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Removal of reactive blue 250 dye from aqueous medium using Cu/Fe catalyst supported on Nb2O5 through oxidation with H2O2

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Abstract

This study aimed to synthesize a new bimetallic Fenton catalyst using Nb2O5 as the support for the active metal species of copper and iron. The coprecipitation method was used to prepare the catalyst, characterized by several technical means. The efficiency of the material was evaluated in batch mode in the degradation of a reactive blue 250 textile dye in aqueous media, with the study of the critical variables for the process. The catalyst employed resulted in 80% decolorization of the RB dye under the experimental conditions of pH 3, [Catalyst]0 = 1.0 g L−1, [H2O2]0 = 200 mg L−1, [RB]0 = 10 mg L−1. It proved to be very active under natural sunlight in the photo-Fenton system. It was possible to regenerate it and use it in five Fenton reaction cycles, demonstrating its stability and the quality of niobium as support.Please confirm if all the author names are presented accurately and in the correct sequence (given name, middle name/initial, family name). Also, kindly confirm the details in the metadata are correct.The names are correct.

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Acknowledgements

This work was supported by the Conselho Nacional de Desenvolvimento Científico e Tecnológico—Brasil (CNPq) [Proc. 159371/2019-8]. Fundação Araucária (FA-PR) for the RENEWABLE HYDROCARBONET (NAPI-HCR) project.

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  1. Chemical Engineering Department of Maringa State University, Av. Colombo, 5790 – Zone 7, Maringa, PR, 87020-900, Brazil

    Ramiro Picoli Nippes, Paula Derksen Macruz, Aline Domingues Gomes, Camila Pereira Girotto, Mara Heloisa Neves Olsen Scaliante & Marcos de Souza

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Nippes, R.P., Macruz, P.D., Gomes, A.D. et al. Removal of reactive blue 250 dye from aqueous medium using Cu/Fe catalyst supported on Nb2O5 through oxidation with H2O2. Reac Kinet Mech Cat 135, 2697–2717 (2022). https://doi.org/10.1007/s11144-022-02279-7

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