Ultrafiltration and electrodialysis apparatus

Details Ultrafiltration and electrodialysis apparatus Ultrafiltration and electrodialysis apparatus

1976-03-25

1977-08-23

Prescott, Arthur C.

Chemistry: electrical and wave energy

Apparatus

Coating, forming or etching by sputtering

204180P, B01D 1302

Patent

active

040438961

ABSTRACT:
A combination electrodialysis method and apparatus comprising ultrafiltration membrane cell pairs interposed between a cation-selective membrane and an ion-nonselective membrane. The solution to be treated is fed to one side of the ultrafiltration membrane cell, a concentrating solution is delivered between the cation-selective and ion-nonselective membranes, and an electric field is applied across the assembly. Cations pass through the ion-selective membrane, ions of both polarities and weakly ionized substances pass through the ultrafiltration membrane which rejects the larger sized particles and molecules and anions pass through the ion-nonselective membrane to maintain electrical balance.

REFERENCES:
patent: 1022523 (1912-04-01), Whitney
patent: 2758965 (1956-08-01), Block et al.
patent: 3595766 (1971-07-01), Scheder
patent: 3595767 (1971-07-01), Scheder
patent: 3905886 (1975-09-01), Wang

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