Process for reducing the wash water requirement of weakly basic

Details Process for reducing the wash water requirement of weakly basic Process for reducing the wash water requirement of weakly basic

1985-05-31

1987-11-10

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210677, 210683, B01J 4900, C02F 142

Patent

active

047056371

ABSTRACT:
The invention relate to a process for reducing the wash water required by weakly basic anion exchangers containing primary and/or secondary amino groups when fed with water containing carbon dioxide; in accordance with the process the exhausted, weakly basic anion exchangers are treated with dilute aqueous mineral acids before being regenerated.

REFERENCES:
patent: 2354172 (1944-07-01), Myers et al.
patent: 3887391 (1975-06-01), Schoenrock et al.
patent: 3982956 (1976-09-01), Schoenrock et al.
patent: 4247340 (1981-01-01), Cartier
European Search Report.
Chemical Abstracts, vol. 78, 1973, p. 233.
Japanese Abstract, vol. 6, No. 68, 4/30/82 (1 page), BolJ49/00.
Translation, Jap. Abs., vol. 6, No. 68, 4/30/82 pp. 1-6.
Rohm and Haas, Philadelphia, Amberlite IRA-93 (2 pgs.).

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