ie5b04588_si_001.pdf (277.05 kB)
Experimental Study and Modeling of Phase Equilibrium of the Methanol–Tripalmitin System: Application to Palm Oil Transesterification with Supercritical Methanol
journal contribution
posted on 2016-03-28, 00:00 authored by Winatta Sakdasri, Ruengwit Sawangkeaw, Yaocihuatl Medina-Gonzalez, Séverine Camy, Jean-Stéphane Condoret, Somkiat NgamprasertsithThe phase behavior
of the methanol–palm oil system was first
experimentally assessed in the temperature range of 363–393
K and pressure range of 1–4 MPa. Second, comparative modeling
of the phase equilibrium of the methanol–tripalmitin system
was performed using the Peng–Robinson equation of state (PR
EoS) with second-order modified Huron–Vidal (MHV2) mixing rules,
in combination with the universal functional activity coefficient
model (UNIFAC) and the universal quasi-chemical (UNIQUAC) excess Gibbs
free-energy model. The agreement between experimental and modeling
results was found to be satisfactory when MHV2 mixing rules are used
in combination with the UNIQUAC model. Finally, the thermodynamic
model was applied to predict fluid phase equilibria of palm oil transesterification
with supercritical methanol. From the isochoric method in the temperature
range of 373–693 K and the pressure range of 1–16 MPa,
the model was found to predict global mixture behavior.