Separation of nitrophenols. Equilibriums in bi- and tri-phasic systems

被引：40

作者：

Diaconu, Ioana ^{[2
]}

Aboul-Enein, Hassan Y. ^{[1
,3
]}

Al-Omar, Mohammed A. ^{[3
]}

Nechifor, Gheorghe ^{[2
]}

Ruse, Elena ^{[2
]}

Bunaciu, Andrei A. ^{[4
]}

Totu, Eugenia Eftimie ^{[2
]}

机构：

[1] Natl Res Ctr, Pharmaceut & Med Chem Dept, Cairo, Egypt

[2] Univ Politech Bucharest, Fac Appl Chem & Mat Sci, Dept Analyt Chem, Bucharest 011061, Romania

[3] King Saud Univ, Coll Pharm, Dept Pharmaceut Chem, Riyadh 11451, Saudi Arabia

[4] CROMATEC PLUS SRL, Analyt Res Dept, Bucharest 060114 6, Romania

来源：

ARABIAN JOURNAL OF CHEMISTRY | 2011年 / 4卷 / 01期

关键词：

p-Nitrophenol; o-Nitrophenol; 2,4-Dinitrophenol; Extraction; Transport through bulk liquid membranes; Nitrophenols separation; SUPPORTED LIQUID-MEMBRANES; FUNCTIONALIZED POLYORGANOSILOXANES; AQUEOUS-SOLUTIONS; TRANSPORT; RECOVERY; PHENOL; 2-CHLOROPHENOL; EXTRACTION;

D O I：

10.1016/j.arabjc.2010.06.025

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The paper presents experimental data obtained in the study of liquid-liquid partition equilibriums in biphasic system in order to optimize the process of transport through bulk liquid membranes (triphasic partition systems). The partition equilibriums of some nitrophenols using chloroform as extraction solvent and membranary solvent, respectively, were studied. The influence of the pH on the partition equilibriums was investigated. The repartition constants and the pK(a) values of the studied nitrophenols were calculated. Nitrophenols were transferred in triphasic system from a feed phase with pH 2, through a chloroform liquid membrane, into a receiving phase with pH 12, with efficiencies over 90%. (C) 2010 King Saud University. All rights reserved.

引用

页码：99 / 103

页数：5

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