Removal of Mn+2 and Fe+3 ions from waste water and underground water using Calcium Silicate (CS). Global Journal of Science Frontier Research, [S. l.], v. 12, n. B1, p. 51–57, 2012. Disponível em: https://www.journalofscience.org/index.php/GJSFR/article/view/100142. Acesso em: 6 feb. 2026.