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1. (WO2001030698) METHOD FOR FORMULATING FOOD GRADE SODIUM BICARBONATE

Pub. No.:    WO/2001/030698    International Application No.:    PCT/CA2000/001266
Publication Date: Fri May 04 01:59:59 CEST 2001 International Filing Date: Wed Oct 25 01:59:59 CEST 2000
IPC: C01D 7/22
C01D 7/24
Applicants: AIRBORNE INDUSTRIAL MINERALS INC.
PHINNEY, Robin
Inventors: PHINNEY, Robin
Title: METHOD FOR FORMULATING FOOD GRADE SODIUM BICARBONATE
Abstract:
A process for preparing food grade sodium bicarbonate from a sodium bicarbonate feedstock contaminated at least with ammonium sulfate using ion exchange (14) and solubility shifting (24) as the principal purification operations.