화학공학소재연구정보센터
Journal of Chemical and Engineering Data, Vol.39, No.1, 8-11, 1994
Liquid-Liquid Equilibria for Water Plus Ethanol Plus 2-Methylpropyl Ethanoate and Water Plus Ethanol Plus 1,2-Dibromoethane at 298.15 K
Liquid-liquid equilibrium, distribution coefficients, and selectivities of the systems water + ethanol + 2-methylpropyl ethanoate or + 1,2-dibromoethane have been determined at 298.15 K in order to evaluate their suitability in preferentially extracting ethanol from aqueous solution. Tie-line data were satisfactorily correlated by the Othmer and Tobias method, and the plait point coordinates for the two systems were estimated. The experimental data were compared with the values calculated by the NRTL and UNIQUAC models. The water + ethanol + 2-methylpropyl ethanoate system was also compared with the values predicted by the UNIFAC model. Poor qualitative agreement was obtained with these models. From the experimental results, we can conclude that both solvents are inappropriate for ethanol extraction processes from aqueous solutions.