Adsorção de azul de metileno por meio de resíduos de Poincianella pluviosa var. peltophoroides (Benth.) L.P. Queiroz
The textile sector is currently responsible for the emission of pollutants, one of them is the generation of effluents with synthetic dyes, such as methylene blue, which in turn are released to water bodies affecting the local biota. The sibipiruna is commonly used as urban afforestation, its prunin...
| Autor principal: | Teixeira, Iago Rosa Felberg |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/7066 |
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| Resumo: |
The textile sector is currently responsible for the emission of pollutants, one of them is the generation of effluents with synthetic dyes, such as methylene blue, which in turn are released to water bodies affecting the local biota. The sibipiruna is commonly used as urban afforestation, its pruning can be transformed into biosorbs due to its lignocellulosic characteristics, thus adding economic value to this type of solid waste. This paper aims to present the study of the adsorption of methylene blue dye through the biosorbent obtained by pruning sibipiruna. To obtain the biosorbent, the material underwent a heat treatment in which it was transformed into coal. After treatment, Raman and SEM spectroscopy analyzes were performed, as well as kinetic studies and isotherms. Raman spectroscopy showed that charcoal is a nonperfect graphite material and SEM presented its high degree of porosity. The kinetic study showed that the coal has an optimum adsorption time of 240 minutes and a maximum efficiency of 98%. Moreover, the model that best fit the data was the pseudo-second order model. Regarding the isotherm, the data were better adjusted by the Langmuir model, thus representing that the adsorption process is favorable. Moreover, the value presented for the separation factor indicates that the adsorption process evaluated in this work is favorable. Therefore, the use of sibipiruna pruning proved to be efficient and can thus be used as an alternative for treatment of dyescontaminated effluents. |
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