Ultrafiltration and electrodialysis method and apparatus

Details Ultrafiltration and electrodialysis method and apparatus Ultrafiltration and electrodialysis method and apparatus

1977-06-09

1978-10-31

Prescott, Arthur C.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204301, B01D 1302

Patent

active

041233425

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: 3214362 (1965-10-01), Juda
patent: 3309301 (1967-03-01), Kollsman
patent: 3577331 (1971-05-01), Lacey et al.
patent: 3687682 (1972-08-01), Scheder
patent: 3767548 (1973-10-01), Okada et al.
patent: 3870613 (1975-03-01), Nakamura et al.
patent: 3905886 (1975-09-01), Wang

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