Reactive Extraction of Propionic Acid Using Tributyl Phosphate in Imidazolium-Based Ionic Liquids: Optimization Study Using Response Surface Methodology

Nilay Baylan

doi:10.17776/csj.586822

EN

Reactive Extraction of Propionic Acid Using Tributyl Phosphate in Imidazolium-Based Ionic Liquids: Optimization Study Using Response Surface Methodology

Abstract

In this work, the reactive extraction of propionic acid from aqueous solutions using imidazolium-based ionic liquids was examined. Ionic liquids, 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([BMIM][Tf₂N]), and 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF₆]) were utilized as diluents. Tributyl phosphate (TBP) as an extractant in ionic liquids was used. D-optimal design based on the response surface methodology (RSM) has been exerted to specify the effect of different variables on the reactive extraction process. Initial propionic acid concentration (2-10% w/w), extractant (TBP) concentration (0-3.00 mol.L^-1) and temperature (25-45 ℃) were chosen as numerical variables, and type of ionic liquid was chosen as a categorical variable. Extraction efficiency, selected as a dependent variable, was calculated from the experimental data. In addition to, the model equation for the extraction efficiency was created. The optimum extraction conditions were obtained as the initial propionic acid concentration of approximately 5% (w/w), TBP concentration in ionic liquids of 3 mol.L^-1 and temperature of 45^○C. Under these conditions, the values of extraction efficiency were determined as 85.64% for [BMIM][PF₆], and 81.91% for [BMIM][Tf₂N]. This study has indicated that the systems of TBP in ionic liquids is an efficient and green reactive extraction method for the removal of propionic acid from the aqueous media.

Keywords

Propionic acid,Imidazolium-Based Ionic Liquids,Tributyl phosphate,Reactive extraction,Response surface methodology.

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Details

Primary Language

English

Subjects

-

Journal Section

Research Article

Authors

Nilay Baylan ^*
0000-0002-2910-495X
Türkiye

Publication Date

December 31, 2019

Submission Date

July 4, 2019

Acceptance Date

October 12, 2019

Published in Issue

Year 2019 Volume: 40 Number: 4

DOI

https://doi.org/10.17776/csj.586822

IZ

https://izlik.org/JA88MP58PR

Cite

RIS / Bibtex

APA

Baylan, N. (2019). Reactive Extraction of Propionic Acid Using Tributyl Phosphate in Imidazolium-Based Ionic Liquids: Optimization Study Using Response Surface Methodology. Cumhuriyet Science Journal, 40(4), 928-938. https://doi.org/10.17776/csj.586822