Method for the deionization of substances that are not stable at

Details Method for the deionization of substances that are not stable at Method for the deionization of substances that are not stable at

1998-06-10

2000-05-23

Simmons, David A.

Liquid purification or separation

Processes

Ion exchange or selective sorption

210685, C02F 142

Patent

active

06066259&

ABSTRACT:
A process based on ion exchange with separated beds is disclosed for the deionization of substances that are not stable in the presence of strongly acidic cation exchangers, wherein the solution to be deionized is contacted with a first bed consisting of a basic anion exchanger in the form of hydrogen carbonate and subsequently with a second bed, connected in series, consisting of a weakly acidic cation exchanger in hydrogen form.

REFERENCES:
patent: 3388059 (1968-06-01), Wirth
patent: 3618589 (1971-11-01), Tavani
patent: 4131645 (1978-12-01), Keblys
patent: 4448693 (1984-05-01), Kiehling
patent: 4481112 (1984-11-01), Hitzel
patent: 5446125 (1995-08-01), Honda
patent: 5447635 (1995-09-01), Viscardi
patent: 5518627 (1996-05-01), Tomoi
patent: 5811581 (1998-09-01), Piva
"Ion Exchange Now Purifies Even Saltier Water," Chemical Engineering, p. 76,78, Jun. 1965.

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