The aim of this study is to optimize the transesterification using potassium
hydroxide (KOH)-supported polyvinyl alcohol to ease the separation process
between glycerol and biodiesel. The design of experiment used was factorial
composite design (FCD) and the effects of the amount of catalyst
ranging from 0.5 wt% to 10 wt%, methanol to oil ratio from 6:1 to 18:1,
and reaction temperature from 55°C to 65°C were studied. Biodiesel yield of
89.9% was obtained at the reaction temperature of 65°C, methanol to oil
ratio of 18:1, and 0.7 wt% amount of catalyst
