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Chemical Equilibrium Modeling and Experimental Measurement of Solubility for Friedel's Salt in the Na-OH-Cl-NO3-H2O Systems up to 200 degrees C
Alternative TitleInd. Eng. Chem. Res.
Ma, Jiayu; Li, Zhibao
2010-10-06
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
Volume49Issue:19Pages:8949-8958
AbstractA chemical model for the solubility of Friedel's salt (FS, 3CaO center dot Al2O3 center dot CaCl2 center dot 10H(2)O) was developed. The model was built with the help of the OLI platform via regression of experimental solubility data for FS in the Na-OH-CI-NO3-H2O systems. The solubility of FS in water was measured using a batch nickel autoclave over the temperature range of 20-200 degrees C, and the solubility product of FS (log(10) K-sp was obtained. It was found that the solubility of FS in water shows a maximum value as a function of temperature. The solubility of ES in 0-5 mol/L NaOH and 0-2.5 mol/L NaCl solutions was found to decrease with increasing NaOH and NaCl concentrations, because of the common ion effect; however, in 0-2.5 mol/L NaNO3 solutions, it was found to increase because of complexation. During the regression analysis, it was found that CaOH+ plays an important role in solubility modeling, and its dissociation constant was determined by an empirical equation. New Bromley-Zemaitis activity coefficient model parameters for the Ca2+-OH, CaOH+-0H(-), and CaCl+-OH- ion pairs were also regressed, using the experimental solubility data generated in the present study. The new model was shown to successfully predict the solubility of FS in mixed NaOH + NaNO3 solutions not used in model parametrization. With the aid of the newly developed model, the concentration and temperature effects on calcium species distribution were analyzed.; A chemical model for the solubility of Friedel's salt (FS, 3CaO center dot Al2O3 center dot CaCl2 center dot 10H(2)O) was developed. The model was built with the help of the OLI platform via regression of experimental solubility data for FS in the Na-OH-CI-NO3-H2O systems. The solubility of FS in water was measured using a batch nickel autoclave over the temperature range of 20-200 degrees C, and the solubility product of FS (log(10) K-sp was obtained. It was found that the solubility of FS in water shows a maximum value as a function of temperature. The solubility of ES in 0-5 mol/L NaOH and 0-2.5 mol/L NaCl solutions was found to decrease with increasing NaOH and NaCl concentrations, because of the common ion effect; however, in 0-2.5 mol/L NaNO3 solutions, it was found to increase because of complexation. During the regression analysis, it was found that CaOH+ plays an important role in solubility modeling, and its dissociation constant was determined by an empirical equation. New Bromley-Zemaitis activity coefficient model parameters for the Ca2+-OH, CaOH+-0H(-), and CaCl+-OH- ion pairs were also regressed, using the experimental solubility data generated in the present study. The new model was shown to successfully predict the solubility of FS in mixed NaOH + NaNO3 solutions not used in model parametrization. With the aid of the newly developed model, the concentration and temperature effects on calcium species distribution were analyzed.
KeywordPartial Molal Properties Calcium-sulfate High-pressures Transport-properties Aqueous-solutions Thermodynamic Properties Activity-coefficients Strong Electrolytes Temperatures Standard
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/ie101028c
URL查看原文
Indexed BySCI
Language英语
WOS KeywordPARTIAL MOLAL PROPERTIES ; CALCIUM-SULFATE ; HIGH-PRESSURES ; TRANSPORT-PROPERTIES ; AQUEOUS-SOLUTIONS ; THERMODYNAMIC PROPERTIES ; ACTIVITY-COEFFICIENTS ; STRONG ELECTROLYTES ; TEMPERATURES ; STANDARD
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000282161700009
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6277
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Ma, Jiayu,Li, Zhibao. Chemical Equilibrium Modeling and Experimental Measurement of Solubility for Friedel's Salt in the Na-OH-Cl-NO3-H2O Systems up to 200 degrees C[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2010,49(19):8949-8958.
APA Ma, Jiayu,&Li, Zhibao.(2010).Chemical Equilibrium Modeling and Experimental Measurement of Solubility for Friedel's Salt in the Na-OH-Cl-NO3-H2O Systems up to 200 degrees C.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,49(19),8949-8958.
MLA Ma, Jiayu,et al."Chemical Equilibrium Modeling and Experimental Measurement of Solubility for Friedel's Salt in the Na-OH-Cl-NO3-H2O Systems up to 200 degrees C".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 49.19(2010):8949-8958.
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