Synthesis and physicochemical characterization of a novel adsorbent based on yttrium silicate: A potential material for removal of lead and cadmium from aqueous media
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.jece.2020.103922 http://hdl.handle.net/11449/202111 |
Resumo: | A new metallosilicate based on yttrium was synthesized and characterized by XRD, FT-IR, 29Si MAS-NMR, and 89Y MAS-NMR. The mixed framework of the material was confirmed by the detection of distinct chemical shift groups using 29Si MAS-NMR (at -82 to -87 ppm, -91 to -94 ppm, -96 to -102 ppm, and -105 to -108 ppm), as well as four distinct chemical shifts in the 89Y MAS-NMR spectrum (at -89, -142, -160, and -220 ppm). Adsorption and kinetic analyses indicated the potential of the new material for the removal of lead and cadmium from aqueous media. The adsorption results for lead indicated that dynamic equilibrium was reached after five hours, with total lead removal of around 94 %, while for cadmium it was reached in the first hour, with total cadmium removal of around 74 %. The adsorptions of lead and cadmium were modeled using pseudo-first order (PFO) and pseudo-second order (PSO) kinetic models. Although both models provided high R2 values (0.9903 and 0.9980, respectively), the PSO model presented a much lower χ2red value (4.41 × 10-4), compared to the PFO model (2.12 × 10-3), which indicated that the rate-limiting step was probably due to the chemisorption of lead from the solution onto the yttrium-based metallosilicate. |
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Synthesis and physicochemical characterization of a novel adsorbent based on yttrium silicate: A potential material for removal of lead and cadmium from aqueous media29Si89Y MAS-NMRAdsorptionCadmium and lead remediationChemisorptionYttrium silicatesA new metallosilicate based on yttrium was synthesized and characterized by XRD, FT-IR, 29Si MAS-NMR, and 89Y MAS-NMR. The mixed framework of the material was confirmed by the detection of distinct chemical shift groups using 29Si MAS-NMR (at -82 to -87 ppm, -91 to -94 ppm, -96 to -102 ppm, and -105 to -108 ppm), as well as four distinct chemical shifts in the 89Y MAS-NMR spectrum (at -89, -142, -160, and -220 ppm). Adsorption and kinetic analyses indicated the potential of the new material for the removal of lead and cadmium from aqueous media. The adsorption results for lead indicated that dynamic equilibrium was reached after five hours, with total lead removal of around 94 %, while for cadmium it was reached in the first hour, with total cadmium removal of around 74 %. The adsorptions of lead and cadmium were modeled using pseudo-first order (PFO) and pseudo-second order (PSO) kinetic models. Although both models provided high R2 values (0.9903 and 0.9980, respectively), the PSO model presented a much lower χ2red value (4.41 × 10-4), compared to the PFO model (2.12 × 10-3), which indicated that the rate-limiting step was probably due to the chemisorption of lead from the solution onto the yttrium-based metallosilicate.Department of Physics Institute of Biosciences Letters and Exact Sciences São Paulo State University (UNESP) Campus of São JoséNuclear and Energy Research Institute (IPEN), Av. Prof. Lineu Prestes 2242University of Franca, Av. Dr. Armando Salles Oliveira 201BAM - Federal Institute for Materials Research and Testing NMR Spectroscopy Division 1.3 Structure AnalysisDepartment of Physics Institute of Biosciences Letters and Exact Sciences São Paulo State University (UNESP) Campus of São JoséUniversidade Estadual Paulista (Unesp)Nuclear and Energy Research Institute (IPEN)University of FrancaDivision 1.3 Structure AnalysisLitrenta Medeiros, Vinicius [UNESP]De Araujo, Leandro GoulartRubinho Ratero, Davi [UNESP]Silva Paula, Alex [UNESP]Ferreira Molina, EduardoJaeger, ChristianMarumo, Júlio TakehiroNery, José Geraldo [UNESP]2020-12-12T02:50:06Z2020-12-12T02:50:06Z2020-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.jece.2020.103922Journal of Environmental Chemical Engineering, v. 8, n. 4, 2020.2213-3437http://hdl.handle.net/11449/20211110.1016/j.jece.2020.1039222-s2.0-85091044821Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Environmental Chemical Engineeringinfo:eu-repo/semantics/openAccess2021-10-23T06:37:14Zoai:repositorio.unesp.br:11449/202111Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T06:37:14Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Synthesis and physicochemical characterization of a novel adsorbent based on yttrium silicate: A potential material for removal of lead and cadmium from aqueous media |
title |
Synthesis and physicochemical characterization of a novel adsorbent based on yttrium silicate: A potential material for removal of lead and cadmium from aqueous media |
spellingShingle |
Synthesis and physicochemical characterization of a novel adsorbent based on yttrium silicate: A potential material for removal of lead and cadmium from aqueous media Litrenta Medeiros, Vinicius [UNESP] 29Si 89Y MAS-NMR Adsorption Cadmium and lead remediation Chemisorption Yttrium silicates |
title_short |
Synthesis and physicochemical characterization of a novel adsorbent based on yttrium silicate: A potential material for removal of lead and cadmium from aqueous media |
title_full |
Synthesis and physicochemical characterization of a novel adsorbent based on yttrium silicate: A potential material for removal of lead and cadmium from aqueous media |
title_fullStr |
Synthesis and physicochemical characterization of a novel adsorbent based on yttrium silicate: A potential material for removal of lead and cadmium from aqueous media |
title_full_unstemmed |
Synthesis and physicochemical characterization of a novel adsorbent based on yttrium silicate: A potential material for removal of lead and cadmium from aqueous media |
title_sort |
Synthesis and physicochemical characterization of a novel adsorbent based on yttrium silicate: A potential material for removal of lead and cadmium from aqueous media |
author |
Litrenta Medeiros, Vinicius [UNESP] |
author_facet |
Litrenta Medeiros, Vinicius [UNESP] De Araujo, Leandro Goulart Rubinho Ratero, Davi [UNESP] Silva Paula, Alex [UNESP] Ferreira Molina, Eduardo Jaeger, Christian Marumo, Júlio Takehiro Nery, José Geraldo [UNESP] |
author_role |
author |
author2 |
De Araujo, Leandro Goulart Rubinho Ratero, Davi [UNESP] Silva Paula, Alex [UNESP] Ferreira Molina, Eduardo Jaeger, Christian Marumo, Júlio Takehiro Nery, José Geraldo [UNESP] |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Nuclear and Energy Research Institute (IPEN) University of Franca Division 1.3 Structure Analysis |
dc.contributor.author.fl_str_mv |
Litrenta Medeiros, Vinicius [UNESP] De Araujo, Leandro Goulart Rubinho Ratero, Davi [UNESP] Silva Paula, Alex [UNESP] Ferreira Molina, Eduardo Jaeger, Christian Marumo, Júlio Takehiro Nery, José Geraldo [UNESP] |
dc.subject.por.fl_str_mv |
29Si 89Y MAS-NMR Adsorption Cadmium and lead remediation Chemisorption Yttrium silicates |
topic |
29Si 89Y MAS-NMR Adsorption Cadmium and lead remediation Chemisorption Yttrium silicates |
description |
A new metallosilicate based on yttrium was synthesized and characterized by XRD, FT-IR, 29Si MAS-NMR, and 89Y MAS-NMR. The mixed framework of the material was confirmed by the detection of distinct chemical shift groups using 29Si MAS-NMR (at -82 to -87 ppm, -91 to -94 ppm, -96 to -102 ppm, and -105 to -108 ppm), as well as four distinct chemical shifts in the 89Y MAS-NMR spectrum (at -89, -142, -160, and -220 ppm). Adsorption and kinetic analyses indicated the potential of the new material for the removal of lead and cadmium from aqueous media. The adsorption results for lead indicated that dynamic equilibrium was reached after five hours, with total lead removal of around 94 %, while for cadmium it was reached in the first hour, with total cadmium removal of around 74 %. The adsorptions of lead and cadmium were modeled using pseudo-first order (PFO) and pseudo-second order (PSO) kinetic models. Although both models provided high R2 values (0.9903 and 0.9980, respectively), the PSO model presented a much lower χ2red value (4.41 × 10-4), compared to the PFO model (2.12 × 10-3), which indicated that the rate-limiting step was probably due to the chemisorption of lead from the solution onto the yttrium-based metallosilicate. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T02:50:06Z 2020-12-12T02:50:06Z 2020-08-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.jece.2020.103922 Journal of Environmental Chemical Engineering, v. 8, n. 4, 2020. 2213-3437 http://hdl.handle.net/11449/202111 10.1016/j.jece.2020.103922 2-s2.0-85091044821 |
url |
http://dx.doi.org/10.1016/j.jece.2020.103922 http://hdl.handle.net/11449/202111 |
identifier_str_mv |
Journal of Environmental Chemical Engineering, v. 8, n. 4, 2020. 2213-3437 10.1016/j.jece.2020.103922 2-s2.0-85091044821 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Environmental Chemical Engineering |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1803649862785302528 |