Ion removal from particulate material using electrodeionization process and devices therefor
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United States of America Patent
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Issued Date -
Mar 2, 2006
app pub date -
Aug 27, 2004
filing date -
Aug 27, 2004
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Abstract
Methods are disclosed for the electrodeionization and removal of at least some of at least one type of ion from an ion-containing particulate material comprising passing a direct current for a sufficient time between (a) an anode and (b) a cathode, wherein the anode and the cathode are both in electrical contact with an aqueous slurry of the particulate material, wherein the anode is in electrical contact with an anion exchange membrane and wherein the cathode is in electrical contact with a cation exchange membrane, thereby causing the removal of at least some of the at least one type of ion to be removed from the particulate material. Also disclosed are devices for the electrodeionization and removal of at least some of at least one type of ion from an ion-containing particulate material.
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