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Chemical and Biochemical Engineering Quarterly, Vol. 29 No. 3, 2015.

Original scientific paper

https://doi.org/10.15255/CABEQ.2014.2045

Stoichiometric and Spectroscopic Study of Reactive Extraction of Phenylacetic Acid with Tri-n-Butyl Phosphate

K. K. Athankar ; Advance Separation and Analytical Laboratory (ASAL), Chemical Engineering Department, Visvesvaraya National Institute of Technology (VNIT), Nagpur – 440010 (M.S) India
K. L. Wasewar ; Advance Separation and Analytical Laboratory (ASAL), Chemical Engineering Department, Visvesvaraya National Institute of Technology (VNIT), Nagpur – 440010 (M.S) India
M. N. Varma ; Advance Separation and Analytical Laboratory (ASAL), Chemical Engineering Department, Visvesvaraya National Institute of Technology (VNIT), Nagpur – 440010 (M.S) India
D. Z. Shende ; Advance Separation and Analytical Laboratory (ASAL), Chemical Engineering Department, Visvesvaraya National Institute of Technology (VNIT), Nagpur – 440010 (M.S) India
H. Uslu ; Engineering and Architecture Faculty, Beykent University, Department of Chemical Engineering Ayazagi Koyu, Istanbul Turkey

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Abstract

Phenylacetic acid is widely used in the pharmaceutical industry for production of antibiotics. The recovery of phenylacetic acid from dilute aqueous waste with tri-n-butyl phosphate in methyl isobutyl ketone and petroleum ether has been attempted, and the results are presented in terms of distribution coefficient, extraction efficiency, apparent equilibrium constant, and loading ratio. The mechanism of reactive extraction was analyzed and the stoichiometric ratio of phenylacetic acid to tri-n-butyl phosphate in methyl isobutyl ketone and petroleum ether was found to be 1:0.5 and 1:1.2. Mass action law
was used to represent the reactive extraction equilibrium for phenylacetic acid−tri-n-butyl phosphate−diluents which satisfied much in the present study. FTIR spectroscopy was studied for confirmation of the formation of a complex between acid and extractant.
Further relative basicity approach has been extended to represent the experimental results. The model is best suited to experimental results.

Keywords

reactive extraction; phenylacetic acid; tri-n-butyl phosphate; methyl isobutyl ketone; petroleum ether; relative basicity model

Hrčak ID:

147004

URI

https://hrcak.srce.hr/147004

Publication date:

14.10.2015.

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