Applicability of a chitosan-perlite nanocomposite for removing Mn (II) by adsorption approach

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorFederal University of Rio Grande do Norte-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatordos Santos, Elisama V.-
Autor(es): dc.creatorde Araújo, Eliane G.-
Autor(es): dc.creatorCabral, Sheila P. M.-
Autor(es): dc.creatorMonteiro, Mayra K. Sales-
Autor(es): dc.creatorSantos, José E. L.-
Autor(es): dc.creatorMartínez-Huitle, Carlos A.-
Autor(es): dc.creatorFernandes, Nedja S.-
Data de aceite: dc.date.accessioned2025-08-21T21:55:36Z-
Data de disponibilização: dc.date.available2025-08-21T21:55:36Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s42247-025-01012-z-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/300875-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/300875-
Descrição: dc.descriptionThis work aims to investigate the use of a chitosan-perlite nanocomposite as an adsorbent for removing Mn(II) from water. The nanocomposite was characterized by thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Scanning electron microscope (SEM) and Brunauer–Emmett–Teller (BET) analysis. The adsorbent was studied in aqueous solutions containing Mn(II), revealing that its maximum capacity was about 23.09 mg g−1 in 90 min at a concentration of 50 mg L−1 at 25 °C according the correlations obtained by Langmuir model. The concentration of Mn(II) was monitored by Square-Wave Cathodic Stripping Voltammetry (SWCSV) approach, which was previously standardized, using glassy carbon, Ag/AgCl (3 mol L−1—KCl) and platinum as working, reference and counter electrodes, respectively. The analysis of residuals from the linear regression proved that a linear response exists from 7.76 × 10–7 mol L−1 to 1.42 × 10–4 mol L−1, with regression coefficients greater than 0.9969, achieving a good linear relationship between Mn(II) concentration and current response at the analytic curve. Then, Mn(II) removal was monitored using the SWCSV approach determining that, under the best conditions, chitosan-perlite nanocomposite removed > 90% in 120 min, at adsorption tests. Consequently, this material seems to be a potential tool for environmental applications.-
Descrição: dc.descriptionRenewable Energies and Environmental Sustainability Research Group Institute of Chemistry Federal University of Rio Grande do Norte, Campus Universitario, Av. Salgado Filho 3000, Lagoa Nova, RN-
Descrição: dc.descriptionNational Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT–DATREM) Institute of Chemistry UNESP, P.O. Box 355, SP-
Descrição: dc.descriptionInstitute of Chemistry Federal University of Rio Grande do Norte, Av. Salgado Filho 3000, Lagoa Nova, RN-
Descrição: dc.descriptionNational Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT–DATREM) Institute of Chemistry UNESP, P.O. Box 355, SP-
Idioma: dc.languageen-
Relação: dc.relationEmergent Materials-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectChitosan-
Palavras-chave: dc.subjectElectroanalysis-
Palavras-chave: dc.subjectManganese-
Palavras-chave: dc.subjectNanocomposite-
Palavras-chave: dc.subjectPerlite-
Título: dc.titleApplicability of a chitosan-perlite nanocomposite for removing Mn (II) by adsorption approach-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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