Experiments and thermodynamic models for ternary liquid-liquid equilibrium systems of diethoxymethane+ethanol+water system at different temperatures

摘要

Abstract Liquid-liquid equilibrium (LLE) data for the diethoxymethane+ethanol+water ternary system has been studied at 298.2, 308.2 and 318.2K at 101.3kPa. The efficiency of water to extract ethanol from diethoxymethane was assessed by the distribution coefficients and separation factors. The reliability of the experimental LLE data was verified with the Othmer-Tobias and Hand equations. The thermodynamic NRTL and UNIQUAC models were successfully applied to correlate the experimental LLE data of the studied systems with all the RMSD% values were less 0.6 and the values for binary interaction parameters were obtained. Water was proven to be very promising in extracting ethanol from diethoxymethane solution. Highlights ? The LLE data for DEM+ethanol+water at different temperatures were measured. ? The distribution coefficient and selectivity were calculated. ? The reliability of LLE data were verified by the Othmer-Tobias and Hand equations. ? The NRTL and UNIQUAC models were applied to correlate the experimental LLE data. ? The binary interaction parameter values were obtained from the data correlation. ]]>