Removal of propionic acid from aqueous solutions by tributyl phosphate in a room-temperature ionic liquid using Box-Behnken design

Ayan E., BAYLAN GÜLSOY N., ÇEHRELİ S.

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, vol.119, pp.499-505, 2023 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 119
  • Publication Date: 2023
  • Doi Number: 10.1016/j.jiec.2022.11.073
  • Journal Name: JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Chemical Abstracts Core, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.499-505
  • Istanbul University Affiliated: No

Abstract

In this study, propionic acid removal from aqueous solutions by tributyl phosphate (TBP) in a room-temperature ionic liquid was investigated. A room-temperature ionic liquid, 1-hexyl-3-methylimidazolium bis(trifluormethylsulfonyl)imide [HMIM][Tf2N], was used as a diluent. TBP was uti-lized as a reactant. The relationship between the extraction efficiency and various process parameters like initial propionic acid concentration, initial TBP concentration in [HMIM][Tf2N], and water/organic phase ratio were analysed by using Box-Behnken design which is one of the response surface methodology (RSM). The optimum extraction conditions for the reactive extraction of propionic acid with [HMIM] [Tf2N] were detected as initial propionic acid concentration of 5.429 % (w/w), TBP concentration in [HMIM][Tf2N] of 2.854 mol.L-1 and phase ratio of 0.558.(c) 2022 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.