Measurement and correlation of equilibrium data for aqueous two-phase system ethanol plus water plus K2HPO4

被引：0

作者：

Lin, JQ ^{[1
]}

Tan, PH ^{[1
]}

Jin, CY ^{[1
]}

Li, MC ^{[1
]}

机构：

[1] Huaqiao Univ, Coll Mat Sci & Engn, Quanzhou 362011, Peoples R China

来源：

CHEMICAL RESEARCH IN CHINESE UNIVERSITIES | 2004年 / 20卷 / 02期

关键词：

aqueous two-phase system; solubility; turbidity titration; LLE; ethanol; K2HPO4;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The isothermal solubility data of aqueous two-phase system ethanol+water+K2HPO4 were determined with the turbidity titration method at 303.2 K. The binodal curves were described by using the Mistry equation very well. An experimental procedure for measuring the liquid-liquid equilibrium data of the aqueous two-phase system was proposed, in which the concentrations of the coexisting phases were determined with the corresponding densities of the solution. The tie lines were satisfactorily described by using the Othmer-Tobias and Bancroft equations.

引用

页码：195 / 199

页数：5

共 18 条

[1]

BERLO M, 1997, IND ENG CHEM RES, V36, P2473

[2] EQUILIBRIUM IN BIPHASIC AQUEOUS SYSTEMS - A MODEL FOR THE EXCESS GIBBS ENERGY AND DATA FOR THE SYSTEM H2O-NACL-1-PROPANOL AT 25-DEGREES-C [J].

CHELUGET, EL ;

MARX, S ;

WEBER, ME ;

VERA, JH .

JOURNAL OF SOLUTION CHEMISTRY, 1994, 23 (02) :275-305

[3]

Gao YT, 2001, CHINESE J ANAL CHEM, V29, P901

[4]

[高云涛 Gao Yuntao], 2002, [化学研究与应用, Chemical Research and Application], V14, P320

[5] PHASE-DIAGRAMS OF NEW AQUEOUS PHASE SYSTEMS COMPOSED OF ALIPHATIC-ALCOHOLS, SALTS AND WATER [J].

GREVE, A ;

KULA, MR .

FLUID PHASE EQUILIBRIA, 1991, 62 (1-2) :53-63

[6]

[霍清 Huo Qing], 2002, [精细化工, Fine Chemical], V19, P65

[7]

LI QM, 2001, CHINESE J APPL CHEM, V18, P241

[8]

LIU Q, 1998, J HENAN NORMAL U NAT, V26, P44

[9] Model phase separations of proteins using aqueous/ethanol components [J].

Louwrier, A .

BIOTECHNOLOGY TECHNIQUES, 1998, 12 (05) :363-365

[10] Mathematical modelling and computer simulation of aqueous two-phase continuous protein extraction [J].

Mistry, SL ;

Kaul, A ;

Merchuk, JC ;

Asenjo, JA .

JOURNAL OF CHROMATOGRAPHY A, 1996, 741 (02) :151-163

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