NaCl and KCl effect on (vapour plus liquid) equilibrium of binary, ternary and quaternary systems involving water, ethanol and glycerol at low pressures

被引：11

作者：

Faggion, Heron ^{[1
]}

Gaschi, Paola S. ^{[1
]}

Corazza, Marcos L. ^{[1
]}

Cardozo-Filho, Lucio ^{[2
]}

Igarashi-Mafra, Luciana ^{[1
]}

Mafra, Marcos R. ^{[1
]}

机构：

[1] Fed Univ Parana UFPR, Dept Chem Engn, Polytech Ctr, BR-81531990 Curitiba, PR, Brazil

[2] Maringa State Univ UEM, Dept Chem Engn, Ave Colombo 5790, BR-87020900 Maringaa, PR, Brazil

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2016年 / 98卷

关键词：

Biodiesel; Electrolytes; Salting-in; Salting-out; Glycerol purification; ACETONE-METHANOL SYSTEM; DIFFERENT TEMPERATURES; BIODIESEL PRODUCTION; EQUATION; ALCOHOL;

D O I：

10.1016/j.jct.2016.02.026

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Isobaric (vapour + liquid) equilibrium data at pressures of (14.0 to 91.2) kPa over the whole composition range were measured for binary systems of (ethanol + glycerol), (water + NaCl) and (water + KCl). Moreover, ternary systems (glycerol + ethanol + NaCl), (glycerol + water + NaCl) and (glycerol + water + KCl) and quaternary system of (water + ethanol + NaCl + glycerol) were measured at 91.2 kPa. All data were obtained using a Othmer-type ebulliometer. Due to the low solubility of NaCl in ethanol, it was not observed the salt effect on the VLE for the system (ethanol + NaCl + glycerol). The presence of salt (NaCl or KCl) increased the boiling point of water, and this effect was less pronounced at lower pressures, probably due to the low resistance to volatilization at such pressures. Simultaneous salting-in and salting-out effect were observed in the systems (water + NaCl + glycerol) and (water + KCl + glycerol), which is characterized in literature as a anomalous behaviour. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：95 / 101

页数：7

共 24 条

[1] (Liquid plus liquid) equilibrium for the system {ethyl stearate(1) + ethanol(2) + glycerol(3)} [J].

Andrade, Eriel F. ;

Igarashi-Mafra, Luciana ;

Mafra, Marcos R. ;

Corazza, Marcos L. .

JOURNAL OF CHEMICAL THERMODYNAMICS, 2012, 47 :213-218

[2] Liquid-liquid equilibrium of pseudoternary systems containing glycerol plus ethanol plus ethylic biodiesel from crambe oil (Crambe abyssinica) at T/K = (298.2,318.2,338.2) and thermodynamic modeling [J].

Basso, Rodrigo Correa ;

de Almeida Meirelles, Antonio Jose ;

Caldas Batista, Eduardo Augusto .

FLUID PHASE EQUILIBRIA, 2012, 333 :55-62

[3] Activity coefficient at infinite dilution measurements for organic solutes (polar and non-polar) in fatty compounds: Saturated fatty acids [J].

Belting, Patricia C. ;

Rarey, Juergen ;

Gmehling, Juergen ;

Ceriani, Roberta ;

Chiavone-Filho, Osvaldo ;

Meirelles, Antonio J. A. .

JOURNAL OF CHEMICAL THERMODYNAMICS, 2012, 55 :42-49

[4] (Vapor plus liquid) equilibrium for the binary systems {water plus glycerol} and {ethanol plus glycerol, ethyl stearate, and ethyl palmitate} at low pressures [J].

Coelho, Renata ;

dos Santos, Priscilla G. ;

Mafra, Marcos R. ;

Cardozo-Filho, Lucio ;

Corazza, Marcos L. .

JOURNAL OF CHEMICAL THERMODYNAMICS, 2011, 43 (12) :1870-1876

[5] Liquid-liquid equilibria for ternary systems containing ethyl esters, ethanol and glycerol at 323.15 and 353.15 K [J].

Follegatti-Romero, Luis A. ;

Oliveira, Mariana B. ;

Batista, Fabio R. M. ;

Batista, Eduardo A. C. ;

Coutinho, Joao A. P. ;

Meirelles, Antonio J. A. .

FUEL, 2012, 94 (01) :386-394

[6]

Frenkel M., 2008, THERMODYNAMIC PROPER

[7] Salt effects on vapour-liquid equilibrium of acetone-methanol system [J].

Iliuta, MC ;

Thyrion, FC .

FLUID PHASE EQUILIBRIA, 1996, 121 (1-2) :235-252

[8] Salt effect of LiCl on vapor-liquid equilibrium of the acetone-methanol system [J].

Iliuta, MC ;

Iliuta, I ;

Landauer, OM ;

Thyrion, FC .

FLUID PHASE EQUILIBRIA, 1998, 149 (1-2) :163-176

[9] Vapour-liquid equilibrium of the acetone-methanol system in the presence of KSCN and comparison with other salts [J].

Iliuta, MC ;

Thyrion, FC ;

Landauer, OM .

FLUID PHASE EQUILIBRIA, 1997, 130 (1-2) :253-269

[10]

Joseph Ravi Devasahayam E.M., 1981, J CHEM ENG DATA, V26, P298

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