Kinetics of Transesterification of Waste Cooking Oil

Document Type : Research Note


Department of Mechanic Engineering, University of Mohaghegh Ardebili, Ardebil, I.R. IRAN


In this paper, transesterification of Waste Cooking Oil (WCO) with ethanol was investigated. Three stepwise and reversible reactions are believed to occur (conversion of triglycerides, diglycerides and monoglycerides). The effect of variations in mixing intensity (300 and 600rpm) and temperature (50, 60 and 70°C) on the rate of reaction were studied while the molar ratio of alcohol to triglycerol (6:1) and the concentration of catalyst (0.20 wt% based on WCO) were held constant. appeared up to 30 min of reaction time. The variations in mixing intensity appear to effect the reaction parallel to the variations in temperature. The experimental data appear to be a good fit into a first order kinetic mechanism. The reaction rate constants and the activa­tion energies were determined for all the forward and reverse reactions.


Main Subjects

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