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 . 2024;22(2):60-68. doi:10.58533/s6prsw97