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Balarew, Chr.; Tepavitcharova, Stefka; Rabadjieva, D.; Voigt, Wolfgang

doi:10.1023/a:1012288316884

Cited by 43 publications

(11 citation statements)

References 8 publications

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“…The solubility of magnesium chloride is shown in Table . It is found that the absolute deviation of the solubility data of MgCl 2 in this experiment is 0.44% compared with that reported in the Handbook of Chemistry and Physics, and the absolute deviation between the result of Balarew et al and that of the Handbook is −0.24%. The solubility data of MgCl 2 in this experiment were determined by repeated measurements, which can ensure their accuracy.…”

Section: Resultscontrasting

confidence: 50%

Studies on Phase Equilibria of Ternary Systems KCl–PbCl₂–H₂O and MgCl₂−PbCl₂–H₂O at 323 K

Song

Gao

et al. 2020

J. Chem. Eng. Data

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The solubility relationships of the ternary systems KCl–PbCl2–H2O and MgCl2−PbCl2–H2O at 323 K were studied by the isothermal dissolution equilibrium method in this article. In the KCl–PbCl2–H2O system, the phase diagram contains three invariant points, four solubility curves, and four crystallization regions (corresponding to KCl, KCl·2PbCl2, KCl·PbCl2, and PbCl2, respectively). Accordingly, two kinds of double salts, KCl·2PbCl2 and KCl·PbCl2, form in sequence with the increase of KCl concentration. In the MgCl2–PbCl2–H2O system, there are two invariant points, three solubility curves, and three crystallization regions (corresponding to MgCl2·6H2O, 3MgCl2·2PbCl2·18H2O, and PbCl2, respectively) in the phase diagram. In the two phase diagrams listed above, lead chloride has the largest crystallization region and it is most easily to deposit from the solution.

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Section: Resultscontrasting

confidence: 50%

Studies on Phase Equilibria of Ternary Systems KCl–PbCl₂–H₂O and MgCl₂−PbCl₂–H₂O at 323 K

Song

Gao

et al. 2020

J. Chem. Eng. Data

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“…Without stirring, epsomite is observed instead of astrakanite. The calculation also gives the same sequence, but experience shows that no or metastable equilibria are observed with Black Sea water, and epsomite precipitates as second solid phase instead of astrakanite [7].…”

Section: Comparison Between Calculation and Experiencementioning

confidence: 77%

Crystallization Sequence of Brines–Geometrical Principles for a Computer Assisted Calculation

Cohen‐Adad

Cohen-Adad

Balarew

et al. 2000

Monatshefte fuer Chemie

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A computer assisted calculation of the crystallization sequence of a brine is performed on the basis of the respective phase diagrams at 25 C. The nature of the solids and the mass balance are determined. The calculation gives immediate quantitative information of the brine behavior during evaporation. The calculation is performed assuming that i) the solids are always in equilibrium with the liquid, i.e. that some solid phases can be partially or completely redissolved during evaporation, or ii) the solids are separated from liquid by sedimentation and no redissolution is possible. The seasonal or day-night¯uctuations of temperature and metastable equilibria have not been taken into account.

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“…Value of the Debye-Hückel coefficient A φ is 0.408 kg 1/2 .mol -1/2 at 50 o C. 25 For θM,Ca and ψCa,M,Cl measurements of the activities of the complex salts in the system containing high concentrations of MCl (M = Na or K) and CaCl 2 are not available, hence the evaluation of the mixing parameters θM,Ca and ψCa,M,Cl relied on solubility data and solubility product of hydrated solid at 50 o C was obtained by a least-squares optimization procedure on the solubility data of corresponding ternary system. All of the parameters used in our calculations are listed in Tables 4 and 5.…”

Section: Calculation Of the Standard Solubility Product K MXmentioning

confidence: 94%

Measurement of Solubilities in the Ternary System NaCl + CaCl₂+ H₂O and KCl + CaCl₂+ H₂O at 50℃

Yang¹,

Hou²,

Ding³

et al. 2010

Journal of the Korean Chemical Society

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요약. NaCl-CaCl2-H2O와 KCl-CaCl2-H2O계의 용해도와 물리화학적 성질(굴절률)을 50 o C에서 측정하였으며, 그 결과를 상 평형 그림과 조성에 따른 물리화학적 성질에 대한 도표로 나타내었다. 삼성분계의 상 평형 그림은 불변점이 하나, 일변수 곡선 이 둘, NaCl (또는 KCl) 및 CaCl2․2H2O에 대응되는 결정화 지역이 두 개가 있음을 보여주었다. 이들 계에 대하여 혼합 파라미 터인 θM,Ca와 ΨM,Ca,Cl (M = Na or K), 평형상수 Ksp를 최소제곱법을 이용하여 결정하였으며, 이때, NaCl, KCl 및 CaCl2의 단일-염 Pitzer 파라미터 β (0) , β (1) , β (2) and C ф 는 참고문헌을 통하여 직접 계산하였다. 이 결과들은 실험결과와 잘 일치하였다. 주제어: Pitzer 모델, 용해도 평형상수, 용해도 예측ABSTRACT. The solubility and the physicochemical property (refractive index) in the NaCl-CaCl2-H2O and KCl-CaCl2-H2O systems were determined at 50 o C and the phase diagrams and the diagrams of physicochemical property vs composition were plotted. One invariant point, two univariant curves, and two crystallization zones, corresponding to sodium Chloride (or potassium chloride), dihydrate (CaCl2·2H2O) showed up in the phase diagrams of the ternary systems. The mixing parameters θM,Ca and ΨM,Ca,Cl (M = Na or K) and equilibrium constant Ksp were evaluated in NaCl-CaCl2-H2O and KCl-CaCl2-H2O systems by least-squares optimization procedure, in which the single-salt Pitzer parameters of NaCl, KCl and CaCl2 β (0) , β (1) , β (2) and C ф were directly calculated from the literature. The results obtained were in good agreement with the experimental data.

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Cited by 43 publications

References 8 publications

Studies on Phase Equilibria of Ternary Systems KCl–PbCl₂–H₂O and MgCl₂−PbCl₂–H₂O at 323 K

Studies on Phase Equilibria of Ternary Systems KCl–PbCl₂–H₂O and MgCl₂−PbCl₂–H₂O at 323 K

Crystallization Sequence of Brines–Geometrical Principles for a Computer Assisted Calculation

Measurement of Solubilities in the Ternary System NaCl + CaCl₂+ H₂O and KCl + CaCl₂+ H₂O at 50℃

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Untitled

Cited by 43 publications

References 8 publications

Studies on Phase Equilibria of Ternary Systems KCl–PbCl2–H2O and MgCl2−PbCl2–H2O at 323 K

Studies on Phase Equilibria of Ternary Systems KCl–PbCl2–H2O and MgCl2−PbCl2–H2O at 323 K

Crystallization Sequence of Brines–Geometrical Principles for a Computer Assisted Calculation

Measurement of Solubilities in the Ternary System NaCl + CaCl2+ H2O and KCl + CaCl2+ H2O at 50℃

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Product

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About

Studies on Phase Equilibria of Ternary Systems KCl–PbCl₂–H₂O and MgCl₂−PbCl₂–H₂O at 323 K

Studies on Phase Equilibria of Ternary Systems KCl–PbCl₂–H₂O and MgCl₂−PbCl₂–H₂O at 323 K

Measurement of Solubilities in the Ternary System NaCl + CaCl₂+ H₂O and KCl + CaCl₂+ H₂O at 50℃