Thohir MB, Wijaya TEP. Characterization of Activated Charcoal Produced Using Green Chemistry Principle Approach Number 7. HJKK [Internet]. 2024 Jun. 28 [cited 2025 Aug. 18];12(3):440-52. Available from: https://e-journal3.undikma.ac.id/index.php/hydrogen/article/view/11834