Devices for urea electrolysis and methods of using same
First Claim
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1. A device for the removal of urea from a fluid having urea to produce a cleansed fluid, the device comprising:
- a urea decomposition unit comprising an inlet for entry of the fluid having urea and an outlet for removal of the cleansed fluid, and one or more sets of electrodes each having an anode and a cathode, wherein the anode of the one or more sets of electrodes is provided with an electrocatalytic surface for decomposition of urea via electrooxidation; and
an electrodialysis unit comprisinga bipolar membrane;
at least two ion exchange membranes; and
a set of electrodes having an anode and a cathode for separation of the fluid having urea via electrodialysis, where the fluid having urea is separated into an acid stream and a basic stream,wherein the basic stream of the electrodialysis unit is placed in fluid communication with the inlet of the urea decomposition unit, wherein the basic stream of the electrodialysis unit is oxidized by the one or more set of electrodes, and wherein the acid stream separated from the fluid having urea is placed in fluid communication with the basic stream oxidized by the one or more set of electrodes of the urea decomposition unit to produce a neutralized, cleansed fluid.
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Abstract
The present disclosure provides devices and methods of using same for cleansing a solution (e.g., a salt solution) of urea via electrooxidation, and more specifically to cleansing a renal therapy solution/dialysis solution of urea via electrooxidation so that the renal therapy solution/dialysis solution can be used or reused for treatment of a patient. In an embodiment, a device for the removal of urea from a fluid having urea to produce a cleansed fluid includes a urea decomposition unit and an electrodialysis unit.
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Citations
43 Claims
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1. A device for the removal of urea from a fluid having urea to produce a cleansed fluid, the device comprising:
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a urea decomposition unit comprising an inlet for entry of the fluid having urea and an outlet for removal of the cleansed fluid, and one or more sets of electrodes each having an anode and a cathode, wherein the anode of the one or more sets of electrodes is provided with an electrocatalytic surface for decomposition of urea via electrooxidation; and an electrodialysis unit comprising a bipolar membrane; at least two ion exchange membranes; and a set of electrodes having an anode and a cathode for separation of the fluid having urea via electrodialysis, where the fluid having urea is separated into an acid stream and a basic stream, wherein the basic stream of the electrodialysis unit is placed in fluid communication with the inlet of the urea decomposition unit, wherein the basic stream of the electrodialysis unit is oxidized by the one or more set of electrodes, and wherein the acid stream separated from the fluid having urea is placed in fluid communication with the basic stream oxidized by the one or more set of electrodes of the urea decomposition unit to produce a neutralized, cleansed fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A renal replacement therapy system comprising:
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a dialysis fluid circuit, wherein the dialysis fluid circuit comprises a device for the removal of urea from a dialysis fluid having urea to produce a cleansed dialysis fluid, the device comprising; a urea decomposition unit comprising an inlet for entry of the dialysis fluid having urea and an outlet for removal of the cleansed dialysis fluid, and a set of electrodes having an anode and a cathode, wherein the anode of the set of electrodes is provided with an electrocatalytic surface for decomposition of urea via electrooxidation; and an electrodialysis unit comprising a bipolar membrane; at least two ion exchange membranes; and a set of electrodes having an anode and a cathode for separation of the dialysis fluid having urea via electrodialysis, where the dialysis fluid having urea is separated into an acid stream and a basic stream, wherein the basic stream of the electrodialysis unit is placed in fluid communication with the inlet of the urea decomposition unit, wherein the basic stream of the electrodialysis unit is oxidized by the one or more set of electrodes, and wherein the acid stream separated from the dialysis fluid having urea is placed in fluid communication with the basic stream oxidized by the set of electrodes of the urea decomposition unit to produce a neutralized, cleansed fluid. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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Specification