Hazardous or toxic waste destruction or containment – Destruction or containment of radioactive waste – By fixation in stable solid media
Reexamination Certificate
2006-12-12
2006-12-12
Cooke, Colleen P. (Department: 1754)
Hazardous or toxic waste destruction or containment
Destruction or containment of radioactive waste
By fixation in stable solid media
C510S110000, C423S007000
Reexamination Certificate
active
07148393
ABSTRACT:
A surface contaminated by a radioactive isotope is cleaned by applying to it a solution that contains an ion-specific resin that is weakly bonded to an ion and a weak anion solution including a carrier, water, and an ion that frees the radioactive isotope from the contaminated surface. The radioactive isotope bonds with the ion-specific resin, replacing the ion weakly bonded to said ion-specific resin. In a preferred embodiment, the ion-specific resin is made in the counterion form of citrate, the ion that is weakly bonded to the ion-specific resin is citrate, the carrier is glycerin, the water is de-ionized or distilled, and the ion that frees the radioactive isotope from the contaminated surface is salicylate.
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DOW brochure, “DOWEX Ion Exchange Resins-Using Ion Exchange Resin Selectivity Coefficients”, Form No. 177-01755-1104, 3-pp. (available at www.dow.com/PublishedLiterature/dh—038d/09002f138038db4e.pdf on Jan. 18, 2006), date presumably prior to Apr. 22, 2003.
J.H. Kuperus et al., “Radiological Decontamination: Lab Demonstration On Various Surfaces Using Ion-Exchange Technology”, WM '04 Conference, Feb. 29-Mar. 4, 2004, Tucson, AZ, 7-pp. (available at http://www.raddecon.com/JKuperusarticle4441.pdf on Jan. 18, 2006).
Cooke Colleen P.
Miller Stanley M
Radiation Decontamination Solutions, LLC
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