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Hidayati, S.D.A. and Damajanti, N. 2022. Reduction of Chemical Oxygen Demand (COD) and Total Suspended Solids (TSS) from Wastewater of Tapioca Plant Using Aluminium Sulfate and Poly Aluminium Chloride (PAC) as a Coagulant. Research in Chemical Engineering. 1, 1 (Mar. 2022), 14–21. DOI:https://doi.org/10.30595/rice.v1i1.5.