Effect of Reaction Time on Production Biodiesel of Schleichera oleosa

The world's energy needs to be enhanced after the COVID-19 pandemic has caused a shortage of petroleum-based fuels that has occurred in almost all countries in the world. It is essential to use non-edible vegetable oil as a renewable energy source. This study aimed to produce Schleichera Oleosa oil as biodiesel using a homogeneous catalyst (KOH). This study uses the ester/transesterification method in which Schleichera oleosa oil (SO) is heated in a 1L double jacket reactor at 60 °C. The results showed that the optimum conditions were obtained at 0.75 vol% KOH and an agitation speed of 1000 rpm with a reaction time of 90 minutes. This condition resulted in a biodiesel yield of 89%. Furthermore, it was found that the high oxidation stability was 9.03 h, and the pour point was 9 °C. Thus, the physicochemical biodiesel produced is acceptable according to the ASTM 6751 standard.