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, [S. l.], v. 7, n. 2, p. 54–59, 2025. DOI: 10.33019/6c0wd245. Disponível em: https://journal.ubb.ac.id/index.php/stannum/article/view/3781. Acesso em: 7 nov. 2025.