Aqueous biphasic system formation using 1-alkyl-3-ethylimidazolium bromide ionic liquids as new extractants

DimitrijeviL·, Aleksandra; Zec, Nebojša; Zdolšek, Nikola; DožiL·, Sanja; Tot, Aleksandar; GadžuriL·, Slobodan; TrtiL·-PetroviL·, Tatjana

doi:10.1016/j.jiec.2016.06.017

Cited by 23 publications

(16 citation statements)

References 32 publications

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“…As previously observed in group 1, the increase in TLL occurs with the increase in difference between the phase compositions. The parallelism between the tie-lines was also noticed, which indicates that the choice of the system’s global composition did not significantly impact the slope of the tie-line. , …”

Section: Resultsmentioning

confidence: 90%

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Liquid–Liquid Equilibrium Data of Water + Butanol/Acetone + 2-Hydroxyethylammonium-Based Protic Ionic Liquids

et al. 2022

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Environmentally friendly alternatives have been recently developed focusing on the search for less aggressive, more innovative, and sustainable chemical processes and products. Regarding this, two green options�biobutanol, as the next generation of renewable fuel better than ethanol, and protic ionic liquids (PILs), a class of ionic liquids (ILs), as green design solvents with easier recovery and purification processes�are attracting widespread interest. Looking forward to a more economically feasible and sustainable process, this study mainly investigated biorefinery byproduct-based PILs (acetate and butyrate anions) for n-butanol recovery. For that, liquid−liquid equilibrium (LLE) data of ternary systems composed of water + butanol/acetone + PIL using the cloudpoint titration method were determined at different temperatures (293.15 and 323.15 K), and the data were fitted to the nonrandom-two-liquid (NRTL) model to obtain the model binary interaction parameters, yielding RMSD below 1.91%. The PILs studied were 2hydroxyethylammonium acetate (HEAA), bis(2-hydroxyethyl)ammonium acetate (BHEAA), tris(2-hydroxyethyl)ammonium acetate (THEAA), 2-hydroxyethylammonium butyrate (HEAB), bis(2-hydroxyethyl)ammonium butyrate (BHEAB), and tris(2hydroxyethyl)ammonium butyrate (THEAB).

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Section: Resultsmentioning

confidence: 90%

“…Regarding the TLL, the bigger the difference between phase compositions, the higher is its value. Furthermore, all tie-lines showed a parallel behavior between themselves, and therefore, the global composition choice for the system had an insignificant effect on the slope of the tie-line. , …”

Section: Resultsmentioning

confidence: 91%

Liquid–Liquid Equilibrium Data of Water + Butanol/Acetone + 2-Hydroxyethylammonium-Based Protic Ionic Liquids

et al. 2022

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“…This kind of distribution can create electrostatic interactions, which are sometimes more favourable than the hydrogen bonds between water molecules and the same functional groups of reactive dyes. Finally, the structure of new ILs does not feature halogen atoms, which is becoming more common in most ILs . The three ILs synthesised to extract dyes were obtained with the following yields: DTMA (76%), DTXMA (84%) and EDTATMA (72%).…”

Section: Resultsmentioning

confidence: 99%

“…Finally, the structure of new ILs does not feature halogen atoms, which is becoming more common in most ILs. 43 The three ILs synthesised to extract dyes were obtained with the following yields: DTMA (76%), DTXMA (84%) and EDTATMA (72%). The structures of the ILs are shown in Figure 1.…”

Section: Ilsmentioning

confidence: 99%

Extraction of reactive dyes from aqueous solutions by halogen‐free ionic liquids

Castillo-Cervantes

Lijanova

Likhanova

et al. 2019

Coloration Technology

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Dyes are commonly used in various industries and unfortunately many of them are discharged into water bodies, causing environmental problems. In the current study, three hydrophobic, halogen‐free ionic liquids were synthesised and their capability as extracting agents was evaluated using four reactive dyes (CI Reactive Blue 4, CI Reactive Black 5, CI Reactive Orange 16 and CI Reactive Red 2). The ionic liquids, immiscible with the aqueous phase, could extract the reactive dyes from aqueous solutions, withdrawing the same amount of weight. The effects of pH and temperature on the extraction process were also studied. Trioctylmethyl ammonium ethylenediaminetetraacetate displayed a high extraction efficiency (99%), where only 33 mg of ionic liquids extracted 50 mg of CI Reactive Blue 4. Fourier Transform–infrared spectroscopy was used to screen the interaction between the ionic liquid and CI Reactive Blue 4 during the extraction stage.

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“…This information is useful in ionic liquidliquid chromatography and demonstrates how the design of an ionic liquid affects the distribution ratios of solutes. A number of reviews [115,[130][131][132][133] and further information on the liquid-liquid equilibria of ionic liquids have been published elsewhere.…”

Section: Ionic Liquid-organic Solventmentioning

confidence: 99%

Ionic Liquid–Liquid Chromatography: A New General Purpose Separation Methodology

Brown¹,

Earle

Gîlea

et al. 2017

Topics in Current Chemistry Collections

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Ionic liquids can form biphasic solvent systems with many organic solvents and water, and these solvent systems can be used in liquid-liquid separations and countercurrent chromatography. The wide range of ionic liquids that can by synthesised, with specifically tailored properties, represents a new philosophy for the separation of organic, inorganic and bio-based materials. A customised countercurrent chromatograph has been designed and constructed specifically to allow the more viscous character of ionic liquid-based solvent systems to be used in a wide variety of separations (including transition metal salts, arenes, alkenes, alkanes, bio-oils and sugars).

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Aqueous biphasic system formation using 1-alkyl-3-ethylimidazolium bromide ionic liquids as new extractants

Cited by 23 publications

References 32 publications

Liquid–Liquid Equilibrium Data of Water + Butanol/Acetone + 2-Hydroxyethylammonium-Based Protic Ionic Liquids

Liquid–Liquid Equilibrium Data of Water + Butanol/Acetone + 2-Hydroxyethylammonium-Based Protic Ionic Liquids

Extraction of reactive dyes from aqueous solutions by halogen‐free ionic liquids

Ionic Liquid–Liquid Chromatography: A New General Purpose Separation Methodology

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