Application of the Biomass of Leaves of Diospyros kaki L.f. (Ebenaceae) in the Removal of Metal Ions from Aqueous Media

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversity of Grande Dourados-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorINQUI—Federal University of Mato Grosso do Sul-
Autor(es): dc.creatorGalera, Rodrigo Martorelli-
Autor(es): dc.creatorda Silva, Adrielli Cristina Peres-
Autor(es): dc.creatorJorgetto, Alexandre de Oliveira-
Autor(es): dc.creatorWondracek, Marcos Henrique Pereira-
Autor(es): dc.creatorSaeki, Margarida Juri-
Autor(es): dc.creatorSchneider, José Fabián-
Autor(es): dc.creatorPedrosa, Valber de Albuquerque-
Autor(es): dc.creatorMartines, Marco Autônio Utrera-
Autor(es): dc.creatorCastro, Gustavo Rocha-
Data de aceite: dc.date.accessioned2025-08-21T15:32:57Z-
Data de disponibilização: dc.date.available2025-08-21T15:32:57Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2023-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3390/separations11010012-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/300789-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/300789-
Descrição: dc.descriptionUsing straightforward and cost-effective methods, persimmon leaves were converted into high-quality powder. This powder was applied as an adsorbent for the removal of Cu(II) and Cd(II) from aqueous solutions. Scanning electron microscopy (SEM) revealed the presence of particles with non-homogeneous sizes and rough textures. The biosorbent exhibited a specific surface area of approximately 0.44 ± 0.015 m2 g−1. Elemental analysis and energy-dispersive X-ray spectroscopy (EDX) confirmed the presence of elements such as sulfur, phosphorus, nitrogen, and oxygen. The results of 13C nuclear magnetic resonance (13C-NMR), obtained using the cross-polarization technique, show the presence of groups containing sulfur and oxygen. Infrared spectroscopy (FTIR) indicated the existence of amine and hydroxyl groups. The material was used in the solid-phase extraction of Cu(II) and Cd(II) in batch experiments, and its adsorption capacity was evaluated as a function of time, pH, and analyte concentration. The fraction with a diameter between 63 and 106 μm was selected for the adsorption tests. Kinetic equilibrium was reached within 5 min, and the experimental data were fitted to the pseudo-second-order kinetic model. The optimum pH for the adsorption of both metal species was approximately 5.0. The adsorption isotherms were adjusted using the modified Langmuir equation, and the maximum amount of metal species extracted from the solution was determined to be 0.213 mmol g−1 for Cu(II) and 0.215 mmol g−1 for Cd(II), with high linear correlation coefficients for both metals. Persimmon leaves are typically abundant during the growing season, and because they are seasonal, the Diospyros kaki L.f. tree undergoes the natural process of leaf abscission, ensuring the availability of leaves for application.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionChemistry and Biochemistry Department Institute of Biosciences of Botucatu-UNESP, C.P. 510, SP-
Descrição: dc.descriptionInterdisciplinary Laboratory of Nanostructures and Semiconductors (LINSE-IQ-UNESP), Rua Francisco Degni, 55, SP-
Descrição: dc.descriptionFaculty of Science and Technology University of Grande Dourados, Rodovia Dourados-Itahum, km 12, MS-
Descrição: dc.descriptionInstituto de Física Universidade de São Paulo (USP), SP-
Descrição: dc.descriptionInstitute of Chemistry INQUI—Federal University of Mato Grosso do Sul, MS-
Descrição: dc.descriptionChemistry and Biochemistry Department Institute of Biosciences of Botucatu-UNESP, C.P. 510, SP-
Descrição: dc.descriptionInterdisciplinary Laboratory of Nanostructures and Semiconductors (LINSE-IQ-UNESP), Rua Francisco Degni, 55, SP-
Descrição: dc.descriptionCNPq: 312361/2021-1-
Idioma: dc.languageen-
Relação: dc.relationSeparations-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectadsorption-
Palavras-chave: dc.subjectaqueous solutions-
Palavras-chave: dc.subjectcadmium ions-
Palavras-chave: dc.subjectcopper ions-
Palavras-chave: dc.subjectheavy metals-
Palavras-chave: dc.subjectpersimmon leaves-
Palavras-chave: dc.subjectsolid-phase extraction-
Título: dc.titleApplication of the Biomass of Leaves of Diospyros kaki L.f. (Ebenaceae) in the Removal of Metal Ions from Aqueous Media-
Tipo de arquivo: dc.typelivro digital-
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