Thutug Rahardiant Primadi, Fauziatul Fajaroh, Aman Santoso, Olvi Dyah Fernanda
Until now there are has not been any concrete utilization of used cooking oil (jelantah). This research seeks to convert this cooking oil waste into biodiesel. According the actual that cooking oil still contains free fatty acids can be converted into methyl esters through transesterification reaction. This effort is in line with the increasing requirement for renewable energy sources. But to achieve maximum reaction results of transesterification without using a catalyst, need supercritical conditions. Even more cooking oil waste is a low quality oil with high levels of free fatty acids and high rancidity. Therefore it is necessary to think about optimum process conditions and needed superior catalysts in the transesterification process. One catalyst that thought to be superior is CaO/CoFe2O4. Eggshell solid waste can be used as a natural source of CaO, through high temperature heating (calcination). The purpose of this study is produces biodiesel from waste cooking oil using CaO/CoFe2O4 from eggshells catalyst. This research objectives were achieved through the following main steps: (1) Synthesis of activation zeolite for rafination process; (2) Pre-Treatment of cooking oil waste; (3) Trans-esterification reaction from cooking oil waste using CaO/CoFe2O4 eggshells waste; (4) Optimization of trans-esterification reaction; (5) characterization of methyl esters produced and see their potential as biodiesel. Based on the results of FTIR, yield analysis, GC-MS, the result product is methyl ester and its potency to be biodiesel. The catalyst application in the transesterification reaction made from used cooking oil is expected to provide a conversion is about 80%. © 2021 Author(s).
Chemistry Departement, FMIPA, Universitas Negeri Malang, Indonesia
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