Liquid–Liquid Equilibrium Measurement and Thermodynamic Modeling of the {<i>Sterculia striata</i> Biodiesel + Glycerol + Ethanol} System
João Correia Gomes Filho, Felipe Barbosa Bispo, Marcos L. Corazza, Pedro F. Arce, Fernando Augusto Pedersen Voll, Dayana de Gusmão Coêlho, Leandro Ferreira‐Pinto, Sandra Helena Vieira de Carvalho, João Inácio Soletti
Abstract
This paper reports experimental results and thermodynamic modeling of the liquid–liquid equilibrium (LLE) of the system chicha biodiesel (Sterculia striata) + glycerol + ethanol. Binodal curves and tie lines were obtained at different temperatures (303.15, 318.15, and 333.15 K) and atmospheric pressure (101.3 kPa). The quality of the experimental data was evaluated using the criteria of Marcilla and co-workers. The nonrandom two-liquid (NRTL) and analytical solutions of groups (ASOG) models were used to correlate the LLE data. Both models well fitted the experimental data with root-mean-square deviations (rmsd) not greater than 1.5%.