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Kinetic study of adsorption of tetracycline from an aqueous solution by nanostructured graphene oxide

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Abstract

In this work, an extensive study on the kinetics of tetracycline adsorption using synthesized graphene oxide has been carried out. The first and second-order kinetic model along with the pore volume and surface diffusion model as one of the most sophisticated models for the kinetic studies in adsorption processes have been used to investigate the mass transfer mechanism of tetracycline adsorption. The results show that the intraparticle diffusion through the graphene oxide pores is the main controlling step of the adsorption process. Characterization of the synthesized graphene oxide has been carried out by BET, SEM, FTIR, and XRD techniques. The specific surface area of the graphene oxide was 15.8 m2 gr−1 with an average pore diameter of 10 nm. It was found that Langmuir isotherm has the most compatibility with the experimental data and has been used as the adsorption model. The shape of isotherm data indicates that the adsorption process is chemisorption dominated by electrostatic forces.

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Acknowledgements

The authors gratefully acknowledge Hakim Sabzevari University, Sabzevar, Iran.

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All persons who meet authorship criteria are listed as authors, and all authors certify that they have participated sufficiently in the work to take public responsibility for the content, including participation in the concept, design, analysis, writing, or revision of the manuscript. Furthermore, each author certifies that this material or similar material has not been and will not be submitted to or published in any other publication before its submission to Environmental Science and Pollution Research. Seyed Moahmmad Mahdi Nouri: conceptualization, methodology, writing—original draft, supervision. Armin Malvandi: performing the experiments. Seyyed Alireza Hosseini: conceptualization, supervision.

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Correspondence to S. M. M. Nouri.

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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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Editorial responsibility: H. Pant.

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Nouri, S.M.M., Malvandi, A. & Hosseini, S.A. Kinetic study of adsorption of tetracycline from an aqueous solution by nanostructured graphene oxide. Int. J. Environ. Sci. Technol. (2024). https://doi.org/10.1007/s13762-024-05685-7

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  • DOI: https://doi.org/10.1007/s13762-024-05685-7

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