Efficiency of ZnO Nanoparticles in the Treatment of Effluent with Remazol Yellow Gold

Efficiency of ZnO Nanoparticles in the Treatment of Effluent with Remazol Yellow Gold





zinc oxide, photocatalytic degradation, hydrothermal method, azo dye


Zinc oxide (ZnO) was synthesized by the short-time microwave-assisted hydrothermal method and characterized by X-Ray Diffraction, Scanning Electron Microscopy and N2 adsorption-desorption techniques. The photocatalytic activity of ZnO was evaluated on degradation of gold yellow remazol azo dye (RNL) in presence of UVC irradiation. The effect of dye concentration, photocatalyst mass and dye solution pH was investigated. The characterizations of the material showed the formation of the hexagonal phase with high long-range order and formation of particle aggregates resulting in a quasi-spherical morphology. Photocatalysis experiments showed a high photocatalytic efficiency (92%) in dye degradation at short time. In acidic conditions and low dye concentrations the photocatalytic the effect was more effective. RNL photodegradation followed the pseudo-first order kinetic model. The Langmuir-Hinshelwood (L-H) model was used to describe the photocatalytic process.


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Author Biographies

Guilherme Leocárdio Lucena, Universidade Federal da Paraíba

Dr., Dept. of Basic, Social and Agricultural Sciences, UFPB, Bananeiras, PB, Brazil. guilhermelucena@cchsa.ufpb.br

Renata Júlia Cordeiro Araújo, Universidade Federal da Paraíba

Graduation Student, Agroindustry, UFPB, Bananeiras, PB, Brazil. renatajulia1998@gmail.com

Rafael Pereira da Silva, Universidade Federal da Paraíba

Graduation Student, Agroindustry, UFPB, Bananeiras, PB, Brazil. rafaelps19972015@gmail.com

Anely Maciel de Melo, Universidade Federal da Paraíba

Dr. Prof., Dept. of Agro. Mgmt. and Tech., UFPB, Bananeiras, PB, Brazil. anely-maciel@live.com

Max Rocha Quirino, Universidade Federal da Paraíba

Dr. Prof., Dept. of Basic, Social and Agricultural Sciences, UFPB, Bananeiras, PB, Brazil. maxrochaq@gmail.com


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How to Cite

Lucena, G. L., Cordeiro Araújo, R. J., Silva, R. P. da, de Melo, A. M., & Quirino, M. R. (2024). Efficiency of ZnO Nanoparticles in the Treatment of Effluent with Remazol Yellow Gold. Semina: Ciências Exatas E Tecnológicas, 45, e49498. https://doi.org/10.5433/1679-0375.2024.v45.49498