Experimental and Theoretical Study of Phase Equilibria in Aqueous Mixtures of Lactic Acid with Benzyl Alcohol and p-Xylene at Various Temperatures

Document Type : Regular Article

Authors

Departent of chemistry, University of Guilan. Rasht, Iran

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.

Graphical Abstract

Experimental and Theoretical Study of Phase Equilibria in Aqueous Mixtures of Lactic Acid with Benzyl Alcohol and p-Xylene at Various Temperatures

Keywords

Main Subjects


Volume 4, Issue 3 - Serial Number 3
September 2016
Pages 489-505
  • Receive Date: 27 January 2016
  • Revise Date: 30 April 2016
  • Accept Date: 18 May 2016
  • First Publish Date: 01 September 2016