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Brazilian Journal of Chemical Engineering

versão impressa ISSN 0104-6632versão On-line ISSN 1678-4383

Resumo

INCE, E.  e  KIRBASLAR, S. Ismail. Liquid-Liquid equilibria of the water-acetic acid-butyl acetate system. Braz. J. Chem. Eng. [online]. 2002, vol.19, n.2, pp.243-254. ISSN 0104-6632.  http://dx.doi.org/10.1590/S0104-66322002000200004.

Experimental liquid-liquid equilibria of the water-acetic acid-butyl acetate system were studied at temperatures of 298.15± 0.20, 303.15± 0.20 and 308.15± 0.20 K. Complete phase diagrams were obtained by determining solubility and tie-line data. The reliability of the experimental tie-line data was ascertained by using the Othmer and Tobias correlation. The UNIFAC group contribution method was used to predict the observed ternary liquid-liquid equilibrium (LLE) data. It was found that UNIFAC group interaction parameters used for LLE did not provide a good prediction. Distribution coefficients and separation factors were evaluated for the immiscibility region.

Palavras-chave : acetic acid; butyl acetate; liquid-liquid; equilibria.

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