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Remediation of water tainted with noxious hexavalent chromium using cetylpyridinium-modified bagasse biomass: adsorption and regeneration studies

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Abstract

Herein, cetylpyridinium-modified bagasse (SB-CPC) biomass was synthesized and applied for removal of noxious Cr(VI) ions from aqueous matrix. Batch mode analyses were conducted, and the results showed that SB-CPC adsorbent has a maximum uptake capacity (qm) of 70.5 ± 3.2 mg g–1 at 303 K. The adsorption isotherms and kinetics for elimination of Cr(VI) by SB-CPC were better fitted by Langmuir model and pseudo-second-order model, respectively. The occurrence of pseudo-second-order kinetic could be mainly influenced by the intra-particle diffusion mass transfer. Electrostatic attraction was the dominant underlying reaction mechanism followed by pore filing effect (minor). Thermodynamic study affirms the endothermic behavior and occurrence of physical adsorption process. SB-CPC adsorbent had exhibited an outstanding desorption-regeneration performance using NaOH solution; accordingly, it can practically be applied for remediation of wastewater tainted with Cr(VI) ions.

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All data generated and analyzed in this study are included within the article.

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Funding

The research was supported by the National Key Research and Development Program of China (2018YFD0401402–04) and Zhongyuan Scholars Foundation (202101510005).

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Authors

Contributions

1. Farid Mzee Mpatani (papilampatani@gmail.com): conceptualization; methodology; formal analysis; investigation; writing—original draft; and writing—review and editing.

2. Aaron Albert Aryee (a.niiayi@yahoo.com): conceptualization; methodology; and investigation.

3. Lingbo Qu (qulingbo@zzu.edu.cn): conceptualization; supervision; and funding acquisition.

4. Runping Han (rphan67@zzu.edu.cn): conceptualization; resources; project administration; writing—review and editing; visualization; supervision; and funding acquisition.

Corresponding author

Correspondence to Runping Han.

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The authors declare no competing interests.

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Responsible Editor: Ioannis A. Katsoyiannis

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Highlights

• SB-CPC adsorbent was fabricated to remove Cr(VI) in batch mode.

• SB-CPC exhibits good adsorptive property on Cr(VI).

• Electrostatic attraction is dominant underlying mechanism for Cr(VI) uptake.

• Adsorption isotherms and kinetics were nominated by Langmuir and PSO models.

• SB-CPC exhibited high reusability potential.

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Mpatani, F.M., Aryee, A.A., Qu, L. et al. Remediation of water tainted with noxious hexavalent chromium using cetylpyridinium-modified bagasse biomass: adsorption and regeneration studies. Environ Sci Pollut Res 30, 44148–44160 (2023). https://doi.org/10.1007/s11356-023-25385-y

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  • DOI: https://doi.org/10.1007/s11356-023-25385-y

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