Electrodialysis of acid whey
AssigneeBorden, Inc.
InventorsAlexander W. Williams, Harry A. Kline
Life of this patent
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Abstract
Reduction of ash and titratable acidity in liquid whey is accomplished by electrodialysis, without substantial precipitate formation, by passing at least a portion of the whey through a demineralization unit composed of a number of whey streams each bounded on both sides by brine streams, the streams being separated by cation and anion membranes arranged in an alternate sequence; and passing at least a portion of the whey through a deacidification unit composed of a plurality of whey streams bounded by a brine stream on one side and by a caustic solution stream on the other, the streams being separated by the sequence of cation-anion-anion-cation-etc., membranes wherein the whey stream is disposed between a pair of anion membranes.
Claims14
Process for reducing ash content and titratable acidity in liquid whey, without forming a substantial precipitate, comprising treating at least a portion of the whey in a demineralization cell and treating at least a portion of the whey in a deacidification cell under the influence of electrical current, the treatment in the demineralization cell comprises passing the whey through a first chamber while passing brine solution through second and third chambers disposed on both sides of the first chamber, the chambers are in adjoining disposition and are defined by anion and cation membranes arranged in an alternating sequence;
- the treatment in the deacidification cell comprises passing a brine solution through a first chamber, passing the whey through a second chamber, and passing caustic solution through a third chamber, the chambers of the cell are in adjoining disposition and are defined by spaced membranes disposed in the sequence of cation-anion-anion-cation wherein the whey chamber is defined by the pair of anion membranes.
Dependencies are inferred from the claim text.