Hasnelly, Yasin S, Agustian, Darmawan. Study of Palm Shell Biochar Capability in Absorbing Metals on Landfill Leachate. Psychosocial rehabilitation [Internet]. 2020 Aug. 31 [cited 2025 Dec. 18];24(6):13231-9. Available from: https://psychosocial.com/index.php/ijpr/article/view/8210