Hydrophobic 3-alkyl-1-methylimidazolium saccharinates as extractants for l-lactic acid recovery

Tonova, Konstantza; Svinyarov, Ivan; Bogdanov, Milen G.

doi:10.1016/j.seppur.2014.02.001

Cited by 50 publications

(20 citation statements)

References 48 publications

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“…vegetable oils (17)(18)(19)(20) have been used for organic phase formation. Moreover, novel extractants have recently been used instead of conventional extraction agents (21)(22)(23)(24). It has been shown that reactive extraction is applicable for separating carboxylic acids of similar structures from their mixed solutions (25).…”

Section: Introductionmentioning

confidence: 99%

Solvent modification effect on the physical and chemical extraction of acetic acid

Martı

2016

Separation Science and Technology

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Combined use of inert diluents with polar modifiers enables former to be utilized for the recovery of polar value-added chemicals. The results show that polarities of both solvent and modifier are critical for efficient separations. Thus, K D values with 1-octanol were higher than those with 1-decanol; while those with xylene were superior to those with hexane and toluene.Increasing amine concentrations increased the K D values, in contrast to the trends with pH and temperature. About 33%, 79% and 67% of acetic acid was recovered using 25% (v/v) Alamine 336 in xylene, 1-octanol and 30% 1-octanol-modified xylene, respectively.A c c e p t e d M a n u s c r i p t 2 Therefore, solvent modification positively affects the extraction power of inert diluents for acetic acid recovery.

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Section: Introductionmentioning

confidence: 99%

Solvent modification effect on the physical and chemical extraction of acetic acid

Martı

2016

Separation Science and Technology

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“…These salts were chosen in a way to ensure different pH values in the system, the latter allowing the influence of this factor on the glaucine partition to be assessed. On the other hand, the presence of different inorganic ions with distinct solvation properties in the system suggests that the glaucine partition can be manipulated since different types of interactions can be expected [34]. Furthermore, the salts' impact on the phase ratio and glaucine partition was evaluated by increasing their concentration until saturation is reached.…”

Section: Resultsmentioning

confidence: 99%

Ionic Liquid-Based Aqueous Biphasic Systems—A Facile Approach for Ionic Liquid Regeneration from Crude Plant Extracts

2015

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Abstract:The possibility for simultaneous controlled partition of the biologically active alkaloid S-(+)-glaucine, presented in a crude ionic liquid-aqueous plant extract, and separation of the ionic liquid (IL) employed by means of ionic liquid-based aqueous biphasic systems (IL-ABS) was investigated in this study. The ABS were formed by the addition of inorganic salts with distinct water-structuring properties such as Na2CO3, MgSO4, (NH4)2SO4, and NaH2PO4 to an enriched of glaucine extract of Glaucium flavum Cr. (Papaveraceae). The influence of the salt type and concentration on the phase-forming ability, as well as the pH value on the partition of glaucine between the two phases formed, was comprehensively studied. It was found that the target alkaloid is predominantly transferred into the IL-rich phase, regardless the influential factors. The results obtained were further used as a platform for the development of an improved extractive procedure, ensuring simultaneous glaucine recovery, IL recycling and water removal in a single technological step. Thus, based on the formation of a three-phase system consisting of butyl acetate, IL-rich phase, and salt-rich phase, nearly quantitative recovery of glaucine (>99%), IL recycling (ca. 90%), and water removal (ca. 85%) were achieved by salt-induced separation of the crude plant extract.

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“…The partition coefficient of a species between two immiscible liquid phases can be considered as an important physicochemical parameter from an engineering perspective, since it can be useful in the recovery of compounds by liquid-liquid extraction [23][24][25][26][27][28][29][30][31]. In our present study [32], we introduced an improved apparatus for continuous liquid-liquid extraction to be used as a tool for the purification of halide-based ionic liquids after the quaternization step.…”

Section: Introductionmentioning

confidence: 99%

Distribution of N-Methylimidazole in Ionic Liquids/Organic Solvents Systems

Bogdanov

Svinyarov

2017

Processes

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Abstract:The partition coefficients, K mim , of N-methylimidazole (mim) in two-component systems composed of ionic liquid (IL) and a series of organic solvents immiscible with ILs (butyl acetate, ethyl acetate, tert-butyl methyl ether, diethyl ether and cyclohexane) were determined by a shake-flask method. The influence of different factors such as temperature, solvent polarity, mim concentration, and water content on K mim by using 1-butyl-3-methylimidazolium chloride {[C 4 C 1 im]Cl} as a model compound was comprehensively studied. The calculated thermodynamic functions of transfer (∆ tr G 0 , ∆ tr H 0 , ∆ tr S 0 ) showed that the mim migration (IL→organic phase) is a thermodynamically unfavorable and enthalpy-determined process in the temperature range of 298.15 to 328.15K; however, the results suggested that mim partition toward the organic phase can be enhanced by the rational manipulation of the extraction conditions. Experiments conducted with other 1-alkyl-3-methylimidazolim chlorides (C n C 1 im]Cl (n = 6, 8, 10) revealed that mim possesses similar behavior and can be successfully washed out from the ILs by extraction with organic solvents. The results obtained in this study give some clues toward the choice of an appropriate solvent and conditions to be employed for the purification of halide-based ILs by means of a liquid-liquid extraction.

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Hydrophobic 3-alkyl-1-methylimidazolium saccharinates as extractants for l-lactic acid recovery

Cited by 50 publications

References 48 publications

Solvent modification effect on the physical and chemical extraction of acetic acid

Solvent modification effect on the physical and chemical extraction of acetic acid

Ionic Liquid-Based Aqueous Biphasic Systems—A Facile Approach for Ionic Liquid Regeneration from Crude Plant Extracts

Distribution of N-Methylimidazole in Ionic Liquids/Organic Solvents Systems

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