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Water Activity Measurements by the Isopiestic Method for the MCl-CaCl2-H2O (M = Na, K) Systems at 323.15 K
Han, Haijun1,2; Guo, Lijiang2; Li, Dongdong2; Dong, Ouyang2; Yao, Yan2; Zhang, Ning1; Zeng, Dewen1
2015-08-01
Source PublicationJOURNAL OF CHEMICAL AND ENGINEERING DATA
Volume60Issue:8Pages:2285-2290
SubtypeArticle
AbstractIn 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.
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS KeywordION-INTERACTION MODEL ; AQUEOUS CALCIUM-CHLORIDE ; THERMODYNAMIC PROPERTIES ; ACTIVITY-COEFFICIENTS ; OSMOTIC COEFFICIENTS ; VAPOR-PRESSURES ; T=298.15 K ; REPRESENTATION ; MIXTURES ; MULTICOMPONENT
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Multidisciplinary ; Engineering, Chemical
WOS IDWOS:000359683300014
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Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6150
Collection青海盐湖研究所知识仓储
盐湖资源与化学实验室
Affiliation1.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
Recommended Citation
GB/T 7714
Han, Haijun,Guo, Lijiang,Li, Dongdong,et al. Water Activity Measurements by the Isopiestic Method for the MCl-CaCl2-H2O (M = Na, K) Systems at 323.15 K[J]. JOURNAL OF CHEMICAL AND ENGINEERING DATA,2015,60(8):2285-2290.
APA Han, Haijun.,Guo, Lijiang.,Li, Dongdong.,Dong, Ouyang.,Yao, Yan.,...&Zeng, Dewen.(2015).Water Activity Measurements by the Isopiestic Method for the MCl-CaCl2-H2O (M = Na, K) Systems at 323.15 K.JOURNAL OF CHEMICAL AND ENGINEERING DATA,60(8),2285-2290.
MLA Han, Haijun,et al."Water Activity Measurements by the Isopiestic Method for the MCl-CaCl2-H2O (M = Na, K) Systems at 323.15 K".JOURNAL OF CHEMICAL AND ENGINEERING DATA 60.8(2015):2285-2290.
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