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Abstract
This article describes the liquid-liquid equilibrium of the extraction process of ethanoic acid (C2H4O2) in aqueous phase using ethyl ethanoate as the solvent. The liquid-liquid extraction was modeled by the construction of a ternary phase diagram for the water/ethanoic acid/ethyl ethanoate system using the Origin software. The equilibrium data were experimentally obtained by titration at room temperature (298.15 K) and atmospheric pressure (101325 Pa) using four mixtures of water, ethanoic acid, and ethyl ethanoate. The determination of the composition of the extract and residue portions in the equilibrium of each mixture by of the tie-lines method allowed to examine the percentages of liquid-liquid extraction achieved. The distribution coefficients and separation factors calculated, made it possible an evaluation of the distribution and of the mutual solubility of the solute in the aqueous and organic phases. The results showed a good performance of ethyl ethanoate in the extraction of ethanoic acid for concentrations of solute until 16% of the feed.
References
García, N., Caballero, J. A., Economic and environmental assessment of alternatives to the extraction of acetic acid from water, Industrial & Engineering Chemistry Research 50 (2011) 10717-10729. https://doi.org/10.1021/ie201064x.
IJmker, H. M., Gramblicka, M., Kersten, S. R. A., van der Ham, A. G. J., Schuur, B., Acetic acid extraction from aqueous solutions using fatty acids, Separation and Purification Technology 125 (2014) 256-263. https://doi.org/10.1016/j.seppur.2014.01.050.
Pal, P., Nayak, J., Acetic acid production and purification: critical review towards process intensification, Separation & Purification Reviews 46 (1) (2017) 44-61. https://doi.org/10.1080/15422119.2016.1185017.
Li, H., Wan, L., Chu, G., Tan, W., Liu, B., Qin, Y., Feng, Y., Sun, D., Fang, Y., (Liquid + liquid) extraction of phenols from aqueous solutions with cineole, Journal of Chemical Thermodynamics 107 (2017) 95-103. https://doi.org/10.1016/j.jct.2016.12.018.
Wongsawaa, T., Hronec, M., Pancharoena, U., Phatanasri, S., Solubility and tie-line data for ternary aqueous mixtures of cyclopentanol with organic solvents at T = 298.2K: experiments and NRTL model, Fluid Phase Equilibria 379 (2014) 10-18. https://doi.org/10.1016/j.fluid.2014.07.011.
Xu, D., Zhang, L., Gao, J., Pratik, D., Zhao L., Cui, Z., Liquid-liquid equilibrium for ternary systems of ethyl acetate/isopropyl acetate + 2,2,3,3-tetrafluoro-1-propanol + water at 298.15, 318.15 K, Journal of Chemical Thermodynamics 106 (2017) 218-227. https://doi.org/10.1016/j.jct.2016.12.006.
Gilani, H. G., Gilani, A. G., Sangashekan, M., Tie-line data for the aqueous solutions of phenol with organic solvents at T = 298.2 K, Journal of Chemical Thermodynamics 58 (2013) 142-148. https://doi.org/10.1016/j.jct.2012.10.028.
Lee, K. Y., Model to describe the binodal curve on a type 1 ternary phase diagram, Journal of Environmental Engineering 136 (6) (2010) 650-657. https://doi.org/10.1061/(ASCE)EE.1943-7870.0000196.
Pontifícia Universidade Católica de Minas Gerais. Equilíbrio líquido-líquido para o sistema água/acetato de etila/ácido acético, PUC Minas, Belo Horizonte, 2017.
Treybal, R. E., Mass-transfer operations, McGrall Hill Book Company, New York, 3rd ed., 1980.
Yang, Z., Zhu, J., Wu, B., Chen, K., Ye, X., Liquid-Liquid Equilibrium of (Water + Pentane-2,4-dione + Ethyl Ethanoate) and (Water + Pentane-2,4-dione + Cyclohexane) at (298.15 and 313.15) K, Journal of Chemical & Engineering Data 55 (12) (2010) 5745-5750. https://doi.org/10.1021/je100704j.
Cella, R. F., Mumbach, G. D., Andrade, K. L., Oliveira, P., Marangoni, C., Bolzan, A., Bernard, S., Machado, R. A. F., Polystyrene recycling processes by dissolution in ethyl acetate, Journal of Applied Polymer Science 135 (18) (2018). https://doi.org/10.1002/APP.46208.
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