Electrodialysis method

Details Electrodialysis method Electrodialysis method

B - Operations, Transporting

01

D

99/149, 99/83, 2

B01D 13/02 (1980.01)

Patent

CA 1078329

ELECTRODIALYSIS METHOD ABSTRACT OF THE DISCLOSURE An electrodialysis method for deacidifying a feed- stream comprises a first cell defined by anion-selective mem- branes and bounded by a pair of cells defined by the anion- selective membranes and a pair of cation-selective membranes. The solution to be treated is fed to the first membrane cell, a basic solution and a concentrating solution are delivered, respectively, to one of the adjacent cells, and an electric field is applied across the assembly. Hydroxyl anions from the basic solution pass into the first cell for neutralizing the acid hydrogen cation while the acid anion passes into one of the adjacent cells through which also flows the basic solution cation to maintain electrical balance.

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