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dc.contributor.authorFerreira, Bruno Christiano Silva-
dc.contributor.authorTeodoro, Filipe Simões-
dc.contributor.authorMageste, Aparecida Barbosa-
dc.contributor.authorGil, Laurent Frédéric-
dc.contributor.authorFreitas, Rossimiriam Pereira de-
dc.contributor.authorGurgel, Leandro Vinícius Alves-
dc.identifier.citationFERREIRA, B. C. S. F. et al. Application of a new carboxylate-functionalized sugarcane bagasse for adsorptive removal of crystal violet from aqueous solution: kinetic, equilibrium and thermodynamic studies. Industrial Crops and Products, v. 65, p. 521-534, 2015. Disponível em: <>. Acesso em: 15 out. 2015.pt_BR
dc.description.abstractA new carboxylate-functionalized sugarcane bagasse (SMA) was prepared via a solvent-free procedure involving esterification of sugarcane bagasse with Meldrum’s acid. The optimized conditions provided SMA with a percent weight gain of 86.0% and 4.69±0.20 mmol/g of carboxylic acid groups. SMA was characterized by FTIR, TGA, elemental analysis and SEM. Kinetic experiments showed that the amount of crystal violet adsorbed increased with increasing temperature and equilibrium was reached at 12 h. Adsorption kinetics followed a pseudo-second-order model. The Arrhenius and Eyring models were used to obtain the activation energy and changes in free energy, enthalpy, and entropy of activation for the adsorption process. The calculated activation energy (14.14 kJ/mol) suggested physical adsorption of CV onto SMA. The equilibrium data were well fitted to the Langmuir and Sips isotherms. Maximum adsorption capacity was 692.1 mg/g at 45 ◦C. Thermodynamic parameters such as changes in free energy, enthalpy and entropy were also determined.pt_BR
dc.subjectSugarcane bagassept_BR
dc.subjectCrystal violetpt_BR
dc.subjectMeldrum's acidpt_BR
dc.titleApplication of a new carboxylate-functionalized sugarcane bagasse for adsorptive removal of crystal violet from aqueous solution : kinetic, equilibrium and thermodynamic studies.pt_BR
dc.typeArtigo publicado em periodicopt_BR
dc.rights.licenseO periódico Industrial Crops and Products concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3734740524733.pt_BR
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