Patent ID: 6797140
Filing Date: 2004-09-28
Classification: B01D,B01J,C02F

Abstract:
A method of transferring an ionizable organic from an ion conducting fluid containing the ionizable organic from one place to another while controlling the pH thereof comprising establishing a source of ion conducting fluid containing the ionizable organic,introducing the ion conducting fluid containing the ionizable organic into an electrodeionization (EDI) stack having an anode and a cathode resin wafer interleaved between a cation exchange membrane and an anion exchange membrane, providing a mechanism for supplying an electric potential between the EDI stack anode and cathode, whereby when the electric potential is applied to the EDI stack anode and cathode and the ion conducting fluid containing the ionizable organic passes through the resin wafers in the reaction chambers at least some of the ionizable organic present in the ion conducting fluid disassociates into a cation passing through the cation-exchange membrane and an anion passing through the anion-exchange membrane, transferring at least some of the ionizable organic from the ion conducting fluid inside the reaction chambers to outside the reaction chambers through a porous solid ion exchange resin wafer to control the pH of the ion conducting fluid remaining in the reaction chambers by interaction with the wafer.