Modeling adsorption of copper(II), cobalt(II) and nickel(II) metal ions from aqueous solution onto a new carboxylated sugarcane bagasse. Part II : Optimization of monocomponent fixed-bed column adsorption.

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorXavier, Amália Luísa Pedrosa-
Autor(es): dc.creatorHerrera Adarme, Oscar Fernando-
Autor(es): dc.creatorFurtado, Laís Milagres-
Autor(es): dc.creatorFerreira, Gabriel Max Dias-
Autor(es): dc.creatorSilva, Luis Henrique Mendes da-
Autor(es): dc.creatorGil, Laurent Frédéric-
Autor(es): dc.creatorGurgel, Leandro Vinícius Alves-
Data de aceite: dc.date.accessioned2025-08-21T15:57:07Z-
Data de disponibilização: dc.date.available2025-08-21T15:57:07Z-
Data de envio: dc.date.issued2018-05-21-
Data de envio: dc.date.issued2018-05-21-
Data de envio: dc.date.issued2018-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/9961-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0021979718300833?via%3Dihub-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1028373-
Descrição: dc.descriptionIn the second part of this series of studies, the monocomponent adsorption of Cu2+, Co2+ and Ni2+ onto STA adsorbent in a fixed-bed column was investigated and optimized using a 22 central composite design. The process variables studied were: initial metal ion concentration and spatial time, and the optimized responses were: adsorption capacity of the bed (Qmax), efficiency of the adsorption process (EAP), and effective use of the bed (H). The higher Qmax for Cu2+, Co2+ and Ni2+ were 1.060, 0.800 and 1.029 mmol/g, respectively. The breakthrough curves were modeled by the original Thomas and Bohart- Adams models. The changes in enthalpy (DadsH ) of adsorption of the metal ions onto STA were determined by isothermal titration calorimetry (ITC). The values of DadsH were in the range of 3.0–6.8 kJ/mol, suggesting that the adsorption process involved physisorption. Desorption (Edes) and readsorption (Ere-ads) of metal ions from the STA adsorbent were also investigated in batch mode, and the optimum conditions were applied for three cycles of adsorption/desorption in a fixed bed column. For these cycles, the lowest values of Edes and Ere-ads were 95 and 92.3%, respectively, showing that STA is a promising candidate for real applications on a large scale.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsrestrito-
Palavras-chave: dc.subjectFixed-bed adsorption-
Palavras-chave: dc.subjectModeling-
Palavras-chave: dc.subjectMetal ion-
Palavras-chave: dc.subjectDesign of experiments-
Título: dc.titleModeling adsorption of copper(II), cobalt(II) and nickel(II) metal ions from aqueous solution onto a new carboxylated sugarcane bagasse. Part II : Optimization of monocomponent fixed-bed column adsorption.-
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