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Liquid-solid metastable phase equilibria for the quaternary system (NaCl-KCl-CaCl2-H2O) at 308.15 K
Li, D. C.1,2; Deng, T. L.1,2
2009-02-01
Source PublicationJOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
Volume95Issue:2Pages:361-367
SubtypeArticle
AbstractThe solubility and the physicochemical properties (densities, viscosities, refractive indices, conductivities and pH) in the liquid-solid metastable system (NaCl-KCl-CaCl2-H2O) at 308.15 K have been investigated using the isothermal evaporation method, and the dry-salt phase diagram, water-phase diagram, and the diagram of physicochemical properties vs. composition in the system were plotted. One three-salt cosaturated point, three metastable solubility isotherm curves, and three crystallization regions corresponding to sodium chloride, potassium chloride and calcium chloride tetrahydrate were formed, and neither solid solution nor double salts were found. On the basis of the extended Harvie-Weare (HW) model and its temperature-dependent equation, the values of the Pitzer parameters beta((0)), beta((1)), C-phi for NaCl, KCl and CaCl2, the mixing ion-interaction parameters theta(Na,K), theta(Na,Ca), theta(K,Ca), I-Na,I-K,I-Cl, I-Na,I-Ca,I-Cl, I-K,I-Ca,I-Cl, and the Debye-Huckel parameter A(phi) and the chemical potentials of the minerals in the quaternary system at 308.15 K were fitted, and the predictive solubility based on the temperature-dependent equation and the chemical potentials of the minerals agrees well with the experimental data.
KeywordMetastable Phase Equilibrium Pitzer Parameters Solubility
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordMINERAL SOLUBILITIES ; NATURAL-WATERS ; PREDICTION ; MODEL ; 25-DEGREES-C ; THERMODYNAMICS ; TEMPERATURES
Indexed BySCI ; ISTP
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Analytical ; Chemistry, Physical
WOS IDWOS:000264133800005
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Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/5900
Collection青海盐湖研究所知识仓储
Affiliation1.Chengdu Univ Sci & Technol, Coll Mat Chem & Chem Engn, Chengdu 610059, Peoples R China
2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources & Chem, Xining 810008, Peoples R China
Recommended Citation
GB/T 7714
Li, D. C.,Deng, T. L.. Liquid-solid metastable phase equilibria for the quaternary system (NaCl-KCl-CaCl2-H2O) at 308.15 K[J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,2009,95(2):361-367.
APA Li, D. C.,&Deng, T. L..(2009).Liquid-solid metastable phase equilibria for the quaternary system (NaCl-KCl-CaCl2-H2O) at 308.15 K.JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,95(2),361-367.
MLA Li, D. C.,et al."Liquid-solid metastable phase equilibria for the quaternary system (NaCl-KCl-CaCl2-H2O) at 308.15 K".JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY 95.2(2009):361-367.
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