Method for purification of crude sugar juices
AssigneeSud-Chemie AG
InventorsUlrich Sohling, Friedrich Ruf, Solon José Ramos Filho, Roberto Clóvis Manglalardo, José Antonio Ortiz Niembro, Rosalina Condemarin
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Abstract
A process for obtaining white sugar from e.g. sugar cane by treating the crude sugar juice with acid activated bentonite preferably selected from the group of smectites, whereby the acid activated bentonite mixture replaces the traditional environmental unfriendly sulfitation process. The acid-activated clay together with polyaluminium salts, and preferably phosphoric and/or sulfuric acid allows obtaining a high quality white sugar.
Claims15
A method for purification of crude sugar juices obtained by extraction of sugar containing plants, wherein:
- a crude sugar juice is provided;
- to the crude sugar juice is added an adsorbent, comprising a combination of:
- an acid-activated clay, and
- an aluminium salt
- to obtain a mixture;
- the pH of the mixture is adjusted within a range of 6.0 to 8.0;
- and
- a purified sugar juice is separated from the mixture.
An adsorbent, comprising a combination of an acid-activated clay and an aluminium salt deposited thereon.
Dependencies are inferred from the claim text.