Use este identificador para citar ou linkar para este item:
http://www.repositorio.ufop.br/jspui/handle/123456789/9962
Título: | Trimellitated sugarcane bagasse : a versatile adsorbent for removal of cationic dyes from aqueous solution. Part I : batch adsorption in a monocomponent system. |
Autor(es): | 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 |
Palavras-chave: | Sugarcane bagasse Auramine-O Adsorption |
Data do documento: | 2018 |
Referência: | 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. |
Resumo: | 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 |
Link para o artigo: | https://www.sciencedirect.com/science/article/pii/S0021979718300341 |
ISSN: | 00219797 |
Aparece nas coleções: | DEQUI - Artigos publicados em periódicos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
---|---|---|---|---|
ARTIGO_TrimellitatedSugarcaneBagace.pdf Restricted Access | 3,24 MB | Adobe PDF | Visualizar/Abrir |
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.