Volume 42, Issue 4 pp. 867-873
Research Article

Electrodialysis Application of the Ultrafiltration Permeate of Milk Before and After Reverse Osmosis

Nikolay Shakhno

Corresponding Author

Nikolay Shakhno

University of Chemical Technology in Prague, Department of Dairy, Fat and Cosmetics, Technicka 3, Dejvice, 166 28 Prague, Czech Republic

Correspondence: Nikolay Shakhno ([email protected]), University of Chemical Technology in Prague, Department of Dairy, Fat and Cosmetics, Technicka 3, Dejvice, 166 28 Prague, Czech Republic.Search for more papers by this author
Alina Botvynko

Alina Botvynko

University of Chemical Technology in Prague, Department of Dairy, Fat and Cosmetics, Technicka 3, Dejvice, 166 28 Prague, Czech Republic

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Jiří Ečer

Jiří Ečer

Membrain s.r.o., Pod Vinici 87, 471 27 Straz pod Ralskem, Czech Republic

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Ladislav Čurda

Ladislav Čurda

University of Chemical Technology in Prague, Department of Dairy, Fat and Cosmetics, Technicka 3, Dejvice, 166 28 Prague, Czech Republic

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First published: 06 February 2019
Citations: 4

Abstract

Ultrafiltered (UF) milk permeate was concentrated by reverse osmosis (RO). UF and UF + RO samples were then desalted by electrodialysis (ED) to three levels of desalination: 1, 2.5, and 4 % of ash in the dry matter. Ions were analyzed by a new high-performance liquid chromatography method, which enables simultaneous estimation of cations and anions. ED of UF permeate has some advantages over that of UF + RO samples, including a shorter ED time and a higher average salt flow rate, but RO treatment of UF permeate before ED enables the processing of larger volumes of UF permeate. Therefore, ED of milk permeate, particularly after RO, improves the handling characteristics and may offer advantages for further processing of secondary dairy products.

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