Zemriyetti, Syarifa Mayly, Refnizuida, Rosmaria Girsang, and Benny Hidayat. “Characterization Biochar Properties from Waste of Cassava, Sugarcane, and Coconut”. Journal of Environmental and Agricultural Studies 3, no. 1 (March 5, 2022): 37–41. Accessed December 1, 2025. https://al-kindipublishers.org/index.php/jeas/article/view/2941.