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Rengga, W D P and Seubsai, A and Roddecha, S and Yudistira, A and Wiharto, A D (2021) Isotherm adsorption of free fatty acid in waste cooking oil used activated carbon of banana peel as bio-adsorbent. Journal of Physics: Conference Series, 1918 (3). 032008. ISSN 1742-6588

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