Extraction of soluble dyes from aqueous solutions with quaternary ammonium-based ionic liquids

被引：43

作者：

Chen, Xiaochun ^{[1
]}

Li, Fanlei ^{[1
]}

Asumana, Charles ^{[1
]}

Yu, Guangren ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Beijing Key Lab Membrane Sci & Technol, Beijing 100029, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2013年 / 106卷

基金：

中国国家自然科学基金;

关键词：

Ionic liquids; Extract; Methyl orange; Methylene blue; WASTE-WATER; PARTITION-COEFFICIENTS; METHYL-ORANGE; AZO DYES; REMOVAL; ADSORPTION; TOXICITY; COMPLEX; SALTS;

D O I：

10.1016/j.seppur.2013.01.002

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this work, four quaternary ammonium-based ionic liquids are used to extract methyl orange and methylene blue (major dye species in industry) from water. The influence of extraction time, temperature, salt effect, and pH on extraction efficiency is systematically investigated. Tricaprylmethylammonium thiocyanate ([N-1888][SCN]) exhibits optimal ability for extracting both dyes; the extraction efficiency reaches 89.09% and 64.14% for methyl orange and methylene blue, respectively. It is also observed that the efficiency is remarkably increased by adding NaCl in the extraction system except in the extraction of methyl orange using [N-1888][SCN]. This work shows that ionic liquids might provide new options in the disposal of dye-wastewater. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.

引用

页码：105 / 109

页数：5

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