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Fatama, K. , Akter, N., Saha, B. , Md., N. -E.-.A. and Chakma, S. 2024. Minimization The Chemical Oxygen Demand (COD) Content in Tannery Wastewater Using Activated Carbon from Spent Tea Leaves. Applied Environmental Research. 46, 3 (Aug. 2024). DOI:https://doi.org/10.35762/AER.2024036.