Thohir, Muhammad Bakhru, and Terry Esi Putri Wijaya. “Characterization of Activated Charcoal Produced Using Green Chemistry Principle Approach Number 7”. Hydrogen: Jurnal Kependidikan Kimia, vol. 12, no. 3, June 2024, pp. 440-52, doi:10.33394/hjkk.v12i3.11834.