“THE EFFECT OF MASS AND PH ON DECREASING CHEMIXAL OXYGENT DEMAND (COD) ON PALM OIL MILL EFFLUENT (POME) BY CACAO SHELL ADSORBENT”. Stannum : Jurnal Sains Dan Terapan Kimia, vol. 7, no. 2, Nov. 2025, pp. 54-59, https://doi.org/10.33019/6c0wd245.