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2026. 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. 3, 1 (Aug. 2026), 194–208. DOI:https://doi.org/10.70182/jca.v3i1.2129.