Equilibrium data and GC-PC SAFT predictions for furanic extraction

Eric Auger (1) , Christophe Coquelet (1) , Alain Valtz (1) , Mqondisi Nala (2, 1) , Paramespri Naidoo (2) , Deresh Ramjugernath (2)

1 CTP - Centre Thermodynamique des Procédés
2 Thermodynamics Research Unit

The present study concerns phase equilibria measurements involving oxygenated components (furan and furfural) and potential solvents of extraction (n-hexane, ethanol and n-octanol) using an ebulli-ometer at atmospheric pressure. New liquid-liquid equilibrium data concerning the ternary system furan þ furfural þ n-hexane are also presented. The experimental technique used for the liquid-liquid equilibrium measurements is based on the static analytic method. The two liquid phases are sampled using a syringe and analyzed using gas chromatograph. Two thermodynamic approaches are considered for the data treatment: the first considers a dissymmetric approach using the NRTL activity coefficient model, and the second considers a group contribution model based on the PC-SAFT EoS (GC-PPC SAFT). The experimentally measured data were successfully correlated with the models proposed.

Domaines: Chimie théorique et/ou physique

Eric Auger, Christophe Coquelet, Alain Valtz, Mqondisi Nala, Paramespri Naidoo, et al.. Equilibrium data and GC-PC SAFT predictions for furanic extraction. Fluid Phase Equilibria, 2016, 430, pp.57-66. ⟨10.1016/j.fluid.2016.09.019⟩. ⟨hal-01371510⟩