Extraction of Thevetia peruviana Seed Oil and Optimization of Biodiesel Production Using Alkali-catalyzed Methanolysis
Keywords:
Thevetia peruviana seeds, extraction, methanol, NaOH catalyst, biodiesel.Abstract
Crude Thevetia peruviana seed oil was used as a feedstock for biodiesel production using alkali-catalyzed methanolysis. Effect of various solvents and solvent combinations on the extraction of seed oil showed that chloroform is the best amongst all other solvent studied with 48% w/w oil yield. The optimized process conditions for Thevetia peruviana biodiesel production were an oil-to-methanol ratio of 1:6 w/w, catalyst concentration of 1.0% w/w of methanol under reflux condition for 2 h. The maximum biodiesel yield obtained was 83% under these conditions.Thevetia peruviana seed oil biodiesel produced was characterized for the properties such as the kinematic viscosity at 40ºC, density at 25ºC, flash point (FP), pour point (PP), cloud point (CP), acid value, total ester content, and copper stripe corrosion. Thevetia peruviana biodiesel produced met with the quality standards defined under ASTM D675-02. The results of present study indicate that Thevetia peruviana seed oil can be used as a potential alternative to produce biodiesel.
Keywords: Thevetia peruviana seeds, extraction, methanol, NaOH catalyst, biodiesel.
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