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Open AccessArticle

The Innovation Comes from the Sea: Chitosan and Alginate Hybrid Gels and Films as Sustainable Materials for Wastewater Remediation

1
Department of Chemistry, Università degli studi di Torino, Via P. Giuria 7, 10125 Torino, Italy
2
NIS Centre, Università degli studi di Torino, Via P. Giuria 7, 10125 Torino, Italy
3
Department of Environmental Sciences, Informatics and Statistics, Università Ca’ Foscari di Venezia, Via Torino 155, 30172 Venezia-Mestre, Italy
4
Department of Applied Science and Technology DISAT, Polytechnic of Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy
*
Author to whom correspondence should be addressed.
Current address: Independent Researcher, Via Borgomasino 39, 10149 Torino, Italy.
Int. J. Mol. Sci. 2020, 21(2), 550; https://doi.org/10.3390/ijms21020550
Received: 29 November 2019 / Revised: 10 January 2020 / Accepted: 13 January 2020 / Published: 15 January 2020
(This article belongs to the Special Issue Chitosan Functionalizations, Formulations and Composites)
The growing utilization of renewable and residual biomasses for environmental preservation and remediation are important goals to be pursued to minimize the environmental impact of human activities. In this paper, sodium alginate (derived from brown algae) was crosslinked using chitosan (mainly derived from the exoskeleton of crustaceans) in the presence of biowaste-derived substances isolated from green compost (BBS-GC), to produce hydrogels and dried films. The obtained materials were tested as adsorbents for wastewater remediation. To this purpose, gels were characterized using a multi-analytical approach and used as active substrates for the removal of three differently-charged molecules, chosen as model pollutants: crystal violet, rhodamine B, and orange II. The effectiveness of the gel formulations was demonstrated and attributed to the variety of active functionalities introduced by the different precursors, the structural factors and the peculiar physicochemical properties of the resulting materials. View Full-Text
Keywords: alginate; biopolymers; biowaste valorisation; chitosan; hydrogels; wastewater remediation alginate; biopolymers; biowaste valorisation; chitosan; hydrogels; wastewater remediation
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MDPI and ACS Style

Tummino, M.L.; Magnacca, G.; Cimino, D.; Laurenti, E.; Nisticò, R. The Innovation Comes from the Sea: Chitosan and Alginate Hybrid Gels and Films as Sustainable Materials for Wastewater Remediation. Int. J. Mol. Sci. 2020, 21, 550.

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