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Polymers
Volume 14
Issue 6
10.3390/polym14061268
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Article

UV-Cured Chitosan and Gelatin Hydrogels for the Removal of As(V) and Pb(II) from Water

by
Camilla Noè
1,
Michael Zanon
1,
Amaya Arencibia
2,
María-José López-Muñoz
3,
Nieves Fernández de Paz
4,
Paola Calza
5 and
Marco Sangermano
1,*
1
Politecnico di Torino, Dipartimento di Scienza Applicata e Tecnologia, C.so Duca Degli Abruzzi 24, 10129 Torino, Italy
2
Departamento de Tecnología Química, Energética y Mecánica, ESCET, Universidad Rey Juan Carlos, C/Tulipán s/n, Móstoles, 28933 Madrid, Spain
3
Departamento de Tecnología Química y Ambiental, ESCET, Universidad Rey Juan Carlos, C/Tulipán s/n, Móstoles, 28933 Madrid, Spain
4
Department of Applications, Metrohm Hispania, C/Aguacate 15, 28044 Madrid, Spain
5
Dipartimento di Chimica, Università di Torino, Via P. Giuria 5, 10125 Torino, Italy
*
Author to whom correspondence should be addressed.
Polymers 2022, 14(6), 1268; https://doi.org/10.3390/polym14061268
Submission received: 24 February 2022 / Revised: 10 March 2022 / Accepted: 18 March 2022 / Published: 21 March 2022
(This article belongs to the Collection Hydrogels)
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Abstract

In this study, new photocurable biobased hydrogels deriving from chitosan and gelatin are designed and tested as sorbents for As(V) and Pb(II) removal from water. Those renewable materials were modified by a simple methacrylation reaction in order to make them light processable. The success of the reaction was evaluated by both 1H-NMR and FTIR spectroscopy. The reactivity of those formulations was subsequently investigated by a real-time photorheology test. The obtained hydrogels showed high swelling capability reaching up to 1200% in the case of methacrylated gelatin (GelMA). Subsequently, the Z-potential of the methacrylated chitosan (MCH) and GelMA was measured to correlate their electrostatic surface characteristics with their adsorption properties for As(V) and Pb(II). The pH of the solutions proved to have a huge influence on the As(V) and Pb(II) adsorption capacity of the obtained hydrogels. Furthermore, the effect of As(V) and Pb(II) initial concentration and contact time on the adsorption capability of MCH and GelMA were investigated and discussed. The MCH and GelMA hydrogels demonstrated to be promising sorbents for the removal of heavy metals from polluted waters.
Keywords: chitosan; gelatin; hydrogels; UV-curing; heavy metals adsorption chitosan; gelatin; hydrogels; UV-curing; heavy metals adsorption

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MDPI and ACS Style

Noè, C.; Zanon, M.; Arencibia, A.; López-Muñoz, M.-J.; Fernández de Paz, N.; Calza, P.; Sangermano, M. UV-Cured Chitosan and Gelatin Hydrogels for the Removal of As(V) and Pb(II) from Water. Polymers 2022, 14, 1268. https://doi.org/10.3390/polym14061268

AMA Style

Noè C, Zanon M, Arencibia A, López-Muñoz M-J, Fernández de Paz N, Calza P, Sangermano M. UV-Cured Chitosan and Gelatin Hydrogels for the Removal of As(V) and Pb(II) from Water. Polymers. 2022; 14(6):1268. https://doi.org/10.3390/polym14061268

Chicago/Turabian Style

Noè, Camilla, Michael Zanon, Amaya Arencibia, María-José López-Muñoz, Nieves Fernández de Paz, Paola Calza, and Marco Sangermano. 2022. "UV-Cured Chitosan and Gelatin Hydrogels for the Removal of As(V) and Pb(II) from Water" Polymers 14, no. 6: 1268. https://doi.org/10.3390/polym14061268

APA Style

Noè, C., Zanon, M., Arencibia, A., López-Muñoz, M.-J., Fernández de Paz, N., Calza, P., & Sangermano, M. (2022). UV-Cured Chitosan and Gelatin Hydrogels for the Removal of As(V) and Pb(II) from Water. Polymers, 14(6), 1268. https://doi.org/10.3390/polym14061268

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