OPTIMIZATION ADSORPTION OF HEXAVALEN CHROMIUM (CR-VI) IN ACTIVATED CARBON (MICROWAVE-ASSISTED ZNCL2 CHEMICAL-ACTIVATION) USING TAGUCHI METHOD. Settings Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit [Internet]. 2024 Dec. 16 [cited 2025 Jun. 29];22(2):60-8. Available from: https://e-jurnal.atk.ac.id/index.php/bptkspk/article/view/19