The Effect of Contact Time and Optimum pH on the Adsorption of Methylene Blue Dye by Alginate-Chitosan Complex Polyelectrolyte Films. Stannum [Internet]. 2023 Oct. 31 [cited 2026 Apr. 25];5(2):87-92. Available from: https://www.journal.ubb.ac.id/index.php/stannum/article/view/4371