Galadima, Ahmad, Mubarak Abubakar, Aminu Muhammad Lawal, and Rilwanu Muhammad. “Exploring the Prospects of Different Activated Charcoal Systems As Low-Cost Materials for Upgrading Groundnut Oil into Biodiesel”. International Journal of Science for Global Sustainability 10, no. 1 (March 31, 2024): 1–6. Accessed April 21, 2026. http://www.fugus-ijsgs.com.ng/index.php/ijsgs/article/view/584.