Optimization Process of Biodiesel Production From Nyamplung Seed (Calophyllum inophyllum L) Using In Situ Process and Ultrasonic Assisted

Nyamplung seed (Calophyllum inophyllum) contain high oil between 40-73%, so it potential as a raw material in biodiesel production. It The objective of this research to optimization of biodiesel production by in situ process and assisted ultrasonic. Optimization process use central composite design methods. Variables were investigated temperature, catalyst concentration (methanol basis), and the weight ratio of methanol by weight nyamplung. The ultrasonic wave was produced by ultrasonic cleaner unit with frequency 40 KHz, degassing time 10 minutes and reaction time 60 minutes. The results of research obtained Optimum conversion of biodiesel production from nyamplung seed with assisted ultrasonic was 64.429%. The optimum condition are 1:5.9116, 2.556% and 46.2oC for ratio weight of nyamplung seed to Y=69.609-0.7586X+1.9051 X+ 3.2476 X- 2.08 XX- 3.665 XX-2.865 XX- 10.6085 X-6.224 X-6.747 X1 methanol, catalyst concentration and temperature respectively. Mathematic modeling for describe in this process like expressed