Liquid phase equilibria of (water plus phosphoric acid+1-butanol or butyl acetate) ternary systems at T=308.2 K

被引：36

作者：

Ghanadzadeh, H. ^{[1
,2
]}

Ghanadzadeh, A. ^{[1
]}

Bahrpaima, Kh. ^{[1
]}

机构：

[1] Univ Guilan, Fac Sci, Dept Chem, Rasht, Iran

[2] Univ Guilan, Dept Chem Engn, Rasht, Iran

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2008年 / 40卷 / 12期

关键词：

LLE data; Ternary systems; UNIQUAC model; Extraction processes;

D O I：

10.1016/j.jct.2008.07.001

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

(Liquid + liquid) equilibria and tie lines for the ternary systems of (water + phosphoric acid + 1-butanol) and (water + phosphoric acid + butyl acetate) were measured at T = 308.2 K. The experimental ternary (liquid + liquid) equilibrium data were correlated with the UNIQUAC model. The reliability of the experimental tie lines was confirmed using Othmer-Tobias correlation. The average root-mean-square deviation (RMSD) values of (water + phosphoric acid + 1-butanol) and (water + phosphoric acid+butyl acetate) systems were 2.17% and 2.16%, respectively. Distribution coefficients and separation factors were measured to evaluate the extracting capability of the solvents. The results show that butyl acetate may be considered as a reliable organic solvent for the extraction of phosphoric acid from aqueous solutions. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1666 / 1670

页数：5

共 31 条

[1] STATISTICAL THERMODYNAMICS OF LIQUID-MIXTURES - NEW EXPRESSION FOR EXCESS GIBBS ENERGY OF PARTLY OR COMPLETELY MISCIBLE SYSTEMS [J].