Process for the selective absorption of anions
OwnerNorman B. Rainerinventor
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Abstract
A process for selectively removing anions from an aqueous solution involves contacting the solution for an effective period of time with a specialized polymer in a porous format. The polymer has ligand sites capable of forming coordination or complexation bonds with multi-valent metal cations which serve to activate the polymer with respect to chemical interaction with anions. The polymer, saturated with the multivalent metal cations, contains between 2% and 20% of metal cation based upon the dry weight of the polymer.
Claims10
A process for the selective removal of anions from aqueous solution comprising contacting said solution with a porous format of an insoluble gel form of an aliphatic polymer having recurring nitrogen atoms spaced apart by two carbon atoms, said polymer containing chemically bonded thereto a substantially saturation amount of a multivalent metal cation representing between 2% and 20% of the dry weight of said polymer, said gel form containing between 90% and 300% of water based upon the dry weight of polymer.
Dependencies are inferred from the claim text.