Tinjauan Ulang Produksi Biodiesel Berbahan Baku Limbah Minyak Zaitun Melalui Metode Esterifikasi Dan Transesterifikasi
DOI:
https://doi.org/10.36456/waktu.v22i02.9196Keywords:
Asam Lemak Bebas, Biodiesel, Imobilisasi Enzim, Indeks Keasaman, Saponifikasi, ZaitunAbstract
This work aims to analyze waste olive oil or olive pomace oil (OPO) used in producing biodiesel by applying esterification and transesterification reactions. Due to OPO's high acidity index (IK), the handling of biodiesel production uses an esterification reaction to reduce this index. This process also aims to prevent saponification reactions from occurring during the transesterification reaction. The appropriate esterification parameters were determined in a few minutes with the molar ratio of methanol: oil which was 8:1 with a yield of 0.75 mg KOH/g IK oil. Olive oil is a non-edible oil with low production costs, making it an essential source of biodiesel production. This material can be used as a cheap raw material for enzyme immobilization. Even though OPO is non-edible, this raw material has economic value for biodiesel production. Still, it must be used to conduct transesterification in oils high in free fatty acids. Therefore, as pretreatment, the amount of free fatty acids in OPO must be reduced by acid esterification. Thus OPO can undergo a transesterification process to become a biodiesel product.
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