Process for manufacturing an aqueous sodium hydroxide solution

Details Process for manufacturing an aqueous sodium hydroxide solution Process for manufacturing an aqueous sodium hydroxide solution

1997-10-29

1999-03-30

Phasge, Arun S.

Chemistry: electrical and wave energy

Processes and products

Electrophoresis or electro-osmosis processes and electrolyte...

204538, 205510, 205512, 205514, B01D 6144

Patent

active

058883681

ABSTRACT:
Process for manufacturing sodium hydroxide by the electrodialysis of sodium carbonate in an electrodialysis cell having three compartments, in which an aqueous sodium carbonate solution is introduced into a compartment of the cell which is bounded between two cationic membranes, an acid is introduced into a compartment which is bounded between one of the cationic membranes and a cationic face of a bipolar membrane, and an aqueous sodium hydroxide solution is removed from a compartment which is adjacent to an anionic face of the bipolar membrane.

REFERENCES:
patent: 4238305 (1980-12-01), Gancy et al.
patent: 4592817 (1986-06-01), Chlanda et al.
patent: 4636289 (1987-01-01), Mani et al.
patent: 5308455 (1994-05-01), Bourgeois
patent: 5395497 (1995-03-01), Bourgeois

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