Guntama, D. et al. 2023. Utilization of Active Charcoal of Arabica Coffee (Coffea arabica) With Chloride (HCl) and Phosphoric Acid (H3PO4) Activator as Adsorbent of Metal Chromium (Cr) in Textile Waste. Jurnal Migasian. 7, 1 (Jun. 2023), 1–11. DOI:https://doi.org/10.36601/jm.v7i1.226.