Water Activity Measurements by the Isopiestic Method for the MCl-CaCl2-H2O (M = Na, K) Systems at 323.15 K

被引:9
作者
Han, Haijun [1 ,2 ]
Guo, Lijiang [2 ]
Li, Dongdong [2 ]
Dong, Ouyang [2 ]
Yao, Yan [2 ]
Zhang, Ning [1 ]
Zeng, Dewen [1 ]
机构
[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
[2] Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
关键词
PITZER MODEL REPRESENTATION; ION-INTERACTION MODEL; ACTIVITY-COEFFICIENTS; OSMOTIC COEFFICIENTS; THERMODYNAMIC PROPERTIES; VAPOR-PRESSURES; MIXTURES; MULTICOMPONENT; CHLORIDE;
D O I
10.1021/acs.jced.5b00155
中图分类号
O414.1 [热力学];
学科分类号
摘要
In this work, the water activities of the NaCl-CaCl2-H2O and KCl-CaCl2-H2O ternary systems and of their sub-binary systems NaCl-H2O and KCl-H2O were measured using an isopiestic method at 323.15 K The isopiestic composition line for the NaClCaCl2-H2O system was found to obey the Zdanovskii rule very well, whereas the KCl-CaCl2-H2O system deviated slightly. The addition of NaCl to an aqueous solution of CaCl2 decreased its water activity for all CaCl2 molalities. However, KCl was found to decrease and increase the water activity at low and high CaCl2 molality, respectively. The turning point appears at 8.0 mol.kg(-1) CaCl2 solution. The Pitzer-Simonson-Clegg (PSC) model was applied to represent the water activity of the two ternary systems, and the calculated results are discussed.
引用
收藏
页码:2285 / 2290
页数:6
相关论文
共 50 条
[41]   Solubility Measurement and Thermodynamic Modeling of Solid-Liquid Equilibria in the MCl-M2B4O7-H2O (M = Li, Na) Systems [J].
Yang, Lan ;
Meng, Lingzong ;
Ge, Tongjie ;
Li, Dan ;
Deng, Tianlong ;
Guo, Yafei .
JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2019, 64 (10) :4510-4517
[42]   Phase equilibria and calculation of quaternary system LiCl+MgCl2+CaCl2+H2O at 323.2 K [J].
Chen K. ;
Du L. ;
Zeng Y. ;
Ren S. ;
Yu X. .
Huagong Xuebao/CIESC Journal, 2023, 74 (05) :1896-1903
[43]   Phase Equilibria of Aqueous Ternary Systems Li2SO4 + Na2SO4 + H2O and Na2SO4 + K2SO4 + H2O at 303.2 K [J].
Yu, Xudong ;
Yao, Zhihao ;
Zhao, Zhixing ;
Du, Li ;
Feng, Xia ;
Ren, Siying ;
Luo, Jun ;
Zeng, Ying .
JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2023, 68 (02) :474-482
[44]   Mean activity coefficients of KCl in the KCl-K2B4O7-H2O ternary system at 308.15 K by EMF method [J].
Zhong Si-yao ;
Sang Shi-hua ;
Zhang Jun-jie .
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES, 2013, 29 (06) :1189-1192
[45]   Study of bromide salts solubility in the (m1KBr + m2CaBr2)(aq) system at T=323.15 K. Thermodynamic model of solution behaviour and (solid plus liquid) equilibria in the ternaries (m1KBr + m2CaBr2)(aq), and (m1MgBr2 + m2CaBr2)(aq), and in the quinary (Na plus K plus Mg plus Ca + Br + H2O) systems to high concentration and temperature [J].
Christov, Christomir .
JOURNAL OF CHEMICAL THERMODYNAMICS, 2012, 55 :7-22
[46]   Phase equilibria in the aqueous ternary systems (LiCl + LiBO2 + H2O) and (Li2SO4 + LiBO2 H2O) at 323.15 K and 0.1 MPa [J].
Li, Long ;
Guo, Yafei ;
Zhang, Sisi ;
Shen, Mengmeng ;
Deng, Tianlong .
FLUID PHASE EQUILIBRIA, 2017, 436 :13-19
[47]   Measurements and calculations of solid-liquid equilibria in two quaternary systems: LiCl-NaCl-SrCl2-H2O and LiCl-KCl-SrCl2-H2O at 298 K [J].
Nie, Guo-Liang ;
Sang, Shi-Hua ;
Cui, Rui-Zhi ;
Wu, Zhong-Zhong ;
Ye, Chao ;
Gao, Yun-Yun .
FLUID PHASE EQUILIBRIA, 2020, 509
[48]   Solid-liquid Phase Equilibria of Li+, Na+, Ca2+//Cl--H2O Quaternary System at 298.15 and 323.15 K [J].
Li, Jie ;
Zhou, Huan ;
Yang, Jie ;
Xu, Cunbing ;
Wang, Sifan ;
Li, Yifan ;
Chen, Jiangbo .
JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2024, 69 (03) :1380-1386
[49]   Mean Activity Coefficients of NaCl in NaCl-CdCl2-H2O Ternary System at 298.15 K by Potential Difference Method [J].
Wang, Dan ;
Yang, Yu-Yan ;
Zhang, Xue-Ping ;
Sang, Shi-Hua .
JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2016, 61 (09) :3027-3033
[50]   Isopiestic determination of vapor pressures and osmotic coefficients and the ion-interaction model for Li2B4O7-H2O system at 298.15 K [J].
Zhang, AY ;
Yao, Y ;
Song, PS .
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE, 2004, 25 (10) :1934-1936