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Method for the removal of ultrafine particulates from an aqueous suspension

United States Patent

November 28, 2000
View the Complete Patent at the US Patent & Trademark Office
Argonne National Laboratory - Visit the Technology Development and Commercialization Website
A method of separating ultra-fine particulates from an aqueous suspension such as a process stream or a waste stream. The method involves the addition of alkali silicate and an organic gelling agent to a volume of liquid, from the respective process or waste stream, to form a gel. The gel then undergoes syneresis to remove water and soluble salts from the gel containing the particulates, thus, forming a silica monolith. The silica monolith is then sintered to form a hard, nonporous waste form.
Chaiko; David J. (Naperville, IL), Kopasz; John P. (Bolingbrook, IL), Ellison; Adam J. G. (Corning, NY)
The United States of America as represented by the United States Department of Energy (Washington, DC)
09/ 264,152
March 5, 1999
CONTRACTUAL ORIGIN OF THE INVENTION The United States Government has rights in this invention pursuant to Contract No. W-31-109-ENG-38 between the U.S. Department of Energy and the University of Chicago.