SEMBIRING, Junita Br; SYLVIA, Diana; POHAN, Maya Sari Ananda. Development of a Peanut Shell-Derived Chitosan–Activated Carbon Composite as a Sustainable Adsorbent for Permanganate (MnO₄⁻) Removal from Aqueous Solution. Hydrogen: Jurnal Kependidikan Kimia, [S. l.], v. 14, n. 4, p. 751–761, 2026. DOI: 10.33394/hjkk.v14i4.21354. Disponível em: https://e-journal.undikma.ac.id/index.php/hydrogen/article/view/21354. Acesso em: 8 nov. 2026.