Abstract
In this work, the liquid-liquid equilibrium data of the system water + 1-butanol + 2-butanol was studied at 303.15 and 313.15 K. In addition, the vapor-liquid and vapor-liquid-liquid equilibrium at 101.3 kPa was also determined experimentally. The effect of the temperature on the binary water + 2-butanol system and on the ternary system was analysed. Several correlations were tested using the experimental data. The viability of using LLE correlations to calculate LLE on the one side and VLE on the other side and the viability of using the VLE correlation to calculate VLE and LLE were studied using UNIQUAC and NRTL models. A comparison of these result with the UNIFAC predictive model was performed.
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