“THE EFFECT OF MASS AND PH ON DECREASING CHEMIXAL OXYGENT DEMAND (COD) ON PALM OIL MILL EFFLUENT (POME) BY CACAO SHELL ADSORBENT”. 2025. Stannum : Jurnal Sains Dan Terapan Kimia 7 (2): 54-59. https://doi.org/10.33019/6c0wd245.