Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1989-12-29
1991-01-15
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204301, B01D 6144
Patent
active
049851276
ABSTRACT:
Multivalent metal cations in aqueous solution are electrotransported efficiently and with high capacity through cation permeable membranes into an aqueous solution containing a sulfonate ion which makes possible a simple electrodialytic process for conversion of all salts of multivalent metal cations into the respective acids or halogens of the anions of the salts and into water soluble salts or water insoluble salts or ionically immobile compounds of the multivalent metal cations. The use of a sulfonate ion the acid of which in a one normal solution would have a pH no greater than three (3) prevents fouling of the membrane and makes electrodialytic conversion of especially salts of barium, strontium, calcium and lead simple, efficient and with high capacity without the formation of undesirable products of electrolysis at the cell anode or cathode.
REFERENCES:
patent: 2921005 (1960-01-01), Bodamer
patent: 3310481 (1967-03-01), Mock et al.
patent: 3382164 (1968-05-01), Webb et al.
patent: 3788960 (1973-02-01), Patil et al.
patent: 4617097 (1986-11-01), Nobel et al.
Niebling John F.
Phasge Arun S,.
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