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

Liquid-liquid equilibrium (LLE) data for the diethoxymethane + ethanol + water ternary system has been studied at 298.2, 308.2 and 318.2 K at 101.3 kPa. 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.