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Volume 20
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10.3390/ijerph20032448
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Article

Effect of pH on Adsorption of Tetracycline Antibiotics on Graphene Oxide

by
Zhenghao Li
1,
Hua Jiang
1,*,
Xipeng Wang
1,
Cunfang Wang
1,* and
Xiangsheng Wei
2
1
College of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
2
Shandong Aifudi Biological Co., Ltd., Jining 272000, China
*
Authors to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2023, 20(3), 2448; https://doi.org/10.3390/ijerph20032448
Submission received: 27 December 2022 / Revised: 19 January 2023 / Accepted: 27 January 2023 / Published: 30 January 2023
(This article belongs to the Section Chemoenvironment)
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Abstract

Graphene oxide (GO) has good dispersibility and adsorption capacity for antibiotics adsorption, a complex process influenced by many factors. In this work, the adsorption mechanism of GO on tetracycline antibiotics at different pH was studied to address its attenuated effects on the microbial growth. The results showed that the adsorption process of GO on three antibiotics, namely, tetracycline (TC), oxytetracycline (OTC), and chlortetracycline (CTC), followed the pseudo-second-order kinetic model. The maximum adsorption capacities were observed at pH5 which were 133.0 mg/g for TC, 125.4 mg/g for OTC, and 167.0 mg/g for CTC. Furthermore, the reaction was uniform adsorption with a single layer on the surface of GO, and heating was conducive to the reaction. In the microbial growth experiment, the growth of E. coli and B. subtilis senses was optimal at pH5, which was consistent with the adsorption experiment. This study analyzed the effect of pH on the adsorption of antibiotics by GO and provided a theoretical basis for the further application of GO in various aquatic environments.
Keywords: graphene oxide; tetracycline antibiotic; kinetic model; microbial growth graphene oxide; tetracycline antibiotic; kinetic model; microbial growth

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MDPI and ACS Style

Li, Z.; Jiang, H.; Wang, X.; Wang, C.; Wei, X. Effect of pH on Adsorption of Tetracycline Antibiotics on Graphene Oxide. Int. J. Environ. Res. Public Health 2023, 20, 2448. https://doi.org/10.3390/ijerph20032448

AMA Style

Li Z, Jiang H, Wang X, Wang C, Wei X. Effect of pH on Adsorption of Tetracycline Antibiotics on Graphene Oxide. International Journal of Environmental Research and Public Health. 2023; 20(3):2448. https://doi.org/10.3390/ijerph20032448

Chicago/Turabian Style

Li, Zhenghao, Hua Jiang, Xipeng Wang, Cunfang Wang, and Xiangsheng Wei. 2023. "Effect of pH on Adsorption of Tetracycline Antibiotics on Graphene Oxide" International Journal of Environmental Research and Public Health 20, no. 3: 2448. https://doi.org/10.3390/ijerph20032448

APA Style

Li, Z., Jiang, H., Wang, X., Wang, C., & Wei, X. (2023). Effect of pH on Adsorption of Tetracycline Antibiotics on Graphene Oxide. International Journal of Environmental Research and Public Health, 20(3), 2448. https://doi.org/10.3390/ijerph20032448

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