Characterization of Used Cooking Oil Biodiesel with Kelor-CaO Seed Catalyst Activated by Nitric Acid

Used cooking oil contains various chemical components due to heating or frying of various foods so that the dark color needs to be purified before the process of making biodiesel, one of which uses activated Moringa seed charcoal. The purpose of this study was to characterize biodiesel synthesized from waste cooking oil using activated carbon catalysts of Moringa seeds and or CaO activated by nitric acid whose results were compared with SNI-04-7182-2006 including density, viscosity, flash point, cetane number, cetane number, and heating value. The analytical methods used are conventional and modern namely gravimetry, titration, bomb calorimeter, and proximate