Title of article :
Experimental and Theoretical Study of Phase Equilibria in Aqueous Mixtures of Lactic Acid with Benzyl Alcohol and p-Xylene at Various Temperatures
Author/Authors :
ghanadzadeh gilani, h. Department of Chemical Engineering - University of Guilan , ghanadzadeh gilani, a Department of Chemistry - Faculty of science - University of Guilan , borji peydeh, f Department of Chemical Engineering - University of Guilan , seyed saadat, s.l Department of Chemistry - Faculty of science - University of Guilan , ahmadifar, s Department of Chemistry - Faculty of science - University of Guilan
Abstract :
Liquid-liquid equilibria for the (water + lactic acid + benzyl alcohol or p-xylene) ternary systems were investigated at atmospheric pressure and in the temperature range from 298.15-318.15 K. The studied systems exhibit two types of liquid-liquid equilibrium (LLE) behavior. The system consisting of benzyl alcohol displays type-1 LLE behavior, while a type-2 behavior is exhibited by the other system. The quality of the experimental tie line data was determined using the Othmer-Tobias and Hand equations. Distribution coefficients and separation factors were calculated over the biphasic region. The experimental tie line data were regressed using the UNIQUAC and NRTL models and the binary interaction parameters were obtained.
Keywords :
Liquid-liquid equilibrium , Lactic acid , Ternary mixture , UNIQUAC model , NRTL model
Journal title :
Physical Chemistry Research
