Room temperature ionic liquids as novel media for ‘clean’ liquid–liquid extraction

1998 ◽  
pp. 1765-1766 ◽  
Author(s):  
Jonathan G. Huddleston ◽  
Heather D. Willauer ◽  
Richard P. Swatloski ◽  
Ann E. Visser ◽  
Robin D. Rogers
Keyword(s):  
Ionic Liquids ◽  
Room Temperature ◽  
Liquid Extraction ◽  
Room Temperature Ionic Liquids ◽  
Liquid Liquid Extraction

LIQUID/LIQUID EXTRACTION OF METAL IONS IN ROOM TEMPERATURE IONIC LIQUIDS

2001 ◽  
Vol 36 (5-6) ◽  
pp. 785-804 ◽  
Author(s):  
Ann E. Visser ◽  
Richard P. Swatloski ◽  
Scott T. Griffin ◽  
Deborah H. Hartman ◽  
Robin D. Rogers
Keyword(s):  
Ionic Liquids ◽  
Metal Ions ◽  
Room Temperature ◽  
Liquid Extraction ◽  
Room Temperature Ionic Liquids ◽  
Liquid Liquid Extraction

Liquid–liquid extraction of caprolactam from water using room temperature ionic liquids

2013 ◽  
Vol 104 ◽  
pp. 263-267 ◽  
Author(s):  
Dong-xuan Chen ◽  
Xiao-kun OuYang ◽  
Yang-guang Wang ◽  
Li-ye Yang ◽  
Chao-hong He
Keyword(s):  
Ionic Liquids ◽  
Room Temperature ◽  
Liquid Extraction ◽  
Room Temperature Ionic Liquids ◽  
Liquid Liquid Extraction

scholarly journals Liquid-Liquid Extraction in Systems Containing Butanol and Ionic Liquids – A Review

2017 ◽  
Vol 38 (1) ◽  
pp. 97-110 ◽  
Author(s):  
Artur Kubiczek ◽  
Władysław Kamiński
Keyword(s):  
Ionic Liquids ◽  
Room Temperature ◽  
Liquid Extraction ◽  
Butanol Production ◽  
Model Liquid ◽  
New Class ◽  
Liquid Liquid Extraction ◽  
Liquid Systems ◽  
Nrtl Equation ◽  
Equilibrium Data

AbstractRoom-temperature ionic liquids (RTILs) are a moderately new class of liquid substances that are characterized by a great variety of possible anion-cation combinations giving each of them different properties. For this reason, they have been termed as designer solvents and, as such, they are particularly promising for liquid-liquid extraction, which has been quite intensely studied over the last decade. This paper concentrates on the recent liquid-liquid extraction studies involving ionic liquids, yet focusing strictly on the separation of n-butanol from model aqueous solutions. Such research is undertaken mainly with the intention of facilitating biological butanol production, which is usually carried out through the ABE fermentation process. So far, various sorts of RTILs have been tested for this purpose while mostly ternary liquid-liquid systems have been investigated. The industrial design of liquid-liquid extraction requires prior knowledge of the state of thermodynamic equilibrium and its relation to the process parameters. Such knowledge can be obtained by performing a series of extraction experiments and employing a certain mathematical model to approximate the equilibrium. There are at least a few models available but this paper concentrates primarily on the NRTL equation, which has proven to be one of the most accurate tools for correlating experimental equilibrium data. Thus, all the presented studies have been selected based on the accepted modeling method. The reader is also shown how the NRTL equation can be used to model liquid-liquid systems containing more than three components as it has been the authors’ recent area of expertise.

Room Temperature Ionic Liquids as Novel Media for Zn Ions Extraction from Aqueous Solutions

2012 ◽  
Vol 1380 ◽  
Author(s):  
Leticia E. Hernández Cruz ◽  
Felipe Legorreta García ◽  
Ana M. Herrera González
Keyword(s):  
Ionic Liquids ◽  
Room Temperature ◽  
Extraction Process ◽  
Distribution Coefficients ◽  
Liquid Extraction ◽  
Metal Extraction ◽  
High Affinity ◽  
Low Viscosity ◽  
Liquid Liquid Extraction ◽  
Zn Ions

ABSTRACTWastewaters often contain offensive cations. Because of their high affinity for water, it is difficult to remove those using conventional solvents for liquid- liquid extraction [1]. Hydrophobic ionic liquids may provide a useful extraction process. Because the properties of ionic liquids are turnable, it may be possible to identify some ionic liquids that have low viscosity, very low solubility in water, and high affinity for select metal ions [2]. In this sense in this work liquid- liquid extraction of dilute Zn ions from water was performed near room temperature with two ionic liquids (IL). Distribution coefficients are reported for Zn ions extracted with bromide 1-hexyl-pyridinium and bromide 1-octyl-pyridinium diluted in decanol. The extraction has been studied, and these confirmed that the metal extraction proceeds via a cation – exchange mechanism. Furthermore, stripping of Zn (II) from ILs into an aqueous phase by sulfuric acid (1 M) and recycling of the extracting ILs phase was successfully accomplished.

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