Process for regenerating sugar decolorizing ion exchange...

Details Process for regenerating sugar decolorizing ion exchange... Process for regenerating sugar decolorizing ion exchange...

B - Operations, Transporting

01

J

260/234.2

B01J 49/00 (2006.01)

Patent

CA 2007487

ABSTRACT OF THE DISCLOSURE A process for regenerating sugar decolorizing ion exchange resin charged with sugar colorants to produce regenerated ion exchange resin and liquid effluent containing the sugar colorants. The process treats part of the effluent for removing a part of the sugar colorants contained there. The process comprises passing a low sodium chloride concentration aqueous solution through the resin to obtain a first effluent containing the sugar colorants with low affinity for the resin. Passing a higher sodium chloride concentration aqueous solution through the resins resulting from the previous step to obtain a second effluent containing the sugar colorants with higher affinity for the resin. Finally, removing a part of the sugar colorants with higher affinity for the resin from the second effluent to obtain a third effluent made partly free of the sugar colorants.

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