OPTIMIZATION OF CONDITION FOR METHYLEN BLUE ADSORPTION USING ACTIVATED COMMERCIAL ZEOLITE. Settings Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit [Internet]. 2024 Dec. 16 [cited 2025 Sep. 1];23(1):173-9. Available from: http://e-jurnal.atk.ac.id/new-jurnal/index.php/bptkspk/article/view/41