MAULINA, S.; HANDIKA, G. Characteristics of Activated Carbon from Oil Palm Fronds with the Addition of Sodium Carbonate (Na2CO3) and Sodium Chloride (NaCl) as an Activator. Simetrikal: Journal of Engineering and Technology, [S. l.], v. 1, n. 1, p. 30–35, 2019. DOI: 10.32734/jet.v1i1.685. Disponível em: https://talenta.usu.ac.id/jet/article/view/685. Acesso em: 26 aug. 2025.