OPARA, I. J. .; NICHOLAS, E.-O. S. .; UMAMA, O. A. . Sustainable removal of chromium (III) from water using highly efficient magnetic biochar derived from Sawdust. American Journal of Chemistry, [S. l.], v. 11, n. 1, p. 1–12, 2026. DOI: 10.55284/ajc.v11i1.1837. Disponível em: http://onlinesciencepublishing.com/index.php/ajc/article/view/1837. Acesso em: 8 jun. 2026.