Adsorption Of Fe2+ In Groundwater By Fly Ash Coal Adsorbent East Kalimantan. JTT (Jurnal Teknologi Terpadu), [S. l.], v. 2, n. 1, 2014. DOI: 10.32487/jtt.v2i1.39. Disponível em: https://jurnal.poltekba.ac.id/index.php/jtt/article/view/39. Acesso em: 16 jun. 2026.