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Removal of bisphenol S from drinking water by adsorption using activated carbon and the mechanisms involved

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Abstract

Bisphenol S, an alternative chemical to bisphenol A, has a negative effect on living organisms and has frequently been detected in drinking water systems. A promising and cost-effective method for removing bisphenol S from tap water is adsorption by activated carbon. However, activated carbon significantly decreased the adsorption capacity of bisphenol S in tap water comparing with that in deionized water based on the experimental results. Dissolved organic matter in tap water was likely responsible for it. The adsorption kinetics can be described by a pseudo-second-order model. The Langmuir isotherm model can well describe the process, suggesting monolayer adsorption. The maximum adsorption capacity was calculated as 83.19 mg g−1. Higher temperature and pH were unfavorable to the process. Changes in entropy, enthalpy, and Gibbs free energy were calculated and implied a spontaneous and exothermic adsorption process. Fourier transform infrared spectroscopic analysis found that hydroxyl and amino functional groups are the main groups involved. The research provides a substantial basis for understanding bisphenol S removal from drinking water by adsorption using activated carbon to limit direct exposure to bisphenol S in drinking water.

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Data availability

The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgments

We thank Edanz Group (https://en-author-services.edanzgroup.com/ac) for editing a draft of this manuscript.

Funding

This work was financially supported by the Natural Science Foundation of China (31200399) and the self-determined research funds of Central China Normal University (CCNU18TS023).

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Contributions

CZ involved in writing-reviewing and editing. JJ supervised the study. YW involved in conceptualization and methodology. RZ: participated in visualization and investigation. All authors read and approved the final manuscript.

Corresponding author

Correspondence to J. Jiang.

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The authors declare that they have no competing interests.

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This article does not contain any studies with human participants or animals performed by any of the authors.

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Editorial responsibility: Nour Sh. El-Gendy.

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Zhao, C., Wang, Y., Zhao, R. et al. Removal of bisphenol S from drinking water by adsorption using activated carbon and the mechanisms involved. Int. J. Environ. Sci. Technol. 19, 5289–5300 (2022). https://doi.org/10.1007/s13762-021-03446-4

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  • DOI: https://doi.org/10.1007/s13762-021-03446-4

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