Composite ion exchange media for liquid filtration systems
Assignee3M Innovative Properties Company
InventorMark R. Stouffer
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Abstract
Provided are filtration media and matrixes comprising a pulverized powder of ion exchange resin and a polymeric binder. The resin can be pulverized to an average particle size in the range of 50 to 250 microns and can comprise a cation exchange resin, an anion exchange resin, a chelating resin, a biologically-related ion exchange resin, or combinations thereof. The media can further comprise activated carbon. The binder can be ultra high molecular weight polyethylene. The filtration media can be used to make matrixes and systems. Methods of making and using the same are also provided.
Claims11
A block comprising a filtration matrix comprising a polymeric binder that immobilizes a pulverized powder of an ion exchange resin;
- the polymeric binder and the pulverized powder of the ion exchange resin having point-to-point bonds in the block formed by a mold compression step of the filtration matrix;
- the polymeric binder present in an amount in the range of 10% to 40% by weight and the pulverized powder of the ion exchange resin present in an amount of 50% to 90% by weight;
- the pulverized powder of the ion exchange resin having an average particle size in the range of about 50 to about 250 micron;
- wherein the ion exchange resin comprises a cation exchange resin, an anion exchange resin, a chelating exchange resin, a biologically-related ion exchange resin, or combinations thereof;
- and wherein water passes radially through the block.
Dependencies are inferred from the claim text.