Aminah, Siti, Ferawanda Ferawanda, Tri Santoso, and Afadil Afadil. 2025. “Utilization of Activated Charcoal from Cocoa Peel (Theobrema Cacao L.) As Lead Adsorbent in Used Oil”. Media Eksakta 19 (2):102-9. https://doi.org/10.22487/me.v19i2.982.