Potencial de aproveitamento da semente de maracujá na tecnologia de tratamento de efluentes através da técnica de adsorção e floculação iônica
The using agro-industrial waste has motivated many studies and applications, since from these materials components can be obtained with peculiar characteristics which can be used for different purposes. These bioproducts are available raw materials, generally of low cost and their use reduces the en...
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| Formato: | bachelorThesis |
| Idioma: | pt_BR |
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Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/38741 |
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| Resumo: | The using agro-industrial waste has motivated many studies and applications, since from these materials components can be obtained with peculiar characteristics which can be used for different purposes. These bioproducts are available raw materials, generally of low cost and their use reduces the environmental impact generated by their disposal. In this context, the present study investigates the potential of using passion fruit seeds to remove organic and inorganic contaminants using two techniques: adsorption and ionic flocculation. The adsorption technology, in comparison with other separation processes, offers a more efficient way of removing pollutants. The development of appropriate adsorbents can potentially reduce the cost associated with removing a particular component. In this respect, the removal efficiency of the methylene blue dye using the passion fruit seed as a bioabsorbent was evaluated, given its economic value that is more accessible than activated carbon, which is the most widely used adsorbent today. The methodology consisted of using a fixed mass of 0.3 g of the seed in natura in 15mL of solution of the dye of Methylene Blue of concentration 200mg / L. In the initial adsorption tests, the seed in natura reached a 35% dye removal percentage. To increase this removal efficiency, impregnation tests were performed on the passion fruit seed, using six types of anionic surfactants, with different concentrations and chain size. In this way, a favorable condition of surfactant impregnation in the bioadsorber was obtained, which allowed reaching a percentage of dye removal in 63%. The second study on the use of agroindustrial waste consisted of extracting the oil from the passion fruit seed and later saponifying it, obtaining a soap with flocculating properties, which was used to remove the Cu+ 2 ion. In this study, therefore, a bioadsorber for removing methylene blue dye and a biofloculant for removing Cu+ 2 ions from aqueous solution were obtained from the passion fruit seed. |
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