different parameters such as different base catalyst concentrations,
reaction times and temperatures were examined. Fig. 4a explains
about the effect of catalyst concentrations and reaction time on
biodiesel conversion. The other parameters such as temperature
at 50 C and methanol lipid ratio (11:1) were maintained constant
in the present study. As shown in Fig. 4a, when the catalyst concentration
was increased from 0.3% to 0.9%, an increase in biodiesel
conversion was observed.