Salting-out precipitation of NaCl, KCl and NH4Cl in mixtures of water and methanol described by the modified Pitzer model

被引：16

作者：

Galvao, Alessandro C. ^{[1
]}

Jimenez, Yecid P. ^{[2
]}

Justel, Francisca J. ^{[2
]}

Robazza, Weber S. ^{[1
]}

Donatti, Fernanda S. ^{[1
]}

机构：

[1] Santa Catarina State Univ UDESC, Dept Food & Chem Engn, Lab ApTher Appl Thermophys, Pinhalzinho, Brazil

[2] Univ Antofagasta, Fac Ingn, Dept Ingn Quim & Proc Minerales, Antofagasta, Chile

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2020年 / 150卷

关键词：

Phase equilibrium; Solubility; Electrolytes; Modified Pitzer model; Crystallization; SOLID-LIQUID EQUILIBRIA; WASTE-WATER; ANTISOLVENT CRYSTALLIZATION; POTASSIUM-CHLORIDE; AMMONIUM-CHLORIDE; PHASE-EQUILIBRIA; AQUEOUS-SOLUTION; VAPOR-PRESSURES; MIXED-SOLVENTS; PLUS WATER;

D O I：

10.1016/j.jct.2020.106202

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Experimental data and modelling of electrolyte solutions are important in different fields. Separation and purification of such materials depend on knowledge of solid-liquid equilibrium as well as the mathematical models allow the development of solution theories and process simulators. Therefore, the current work presents the study of NaCl, KCl and NH4Cl solubility in binary liquid solutions formed by water and methanol at temperatures ranging from 288.15 K to 328.15 K. Solubility decreases with increasing methanol concentration and increases with increasing temperature, with the exception of the NaCl, where the temperature has a minimum effect on its solubility. The modified Pitzer model was applied to describe the solid-liquid equilibrium and its successful implementation also described the salting-out precipitation by the addition of an anti-solvent. (C) 2020 Elsevier Ltd.

引用

页数：9