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.
Claims17
A filtration matrix comprising a polymeric binder that immobilizes a pulverized powder of an 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 cationic resin, an anionic resin, a chelating resin, a biologically-related ion exchange resin, or combinations thereof.
A filtration system comprising:
- a filter matrix formed from an ultra high molecular weight polyethylene binder that immobilizes a pulverized powder of ion exchange resin having an average particle size in the range of about 50 to about 250 micron and comprising a cation exchange resin, an anion exchange resin, a chelating resin, a biologically-related ion exchange resin, or combinations thereof,
- a housing surrounding the filter matrix,
- a fluid inlet, and
- a fluid outlet.
A method of making a filtration system, the method comprising:
- providing a pulverized powder of ion exchange resin having an average particle size in the range of about 50 to about 250 micron and comprising a cation exchange resin, an anion exchange resin, a chelating resin, a biologically-related ion exchange resin, or combinations thereof;
- contacting the pulverized powder of ion exchange resin with a polymeric binder comprising ultra high molecular weight polyethylene to form a media mixture;
- heating the media mixture form a heat-treated matrix;
- compressing the media mixture to form a filtration block;
- inserting the filtration block in a housing to form the filtration system.
Dependencies are inferred from the claim text.