Pemanfaatan Abu Tulang Ayam sebagai Katalis Heterogen (CaO) dalam Proses Pembuatan Biodiesel dengan Menggunakan Pelarut Metanol dari CPO

Abstract

Biodiesel is generally made by transesterification using heterogeneous base catalyst. To simplify the separation, the heterogeneous catalyst is used, such as CaO. This catalyst was isolated from chicken bones made by softening chicken bones and do calcination process. Some other important variables other than the selection of the catalyst is the catalyst dosage, molar ratio of methanol to the CPO and the reaction temperature. The highest yield of biodiesel produced is 95.81% with the molar ratio of methanol to the CPO is 17: 1, the reaction temperature is 65 ° C and 7% catalyst (w.t) with reaction time for 7 hours and stirring speed at 500 rpm as a constant variable. The most influential variable is the temperature of the reaction that gives a significant yield difference of biodiesel produced. It’s been proven by the increasing temperature used will also significantly increase the yield of biodiesel.