Anifah, Eka, et al. “Adsorption of Iron and Manganese from Acid Mine Drainage by Zalacca (Salacca Zalacca) Peel- Activated Carbon ”. Sustinere: Journal of Environment and Sustainability, vol. 8, no. 1, May 2024, pp. 44-53, doi:10.22515/sustinere.jes.v8i1.366.