Adsorption of Mn(II) ions from wastewater using activated carbon obtained from Birbira (Militia ferruginea) leaves. Global Journal of Science Frontier Research, [S. l.], v. 12, n. B1, p. 5–12, 2012. Disponível em: https://www.journalofscience.org/index.php/GJSFR/article/view/100147. Acesso em: 6 feb. 2026.