Solid–liquid equilibria in the NaCl–SrCl2–H2O system at 288.15 K
- Authors: Li D.1, Meng Q.2, Meng L.1, Fan X.1
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Affiliations:
- School of Chemistry and Chemical Engineering
- Key Laboratory of Salt Lake Resources and Chemistry, Qinghai Institute of Salt Lakes
- Issue: Vol 90, No 2 (2016)
- Pages: 368-373
- Section: Physical Chemistry of Solutions
- URL: https://journals.rcsi.science/0036-0244/article/view/167754
- DOI: https://doi.org/10.1134/S0036024416020114
- ID: 167754
Cite item
Abstract
The phase equilibria in the ternary system NaCl–SrCl2–H2O at 288.15 K were studied with the isothermal equilibrium solution method. The phase diagram and refractive index diagram were plotted for this system at 288.15 K. The phase diagram contains one invariant solubility point, two univariant solubility curves, and two crystallization fields of NaCl and SrCl2 · 6H2O. The refractive indices of the equilibrium solution change regularly with w(NaCl) increase. The calculated refractive index data are in good agreement with the experimental data. Combining the experimental solubility data of the ternary system, the Pitzer binary parameters for NaCl at 288.15 K and SrCl2 at 298.15 K, the Pitzer mixing parameters θNa, Sr, ΨNa, Sr, Cl and the solubility equilibrium constants Ksp of solid phases existing in the ternary system at 288.15 K were fitted using the Pitzer and Harvie-Weare (HW) models. The mean activity coefficients of sodium chloride and strontium chloride, and the solubilities for the ternary system at 288.15 K were presented. A comparison between the calculated and measured solubilities shows that the predicted data agree well with the experimental results.
About the authors
Dan Li
School of Chemistry and Chemical Engineering
Email: menglingzong@lyu.edu.cn
China, Linyi, 276000
Qing-fen Meng
Key Laboratory of Salt Lake Resources and Chemistry, Qinghai Institute of Salt Lakes
Email: menglingzong@lyu.edu.cn
China, Xining, 810008
Ling-zong Meng
School of Chemistry and Chemical Engineering
Author for correspondence.
Email: menglingzong@lyu.edu.cn
China, Linyi, 276000
Xiu-xiu Fan
School of Chemistry and Chemical Engineering
Email: menglingzong@lyu.edu.cn
China, Linyi, 276000