Efficiency of Zinc (II) Metal Ion Adsorption Using Fe3O4/Clay Composites from Bangka: Efficiency of Zinc (II) Metal Ion Adsorption Using Fe3O4/Clay Composites from Bangka. Stannum [Internet]. 2021 Apr. 30 [cited 2026 Apr. 10];3(1):23-9. Available from: https://www.journal.ubb.ac.id/index.php/stannum/article/view/2230