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Herlinawati, H., Sihombing, J. L., Kembaren, A., Simatupang, L., & Adhani, R. (2023). Analysis of Fe metal adsorption in industrial wastewater using adsorbents from betel nut skin. Jurnal Pendidikan Kimia, 15(1), 35–40. https://doi.org/10.24114/jpkim.v15i1.42478