Water Treatment Process using Manganese Zeolite Filter, Activated Carbon Filter, and Silica Sand Filter. International Journal Of Technical Vocational And Engineering Technology, [S. l.], v. 3, n. 3, p. 1–7, 2023. Disponível em: https://journal.pktm.com.my/index.php/ijtvet/article/view/89. Acesso em: 3 apr. 2025.