Acid Zirconium Phosphate and Alkaline Hydrous Zirconium Oxide Materials For Sorbent Dialysis
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Abstract
A combination of acid zirconium phosphate and alkaline hydrous zirconium oxide are utilized as ion-exchange materials, for example, in sorbent dialysis. The combination provides for dialysate regeneration while maintaining constant and controlled levels of Na+, HCO3−, and pH.
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50 Claims
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1-30. -30. (canceled)
- 31. An apparatus for conducting dialysis comprising a sorbent cartridge, and a dialyzer in fluid communication with the sorbent cartridge, wherein spent dialysate passes from the dialyzer to and through the sorbent cartridge, and wherein said sorbent cartridge comprising a layer of a mixture of acid zirconium phosphate (AZP) and alkaline hydrous zirconium oxide (NaHZO) in the sorbent cartridge, and wherein said acid zirconium phosphate is the only form of zirconium phosphate present in said layer.
- 34. A dialysis system comprising a sorbent cartridge and a source of spent dialysate, wherein the source of the spent dialysate is in fluid communication with the sorbent cartridge and the spent dialysate passes to and through the sorbent cartridge, and wherein said sorbent cartridge comprising a layer of a mixture of acid zirconium phosphate (AZP) and alkaline hydrous zirconium oxide (NaHZO) in the sorbent cartridge, and wherein said acid zirconium phosphate is the only form of zirconium phosphate present in said layer.
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