Bixin as a new class of biosorbent for Hg2+ removal from aqueous solutions.

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorVieira, Júlia Condé-
Autor(es): dc.creatorDiniz, Mariana Cristine Coelho-
Autor(es): dc.creatorMendes, Louise Aparecida-
Autor(es): dc.creatorSinisterra Millán, Ruben Dario-
Autor(es): dc.creatorRodrigues, Guilherme Dias-
Autor(es): dc.creatorOrlando, Ricardo Mathias-
Autor(es): dc.creatorWindmoller, Cláudia Carvalhinho-
Data de aceite: dc.date.accessioned2025-08-21T15:46:54Z-
Data de disponibilização: dc.date.available2025-08-21T15:46:54Z-
Data de envio: dc.date.issued2023-05-23-
Data de envio: dc.date.issued2023-05-23-
Data de envio: dc.date.issued2020-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/jspui/handle/123456789/16642-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S2215153220303901?via%3Dihub-
Fonte completa do material: dc.identifierhttps://doi.org/10.1016/j.enmm.2020.100407-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1023937-
Descrição: dc.descriptionIn this study, the apocarotenoid bixin was investigated as a potential biosorbent for Hg2+ in aqueous solutions. Bixin was used to form a thin film on an inert support using the drop-coating technique. This film was char- acterised using ATR-FTIR, SEM, and TGA-DTG techniques. Parameters that influence adsorption, such as pH, temperature, NaCl concentration, salt type, bixin mass, and supports for the bixin film, were evaluated. Using 0.112 mg of a bixin covering on a cellulose filter, the sorbent material was able to remove 75 % of Hg2+ from a 2.0 mL, 0.3 mg g− 1 , pH 6.00, 25 ◦C solution after 180 min of contact. Kinetics studies were carried out between 5 and 1440 min, and the pseudo-first-order adsorption model was applied. Equilibrium isotherm data were ana- lysed, and the best fit was for the non-linear Freundlich model, with an R2 of 0.9868, RMSE of 0.37, and maximum sorption capacity of 85.38 mg g− 1 obtained by the Langmuir model. The bixin film was applied in spiked environmental samples (lake and mining effluent), and it achieved 86 % Hg2+ removal. The results show that the bixin film is a suitable alternative for efficiently removing mercury from various aqueous systems. This introduces a new class of biosorbent based on apocarotenoids, which are sustainable, low cost, nontoxic, and easily obtainable.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsrestrito-
Palavras-chave: dc.subjectAdsorption-
Palavras-chave: dc.subjectApocarotenoids-
Palavras-chave: dc.subjectBiosorption-
Palavras-chave: dc.subjectHeavy metals-
Palavras-chave: dc.subjectMercury-
Título: dc.titleBixin as a new class of biosorbent for Hg2+ removal from aqueous solutions.-
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