Estudo de adsorção de corantes têxteis em resíduos de maracujá
Recently with the industrial growth the use of dyes has increased significantly, with this we have a great increase in the volume of contaminated effluents, that if they are disposed of incoherently in the environment, can cause great environmental problems. One of the main industries that use the d...
| Autor principal: | Castro, Matheus Campos de |
|---|---|
| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
|
| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/5521 |
| Tags: |
Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
|
| Resumo: |
Recently with the industrial growth the use of dyes has increased significantly, with this we have a great increase in the volume of contaminated effluents, that if they are disposed of incoherently in the environment, can cause great environmental problems. One of the main industries that use the dyes are the textile industries, so these industries have to carry out an appropriate treatment for the removal of these dyes. In the same way, the industries of passion fruit juice have generated large volumes of waste in their production, these residues are the seeds and the shells of the passion fruit. Thus, the present work intends to demonstrate that residues, which have low commercial value, such as passion fruit residue, can be used as adsorbents for the treatment of effluents contaminated with dyes. The objective of the work was to evaluate the passion fruit residue as an alternative adsorbent of the red dye Quimacryl GRL and Nylosan blue N-BLN, test the effect of the ionic strength and pH of the solution, and also perform the desorption process. The adsorption studies were performed in a fixed bed column system using fresh passion fruit residues and submitted to chemical treatments with NaOH and HCl. The adsorption affinity is increased with the chemical treatment, the acid treatment increased the adsorption efficiency of both the biomasses for the blue dye (anionic), and the basic treatment for the red (cationic) dye, but the greater interaction happened with the red dye, in which the adsorbents presented higher adsorption capacity. The effect of the ionic force favored the adsorption to the red dye, already to the blue had little influence. The pH factor in both dyes influenced the adsorption process, and for the blue dye the best pH value was equal to two and for the red dye equal to tweelve. The desorption process was possible to happen, using as a solution extractor HCl for the red dye and NaOH for the blue dye. The biomass that presented the highest adsorptive capacity was the treated NaOH barks for the red dye which had a value of 45.9 mg g-1. |
|---|