Thermodynamic modeling of high salinary phosphate solutions II. Ternary and higher systems

•Thermodynamic modeling of phosphate solutions of high ionic strengths.•Comprehensive revision and addition of thermodynamic data by the isopiestic method.•Interaction Pitzer parameters of phosphate ions in the Na–K–Cl–SO4–H2O system.•Reliable thermodynamic properties of phosphates solid phases.•Phy...

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Bibliographic Details
Published inThe Journal of chemical thermodynamics Vol. 80; pp. 172 - 183
Main Authors Scharge, T., Muñoz, A.G., Moog, H.C.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.01.2015
Subjects
Binary systems (materials)
Isopiestic
Literature reviews
Mathematical models
Modelling
Nuclear waste disposal
Phosphate solutions
Phosphates
Pitzer parameters
Solubility
Thermodynamic data base
Thermodynamics
Water activity
Water activity
Solubility
Thermodynamic data base
Phosphate solutions
Pitzer parameters
Nuclear waste disposal
Isopiestic
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Summary:•Thermodynamic modeling of phosphate solutions of high ionic strengths.•Comprehensive revision and addition of thermodynamic data by the isopiestic method.•Interaction Pitzer parameters of phosphate ions in the Na–K–Cl–SO4–H2O system.•Reliable thermodynamic properties of phosphates solid phases.•Physicochemical interpretation of Pitzer parameters. A comprehensive set of ternary interaction Pitzer parameters for solutions of the system Na–K–Cl–SO4–PO4–HPO4–H2PO4 was calculated from water activity and solubility data acquired from an extensive literature review and water activity data obtained from isopiestic experiments. This work is a continuation of part I, wherein results concerning binary phosphate systems are presented.
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ISSN:0021-9614
1096-3626
DOI:10.1016/j.jct.2013.12.017