Design and Synthesis of Piperazine-Based Task-Specific Ionic Liquids for Liquid–Liquid Extraction of CuII, NiII, and CoII from Water

2015 ◽  
Vol 68 (5) ◽  
pp. 825 ◽  
Author(s):  
Weiyuan Xu ◽  
Liang Wang ◽  
Jianying Huang ◽  
Gerui Ren ◽  
Dandan Xu ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Metal Ions ◽  
Functional Groups ◽  
Extraction Process ◽  
Liquid Extraction ◽  
Intrinsic Structure ◽  
Design And Synthesis ◽  
Coordination Sites ◽  
Liquid Liquid Extraction ◽  
Effects Of Ph

The novel synthesis of task-specific ionic liquids (TSILs) introducing piperazine substructures was described. Piperazine functional groups were easily grafted onto an imidazolium cationic derivative via a simple four-step process starting from available materials such as imidazole, ethylene glycol, and 1-butylamine or 3-dimethylaminopropylamine. Effects of pH, temperature, and structure of functional groups on the performance of liquid–liquid extraction of Cu2+, Ni2+, and Co2+ from water were investigated. It was found that TSILs were efficient for removal of these metal ions in mild acid solutions. The TSIL with an extra nitrogen atom showed a higher capability to separate metal ions, especially for Cu2+. This may be ascribed to the intrinsic structure of the functional groups – the more coordination sites, the higher the affinity for the metal ions. Furthermore, the thermodynamics indicated that the extraction process was exothermic and spontaneous in nature.

Fluorous ionic liquids as solvents for the liquid–liquid extraction of metal ions by macrocyclic polyethers

Talanta ◽  
2006 ◽  
Vol 69 (2) ◽  
pp. 527-531 ◽  
Author(s):  
H HEITZMAN ◽  
B YOUNG ◽  
D RAUSCH ◽  
P RICKERT ◽  
D STEPINSKI ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Metal Ions ◽  
Liquid Extraction ◽  
Macrocyclic Polyethers ◽  
Liquid Liquid Extraction

scholarly journals Homogeneous liquid–liquid extraction of metal ions with non-fluorinated bis(2-ethylhexyl)phosphate ionic liquids having a lower critical solution temperature in combination with water

2015 ◽  
Vol 51 (75) ◽  
pp. 14183-14186 ◽  
Author(s):  
Daphne Depuydt ◽  
Liwang Liu ◽  
Christ Glorieux ◽  
Wim Dehaen ◽  
Koen Binnemans
Keyword(s):  
Ionic Liquids ◽  
Metal Ions ◽  
Transition Metal Ions ◽  
Liquid Extraction ◽  
Phase Behaviour ◽  
Solution Temperature ◽  
Temperature Dependent ◽  
Critical Solution Temperature ◽  
Homogeneous Liquid ◽  
Liquid Liquid Extraction

Bis(2-ethylhexyl)phosphate ionic liquids show a temperature-dependent phase behaviour of the LCST-type and can extract transition metal ions very efficiently via homogeneous liquid–liquid extraction.

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.

scholarly journals Design of Liquid-Liquid Extraction Process for Separation of Metal Ions.

2001 ◽  
Vol 48 (2) ◽  
pp. 138-143
Author(s):  
Syouhei NISHIHAMA ◽  
Takayuki HIRAI ◽  
Isao KOMASAWA
Keyword(s):  
Metal Ions ◽  
Extraction Process ◽  
Liquid Extraction ◽  
Separation Of Metal Ions ◽  
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

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.

Experimental and numerical investigation of electrostatic spray liquid-liquid extraction with ionic liquids

2012 ◽  
Vol 33 (1) ◽  
pp. 167-183 ◽  
Author(s):  
Marek Krawczyk ◽  
Kamil Kamiński ◽  
Jerzy Petera
Keyword(s):  
Ionic Liquids ◽  
Numerical Investigation ◽  
High Viscosity ◽  
Liquid Extraction ◽  
Separation Processes ◽  
Organic Mixture ◽  
Liquid Liquid Extraction ◽  
Key Factor ◽  
A New Technique ◽  
Electrostatic Spray

Experimental and numerical investigation of electrostatic spray liquid-liquid extraction with ionic liquids A new concept of an electrostatic spray column for liquid-liquid extraction was investigated. An important problem for separation processes is the presence of azeotropic or close-boiling mixtures in their production, for example heptane with ethanol, since the separation is impossible by ordinary distillation. The use of ionic liquids (IL) as a dispersed solvent specially engineered for any specific organic mixture in terms of selectivity is a key factor to successful separation. As IL present particularly attractive combination of favorable characteristics for the separation of heptane and ethanol, in this work we use 1-butyl-3-methylimidazolium methyl sulfate [BMIM][MeSO4]. Because of high viscosity and relatively high cost of IL a new technique was introduced, consisting in the electrostatically spray generation to enhance the mass transport between the phases. In order to optimally design the geometry of the contactor a series of numerical simulation was performed. Especially multi-nozzle variants for better exploitation of contactor volume were investigated. Experiments showed excellent possibility of control of the dispersion characteristics by applied voltage and thus control of the rate of extraction. The preliminary simulations based on our mathematical model for a three nozzle variant exhibited visual agreement with the theory of electrostatics.

ZIF-8-porous ionic liquids for the extraction of 2,2,3,3-tetrafluoro-1-propanol and water mixture

2021 ◽  
Author(s):  
Zenghui Wang ◽  
Pingping Zhao ◽  
Jimin Wu ◽  
Jun Gao ◽  
Lianzheng Zhang ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Special Class ◽  
Liquid Extraction ◽  
Water Mixture ◽  
Liquid Liquid Extraction

The design of stable ionic liquids (ILs) has become crucial for efficient liquid-liquid extraction (LLE) of alcohol and water. Porous ionic liquids (PILs), as a special class of ILs, have...

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