Extraction of Metal Ions with Task Specific Ionic Liquids: Influence of a Coordinating Anion

被引：34
|
作者：
Zhou, Yingsai [1 ]
Boudesocque, Stephanie [1 ]
Mohamadou, Aminou [1 ]
Dupont, Laurent [1 ]
机构：
[1] Univ Reims, ICMR, CNRS UMR 7312, UFR Sci Exactes & Nat, F-51687 Reims 2, France
来源：
SEPARATION SCIENCE AND TECHNOLOGY | 2015年 / 50卷 / 01期
关键词：
metal extraction; back-extraction; reusability; liquid-liquid extraction; ionic liquids; AQUEOUS-SOLUTIONS; TEMPERATURE; COMPLEXES; MECHANISM; DICYANAMIDE; GREENNESS; EXCHANGE; MERCURY; CATIONS; MODE;
D O I：
10.1080/01496395.2014.952747
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Hydrophobic ionic liquids (ILs) were generated by association between a cationic ester derivative of betaine and bis(trifluoromethylsulfonyl)imide (Tf2N-) or dicyanamide (Dca(-)) anions. Extraction of Cu(II), Ni(II), Pb(II), and Cd(II) from water was performed with these ILs at room temperature. The use of Dca(-) anion greatly enhances the extraction efficiency of IL phase towards metal ions extraction. The metal could be back-extracted from the ionic liquid phase with aqueous EDTA solutions. The metal extractability of the ionic liquid after the back-extraction is equivalent to that of the fresh mixture showing that ionic liquid can be reused for several extraction and back-extraction cycles.
引用
收藏
页码：38 / 44
页数：7
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