In conclusion it can be confirmed that the
biodiesel derived from the rubber seed oil is suited
for use in diesel engines given that its kinematic
viscosity, flash point, cloud point, and calorific value
conform to the recommended international standards.
This means that CaO can be effectively used as a
solid metal oxide catalyst in the trans-esterification
reaction of the rubber seed oil for biodiesel
production. By the usage of CaO catalyst savings
could be made from the expensive refining processes
admissible in the case of conventional acid/alkali
based trans-esterification reactions. More over rubber
seed oil can be converted into biodiesel directly by a
single stage trans-esterification process while most of
the non edible vegetable oils required two stage
trans-esterification reactions for the bio diesel
conversion. This is also an added advantage in this
process.