Optimization of the transesterification process for production of biodiesel from Jatropha curcas L. oil.

A process for the production of the methyl ester from Jatropha curcas L. oil for use as biodiesel has been examined to yield the methyl ester as the main product and glycerine as a byproduct. A series of experiments were performed in the laboratory to determine the optimum conditions for the preparation of the biodiesel. The optimum conditions included use of a catalyst dissolved in methanol i.e 1.25% sodium hydroxide (NaOH), based on volume of Jatropha oil used, 25% methanol based on volume of Jatropha oil used, continuous agitation with little splashing until the reaction mixture (oil and methanol) becomes thoroughly mixed and the most sensitive reaction temperature for transesterification at 52.5°C. Under the above conditions the biodiesel recovery was 84.4% of fresh Jatropha oil and the reaction time was measured to be 4–5 minutes.