentration of at least one radionuclide, including performing at least one of the following operations (i), (ii) or (iii): (i) separating the at least one of the plurality of fractions from the radioactive waste utilizing a moving freeboard; (ii) separating the radioactive waste into cation resin waste and anion resin waste; or (iii) removing at least a portion of the total concentration of the at least one radionuclide from: the radioactive waste; the at least one of the plurality of fractions separated by the moving freeboard; or at least one of the radioactive waste, the cation resin waste or the anion resin waste.

US Patent:

20120184796, Jul 19, 2012

Filed:

Nov 23, 2011

Appl. No.:

13/303218

Inventors:

Paul L. Frattini - Los Altos CA, US
Roger Howard Asay - Salinas CA, US
Keith Paul Fruzzetti - San Jose CA, US
Susan Elaine Garcia - Paso Robles CA, US
Leon Yengoyan - San Jose CA, US
Lisa Maxine Edwards - Granbury TX, US

Assignee:

ELECTRIC POWER RESEARCH INSTITUTE, INC. - Charlotte NC

International Classification:

G21F 9/12

US Classification:

588 6

Abstract:

The present invention relates to a method of capturing radioactive species in an aqueous solution and removing the radioactive species for disposal. The method includes the steps of providing a macroporous bead form sequestration resin, subjecting the bead form sequestration resin to radioactive species contained in the aqueous solution to allow the bead form sequestration resin to capture the radioactive species; and disposing the radioactive species in a radioactive storage facility.