Ion exchange process for desalination

Details Ion exchange process for desalination Ion exchange process for desalination

C - Chemistry, Metallurgy

02

F

362/33

C02F 1/42 (2006.01) B01J 39/00 (2006.01) B01J 49/02 (2006.01)

Patent

CA 1102457

- i - PATENT APPLICATION OF H . Shimizu for ION EXCHANGE PROCESS FOR DESALINATION Docket No. 78-30 - PCB/vmw Abstract of the Disclosure An ion exchange process for desalination wherein a thermally regenerable ion exchange resin having weakly acidic free acid groups and weakly basic free base groups is carbonated, for example by contact with an H2CO3 solution, whereby the free base groups are converted to a carbonate form. The conversion may be effected either prior to or simultaneously with contact between the resin and the solution to be desalinated. Both fixed bed and continuous or semi-continuous resin systems are usable. The process maintains the desalination capacity at a high level while providing affective desalination.

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