Electrodialysis method

Details Electrodialysis method Electrodialysis method

1976-11-15

1978-08-29

Prescott, Arthur C.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204301, 426 34, 426 40, 426 41, B01D 1302, A23C 2100, A23C 914

Patent

active

041101758

ABSTRACT:
An electrodialysis method for deacidifying a feedstream comprises a first cell defined by anion-selective membranes 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.

REFERENCES:
patent: 3086928 (1963-04-01), Schulz
patent: 3165415 (1965-01-01), Kilburn et al.
patent: 3330749 (1967-07-01), Kuwata et al.
patent: 3369906 (1968-02-01), Chen
patent: 3433726 (1969-03-01), Parsi et al.
patent: 3475216 (1969-10-01), Walon
patent: 3484356 (1969-12-01), Goujard
patent: 3870613 (1975-03-01), Nakamura et al.

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