Abstract
The present research aimed to evaluate the photocatalytic activity of manganese ferrite (M) and reduced graphene oxide (G) supported on pulverized activated carbon from cow bone waste (PAC-MG). PAC-MG was characterized by different instrumental techniques. The efficiency of PAC-MG was evaluated using solar irradiation under different conditions of photocatalyst concentration, H2O2 concentration, and pH ranges for the discoloration of methylene blue dye (MB). The synergy between the nanomaterials potentiated the photocatalytic activity, reaching 85.5% of MB discoloration when using 0.25 g L−1 of catalyst at neutral pH with no oxidant needed. Furthermore, PAC-MG demonstrated excellent stability in 6 consecutive cycles. Finally, it is expected that the present study can add value to industrial waste and contribute to the development of novel water and wastewater treatment methods, ensuring water quality for human consumption and the environment.
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Acknowledgements
The authors gratefully appreciate and acknowledge the Interdisciplinary Laboratory of Biological and Chemical Analysis (Unicesumar, Brazil) and the support of the researchers of the Complexo de Centrais de Apoio à Pesquisa (COMCAP, Universidade Estadual de Maringá, Brazil) for the microscopy analyses.
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This work was supported by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES, Brazil) with a scholarship granted to EGB, Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, Brazil) with a scholarship and a productivity fellowship granted to MECF and RB, respectively. NUY was also granted with a productivity fellowship from the Cesumar Institute of Science, Technology and Innovation, Cesumar University (ICETI, Brazil).
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Bernardino, E.G., Ferreira, M.E.C., Bergamasco, R. et al. Photocatalyst of manganese ferrite and reduced graphene oxide supported on activated carbon from cow bone for wastewater treatment. Environ Sci Pollut Res 31, 4779–4796 (2024). https://doi.org/10.1007/s11356-023-31501-9
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DOI: https://doi.org/10.1007/s11356-023-31501-9