Rusnam, Rusnam, Nika Rahma Yanti, Aninda Tifani Puari, and Nurmala Sari. “Application of Agro-Industrial Solid Waste As Biochar for Iron (II) Removal from Aqueous Solution”. Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) 13, no. 1 (February 2, 2024): 155–164. Accessed November 26, 2025. https://jurnal.fp.unila.ac.id/index.php/JTP/article/view/7802.