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Partitioning of L-Tryptophan in Aqueous Biphasic Systems Containing an Alkylimidazolium Ionic Liquid and a Phosphate Salt. / Korchak, Petr A. ; Safonova, Evgenia A. ; Victorov, Alexey I. .

в: Industrial and Engineering Chemistry research, Том 60, № 44, 10.11.2021, стр. 16078–16088.

Результаты исследований: Научные публикации в периодических изданияхстатьяРецензирование

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@article{e6aa043197db4fd196afcae3515a4678,
title = "Partitioning of L-Tryptophan in Aqueous Biphasic Systems Containing an Alkylimidazolium Ionic Liquid and a Phosphate Salt",
abstract = " For the development of novel liquid extraction systems, systematic experimental data and methods of predicting liquid−liquid equilibria are required. In this work, we report experimental data for a family of aqueous biphasic systems (ABSs) containing 1-butyl-3-methylimidazolium bromide/chloride, 1hexyl-3-methylimidazolium bromide/chloride, and 1-methyl-3octylimidazolium bromide/chloride in the presence of an inorganic salt (K2HPO4 or K3PO4) and assess the predictive capabilities of the ePC-SAFT equation of state in its classical form. The experimental binodal data for eight ABSs have been obtained in a broad concentration range. Although the ePC-SAFT gives a good description of the properties of binary systems, the deviations between experimental and predicted tie lines for the ternary ABSs are significant and the predictions are not quantitative. Improvement in the electrostatic term of the model is required for better performance. We systematically study the partitioning of L-tryptophan, taken as a model solute, and discuss the effect of the alkyl chain length of the imidazolium cation [Cnmim]+ and the specificeffect of the anion of ionic liquids (ILs) (chloride versus bromide). We show that the alkyl chain length of [Cnmim]+ has almost no effect on the partition coefficients of L-tryptophan (KTrp) in the ABSs with K3PO4, while lower KTrp values are found for ILs with the [C4mim]+ cation for the ABSs with K2HPO4. A substantial specificeffect of the anion of ILs is only observed when the salting-out effect of the inorganic salt is most pronounced, i.e., in the case of the ABSs with K3PO4. It should be specially mentioned that KTrp values are higher for the ABSs studied in this work in comparison with the available literature data for other IL−salt−water ABSs. This fact implies that the investigated ABSs have high potential for the extraction of biocomponents.",
keywords = "1-BUTYL-3-METHYLIMIDAZOLIUM BROMIDE, 2-PHASE SYSTEMS, ASSOCIATING FLUID THEORY, DNP-AMINO ACIDS, EQUILIBRIA, EXTRACTION, POLYETHYLENE-GLYCOL, POTASSIUM, VAPOR, WATER",
author = "Korchak, {Petr A.} and Safonova, {Evgenia A.} and Victorov, {Alexey I.}",
note = "Publisher Copyright: {\textcopyright} 2021 American Chemical Society",
year = "2021",
month = nov,
day = "10",
doi = "10.1021/acs.iecr.1c02178",
language = "English",
volume = "60",
pages = "16078–16088",
journal = "Industrial and Engineering Chemistry Process Design and Development",
issn = "0888-5885",
publisher = "American Chemical Society",
number = "44",

}

RIS

TY - JOUR

T1 - Partitioning of L-Tryptophan in Aqueous Biphasic Systems Containing an Alkylimidazolium Ionic Liquid and a Phosphate Salt

AU - Korchak, Petr A.

AU - Safonova, Evgenia A.

AU - Victorov, Alexey I.

N1 - Publisher Copyright: © 2021 American Chemical Society

PY - 2021/11/10

Y1 - 2021/11/10

N2 - For the development of novel liquid extraction systems, systematic experimental data and methods of predicting liquid−liquid equilibria are required. In this work, we report experimental data for a family of aqueous biphasic systems (ABSs) containing 1-butyl-3-methylimidazolium bromide/chloride, 1hexyl-3-methylimidazolium bromide/chloride, and 1-methyl-3octylimidazolium bromide/chloride in the presence of an inorganic salt (K2HPO4 or K3PO4) and assess the predictive capabilities of the ePC-SAFT equation of state in its classical form. The experimental binodal data for eight ABSs have been obtained in a broad concentration range. Although the ePC-SAFT gives a good description of the properties of binary systems, the deviations between experimental and predicted tie lines for the ternary ABSs are significant and the predictions are not quantitative. Improvement in the electrostatic term of the model is required for better performance. We systematically study the partitioning of L-tryptophan, taken as a model solute, and discuss the effect of the alkyl chain length of the imidazolium cation [Cnmim]+ and the specificeffect of the anion of ionic liquids (ILs) (chloride versus bromide). We show that the alkyl chain length of [Cnmim]+ has almost no effect on the partition coefficients of L-tryptophan (KTrp) in the ABSs with K3PO4, while lower KTrp values are found for ILs with the [C4mim]+ cation for the ABSs with K2HPO4. A substantial specificeffect of the anion of ILs is only observed when the salting-out effect of the inorganic salt is most pronounced, i.e., in the case of the ABSs with K3PO4. It should be specially mentioned that KTrp values are higher for the ABSs studied in this work in comparison with the available literature data for other IL−salt−water ABSs. This fact implies that the investigated ABSs have high potential for the extraction of biocomponents.

AB - For the development of novel liquid extraction systems, systematic experimental data and methods of predicting liquid−liquid equilibria are required. In this work, we report experimental data for a family of aqueous biphasic systems (ABSs) containing 1-butyl-3-methylimidazolium bromide/chloride, 1hexyl-3-methylimidazolium bromide/chloride, and 1-methyl-3octylimidazolium bromide/chloride in the presence of an inorganic salt (K2HPO4 or K3PO4) and assess the predictive capabilities of the ePC-SAFT equation of state in its classical form. The experimental binodal data for eight ABSs have been obtained in a broad concentration range. Although the ePC-SAFT gives a good description of the properties of binary systems, the deviations between experimental and predicted tie lines for the ternary ABSs are significant and the predictions are not quantitative. Improvement in the electrostatic term of the model is required for better performance. We systematically study the partitioning of L-tryptophan, taken as a model solute, and discuss the effect of the alkyl chain length of the imidazolium cation [Cnmim]+ and the specificeffect of the anion of ionic liquids (ILs) (chloride versus bromide). We show that the alkyl chain length of [Cnmim]+ has almost no effect on the partition coefficients of L-tryptophan (KTrp) in the ABSs with K3PO4, while lower KTrp values are found for ILs with the [C4mim]+ cation for the ABSs with K2HPO4. A substantial specificeffect of the anion of ILs is only observed when the salting-out effect of the inorganic salt is most pronounced, i.e., in the case of the ABSs with K3PO4. It should be specially mentioned that KTrp values are higher for the ABSs studied in this work in comparison with the available literature data for other IL−salt−water ABSs. This fact implies that the investigated ABSs have high potential for the extraction of biocomponents.

KW - 1-BUTYL-3-METHYLIMIDAZOLIUM BROMIDE

KW - 2-PHASE SYSTEMS

KW - ASSOCIATING FLUID THEORY

KW - DNP-AMINO ACIDS

KW - EQUILIBRIA

KW - EXTRACTION

KW - POLYETHYLENE-GLYCOL

KW - POTASSIUM

KW - VAPOR

KW - WATER

UR - http://www.scopus.com/inward/record.url?scp=85118714043&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/44af1aaf-4391-364a-972b-a4821ec51c10/

U2 - 10.1021/acs.iecr.1c02178

DO - 10.1021/acs.iecr.1c02178

M3 - Article

VL - 60

SP - 16078

EP - 16088

JO - Industrial and Engineering Chemistry Process Design and Development

JF - Industrial and Engineering Chemistry Process Design and Development

SN - 0888-5885

IS - 44

ER -

ID: 87734005