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AssigneeKinetico Incorporated
InventorsChristopher L. Hansen, Samuel Mason, Mohan L. Sanduja, Carl Horowitz, Felicia Dragnea, Paul Thottathil
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Filtration media having germicidal properties for use in filtering particles and deactivating, removing and/or destroying microorganisms from a feed liquid passing therethrough. The filtration media includes an effective amount of a germicidal chemically grafted and covalently bonded to a surface of the media. The germicidal grafted filter media is prepared by contacting the media with a grafting solution comprising an anionic monomer, a catalyst, a graft initiator and a germicide and subsequently curing tile media at an elevated temperature to chemically graft a polymerized salt of the polymerizable anionic monomer and the cationic germicide onto a surface of the media. Filter media suitable for use in the present invention include ceramic spheroids, hollow glass spheres, polymeric type media and thermoset coated glass spheres. The germicidal grafted filter media is effective for deactivating, destroying and/or removing from a feed liquid, such as water, escherichia coli, salmonella choleraesuis, staphylococcus, aspergsillus, klebisiella, listeria clostridium, rotavirus, cysts and other microorganisms. Moreover, the filter media can be used repeatedly without a decrease in its germicidal effectiveness.
Filtration media having germicidal properties for use in filtering and removing particles and simultaneously destroying, removing and/or deactivating microorganisms from a feed liquid passing therethrough, said filtration media having chemically grafted and covalently bonded thereto in a germicidal effective amount a polymerized salt of a polymerizable anionic monomer and a cationic germicide, wherein said filtration media comprises glass hollow spheres.
The filtration media according to claimed 8 wherein said polymerizable anionic monomer includes a carboxyl functional group.
A method of preparing germicidal grafted filter media comprising:
A method for purifying an aqueous based feed liquid comprising flowing a source feed liquid across filter media wherein said filter media comprises hollow glass spheres which has chemically grafted thereto a polymerized salt of a polymerizable anionic monomer and a cationic germicide whereby said filter media removes particles and destroys, removes and/or deactivates microorganisms in said feed liquid.
Dependencies are inferred from the claim text.