Extraction of propionic acid by emulsion liquid membrane using trioctylamine in toluene

The extraction of carboxylic acids by emulsion liquid membranes has also attracted attention in biotechnology, due to the high selectivity for the desired product, high separation rate and lower costly. The emulsion type liquid membrane system consists of three phases (water/organic/water) in which the organic phase acts as a membrane between the aqueous internal phase and the aqueous external phase. The main parameters such as surfactant concentration, mixing speed, feed phase pH, carrier concentration, and feed phase concentration were investigated. In the optimum conditions, extraction efficiency was obtained 71% in 10 minutes using trioctylamine (5% w/w) as a carrier, Span 80 (4% w/w) as a surfactant, toluene (91% w/w) as a diluent, sodium carbonate (10% w/w) as a stripping solution, mixing speed 300 rpm and feed phase pH 2,5.

Keywords:

trioctylamine, propionic acid emulsion liquid membrane,

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[1] J.P.S.G. Crespo, M.J. Moura and M.J.T. Carrando, ‘‘Ultrafiltration membrane and cell recycle for continuous culture of Propionibacterium,’’ Journal of Membrane Science, vol. 61, pp. 303-314, 1991.
[2] A. Colomban, L. Roger and P. Boyaval, ‘‘Production of propionic acid from whey permeate by sequential fermentation, ultrafiltration and cell recycling,’’ Biotechnology and Bioengineering, vol. 42, pp. 1091-1098, 1993.
[3] L.R. Schlicher and M. Cheryan, ‘‘Reverse osmosis of lactic acid fermentation broth,’’ Journal of Chemical Technology and Biotechnology, vol. 49, pp. 129-140, 1990.
[4] B.R. Smith, R.D. MacBean and G.C. Cox, ‘‘Separation of lactic acid from lactose fermentation liquors by reverse osmosis,’’ Australian Journal of Dairy Technology, vol. 32, pp. 23-26, 1977.
[5] J.M.K. Timmer, H.C. Van der Horst and T. Robbertsen, ‘‘Transport of lactic acid through reverse osmosis and nanofiltration membranes, Journal of Membrane Science, vol. 85, pp. 205-216, 1993.
[6] M. Hongo, Y. Nomura and M. Iwahara, ‘‘Novel method of lactic acid production by electrodialysis fermentation,’’ Applied and Environmental Microbiology, vol. 52, pp. 314-319, 1986.
[7] A. Manzak and O. Tutkun, ‘‘Extraction of citric acid through an emulsion liquid membrane containing Aliquat 336 as carrier,” Separation Science and Technology, vol. 39, no. 10, pp. 2497–2512, 2004.
[8] L.-K. Ju and A. Verma, ‘‘Characteristics of lactic acid transport in supported liquid membranes,” Separation Science and Technology, vol. 29, pp. 2299-2315, 1994.
[9] R. Wodzki and J. Nowaczyk, ‘‘Propionic and acetic acid pertraction through a multimembrane hybrid system containing TOPO or TBP’’, Separation and Purification Technology, vol. 26, pp. 207-220, 2002.
[10] A.M. Eyal and E. Bressler, ‘‘Industrial separation of carboxylic and amino acids by liquid membranes: Applicability, process considerations, and potential advantage,” Biotechnology and Bioengineering, vol. 41, pp. 287-295, 1993.
[11] A. Keshav, K. L. Wasewar and S. Chand, “Extraction of propionic acid using different extractants (tri-n- butylphosphate, tri-n-octylamine and Aliquat 336)”, Industrial Engineering Chemistry Research, vol. 47, pp. 6192–6196, 2008a.
[12] A. Keshav, K. L. Wasewar and S. Chand, “Equilibrium studies for extraction of propionic acid using tri-n- butyl phosphate in different solvents”, Journal of Chemical Engineering Data, vol. 53, no. 7, pp. 1424–1430, 2008b.
[13] A. Keshav, K. L. Wasewar and S. Chand, “Equilibrium and kinetics of extraction of propionic acid using tri–n-octyl phosphineoxide”, Chemical Engineering Technology, vol. 31, no. 9, pp. 1290-1295, 2008c.
[14] A. Keshav, K. L. Wasewar and S. Chand, “Reactive extraction of propionic acid with tri-n-octylamine in different diluents”, Separation and Purification Technology, vol. 63, pp. 179-183, 2008d.
[15] A. Keshav, K. L. Wasewar and S. Chand, “Study of binary extractants and modifier –diluents systems for reactive extraction of propionic acid”, Fluid Phase Equilibria, vol. 275, pp. 21–26, 2008e. [16] A. Keshav, K. L. Wasewar and S. Chand, “Recovery of propionic acid by reactive extraction using tri-n- butyl phosphate in petroleum ether: equilibrium study”, Chemical Biochemical Engineering Quarterly, vol. 22, no. 4, pp. 433-437, 2008f.
[17] A. Keshav, K. L. Wasewar and S. Chand, “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 and Biotechnology, 2008g.
[18] A. Keshav, K. L. Wasewar and S. Chand, “Recovery of propionic acid from aqueous stream by reactive extraction: Effect of diluents”, Desalination, vol. 244, pp. 12-23, 2009a.