Heating rate effect on the sorptive properties of biochars from NaOH-modified sugarcane bagasse residues.

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorSouza, T. F.-
Autor(es): dc.creatorLouzada, L. N.-
Autor(es): dc.creatorMartinho, Felipe da Silva-
Autor(es): dc.creatorFerreira, Gabriel Max Dias-
Autor(es): dc.creatorFerreira, Guilherme Max Dias-
Data de aceite: dc.date.accessioned2025-08-21T16:00:37Z-
Data de disponibilização: dc.date.available2025-08-21T16:00:37Z-
Data de envio: dc.date.issued2025-03-19-
Data de envio: dc.date.issued2023-
Fonte completa do material: dc.identifierhttps://www.repositorio.ufop.br/handle/123456789/19980-
Fonte completa do material: dc.identifierhttps://link.springer.com/article/10.1007/s13762-024-06157-8-
Fonte completa do material: dc.identifierhttps://doi.org/10.1007/s13762-024-06157-8-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1029896-
Descrição: dc.descriptionThe modifcation of the operational parameters of pyrolysis, such as the heating rate (HR), to produce adsorbent biochar (BC) has been little explored, especially regarding materials obtained from premodifed biomass. Consequently, some fundamental aspects in this feld remain not understood, which can limit more targeted syntheses of these materials in environmental application. This study investigated the efect of HR on the pyrolysis of sugarcane bagasse premodifed with NaOH. BC was produced in a mufe furnace with HR of 5, 10, 15, or 20 °C min−1, at fnal temperature of 400 °C, and characterized by FTIR, N2 adsorption, SEM, EDS, conductometric titration, and determination of the point of zero charge. The methylene blue (MB) adsorption kinetics and equilibria on the produced materials were studied to elucidate the infuence of HR on the adsorption. The results showed that the surface chemistry and physical properties of the materials were not infuenced by diferent HR. However, equilibrium times for MB adsorption of 10 and 5 h were observed for HR of 5 and 10 °C min−1, respectively, while an equilibrium time greater than 48 h was observed for the highest HR; MB intraparticle difusion played an important role in these diferent behaviors. The adsorption isotherms were better ft by the Konda model. The ftted parameters suggested that the distribution of sites within pores of diferent sizes was also determined by the HR. The results showed that the use of MB can help identify structural changes induced by pyrolysis parameters that have a minor efect on the properties of adsorbent BC, such as HR.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsrestrito-
Palavras-chave: dc.subjectBiomass-
Palavras-chave: dc.subjectBiochar-
Palavras-chave: dc.subjectBasic modifcation-
Palavras-chave: dc.subjectDye-
Título: dc.titleHeating rate effect on the sorptive properties of biochars from NaOH-modified sugarcane bagasse residues.-
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