Patent ID: 11925737
Assignee: BAXTER INTERNATIONAL INC.
Field: Chemical engineering (Chemistry)
Classification: CPC A  B  C | IPC A  B  C

Claim 18:
19. A hemodialysis system comprising:
a blood circuit and a dialysis fluid circuit, wherein the dialysis fluid circuit is in fluid communication with a device that removes urea from the used dialysis fluid having urea to produce a cleansed dialysis fluid, the device including:
a urea decomposition unit comprising:
an alkaline polymeric gel:
an inlet for entry of used dialysis fluid having urea;
an outlet for outputting cleansed dialysis fluid;
a first set of electrodes including an anode and a cathode having an electrocatalytic surface on the anode for decomposition of urea via electrooxidation, wherein the anode of the first set of electrodes comprises cobalt, copper, iron, nickel, platinum, palladium, iridium, ruthenium, rhodium, mixtures thereof, or alloys thereof; and
an electrodialysis unit comprising a second set of electrodes including a cathode, an anode having an electrocatalytic surface on the anode for separation of a salt solution via electrodialysis, and at least two of a bipolar membrane, a cation exchange membrane, and an anion exchange membrane between the anode and the cathode of the second set of electrodes, wherein the salt solution is separated into an acid stream and a basic stream,
wherein at least one of (i) the basic stream from the electrodialysis unit is placed in fluid communication with the inlet of the urea decomposition unit, (ii) the acid stream from the electrodialysis unit is placed in fluid communication with the outlet of the urea decomposition unit, or (iii) the acid stream is circulated through the electrodialysis unit, and wherein the at least one of (i) to (iii) aids in forming the cleansed dialysis fluid outputted from the urea decomposition unit.