Computer-aided Ionic Liquids Design for Separation Processes

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.

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Lipase purification using ionic liquids as adjuvants in aqueous two-phase systems

Green Chemistry ◽

10.1039/c5gc00262a ◽

2015 ◽

Vol 17 (5) ◽

pp. 3026-3034 ◽

Cited By ~ 54

Author(s):

Ranyere L. Souza ◽

Sónia P. M. Ventura ◽

Cleide M. F. Soares ◽

João A. P. Coutinho ◽

Álvaro S. Lima

Keyword(s):

Ionic Liquids ◽

Environmentally Friendly ◽

Two Phase ◽

Separation Processes ◽

High Purification ◽

Aqueous Two Phase Systems ◽

Phase Systems ◽

Lipase Purification

Ionic liquids as adjuvant in aqueous two-phase systems (ATPS) are efficient, environmentally friendly, and “biocompatible” separation processes, which allow the high purification of enzymes.

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Computer-aided design of ionic liquids for hybrid process schemes

Computers & Chemical Engineering ◽

10.1016/j.compchemeng.2019.106556 ◽

2019 ◽

Vol 130 ◽

pp. 106556 ◽

Cited By ~ 5

Author(s):

Yuqiu Chen ◽

Evangelia Koumaditi ◽

Rafiqul Gani ◽

Georgios M. Kontogeorgis ◽

John M. Woodley

Keyword(s):

Ionic Liquids ◽

Computer Aided Design ◽

Hybrid Process ◽

Computer Aided ◽

Aided Design

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Ionic liquids as an enabling tool to integrate reaction and separation processes

Green Chemistry ◽

10.1039/c9gc02553g ◽

2019 ◽

Vol 21 (24) ◽

pp. 6527-6544 ◽

Cited By ~ 12

Author(s):

Rocio Villa ◽

Elena Alvarez ◽

Raul Porcar ◽

Eduardo Garcia-Verdugo ◽

Santiago V. Luis ◽

...

Keyword(s):

Ionic Liquid ◽

Ionic Liquids ◽

Microfluidic Devices ◽

Chemical Processes ◽

Membrane Reactors ◽

Separation Processes ◽

Catalytic Systems

This tutorial review highlights representative examples of ionic liquid (IL)-based (bio)catalytic systems integrating reaction and separation, as a tool for the development of sustainable chemical processes (e.g. IL/scCO2 biphasic reactors, membrane reactors, nanodrop systems, microfluidic devices, supported IL phases, sponge-like ILs, etc.).

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Measurements of Activity Coefficients at Infinite Dilution for Organic Solutes in the Ionic Liquids N-Ethyl- and N-Octyl-N-methylmorpholinium Bis(trifluoromethanesulfonyl)imide. A Useful Tool for Solvent Selection

Molecules ◽

10.3390/molecules25030634 ◽

2020 ◽

Vol 25 (3) ◽

pp. 634 ◽

Cited By ~ 1

Author(s):

Łukasz Marcinkowski ◽

Joachim Eichenlaub ◽

Elham Ghasemi ◽

Żaneta Polkowska ◽

Adam Kloskowski

Keyword(s):

Ionic Liquids ◽

Organic Compounds ◽

Activity Coefficients ◽

Infinite Dilution ◽

Retention Data ◽

Separation Processes ◽

Study Results ◽

Conscious Choice ◽

Potential Applications ◽

Partial Molar Enthalpies

In recent years, many papers describing ionic liquids (IL) as promising solvents in separation techniques have been published. The conscious choice of appropriate ionic liquid as absorption media in effective extraction of selected types of analytes requires deeper understanding of the analyte−IL interactions. Therefore, intensive research is conducted to determine the values of activity coefficient at infinite dilution, which allows us to characterize the nature of these interactions. Based on the inverse gas chromatography retention data, activity coefficients at infinite dilution γ 13 ∞ of 48 different organic compounds in the ionic liquids N-ethyl-N-methylmorpholinium bis(trifluoromethanesulfonyl)imide [C2C1Mor][TFSI] and N-octyl-N-methylmorpholinium bis(trifluoromethanesulfonyl)imide [C8C1Mor][TFSI] were determined. The measurements covered a broad range of volatile organic compounds, including n-alkanes, n-alkenes, n-alkynes, alcohols, aldehydes, ketones, aromatic compounds and common polar solvents, representing different types of interactions. Activity coefficients at infinite dilution were measured in the temperature range from 313.15 to 363.15 K. The excess partial molar enthalpies and entropies at infinite dilution were determined. Selectivity at infinite dilution was also calculated for exemplary separation processes in the hexane/benzene system. The obtained results were analyzed and compared with literature data for ionic liquids containing the same anion [TFSI]¯ and different cations. The study results indicate that some potential applications of the investigated ionic liquids in separation problems exist.

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Solubilities of Gases in Ionic Liquids and its Applications to Separation Processes

Journal of the Vacuum Society of Japan ◽

10.3131/jvsj2.56.88 ◽

2013 ◽

Vol 56 (3) ◽

pp. 88-96 ◽

Cited By ~ 3

Author(s):

Takashi MAKINO ◽

Masato SAKURAI ◽

Mitsuhiro KANAKUBO

Keyword(s):

Ionic Liquids ◽

Separation Processes

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On the Selective Transport of Nutrients through Polymer Inclusion Membranes Based on Ionic Liquids

Processes ◽

10.3390/pr7080544 ◽

2019 ◽

Vol 7 (8) ◽

pp. 544 ◽

Cited By ~ 6

Author(s):

Z. Baicha ◽

M.J. Salar-García ◽

V.M. Ortiz-Martínez ◽

F.J. Hernández-Fernández ◽

A.P. de los Ríos ◽

...

Keyword(s):

Ionic Liquid ◽

Ionic Liquids ◽

Transport Model ◽

Separation Processes ◽

Application Range ◽

Sodium Hydrogen Phosphate ◽

Selective Transport ◽

Mapping Analysis ◽

Before And After ◽

Diffusion Solution

In the last few years, the use of ionic liquid-based membranes has gained importance in a wide variety of separation processes due to the unique properties of ionic liquids. The aim of this work is to analyze the transport of nutrients through polymer inclusion membranes based on different concentrations of methyltrioctylammonium chloride, in order to broaden the application range of these kinds of membranes. Calcium chloride (CaCl2) and sodium hydrogen phosphate (Na2HPO4) nutrients were used at the concentration of 1 g·L−1 in the feeding phase. The evolution of the concentration in the receiving phase over time (168 h) was monitored and the experimental data fitted to a diffusion-solution transport model. The results show very low permeation values for CaCl2. By contrast, in the case of Na2HPO4 the permeation values were higher and increase as the amount of ionic liquid in the membrane also increases. The surface of the membranes was characterized before and after being used in the separation process by scanning electron microscopy coupled to energy dispersive X-Ray spectroscopy (SEM–EDX) and elemental mapping analysis. The SEM–EDX images show that the polymer inclusion membranes studied are stable to aqueous solution contacting phases and therefore, they might be used for the selective transport of nutrients in separation processes.

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