Devices for urea electrolysis with combination electrodialysis and urea oxidation cell 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 combination electrodialysis and urea oxidation cell including;
a first set of electrodes for separation of the fluid into an acid stream and a basic stream, wherein the first set of electrodes includes an anode and a cathode;
a first bipolar membrane;
at least one ion exchange membrane; and
one or more second set of electrodes positioned to contact the basic stream, the one or more second set of electrodes each having an anode and a cathode, wherein the anode of the one or more second set of electrodes is provided with an electrocatalytic surface for decomposition of urea via electrooxidation, wherein the acid stream separated from the fluid is placed in fluid communication with the basic stream oxidized by the one or more second set of electrodes to produce a neutralized, cleansed fluid; and
at least one power source to provide the first and second set of electrodes with an electrical charge to activate the electrocatalytic surface.
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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 combination electrodialysis and urea oxidation cell.
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29 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 combination electrodialysis and urea oxidation cell including; a first set of electrodes for separation of the fluid into an acid stream and a basic stream, wherein the first set of electrodes includes an anode and a cathode; a first bipolar membrane; at least one ion exchange membrane; and one or more second set of electrodes positioned to contact the basic stream, the one or more second set of electrodes each having an anode and a cathode, wherein the anode of the one or more second set of electrodes is provided with an electrocatalytic surface for decomposition of urea via electrooxidation, wherein the acid stream separated from the fluid is placed in fluid communication with the basic stream oxidized by the one or more second set of electrodes to produce a neutralized, cleansed fluid; and at least one power source to provide the first and second set of electrodes with an electrical charge to activate the electrocatalytic surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A renal replacement therapy system comprising:
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a dialysis fluid circuit, wherein the dialysis fluid circuit includes a combination electrodialysis and urea oxidation cell, the combination cell comprising; a first set of electrodes for separation of dialysis fluid containing urea into an acid stream and a basic stream, wherein the first set of electrodes includes an anode and a cathode; a first bipolar membrane; at least one ion exchange membrane; and one or more second set of electrodes positioned to contact the basic stream, the one or more second set of electrodes each having an anode and a cathode, wherein the anode of the one or more second set of electrodes is provided with an electrocatalytic surface for decomposition of urea via electrooxidation, wherein the acid stream separated from the fluid is placed in fluid communication with the basic stream oxidized by the one or more second set of electrodes to produce a neutralized, cleansed fluid; and at least one power source to provide the first and second set of electrodes with an electrical charge to activate the electrocatalytic surface. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification