Patent ID: 6852230
Filing Date: 2005-02-08
Classification: A61P,B01J

Abstract:
1. A method for desalting an aqueous liquid containing a charged substance comprising the steps of: (i) contacting liquid (I) with an ion-exchanger (1) under conditions permitting binding between the ion-exchanger and the substance, said ion exchanger comprising a base matrix carrying an ion-exchange ligand (Ligand 1) that has the opposite charge compared to the substance, (ii) desorbing said substance from said ion-exchanger by the use of a liquid (liquid (II)), wherein (A) ion-exchanger (1) is selected among ion-exchangers that: and (B) step (ii) comprises that the pH of liquid (II) is adjusted to a pH value that means that the charge difference between the substance and the ligand and/or the ion-exchanger is lowered.