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All Journal Jurnal Sains Teknologi dan Lingkungan (JSTL) Sains Natural: Journal of Biology and Chemistry QARDHUL HASAN: MEDIA PENGABDIAN KEPADA MASYARAKAT Jurnal Kartika Kimia Makara Journal of Science Helium: Journal of Science and Applied Chemistry Jurnal Pengabdian Masyarakat Inovatif Jurnal Pengabdian Masyarakat Inovatif
Iryani, Ani
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Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Energy Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Public Health Social Sciences Other

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Purification of Used Cooking Oil with Avocado Seed Powder as Biosorbent Iryani, Ani; Hasanah, Retna; Kusumawardani, Linda Jati; Fathurrahman, Muhammad
Jurnal Kartika Kimia Vol 8 No 2 (2025): Jurnal Kartika Kimia
Publisher : Department of Chemistry, Faculty of Sciences and Informatics, University of Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jkk.v8i2.933

Abstract

Cooking oil is a basic ingredient in food preparation. Repeated use of cooking oil at high temperatures produces free fatty acids (FFA), which indicate oil degradation. The initial free fatty acid content of the used cooking oil in this study was 0.95%. This study aimed to prepare, activate, and evaluate avocado seed powder as a biosorbent for reducing free fatty acids in used cooking oil and to determine the optimal adsorption conditions with respect to temperature, contact time, and adsorbent mass. The activated avocado seed biosorbent showed a moisture content of 5.40%, ash content of 0.68%, iodine adsorption capacity of 768 mg/g, methylene blue adsorption capacity of 22.57 mg/g, and a surface area of 84.69 m²/g. The optimum adsorption condition was achieved at 90°C, 120 minutes contact time, and 20 g adsorbent mass. Under these conditions, the free fatty acid content decreased from 0.95% to 0.40%, corresponding to a reduction in efficiency of 58.05%. The peroxide value and water content were also reduced significantly. The adsorption capacity of avocado seed biosorbent was 27.96 mg/g for free fatty acids, 3.28 mg/g for peroxide value, and 6.16 mg/g for water content.
Co-Authors . Apriansyah Ariq, Muhammad Rizki Darussalam, Muhamad Virgi Farida Nuraeni Fathurrachman, Muhammad Hasanah, Retna Indah, Amalia Nurul Juniansyah, Ronaldo Linda Jati Kusumawardani Maharani, Khairy Yunda Muhammad Fathurrahman Nurlela Nurlela Prakoso, Muhamad Iqbal Pratiwi, Fany Dwi Purnama, Dicky Budhi Ramadhini, Dania Sinaga, Ennita Lusiana Sutanto Sutanto Sutanto Uswatun Hasanah Widdyanti, Tutik Yulian Syahputri Zulfa, Naura Devana