Method for purifying by nanofiltration an aqueous sugary...

Details Method for purifying by nanofiltration an aqueous sugary... Method for purifying by nanofiltration an aqueous sugary...

2006-06-27

2006-06-27

Brunsman, David (Department: 1755)

Sugar, starch, and carbohydrates

Processes

Carbohydrate manufacture and refining

Reexamination Certificate

active

07067014

ABSTRACT:
A purification method employs nanofiltration of an aqueous solution containing one or several sugars, multivalent cations, monovalent metal cations, monovalent anions and multivalent inorganic anions and/or organic acid anions. The method includes replacement of at least a part of said multivalent cations and/or said multivalent inorganic anions and organic acid anions respectively by monovalent metal cations and/or monovalent anions to produce a solution. Nanofiltration of the solution is carried out to obtain a retentate, and at least part of the retentate is subject to crystallization.

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patent: WO 99/04903 (1999-02-01), None

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