LAPSE:2023.2432
Published Article
LAPSE:2023.2432
Silica Particles Derived from Natural Kaolinite for the Removal of Rhodamine B from Polluted Water
February 21, 2023
Abstract
This manuscript deals with the thermal and chemical modification of a natural kaolinite that shows excellent performance in the capture of a cationic organic pollutant from the aqueous phase. Kaolinite was calcined at 700 °C and treated with HCl to remove aluminium and to obtain a siliceous material. The structural changes and the physico-chemical properties of the materials at different stages of thermal and chemical modification were investigated with several techniques, including XRPD, MAS-NMR, SEM-EDX, FT-IR, and N2 physisorption at 77 K. The ability of the parent kaolinite and siliceous material to capture the organic dye, Rhodamine B, from the aqueous phase was investigated by means of UV-Vis spectroscopy. The siliceous material exhibited better adsorption capacity with respect to the parent kaolinite. Finally, the functional stability of the siliceous material was tested over three cycles of regeneration and adsorption.
This manuscript deals with the thermal and chemical modification of a natural kaolinite that shows excellent performance in the capture of a cationic organic pollutant from the aqueous phase. Kaolinite was calcined at 700 °C and treated with HCl to remove aluminium and to obtain a siliceous material. The structural changes and the physico-chemical properties of the materials at different stages of thermal and chemical modification were investigated with several techniques, including XRPD, MAS-NMR, SEM-EDX, FT-IR, and N2 physisorption at 77 K. The ability of the parent kaolinite and siliceous material to capture the organic dye, Rhodamine B, from the aqueous phase was investigated by means of UV-Vis spectroscopy. The siliceous material exhibited better adsorption capacity with respect to the parent kaolinite. Finally, the functional stability of the siliceous material was tested over three cycles of regeneration and adsorption.
Record ID
Keywords
adsorbent regeneration, kaolinite clay dealumination, organic dye removal, porous silica, Rhodamine B adsorption, wastewater treatment
Subject
Suggested Citation
Celoria G, Miglio V, Paul G, Bisio C, Golemme G, Boccaleri E. Silica Particles Derived from Natural Kaolinite for the Removal of Rhodamine B from Polluted Water. (2023). LAPSE:2023.2432
Author Affiliations
Celoria G: Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale A. Avogadro, Viale T. Michel 11, 15121 Alessandria, Italy
Miglio V: Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale A. Avogadro, Viale T. Michel 11, 15121 Alessandria, Italy [ORCID]
Paul G: Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale A. Avogadro, Viale T. Michel 11, 15121 Alessandria, Italy [ORCID]
Bisio C: Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale A. Avogadro, Viale T. Michel 11, 15121 Alessandria, Italy; CNR-SCITEC Istituto di Scienze e Tecnologie Chimiche “Giulio Natta”, Via G. Venezian 21, 20133 Milano, Ita [ORCID]
Golemme G: Dipartimento di Ingegneria dell’Ambiente, Università della Calabria, Via P. Bucci 45A, 87036 Rende, Italy [ORCID]
Boccaleri E: UPO4Sustainability Center, Viale T. Michel 11, 15121 Alessandria, Italy; Dipartimento per lo Sviluppo Sostenibile e la Transizione Ecologica, Università del Piemonte Orientale A. Avogadro, Piazza S. Eusebio 5, 13100 Vercelli, Italy [ORCID]
Miglio V: Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale A. Avogadro, Viale T. Michel 11, 15121 Alessandria, Italy [ORCID]
Paul G: Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale A. Avogadro, Viale T. Michel 11, 15121 Alessandria, Italy [ORCID]
Bisio C: Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale A. Avogadro, Viale T. Michel 11, 15121 Alessandria, Italy; CNR-SCITEC Istituto di Scienze e Tecnologie Chimiche “Giulio Natta”, Via G. Venezian 21, 20133 Milano, Ita [ORCID]
Golemme G: Dipartimento di Ingegneria dell’Ambiente, Università della Calabria, Via P. Bucci 45A, 87036 Rende, Italy [ORCID]
Boccaleri E: UPO4Sustainability Center, Viale T. Michel 11, 15121 Alessandria, Italy; Dipartimento per lo Sviluppo Sostenibile e la Transizione Ecologica, Università del Piemonte Orientale A. Avogadro, Piazza S. Eusebio 5, 13100 Vercelli, Italy [ORCID]
Journal Name
Processes
Volume
10
Issue
5
First Page
964
Year
2022
Publication Date
2022-05-11
ISSN
2227-9717
Version Comments
Original Submission
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PII: pr10050964, Publication Type: Journal Article
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LAPSE:2023.2432
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https://doi.org/10.3390/pr10050964
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[v1] (Original Submission)
Feb 21, 2023
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Feb 21, 2023
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