Synthesizing a novel Zr/Fe/Al‑incorporated cross‑linked chitosan as absorbent for effective removal of fluoride from aqueous solution
Synthesizing a novel Zr/Fe/Al‑incorporated cross‑linked chitosan as absorbent for effective removal of fluoride from aqueous solution
Zr/Fe/Al-modified chitosan beads were synthesized as a potential absorbent to remove fluoride on wastewater. In this study, the effects of solution pH, absorbent dosage, initial concentration, adsorption time, and coexisting ions were evaluated through a series of experiments. It was found that an adsorption capacity of 37.49 mg/g was achieved in the conditions with pH at 6.0, 1.6 g/L of the dose of CS-ZFA, 60 mg/L of fluoride concentration, and 120 min adsorption time. The adsorption results indicated that fluoride adsorption by CS-ZFA can be explained by Langmuir isotherm. Moreover, the kinetic studies indicated that the adsorption process was in good compliance with the pseudo-second-order kinetics and intra-particle diffusion model. The newly synthesized absorbents were characterized by SEM, EDS, FTIR, and TG analysis. Based on the characterization, the high adsorption capacity of the newly synthesized absorbent is due to the electrostatic attraction between amino and metal ions and the formation of CS-ZFA complex for fluoride. These excellent adsorption properties revealed that CS-ZFA is an effective absorbent for removing fluoride in aqueous solutions of environmental remediation.
Chitosan, Electrostatic attraction, Fluoride adsorption, Kinetics, Langmuir isotherm, Metal ions
Feng, Li
66081773-510f-47af-91d1-ab2685d22e54
Zhang, Yingting
5224288d-4499-4f0b-a124-d354f1ee0f0b
Xu, Bo
8bb0f7b7-2563-4623-a6d4-ffb7d8ff52b7
Liu, Yongqiang
75adc6f8-aa83-484e-9e87-6c8442e344fa
Qiu, Haiyan
f680b343-6dce-4f0f-a73d-c6aa519db8d2
Lan, Guihong
454521c8-d07c-481a-8929-b1730e34b995
Xu, Qianxia
726ed0f3-3a8e-408e-be8b-817bf6efacb1
24 September 2021
Feng, Li
66081773-510f-47af-91d1-ab2685d22e54
Zhang, Yingting
5224288d-4499-4f0b-a124-d354f1ee0f0b
Xu, Bo
8bb0f7b7-2563-4623-a6d4-ffb7d8ff52b7
Liu, Yongqiang
75adc6f8-aa83-484e-9e87-6c8442e344fa
Qiu, Haiyan
f680b343-6dce-4f0f-a73d-c6aa519db8d2
Lan, Guihong
454521c8-d07c-481a-8929-b1730e34b995
Xu, Qianxia
726ed0f3-3a8e-408e-be8b-817bf6efacb1
Feng, Li, Zhang, Yingting, Xu, Bo, Liu, Yongqiang, Qiu, Haiyan, Lan, Guihong and Xu, Qianxia
(2021)
Synthesizing a novel Zr/Fe/Al‑incorporated cross‑linked chitosan as absorbent for effective removal of fluoride from aqueous solution.
Water, Air and Soil Pollution, 232 (10), [401].
(doi:10.1007/s11270-021-05355-1).
Abstract
Zr/Fe/Al-modified chitosan beads were synthesized as a potential absorbent to remove fluoride on wastewater. In this study, the effects of solution pH, absorbent dosage, initial concentration, adsorption time, and coexisting ions were evaluated through a series of experiments. It was found that an adsorption capacity of 37.49 mg/g was achieved in the conditions with pH at 6.0, 1.6 g/L of the dose of CS-ZFA, 60 mg/L of fluoride concentration, and 120 min adsorption time. The adsorption results indicated that fluoride adsorption by CS-ZFA can be explained by Langmuir isotherm. Moreover, the kinetic studies indicated that the adsorption process was in good compliance with the pseudo-second-order kinetics and intra-particle diffusion model. The newly synthesized absorbents were characterized by SEM, EDS, FTIR, and TG analysis. Based on the characterization, the high adsorption capacity of the newly synthesized absorbent is due to the electrostatic attraction between amino and metal ions and the formation of CS-ZFA complex for fluoride. These excellent adsorption properties revealed that CS-ZFA is an effective absorbent for removing fluoride in aqueous solutions of environmental remediation.
Text
Fluoride adsorption by chitosan YL 20200901 - Copy
- Author's Original
More information
Published date: 24 September 2021
Additional Information:
Funding Information:
This work was supported by Science and Technology Key R&D projects “Integrated R&D and Demonstration of Wastewater Treatment Stabilization Standards in Typical Industrial Clusters” of Sichuan Province (2018SZ0313).
Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Nature Switzerland AG.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
Keywords:
Chitosan, Electrostatic attraction, Fluoride adsorption, Kinetics, Langmuir isotherm, Metal ions
Identifiers
Local EPrints ID: 452505
URI: http://eprints.soton.ac.uk/id/eprint/452505
ISSN: 0049-6979
PURE UUID: 2974f284-0f6e-4aa7-a218-e6fe16cb611c
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Date deposited: 11 Dec 2021 11:24
Last modified: 17 Mar 2024 06:54
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Contributors
Author:
Li Feng
Author:
Yingting Zhang
Author:
Bo Xu
Author:
Haiyan Qiu
Author:
Guihong Lan
Author:
Qianxia Xu
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