Abstract
The regeneration mechanism of ion-exchange resins in the electrodeionization process has been studied with theoretical and experimental investigation. Theoretically, contact forms of resins and membranes can be divided into 4 types, and the possible places of water-splitting are located at the contact faces of different types resins and membranes, for example, cation ion-exchange resins contact with anion ion-exchange resins or membranes, anion ion-exchange resins contact with cation ion-exchange resins and membranes, according to the theoretical calculation. And the exhausted ion-exchange resins can be regenerated by the electrodeionization process with the regeneration efficiency at 70–80% in this work.
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