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Aluminum phosphate ceramics for waste storage

United States Patent

8,742,195
June 3, 2014
View the Complete Patent at the US Patent & Trademark Office
Argonne National Laboratory - Visit the Technology Development and Commercialization Website
The present disclosure describes solid waste forms and methods of processing waste. In one particular implementation, the invention provides a method of processing waste that may be particularly suitable for processing hazardous waste. In this method, a waste component is combined with an aluminum oxide and an acidic phosphate component in a slurry. A molar ratio of aluminum to phosphorus in the slurry is greater than one. Water in the slurry may be evaporated while mixing the slurry at a temperature of about 140-200.degree. C. The mixed slurry may be allowed to cure into a solid waste form. This solid waste form includes an anhydrous aluminum phosphate with at least a residual portion of the waste component bound therein.
Wagh; Arun (Naperville, IL), Maloney; Martin D. (Evergreen, CO)
CH2M Hill, Inc. (Englewood, CO)
10/ 547,100
20080119682
February 26, 2004
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH The United States Government has rights in this invention pursuant to contract number W-31-109-ENG-38 between the United States Department of Energy and the University of Chicago, representing Argonne National Laboratory, and CRADA Number 0200201 between Argonne National Laboratory and CH2M HILL, Inc.