Predicting critical properties, density and viscosity of fatty acids, triacylglycerols and methyl esters by group contribution methods

摘要

The knowledge of critical properties, densities and viscosities (in function of temperature) of the main fatty compounds involved in the biodiesel production are essential for process engineering. Even though several studies have reported properties for some compounds (mainly for fatty acids), there are still a necessity of expanding the databank gathered from literature. In contrast to traditional methods based on temperature-dependence correlations, in this work, methodologies for property prediction based on group contribution methods are presented.