Large-scale biodiesel production from Moroccan used frying oil

It was important to develop a robust and simple procedures and to use the minimum amounts of chemicals (e.g. NaOH). The reaction was performed employing an optimized methanol/oil molar ratio of 6:1 and a reaction temperature equal to 90°C. A yield of 93.8% was achieved with low cost raw materials. The GC-MS, 1H NMR, 13C NMR, FT-IR and TGA/DTG analyses of the final product confirmed that in the chosen experimental conditions the biodiesel did not contain traces of glycerol. Its characteristics were found to be as good as those of the biodiesel obeying the European standards.