Nanocomposite hydrogels 3D printed for application in water remediation

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dc.contributor.authorBaigorria, E. [UNESP]
dc.contributor.authorSouza dos Santos, S. [UNESP]
dc.contributor.authorde Moura, M. R. [UNESP]
dc.contributor.authorFraceto, L. F. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionCONICET - Universidad Nacional de Mar Del Plata (UNMdP)
dc.date.accessioned2023-07-29T16:12:52Z
dc.date.available2023-07-29T16:12:52Z
dc.date.issued2023-06-01
dc.description.abstractThree-dimensional (3D) printing of bioinks for the development of nanocomposite hybrid adsorbent hydrogels was performed. Sodium alginate (SA) matrix hydrogels and bentonite clay (SA-B) nanocomposite hydrogels were synthesized for this purpose. The bioinks used were characterized rheologically and the devices obtained were characterized physicochemically and morphologically. The efficiency of the hydrogels in the adsorption of the pesticide paraquat (PQ) was also studied. The results revealed the efficient formation of hybrid hydrogels and that the presence of clay in the biopolymer matrix improved the rheological, mechanical, thermal, and porous properties of the SA-B hydrogels. Both the SA-B30 bioink and corresponding 3D-printed device were found to be the best systems for use. PQ adsorption tests showed equilibrium adsorption capacities of 1.16, 1.33, 1.45, 2.10, 2.29, and 1.64 mg/g for SA, SA-B5, SA-B10, SA-B20, SA-B30, and SA-B50, respectively. Adsorption was exothermic and spontaneous in nature, involving physisorption processes. In addition, it exhibited a correlation mainly with the Freundlich isotherm model and the pseudo-first-order kinetic model used for nanocomposite devices. The SA-B30 hydrogel exhibited the best PQ adsorption performance. Recovery and reusability of the devices were achieved at least six times. This indicates that the synthesized eco-friendly, biodegradable, and low-cost materials can contribute to the circular economy. Thus, the developed adsorbent materials significantly contribute to ensuring that water is safe for human consumption.en
dc.description.affiliationInstitute of Science and Technology São Paulo State University (UNESP). Av. Três de Março, 511, Alto da Boa Vista, Sorocaba, São Paulo
dc.description.affiliationMateriales Compuestos Termoplásticos (CoMP) Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA) CONICET - Universidad Nacional de Mar Del Plata (UNMdP), Av. Colón 10890, Buenos Aires
dc.description.affiliationHybrid Composites and Nanocomposites Group São Paulo State University (UNESP), Av. Brasil 56, Ilha Solteira, São Paulo
dc.description.affiliationUnespInstitute of Science and Technology São Paulo State University (UNESP). Av. Três de Março, 511, Alto da Boa Vista, Sorocaba, São Paulo
dc.description.affiliationUnespHybrid Composites and Nanocomposites Group São Paulo State University (UNESP), Av. Brasil 56, Ilha Solteira, São Paulo
dc.identifierhttp://dx.doi.org/10.1016/j.mtchem.2023.101559
dc.identifier.citationMaterials Today Chemistry, v. 30.
dc.identifier.doi10.1016/j.mtchem.2023.101559
dc.identifier.issn2468-5194
dc.identifier.scopus2-s2.0-85156132467
dc.identifier.urihttp://hdl.handle.net/11449/249921
dc.language.isoeng
dc.relation.ispartofMaterials Today Chemistry
dc.sourceScopus
dc.subjectAdsorption
dc.subjectBentonite
dc.subjectBiopolymers
dc.subjectParaquat
dc.subjectSodium alginate
dc.titleNanocomposite hydrogels 3D printed for application in water remediationen
dc.typeArtigo

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Artigos - Engenharia Ambiental - Sorocaba