Activated Carbon from Sugarcane (Saccharum officinarum L.) Bagasse for Removal Ca2+ and Mg2+ Ion from Well Water. Stannum [Internet]. 2020 Oct. 31 [cited 2026 Jul. 25];2(2):57-6. Available from: https://www.journal.ubb.ac.id/index.php/stannum/article/view/1877