Solid-liquid phase equilibria in the ternary systems H2O+ZnCl2+NaCl at temperatures of 298, 313 and 333 K

Sevilay Demirci, Vedat Adiguzel*, Omer Sahin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


In this study, an economic separation method is suggested with the use of phase equilibria in order to ensure the recycling of ZnCl2, the industrial waste amount of which is very high, and to prevent it from an environmental pollutant. Sodium chloride-zinc chloride-water systems were examined by the isothermal method at temperatures of 298, 313 and 333 K. The analyses of the liquid and solid phases were used to determine the composition of the solid phase using the Schreinemaker's graphic method. The solid-liquid phase equilibrium and viscosity data belonging to all the ternary systems were identified and the solubility and viscosity changes with temperature were compared. The viscosity values were inversely proportional to the temperature as the amount of ZnCl2 in the solution increased. NaCl, 2NaCl ZnCl2 nH2O (n: 2, 0), ZnCl2 salts were observed at 298, 313 and 333 K in the solid phases that are in equilibrium with the liquid phase at the invariant point.

Original languageEnglish
Pages (from-to)263-273
Number of pages11
JournalJournal of the Serbian Chemical Society
Issue number2
Publication statusPublished - 2022
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2022 Serbian Chemical Society. All rights reserved.


This work was supported by The Scientific and Technological Research Council of Turkey (TUBITAK) under Project No. 114Z651.

FundersFunder number
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu


    • crystallization region
    • invariant point
    • Schreinmakers method
    • solubility
    • viscosity


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