Many reactors or mixers have been developed to enhance the reaction rate and reduce these requirements. In this research, a comparison of two mixing technologies, conventional mechanical mixer and the static mixer, was carried out. The conversion efficiency and kinetics show that the static mixer has a better performance. The static mixer has the potential to deliver better rigorous mixing between the raw oil and methanol, to the point that it can make the dispersed droplets of methanol in the raw oil smaller and more uniform, which resulted in enhancement of the reaction with the possibility of shortening the reaction time associated with biodiesel production. (C) 2013 Elsevier B.V. All rights reserved.