Biodiesel chemistry

Biodiesel Chemistry
The conversion of triglycerides and free fatty acids in waste vegetable oil to biodiesel is typically accomplished by transesterification:



However, this proceeds very slowly and therefore is often proceeded using base or acid catalyzation. The base catalyzed transesterification proceeds as follows:


The acid catalyzed reaction proceeds as follows:

References
  1. Schuchardt et. al “Transesterfication of vegetable oils: a Review.” Journal of the Brazilian Chemical Society. vol 9 no. 3 May/June 1998