Liquid-Liquid Equilibria of Ternary Mixtures Containing n-Tetradecane plus gamma-Valerolactone plus Aldehyde [Butanal or Pentanal or (E)-2-Undecenal] at 298.15 K

Author(s)

Dantas, Carlos E. S. ; Ceriani, Roberta

• Document type: Journal article
• Source: JOURNAL OF CHEMICAL AND ENGINEERING DATA; v. 67, n. 2, p. 11-pg., 2022-01-19.

Abstract

gamma-Valerolactone (GVL) is a biomass-based chemical with appealing physicochemical properties for use as a solvent, but its actual development of extraction processes still requires an extensive mapping of the thermodynamic equilibrium involved and accurate models for simulation. In this sense, this work aimed at evaluating the liquid-liquid equilibrium of model systems, composed of n-tetradecane + GVL + aldehyde [butanal or pentanal, or (E)-2-undecenal] at 298.15 K, related to the extraction of oxygenated contaminants in a Fischer-Tropsch diesel process. Phase compositions in equilibrium were indirectly determined by means of density correlation along the solubility curve. Both short-chain aldehydes, butanal and pentanal, distributed preferably within the solvent phase, resulting in the partition ratio (K-i) within the range of 1.36-2.9 and selectivity higher than 33.1, which reveals the suitability for using GVL as the solvent. The binary interaction parameters of the NRTL and UNIQUAC models successfully correlated the experimental data, resulting in maximum root mean square deviations of 0.38 and 0.47%, respectively. (AU)

• FAPESP's process: 16/18253-0 - Phase equilibria in lipid and biofuel technologies
• Grantee: Roberta Ceriani
• Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
• FAPESP's process: 14/21252-0 - Equilibrium and production processes of biofuels and bioproducts
• Grantee: Antonio José de Almeida Meirelles
• Support Opportunities: Research Projects - Thematic Grants