The Difference in Effectiveness of Arabica and Robusta Coffee Grounds as Adsorbent Raw Materials for Reducing COD and TSS Levels in Tapioca Wastewater. Jurnal Cakrawala Akademika, [S. l.], v. 3, n. 1, p. 194–208, 2026. DOI: 10.70182/jca.v3i1.2129. Disponível em: https://e-journal.lppmpustakacendekia.or.id/index.php/jca/article/view/2129. Acesso em: 29 oct. 2026.