Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/9962
Title: Trimellitated sugarcane bagasse : a versatile adsorbent for removal of cationic dyes from aqueous solution. Part I : batch adsorption in a monocomponent system.
Authors: Fideles, Renata Aparecida
Ferreira, Gabriel Max Dias
Teodoro, Filipe Simões
Herrera Adarme, Oscar Fernando
Silva, Luis Henrique Mendes da
Gil, Laurent Frédéric
Gurgel, Leandro Vinícius Alves
Keywords: Sugarcane bagasse
Auramine-O
Adsorption
Issue Date: 2018
Citation: FIDELES, R. A. et al. Trimellitated sugarcane bagasse : a versatile adsorbent for removal of cationic dyes from aqueous solution. Part I : batch adsorption in a monocomponent system. Journal of Colloid and Interface Science, v. 515, p. 172-188, 2018. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0021979718300341>. Acesso em: 05 abr. 2018.
Abstract: Trimellitated-sugarcane bagasse (STA) was used as an environmentally friendly adsorbent for removal of the basic dyes auramine-O (AO) and safranin-T (ST) from aqueous solutions at pH 4.5 and 7.0. Dye adsorption was evaluated as a function of STA dosage, agitation speed, solution pH, contact time, and initial dye concentration. Pseudo-first- and pseudo-second-order, Elovich, intraparticle diffusion, and Boyd models were used to model adsorption kinetics. Langmuir, Dubinin-Radushkevich, Redlich-Peterson, Sips, Hill-de Boer, and Fowler-Guggenheim models were used to model adsorption isotherms, while a Scatchard plot was used to evaluate the existence of different adsorption sites. Maximum adsorption capacities for removal of AO and ST were 1.005 and 0.638 mmol g 1 at pH 4.5, and 1.734 and 1.230 mmol g 1 at pH 7.0, respectively. Adsorption enthalpy changes obtained by isothermal titration energy and entropy of adsorption were calculated. These thermodynamic parameters were also used to evaluate the adsorption mechanism at both pH values.
URI: http://www.repositorio.ufop.br/handle/123456789/9962
metadata.dc.identifier.uri2: https://www.sciencedirect.com/science/article/pii/S0021979718300341
ISSN: 00219797
Appears in Collections:DEQUI - Artigos publicados em periódicos

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