Chemistry: electrical and wave energy – Processes and products
Patent
1991-06-12
1993-10-05
Niebling, John
Chemistry: electrical and wave energy
Processes and products
204103, 2041824, 2041825, 204301, B01D 6144
Patent
active
052501590
ABSTRACT:
A method and bipolar membrane stack for the generation of acid and alkali metal base solutions from an impure salt by electrodialysis. The unit cells of the stack comprise a novel arrangement of cation-selective membranes and an anion selective membrane with relation to a bipolar membrane forming four liquid flow channels. One of the cation-selective membranes is monocation-selective, passing monovalent cations while blocking the passage of multivalent cations. The method is operable continuously using untreated raw material brines contaminated with multivalent cation salts to generate substantially pure alkali metal base solutions.
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Noyes Data Corporation, Membrand and Ultrafiltration Technology, Chemical Technology Review No. 147, pp. 201-202. no date provided.
Niebling John
Phasge Arun S,.
The Graver Company
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