Use of sugarcane bagasse in natura to removal remazol red dye

• Autor(a) principal: Anizelli, Pedro Renato
• Data de Publicação: 2021
• Outros Autores: Pinto, Victor Lorejan, Abreu, Marcela Breves
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Caderno de Ciências Agrárias (Online)
• Texto Completo: https://periodicos.ufmg.br/index.php/ccaufmg/article/view/35603
• topic: Adsorption; Biomass; Synthetic dye; Adsorção; Biomassa; Corante sintético

In the present article, the feasibility of sugarcane bagasse for the treatment of a synthetic solution of Remazol Vermelho was investigated. For this, a 2² factorial design was performed by varying the pH and mass of the biosorbent in response to the adsorption efficiency, and it was verified that the best adsorption conditions are in acidic pH and lower material mass values. The characterization of the biosorbent was carried out by the pH of the point of zero charge point (PZC), where it was observed that the value was close to 6.00. Infrared spectroscopy (FTIR) data showed the presence of characteristic groups of organic matter and scanning electron microscopy (SEM) showed that the material surface is irregular and porous. A kinetic study was carried out to determine the adsorption mechanism, where the experimental data fit the pseudo-second order model, which indicates that the adsorption occurs by chemosorption. The decontamination percentage reached the value of 72.44% (9.08 ± 0.008 mg g-1) in 30 minutes. In the isotherm study, the experimental data fit the Freundlich model, which indicates a heterogeneous surface. The fixed bed results showed values of 40.63% removal efficiency and 71.38% of column saturation. Therefore, the sugarcane bagasse showed good adsorption capacity for the dye Remazol Vermelho.