(Liquid plus liquid) equilibria of (water plus lactic acid plus alcohol) ternary systems


Sahin S., Kirbaslar S. I. , Bilgin M.

JOURNAL OF CHEMICAL THERMODYNAMICS, vol.41, no.1, pp.97-102, 2009 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 41 Issue: 1
  • Publication Date: 2009
  • Doi Number: 10.1016/j.jct.2008.07.014
  • Title of Journal : JOURNAL OF CHEMICAL THERMODYNAMICS
  • Page Numbers: pp.97-102

Abstract

(Liquid + liquid) equilibrium (LLE) measurements of the Solubility (binodal) curves and tie-line end compositions were carried out for [water (1) + lactic acid (2) + octanol, or nonanol, or decanol (3)] at T = 298.15 K and 101.3 +/- 0.7 kPa. The relative mutual solubility of lactic acid is higher in the water layers than in the organic layers. The reliability of the experimental tie-line data was confirmed by using the Othmer-Tobias correlation. The LLE results for the ternary systems were predicted by UNIFAC method. Distribution coefficients and separation factors were evaluated for the immiscibility region. (C) 2008 Elsevier Ltd. All rights reserved.