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IMMOBILIZATION OF ORGANIC RADIOACTIVE AND NON-RADIOACTIVE LIQUID WASTE IN A COMPOSITE MATRIX

United States Patent Application

20170169907
A1
View the Complete Application at the US Patent & Trademark Office
A method for immobilizing liquid radioactive waste is provided, the method having the steps of mixing waste with polymer to form a non-liquid waste; contacting the non-liquid waste with a solidifying agent to create a mixture, heating the mixture to cause the polymer, waste, and filler to irreversibly bind in a solid phase, and compressing the solid phase into a monolith. The invention also provides a method for immobilizing liquid radioactive waste containing tritium, the method having the steps of mixing liquid waste with polymer to convert the liquid waste to a non-liquid waste, contacting the non-liquid waste with a solidifying agent to create a mixture, heating the mixture to form homogeneous, chemically stable solid phase, and compressing the chemically stable solid phase into a final waste form, wherein the polymer comprises approximately a 9:1 weight ratio mixture of styrene block co-polymers and cross linked co-polymers of acrylamides.
Gelis, Artem V. (Naperville, IL), Castiglioni, Andrew J. (Chicago, IL), Kelly, Dennis (Indianapolis, IN), Galkin, Anatoliy (Almaty, KG), Bachilova, Nadezhda (Almaty, KG), Klepikov, Alexandr (Almaty, KG), Blynskiy, Alexandr (Almaty, KG), Tolebayev, Turgynbek (Almaty, KG)
UCHICAGO ARGONNE, LLC. (Chicago IL)
14/ 967,935
December 14, 2015
CONTRACTUAL ORIGIN OF THE INVENTION [0001] The U.S. Government has rights in this invention pursuant to Contract No. DE-AC02-06CH11357 between the U.S. Department of Energy and UChicago Argonne, LLC, representing Argonne National Laboratory.