Solubility of glycine in binary system of ethanol+water solvent mixtures: Experimental data and thermodynamic modeling

Zheng Cao; Yonghong Hu; Jiaojiao Li; Yumei Kai; Wenge Yang

doi:10.1016/j.fluid.2013.09.013

Solubility of glycine in binary system of ethanol+water solvent mixtures: Experimental data and thermodynamic modeling

Zheng Cao, Yonghong Hu, Jiaojiao Li, Yumei Kai, Wenge Yang

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

The solubility of glycine in different compositions of ethanol-water binary solvent mixtures was measured over the temperature range of (278.15-328.15) K at intervals of 5.00. K by employing an analytical stirred-flask method. The solubility data were fitted using the modified Apelblat equation and the combined nearly ideal binary solvent/Redlich-Kister (CNIBS/R-K) equation, respectively. The modified Apelblat equation was found to regress the solubility data much better than the other two equations. The Van't Hoff equation was used to calculate the apparent molar enthalpy and the apparent molar entropy of solution in the binary mixture solvent system, the dissolving process was endothermic and entropy-driving. The experiment results and correlation models could be used as essential data in the purification of glycine.

Original language	English
Pages (from-to)	156-160
Number of pages	5
Journal	Fluid Phase Equilibria
Volume	360
DOIs	https://doi.org/10.1016/j.fluid.2013.09.013
State	Published - 25 Dec 2013

Keywords

Glycine
Solubility
The modified Apelblat equation
Thermodynamic

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10.1016/j.fluid.2013.09.013

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title = "Solubility of glycine in binary system of ethanol+water solvent mixtures: Experimental data and thermodynamic modeling",

abstract = "The solubility of glycine in different compositions of ethanol-water binary solvent mixtures was measured over the temperature range of (278.15-328.15) K at intervals of 5.00. K by employing an analytical stirred-flask method. The solubility data were fitted using the modified Apelblat equation and the combined nearly ideal binary solvent/Redlich-Kister (CNIBS/R-K) equation, respectively. The modified Apelblat equation was found to regress the solubility data much better than the other two equations. The Van't Hoff equation was used to calculate the apparent molar enthalpy and the apparent molar entropy of solution in the binary mixture solvent system, the dissolving process was endothermic and entropy-driving. The experiment results and correlation models could be used as essential data in the purification of glycine.",

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author = "Zheng Cao and Yonghong Hu and Jiaojiao Li and Yumei Kai and Wenge Yang",

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T1 - Solubility of glycine in binary system of ethanol+water solvent mixtures

T2 - Experimental data and thermodynamic modeling

AU - Cao, Zheng

AU - Hu, Yonghong

AU - Li, Jiaojiao

AU - Kai, Yumei

AU - Yang, Wenge

PY - 2013/12/25

Y1 - 2013/12/25

N2 - The solubility of glycine in different compositions of ethanol-water binary solvent mixtures was measured over the temperature range of (278.15-328.15) K at intervals of 5.00. K by employing an analytical stirred-flask method. The solubility data were fitted using the modified Apelblat equation and the combined nearly ideal binary solvent/Redlich-Kister (CNIBS/R-K) equation, respectively. The modified Apelblat equation was found to regress the solubility data much better than the other two equations. The Van't Hoff equation was used to calculate the apparent molar enthalpy and the apparent molar entropy of solution in the binary mixture solvent system, the dissolving process was endothermic and entropy-driving. The experiment results and correlation models could be used as essential data in the purification of glycine.

AB - The solubility of glycine in different compositions of ethanol-water binary solvent mixtures was measured over the temperature range of (278.15-328.15) K at intervals of 5.00. K by employing an analytical stirred-flask method. The solubility data were fitted using the modified Apelblat equation and the combined nearly ideal binary solvent/Redlich-Kister (CNIBS/R-K) equation, respectively. The modified Apelblat equation was found to regress the solubility data much better than the other two equations. The Van't Hoff equation was used to calculate the apparent molar enthalpy and the apparent molar entropy of solution in the binary mixture solvent system, the dissolving process was endothermic and entropy-driving. The experiment results and correlation models could be used as essential data in the purification of glycine.

KW - Glycine

KW - Solubility

KW - The modified Apelblat equation

KW - Thermodynamic

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DO - 10.1016/j.fluid.2013.09.013

M3 - 文章

AN - SCOPUS:84885354640

SN - 0378-3812

VL - 360

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EP - 160

JO - Fluid Phase Equilibria

JF - Fluid Phase Equilibria

ER -

Solubility of glycine in binary system of ethanol+water solvent mixtures: Experimental data and thermodynamic modeling

Abstract

Keywords

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