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Process for modifying the metal ion sorption capacity of a medium

United States Patent

August 20, 2002
View the Complete Patent at the US Patent & Trademark Office
A process for modifying a medium is disclosed that includes treating a medium having a metal ion sorption capacity with a solution that includes: A) an agent capable of forming a complex with metal ions; and B) ions selected from the group consisting of sodium ions, potassium ions, magnesium ions, and combinations thereof, to create a medium having an increased capacity to sorb metal ions relative to the untreated medium.
Lundquist; Susan H. (White Bear Township, MN)
3M Innovative Properties Company (St. Paul, MN)
09/ 199,296
November 24, 1998
STATEMENT AS TO FEDERALLY SPONSORED RESEARCH The invention was made with Government support under Contract DE-AR21-96MC-33089 awarded by the Department of Energy. The Government has certain rights in the invention.