Title:
充填セル電気透析(電気脱イオン)を含む電気透析の改良
Document Type and Number:
Japanese Patent JP3781773
Kind Code:
B2
Abstract:
Improved electrodialysis (ED) stacks are disclosed having one or more components selected from the group: a) cation exchange membranes having ion exchange groups predominantly sulfonic acid groups and a minor amount of weakly acidic and/or weakly basic groups or membranes which are selective to monovalent cations and simultaneously therewith, cation exchange granules selective to monovalent cations as packing in the dilute compartments; b) anion exchange membranes having as ion exchange groups only quaternary ammonium and/or quaternary phosphonium groups and substantially no primary, secondary and/or tertiary amine and/or phosphine groups or membranes which are selective to monovalent anions simultaneously therewith, anion exchange granules selective to monovalent anions as packing in the dilute compartments; c) as packing in the dilute compartment, anion exchange granules which are selective to monovalent anions, or cation exchange granules which are selective to monovalent cations, or cation exchange granules having as exchange groups a predominant amount of sulfonic acid groups and a minor amount of weakly acidic and/or weakly basic groups, or anion exchange granules consisting of organic polymers having as anion exchange groups only quaternary ammonium and/or quaternary phosphonium groups and almost no primary, secondary and/or tertiary amine and/or phosphine groups.
Inventors:
Bachelor, Bruce Tea.
Elia Know, Irving Dee.
Goldstein, Arthur El.
McDonald's, Russell Jay.
McRae, Wayne A.
The Sims, Keith Jay.
Zhang, Lee
Elia Know, Irving Dee.
Goldstein, Arthur El.
McDonald's, Russell Jay.
McRae, Wayne A.
The Sims, Keith Jay.
Zhang, Lee
Application Number:
JP52765895A
Publication Date:
May 31, 2006
Filing Date:
April 04, 1995
Export Citation:
Assignee:
Ionics Incorporated
International Classes:
B01D61/46; A23C9/144; B01D61/44; B01D61/48; B01D61/58; B01J47/08; C01B11/04; C01B11/06; C02F1/44; C02F1/469; C02F1/42; C02F1/467; C02F9/00
Domestic Patent References:
| JP6506867A | ||||
| JP61263606A | ||||
| JP58202002A | ||||
| JP55124590A | ||||
| JP61107906A |
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Sadafumi Kobori
Taro Akazawa
Hajime Asamura
Sadafumi Kobori
Taro Akazawa