After reviewing the literature, following comparison for process
conditions can be drawn out which are listed in Table 11.
The results showed that, under the same condition, UIMS and
PUI used less catalyst, less methanol, shorter time and less energy
consumption than MS and FPUI when the biodiesel conversion
was the same. At the same catalyst concentration, the sequence of
biodiesel conversion from high to low was PUI, UIMS, FPUI and
MS. As per the literature, effective stirring rate was around
100 rpm.