An environmentally kind process was developed for the production of biodiesel from Jatropha oil using a heterogeneous solid super base catalyst and calcium oxide. The results revealed that under the optimum conditions of catalyst calcina­tions, temperature of 900°C, reaction temperature of 70°C, reaction time of 2.5 h, catalyst dosage of 1.5%, and methanol/oil molar ratio of 9:1, the oil conversion was 93% [34]. Nazir [58] found that the yield of JCO FAME could reach up to 94.35% using the following reaction conditions: 79.33 min reaction time, 10.41:1 methanol:oil molar ratio, and 0.99% of CaO catalyst at reaction temperature 65°C.