Susila Kristianingrum, Annisa Fillael, Sulistyani, Rachfika Windy, Irfan Azhar
Bagasse is a remained material of sugarcane extraction. It contains 24.7 wt% of carbon and is potentially as the source of C element for activated carbon synthesis. This study aims to determine the characteristics of activated carbon produced from bagasse, the effect of mass variation of activated carbon and contact time used to reduce levels of peroxide and free fatty acids in used cooking oil, and the effect of activated carbon adsorbent bagasse on fatty acid content in used cooking oil. Bagasse adsorbent was chemically activated using HCl solution. The determination of the peroxide number was carried out by the iodometric titration method and the determination of the free fatty acid content was carried out by the acid-alkalimetric titration method. The results showed that the bagasse adsorbent after activation met the requirements of SNI 06-3730-1995, obtained 1.8% moisture content, 6.8% ash content, 21.42% volatile content, and 69.98% bound carbon content. The most effective reduction in the levels of peroxide and free fatty acids was obtained in the mass variation of activated charcoal 0.5 grams and a contact time of 60 minutes, with a peroxide value of 9.88 - 10.6 meq / kg and a free fatty acid content of 0.38% and 0.29% respectively. The levels of peroxide numbers after adsorption with optimum conditions have met the requirements of SNI 01-3741-2013. © 2023 Author(s).
Department of Chemistry Education, Faculty of Mathematics and Natural Sciences, Universitas Negeri Yogyakarta, Colombo Street, Sleman, Yogyakarta, 55281, Indonesia
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