“Sugarcane Bagasse Biochar as a Solid Catalyst: From Literature Review of Heterogeneous Catalysts for Esterifications to the Experiments for Biodiesel Synthesis from Palm Oil Industry Waste Residue” (2023) Indonesian Journal of Science and Technology, 6(2), pp. 337–352. Available at: https://ejournal.kjpupi.id/index.php/ijost/article/view/71 (Accessed: 27 September 2025).