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- 저자 : Pinhatio Fernanda R. (검색결과 1 건)
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Maia Lana S.,Duizit Letícia D.,Pinhatio Fernanda R.,Mulinari Daniella R. 한국탄소학회 2021 Carbon Letters Vol.31 No.4
The discharge of dye-containing industrial efuents such as methylene blue (MB) in water bodies has resulted in severe aquatic and human life problems. In addition to this factor, there is the accumulation of banana peel wastes, which can generate ecological damage. Thus, this research purpose a diferent method from the literature using the banana peel waste (BP) to produce activated carbon (ACBP) by NaOH activation followed by pyrolysis at 400 °C to remove methylene blue (MB). The material was characterized by TGA, XRD, SEM, BET, and FTIR. The infuence of dye concentration (10, 25, 50, 100, 250, and 500 mg L−1) was investigated. ACBP presented a well-developed pore structure with a predominance of mesopores and macropores. This morphological structure directly infuences the MB removal capacity. The highest efciency for dye removal was in the MB initial concentration of 25 mg L−1, sorbent of 0.03 g, and contact time of 60 min, which were 99.8%. The adsorption isotherms were well defned by Langmuir, Freundlich, and Temkin isotherm models. The Langmuir model represented the best ft of experimental data for ACBP with a maximum adsorption capacity of 232.5 mg g−1. This adsorbent showed a comparatively high performance to some previous works. So, the banana peel waste is an efcient resource for producing activated carbon and the adsorption of methylene blue.
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