Junifa L. Sihombing, Ahmad N. Pulungan, Herlinawati Herlinawati, Agus Kembaren, Janter P. Simanjuntak, Lisna Efiyanti, Muhammad Hadi, Rahayu Rahayu, Ary A. Wibowo
The conversion of plastic waste to fuel is a viable approach to address challenges associated with LDPE waste while enhancing energy utilization in pyrolysis. Elevated olefin levels beyond set standards adversely affect exhaust emissions, underscoring the need for hydrogenation. This study comprises multiple phases, including catalyst formulation from natural zeolites, transition metal deposition, and hydrogenation of pyrolytic oil using these catalysts. Results indicate that the Nickel-based catalyst yields a significantly lower olefin yield of 6.1 % with Ni/SNZ and 5.76 % with NiMo/SNZ, complying with EN228 standards. In contrast, the CoMo/SNZ catalyst significantly increases carbon content to 87.25 %, demonstrating improved deoxygenation and achieving the highest HHV of 39.95 MJ/kg, reflecting enhanced liquid product quality for potential alternative fuel applications. © 2026 Egyptian Petroleum Research Institute (EPRI). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, Jl. Willem Iskandar Pasar V Medan Estate, Medan, 20221, Indonesia; Mechanical Engineering Department, Universitas Negeri Medan, North Sumatera, Medan, 20221, Indonesia; Research Center for Biomass and Bioproduct, National Research and Innovation Agency, Bogor, Indonesia; Department of Chemistry, Faculty of Science and Technology, Universitas Samudra, Langsa, 24416, Indonesia; School of Engineering, The Australian National University, North Road, Australian Capital Territory, Acton, 6201, Australia
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