Magnetic activated carbonaceous materials from sugarcane bagasse: Preparation, characterization, and hexavalent chromium removal
The presence of hexavalent chromium (Cr (VI)) in effluents remains a global concern due to its toxic properties. Even though adsorption has been employed for its removal from water, developing sustainable materials with higher adsorption capacities is still pivotal to tackling such contamination. In...
| Autores: | , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2024 |
| País: | Brasil |
| Institución: | Universidade Estadual Paulista (UNESP) |
| Repositorio: | Repositório Institucional da UNESP |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.unesp.br:11449/300542 |
| Acceso en línea: | http://dx.doi.org/10.1016/j.mtsust.2024.101040 https://hdl.handle.net/11449/300542 |
| Access Level: | acceso abierto |
| Palabra clave: | Hexavalent chromium removal Lignocellulosic biomass Magnetic activated carbon Thermochemical activation |
| id |
BR_eaa519623b0594428c1901ccfd474ccf |
|---|---|
| oai_identifier_str |
oai:repositorio.unesp.br:11449/300542 |
| network_acronym_str |
BR |
| network_name_str |
Brasil |
| repository_id_str |
|
| spelling |
Magnetic activated carbonaceous materials from sugarcane bagasse: Preparation, characterization, and hexavalent chromium removalHexavalent chromium removalLignocellulosic biomassMagnetic activated carbonThermochemical activationThe presence of hexavalent chromium (Cr (VI)) in effluents remains a global concern due to its toxic properties. Even though adsorption has been employed for its removal from water, developing sustainable materials with higher adsorption capacities is still pivotal to tackling such contamination. In this study, two magnetic carbons (MC) were produced by hydrothermal carbonization (HTC) of sugarcane bagasse in the presence of iron (III) nitrate at 230 and 270 °C. Both MCs were thermochemically activated at 500 and 700 °C using KOH (1:2; w:w). The materials were characterized in terms of composition, structure, morphology, texture, and surface properties and then evaluated in adsorption studies of Cr (VI). After HTC, some iron phases such as α-Fe2O3, γ-Fe2O3, and Fe3O4 were observed, while thermochemical activation additionally revealed Fe0 and Fe4[Fe(CN)6]3. Activation increased the amount of meso- and macropores, specific surface area, pHzpc, surface hydrophilicity, and carbon and nitrogen contents. The adsorption kinetics study indicated that the pseudo-second-order model describes better the behavior of the materials. The investigation of adsorbent dose showed that doses below 1.00 g L−1 were more efficient in Cr (VI) removal. MC-230 and MC-270 thermochemically activated at 700 °C exhibited the highest Cr (VI) adsorption capacities (10.5 and 15.5 mg g−1, respectively). Therefore, the improved adsorption capacity for Cr (VI) of the materials thermochemically activated at 700 °C was mainly due to their enhanced textural properties.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Universidade Estadual PaulistaFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)São Paulo State University (UNESP) Institute of Biosciences Letters and Exact Sciences (IBILCE) Department of Chemistry and Environmental Sciences (DQCA) Laboratory of Environmental Sciences Studies (LECA), 2265 Cristóvão Colombo St., Jardim Nazareth, SPFederal University of Ceará (UFC) Department of Physics, Mister Hull Avenue, s/n, CEState University of Londrina (UEL) Department of Chemistry Laboratory of Advanced Functional Materials (LaMFA), Celso Garcia Cid Highway, PR 445, km 380, PRSão Paulo State University (UNESP) Institute of Biosciences Letters and Exact Sciences (IBILCE) Department of Chemistry and Environmental Sciences (DQCA) Laboratory of Environmental Sciences Studies (LECA), 2265 Cristóvão Colombo St., Jardim Nazareth, SPFAPESP: 2020/02471-4FAPESP: 2021/08839-6FAPESP: 2021/09126-3FAPESP: 2021/12214-1CNPq: 303232/2022-6CNPq: 310821/2022-3CNPq: 409205/2023-0CAPES: 88882.434479/2019–01Universidade Estadual Paulista (UNESP)Federal University of Ceará (UFC)Universidade Estadual de Londrina (UEL)2025-04-29T18:49:53Z2024-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.mtsust.2024.101040Materials Today Sustainability, v. 28.2589-2347https://hdl.handle.net/11449/30054210.1016/j.mtsust.2024.1010402-s2.0-85208478444Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Today Sustainabilityinfo:eu-repo/semantics/openAccessNogueira, Gabriela A. [UNESP]Fregolente, Laís G.Pereira, Lorena S. [UNESP]Laranja, Márcio J. [UNESP]Moreira, Altair B. [UNESP]Ferreira, Odair P.Bisinoti, Márcia C. [UNESP]2025-04-30T13:37:19Zoai:repositorio.unesp.br:11449/300542Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462025-04-30T13:37:19Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
| dc.title.none.fl_str_mv |
Magnetic activated carbonaceous materials from sugarcane bagasse: Preparation, characterization, and hexavalent chromium removal |
| title |
Magnetic activated carbonaceous materials from sugarcane bagasse: Preparation, characterization, and hexavalent chromium removal |
| spellingShingle |
Magnetic activated carbonaceous materials from sugarcane bagasse: Preparation, characterization, and hexavalent chromium removal Nogueira, Gabriela A. [UNESP] Hexavalent chromium removal Lignocellulosic biomass Magnetic activated carbon Thermochemical activation |
| title_short |
Magnetic activated carbonaceous materials from sugarcane bagasse: Preparation, characterization, and hexavalent chromium removal |
| title_full |
Magnetic activated carbonaceous materials from sugarcane bagasse: Preparation, characterization, and hexavalent chromium removal |
| title_fullStr |
Magnetic activated carbonaceous materials from sugarcane bagasse: Preparation, characterization, and hexavalent chromium removal |
| title_full_unstemmed |
Magnetic activated carbonaceous materials from sugarcane bagasse: Preparation, characterization, and hexavalent chromium removal |
| title_sort |
Magnetic activated carbonaceous materials from sugarcane bagasse: Preparation, characterization, and hexavalent chromium removal |
| dc.creator.none.fl_str_mv |
Nogueira, Gabriela A. [UNESP] Fregolente, Laís G. Pereira, Lorena S. [UNESP] Laranja, Márcio J. [UNESP] Moreira, Altair B. [UNESP] Ferreira, Odair P. Bisinoti, Márcia C. [UNESP] |
| author |
Nogueira, Gabriela A. [UNESP] |
| author_facet |
Nogueira, Gabriela A. [UNESP] Fregolente, Laís G. Pereira, Lorena S. [UNESP] Laranja, Márcio J. [UNESP] Moreira, Altair B. [UNESP] Ferreira, Odair P. Bisinoti, Márcia C. [UNESP] |
| author_role |
author |
| author2 |
Fregolente, Laís G. Pereira, Lorena S. [UNESP] Laranja, Márcio J. [UNESP] Moreira, Altair B. [UNESP] Ferreira, Odair P. Bisinoti, Márcia C. [UNESP] |
| author2_role |
author author author author author author |
| dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Federal University of Ceará (UFC) Universidade Estadual de Londrina (UEL) |
| dc.subject.por.fl_str_mv |
Hexavalent chromium removal Lignocellulosic biomass Magnetic activated carbon Thermochemical activation |
| topic |
Hexavalent chromium removal Lignocellulosic biomass Magnetic activated carbon Thermochemical activation |
| description |
The presence of hexavalent chromium (Cr (VI)) in effluents remains a global concern due to its toxic properties. Even though adsorption has been employed for its removal from water, developing sustainable materials with higher adsorption capacities is still pivotal to tackling such contamination. In this study, two magnetic carbons (MC) were produced by hydrothermal carbonization (HTC) of sugarcane bagasse in the presence of iron (III) nitrate at 230 and 270 °C. Both MCs were thermochemically activated at 500 and 700 °C using KOH (1:2; w:w). The materials were characterized in terms of composition, structure, morphology, texture, and surface properties and then evaluated in adsorption studies of Cr (VI). After HTC, some iron phases such as α-Fe2O3, γ-Fe2O3, and Fe3O4 were observed, while thermochemical activation additionally revealed Fe0 and Fe4[Fe(CN)6]3. Activation increased the amount of meso- and macropores, specific surface area, pHzpc, surface hydrophilicity, and carbon and nitrogen contents. The adsorption kinetics study indicated that the pseudo-second-order model describes better the behavior of the materials. The investigation of adsorbent dose showed that doses below 1.00 g L−1 were more efficient in Cr (VI) removal. MC-230 and MC-270 thermochemically activated at 700 °C exhibited the highest Cr (VI) adsorption capacities (10.5 and 15.5 mg g−1, respectively). Therefore, the improved adsorption capacity for Cr (VI) of the materials thermochemically activated at 700 °C was mainly due to their enhanced textural properties. |
| publishDate |
2024 |
| dc.date.none.fl_str_mv |
2024-12-01 2025-04-29T18:49:53Z |
| 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.mtsust.2024.101040 Materials Today Sustainability, v. 28. 2589-2347 https://hdl.handle.net/11449/300542 10.1016/j.mtsust.2024.101040 2-s2.0-85208478444 |
| url |
http://dx.doi.org/10.1016/j.mtsust.2024.101040 https://hdl.handle.net/11449/300542 |
| identifier_str_mv |
Materials Today Sustainability, v. 28. 2589-2347 10.1016/j.mtsust.2024.101040 2-s2.0-85208478444 |
| dc.language.iso.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
Materials Today Sustainability |
| 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 |
repositoriounesp@unesp.br |
| _version_ |
1853672447096651776 |
| score |
15,300719 |