Artículos de revistas
Phase equilibrium for the system rice bran oil plus fatty acids plus ethanol plus water plus gamma-oryzanol plus tocols
Registro en:
Fluid Phase Equilibria. Elsevier Science Bv, v. 216, n. 2, n. 271, n. 283, 2004.
0378-3812
WOS:000188973700008
10.1016/j.fluid.2003.11.008
Autor
Rodrigues, CEC
Pessoa, PA
Meirelles, AJA
Institución
Resumen
This work reports experimental equilibrium data for fatty systems containing rice bran oil, free fatty acids, ethanol, water, gamma-oryzanol and tocols, at 298.2 K. Model fatty systems composed by refined rice bran oil, commercial oleic acid, gamma-oryzanol, ethanol and water were used for adjusting NRTL and UNIQUAC interaction parameters between gamma-oryzanol and the other pseudocompounds. UNIQUAC interaction parameters between tocols and the other pseudocomponents were determined assuming that the tocols are present at infinite dilution in the liquid-liquid equilibrium system. Despite the complexity of the systems studied, the interaction parameters obtained were capable of correctly predicting the equilibrium for systems containing Brazilian and Thai crude rice bran oils and aqueous ethanol. (C) 2003 Elsevier B.V. All rights reserved. 216 2 271 283