Selected physical properties of binary mixtures of crude glycerol and methanol at various temperatures

Crude glycerol, the main byproduct of biodiesel production, consists of excess methanol and other impurities and can be converted into other useful products through purification or conversion processes. In this work, dynamic viscosities, densities, excess molar volumes and refractive indexes for several mixtures of biodiesel crude glycerol and methanol with were determined at different temperatures. The physiochemical characteristics of crude glycerol in mixture form with methanol could be useful for the design of industrial equipment and purification or conversion process. The results demonstrated temperature dependent behaviors of all binary mixtures. The empirical correlations were obtained based on the experimental results.