Heavy metal removal process
AssigneeCuno Incorporated
InventorsWei-Chih Chen, Michael A. Michaud, Kenneth C. Hou
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Abstract
An ion-exchange media comprising a modified polysaccharide material and a modified particulate polymeric material, said modified materials comprising a polysaccharide and particulate polymeric materials covalently bonded to a synthetic polymer, said synthetic polymer comprising a copolymer made from a polymerization of: (a) a polymerizable compound having a chemical group capable of covalently coupling, directly or indirectly, to said materials; and (b) a polymerizable compound containing (i) an ionizable chemical group or (ii) a chemical group capable of transformation to an ionizable chemical group. The media is useful to selectively remove heavy metal contaminants from aqueous solutions containing said contaminants.
Claims11
A method of removing heavy metal ions from an aqueous solution contaminated therewith comprising contacting said aqueous solution with an ion-exchange media comprising a modified polysaccharide material and a modified particulate polymer material, said modified materials comprising a polysaccharide and particulate polymer material covalently bonded to a synthetic polymer, said synthetic polymer comprising a copolymer produced from a polymerization of:
- (a) a polymerizable compound having a chemical group capable of covalently coupling, directly or indirectly, to said materials;
- and
- (b) a polymerizable compound containing (i) an ionizable chemical group or (ii) a chemical group capable of transformation to an ionizable chemical group.
Dependencies are inferred from the claim text.