The optimization of biodiesel yield is conducted both graphically
and numerically. The optimum conditions in this study meanparameters with respectively high and low limits to achieve the
highest biodiesel yield. Assisted by the software, the optimal values
of the parameters are a reaction temperature of 80 C, a catalyst
amount of 0.27 g/mL and a circulation velocity of 4.15 mL/
min. A biodiesel yield of 85.5% is achieved under the optimum conditions.
The biodiesel yield is tested under these predicted optimum
conditions, an error of 1.72% between predicted and
measured values of the optimum biodiesel yield shows a reasonable
accuracy. Thus, it can be concluded that the generated model
has sufficient accuracy to predict the biodiesel yield.