Electrodeionization method and apparatus

Details Electrodeionization method and apparatus Electrodeionization method and apparatus

1988-11-23

1990-06-05

Niebling, John F.

Chemistry: electrical and wave energy

Apparatus

Coating, forming or etching by sputtering

2041824, 2041825, B01D 6146, B01D 6148, B01D 6150, B01D 6158

Patent

active

049311603

ABSTRACT:
An electrodeionization apparatus is provided for removing ions from liquids. Liquid to be purified is passed through at least two ion depletion compartments containing mixed anion and cation exchange resin beads in a given separation stage. A second liquid is passed through concentration compartments free of ion exchange resin beads. Ions under the influence of D.C. potential pass from the depletion compartments into the concentration compartments through ion permeable membranes. The beads in the depletion compartments are housed within subcompartments of controlled width and thickness and are retained therein by the ion permeable membranes which are secured to the walls of the subcompartments.

REFERENCES:
patent: 2799644 (1957-05-01), Kollsman
patent: 2923679 (1960-02-01), Kressman
patent: 3014855 (1961-12-01), Kressman
patent: 3149061 (1964-09-01), Parsi
patent: 3291713 (1966-12-01), Parsi
patent: 4439967 (1984-03-01), Sanchez et al.
patent: 4632745 (1986-12-01), Giuffrida et al.

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