Investigations of biocompatible systems for reactive extraction of propionic acid using aminic extractants (TOA and Aliquat 336)

Recovery of propionic acid from different sources, like aqueous streams or from fermentation broth, is important in view of its wide usage in food, chemical and pharmaceutical industries. Reactive extraction is an emerging separation technique having numerous advantages like high selectivity and recovery. Effect of acid concentration, extractant concentration, pH, temperature and kinetics are the important steps in the reactive extraction. Equilibrium of propionic acid extraction using tri-n-butyl phosphate (TBP) and Aliquat 336 in n-hexanol respectively was carried out to find the better extractant out of the two for extraction of propionic acid. Aliquat 336 was found to be better than TBP with Ks = 2.2119 m3/kmol, thus indicating good complexation between it and the acid. The kinetics of extraction of the acid using Aliquat 336 in a stirred cell was investigated. The reaction was found to be first order in acid concentration and zero order in Aliquat 336 concentration. The reaction was found to be fast pseudo first order reaction occurring in the diffusion film and was found to be independent of hydrodynamics conditions. Rate constant was evaluated to be 163.398 1/s.

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Reactive extraction of propionic acid using tri-n-octylamine, tri-n-butyl phosphate and aliquat 336 in sunflower oil as diluent

Journal of Chemical Technology & Biotechnology ◽

10.1002/jctb.2066 ◽

2009 ◽

Vol 84 (4) ◽

pp. 484-489 ◽

Cited By ~ 26

Author(s):

Amit Keshav ◽

Kailas L. Wasewar ◽

Shri Chand

Keyword(s):

Propionic Acid ◽

Sunflower Oil ◽

Reactive Extraction ◽

Aliquat 336

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Recovery of propionic acid from aqueous phase by reactive extraction using quarternary amine (Aliquat 336) in various diluents

Chemical Engineering Journal ◽

10.1016/j.cej.2009.03.037 ◽

2009 ◽

Vol 152 (1) ◽

pp. 95-102 ◽

Cited By ~ 40

Author(s):

Amit Keshav ◽

Shri Chand ◽

Kailas L. Wasewar

Keyword(s):

Propionic Acid ◽

Aqueous Phase ◽

Reactive Extraction ◽

Aliquat 336

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Assessment of the Efficiency of Aliquat 336+Rice Bran Oil for Separation of Acrylic Acid from Aqueous Solution Using Reactive Extraction

International Journal of Chemical Reactor Engineering ◽

10.1515/ijcre-2017-0214 ◽

2018 ◽

Vol 16 (9) ◽

Cited By ~ 1

Author(s):

Himangshu Mondal ◽

Kanti Kumar Athankar ◽

Kailas L. Wasewar

Keyword(s):

Acrylic Acid ◽

Rice Bran ◽

Renewable Resources ◽

Extraction Efficiency ◽

Process Development ◽

Rice Bran Oil ◽

Reactive Extraction ◽

Aliquat 336 ◽

Proposed Model ◽

Predicted Values

Abstract Biomass is an attractive target in process development for the emerging renewable resources based bio-refinery industry. Due to the ample range of application of acrylic acid, its production through bio-route received more awareness in scientific fraternity. In this view, an attempted was made to study the reactive extraction of acrylic acid with aliquat 336 in rice bran oil. Moreover, Box-Behnken matrix was employed to corroborate the effects of process variables viz. concentration of acrylic acid [CAA]aq, concentration of aliquat 336 [CR4N+Cl], and temperature on the extraction efficiency (η%). In physical extraction, average extraction efficiency was found in the order as: 43.55 > 35.36 > 29.14 at 303 K, 323 K, and 343 K respectively in rice bran oil. The correlation coefficient, R2 = 0.988 % indicates the appropriateness of proposed model to predict the extraction efficiency in terms of independent variables, and the predicted values were found in close agreement with that of experimental results. Further, R2(Pred) = 0.806 is in reasonable agreement with the R2(Adj) = 0.972. The optimum conditions for extraction of acrylic acid using aliquat 336 as an extractant in rice bran oil are [CAA]aq = 0.0.5 (mol/kg); [CR4N+Cl] = 1.98 (mol/kg); temperature = 323 K and the model predicted extraction efficiency 77.5 % was found to be an excellent fit with the experimental value 75 %. Further, number of theoretical stages was found to be 3 and S/F ratio 0.247.

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