The Effect of Pre-Treatment Process on the Separation of Iron (Fe) and Manganese (Mn) Metals in Well Water in Lampoh DayaBanda Aceh City. International Journal of Energy & Environment, [S. l.], v. 1, n. 1, p. 228–235, 2026. Disponível em: https://e-journal.scholar-publishing.org/index.php/ijee/article/view/205. Acesso em: 4 feb. 2026.