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US 8,758,626 B2Granted
Water purification cartridge using zirconium ion-exchange sorbents
AssigneeFresenius Medical Care Holdings, Inc.
InventorRaymond Wong
Life of this patent
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Abstract
A cartridge having at least one layer containing sodium zirconium phosphate and at least one layer containing a combination of acid zirconium phosphate and alkaline hydrous zirconium oxide is described. Methods of using the cartridge for water purification are also described.
Claims36
A cartridge comprising:
- a first end having an inlet;
- a second end opposing the first end, the second end having an outlet;
- a first layer comprising sodium zirconium phosphate (NaZrP);
- and
- a second layer comprising a combination of acid zirconium phosphate (AZP) and alkaline hydrous zirconium oxide (NaHZO);
- wherein
- the first layer is disposed nearer to the inlet than the second layer, and the second layer succeeds the first layer.
4 more elements
Dependencies are inferred from the claim text.