Reactive extraction of propionic acid from aqueous solutions using trioctylamine in corn oil

Subject Areas :

gholam khayati ¹ (Associate Professor in Department of Chemical Engineering, University of Guilan, Rasht, Iran)
Alahyar Daghbandan ² (Assistant Professor in Department of Chemical Engineering, University of Guilan, Rasht, Iran)
Sedigheh Amirpour ³ (M.Sc. student in Chemical Engineering, Department of Chemical Engineering, University of Guilan, Rasht, Iran)

Received: 2019-08-22 Accepted : 2020-05-20 Published : 2020-08-22

Keywords: Propionic acid, Reactive extraction, Trioctylamine, Corn oil,

Abstract :

Propionic acid is widely used in chemical and allied industries and can be produced by biocultivation in a clean and environmentally friendly route. Recovery of the acid from the dilute stream from the bioreactor is an economic problem. Reactive extraction is a promising method of recovering the acid. In this paper, the trioctylamine (TOA) on the reactive extraction of Propionic acid from dilute aqueous solutions has been studied. In this series of experiments, Taguchi method was used as a powerful method to optimize the factors affecting extraction process. The optimum conditions for TOA concentration, propionic acid concentration, salt type, and temperature are 30 (%V/V), 0.25 (mol), KH2PO4 and 40 °C, respectively. The results showed that TOA concentration and salt type played a major role in increasing the efficiency of propionic acid reactive extraction. Also, thermodynamic parameters were calculated as a function of temperature for this system and the results showed that propionic acid extraction was controlled by entropy changes.

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