Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1991-03-29
1993-11-02
Niebling, John
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
204152, 2041824, 204301, C25C 100
Patent
active
052581098
ABSTRACT:
Complexes and salts of metal cations and acid anions are electrodialytically converted into insoluble hydroxides of the metal cations and acids of the anions. The conversion is effected without the electrotransport of metal cations by insolubilizing the metal cations with hydroxyl ions formed in a catholyte separated by a cation permeable membrane from an anolyte and converting anions of alkali salts formed in the catholyte to acids in the anolyte. The process comprises (a) feeding a solution of a metal complex or salt to a catholyte containing alkali cations; (b) forming hydroxyl ions in the catholyte to form insoluble metal hydroxides and alkali salts of acid anions; (c) separating the insoluble hydroxide from the catholyte; (d) feeding the separated catholyte to the anolyte whereby alkali cations are electrotransported from the anolyte to the catholyte.
REFERENCES:
patent: 3926759 (1975-12-01), Horn et al.
patent: 4149946 (1979-04-01), Burke
patent: 4566956 (1986-01-01), Cipriano
Niebling John
Phasge Arun S,.
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