Three-liquid-phase extraction systems for separation of phenol and p-nitrophenol from wastewater

被引：60

作者：

Shen, Shufeng

Chang, Zhidong

Liu, Huizhou

机构：

[1] Chinese Acad Sci, Inst Proc Engn, Lab Separat Sci & Engn, State Key Lab Biochem Engn, Beijing 100080, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2006年 / 49卷 / 03期

基金：

中国国家自然科学基金;

关键词：

three-liquid-phase extraction; separation; phenol; p-nitrophenol; wastewater treatment;

D O I：

10.1016/j.seppur.2005.09.017

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Several new three-liquid-phase extraction systems containing ethylene oxide-propylene oxide (EOPO) random copolymers have been developed. These systems were used for treating simulated wastewater containing phenol and p-nitrophenol (p-NP). Effects of pH, phase-forming components and their concentrations on partition behaviors of phenolic compounds were investigated. Results showed that phenol and p-NP could be unevenly and efficiently partitioned among the phases at pH 9.3, with about 80% phenol in the top phase and 95% p-NP in middle phase, respectively. Separation factor of two compounds increased remarkably with the increase of pH froth 4.0 to 10.0. The three-liquid-phase system containing poly(ethylene glycol-ran-propylene glycol) and butyl acetate (BA) was proved to be suitable for phenol and p-NP separation. The separation factor was over 13 at pH 8.43. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：217 / 222

页数：6

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