Response surface methodology (RSM) is a set of mathematical
and statistical techniques employed for designing experiments, creating correlations, evaluating the effects of several factors, and their
interaction effects for desirable responses. This method uses the
minimum required data that give the best reaction conditions for
a desired response[25,26].
The main target of the present study was to investigate the
esterification reaction of waste fish oil (WFO) using sulfonated
activated carbon under ultrasonic irradiation as a pretreatment
step for WFO biodiesel production. Also, the interactions between
the independent process variables on the esterification conversion were discussed. The best conditions were obtained using the
RSM method