Devices and methods for removing dissolved ions from water using composite resin electrodes
AssigneeThe Regents of the University of California
InventorsChinmayee V. Subban, Ashok J. Gadgil, Robert Kostecki, Guoying Chen
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Abstract
The present invention provides for a device useful or removing dissolved ions from water comprising or configured to comprise composite resin electrodes. The present invention provides for a device useful for removing dissolved ions from water comprising or configured to comprise composite resin electrodes. The present invention also provides for a method for removing dissolved ions from water comprising providing said device, and using it thereof.
Claims12
A system for removing dissolved ions from water, comprising:
- (a) a first electrode in contact with a first plurality of ion exchange resin (IER) particles, (b) a second electrode in contact with a second plurality of IER particles, (c) an voltage source, (d) a chamber defined by the first electrode and the second electrode, (e) an inlet, (f) a first outlet, and (g) optionally a second outlet, wherein the first electrode, the second electrode, and the electricity source are in electrical communication with each other, and the chamber is in fluid communication with the inlet, the first outlet, and optionally the second outlet, and optionally the voltage source is configured so that the direction of a current to the first electrode and the second electrode can be switched.
A system for removing dissolved ions from water, comprising:
- (a) an inlet, (b) a first electrode in contact with a first plurality of ion exchange resin (IER) particles, (c) an insulating separator, (d) a second electrode in contact with a second plurality of IER particles, (e) an outlet, and (f) an voltage source, wherein (i) the insulating separator separates the first electrode and the second electrode, (ii) the first electrode, the second electrode, and the electricity source are in electrical communication with each other, and (iii) there is fluid communication in the following order:
- the inlet, the first electrode, the insulating separator, the second electrode, and the outlet, and optionally the voltage source is configured so that the direction of a current to the first electrode and the second electrode can be switched.
A method for removing dissolved ions from ion-containing water comprising:
- (a) providing the system or apparatus for removing dissolved ions from ion-containing water of the present invention;
- (b) flowing ion-water containing water into the system via the inlet, such that cations in the ion-water containing water associate with the CER, anions in the ion-water containing water associate with the AER, and water flowing out of the outlet has fewer ions than the ion-containing water flowing into the inlet, (c) regenerating the CER and AER comprising (i) flowing water containing fewer ions into the system via the inlet, (ii) closing the outlet, and (iii) applying a voltage to the CER and AER, such that the cations disassociate from the CER and the anions disassociate from the AER, (d) opening the outlet to let the water containing the disassociated cation and anions in the system flow out, and (e) optionally repeating steps (b) to (e).
Dependencies are inferred from the claim text.