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

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dc.creatorJúlia Condé Vieira
dc.creatorMariana Cristine Coelho Diniz
dc.creatorLouise Aparecida Mendes
dc.creatorRubén Dario Sinisterra Millán
dc.creatorGuilherme Dias Rodrigues
dc.creatorRicardo Mathias Orlando
dc.creatorCláudia Carvalhinho Windmöller
dc.date.accessioned2023-11-22T15:47:44Z
dc.date.accessioned2025-09-08T22:49:38Z
dc.date.available2023-11-22T15:47:44Z
dc.date.issued2021-05
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.identifier.doihttps://doi.org/10.1016/j.enmm.2020.100407
dc.identifier.issn2215-1532
dc.identifier.urihttps://hdl.handle.net/1843/61253
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofEnvironmental Nanotechnology, Monitoring & Management
dc.rightsAcesso Restrito
dc.subjectQuímica analítica
dc.subjectQuimica ambiental
dc.subjectSorventes
dc.subjectAdsorção
dc.subjectMercúrio
dc.subjectMetais pesados
dc.subjectCarotenoides
dc.subjectUrucuzeiro
dc.subjectBiomoléculas
dc.subject.otherAdsorption
dc.subject.otherApocarotenoids
dc.subject.otherBiosorption
dc.subject.otherHeavy metals
dc.subject.otherMercury
dc.subject.otherMetal removal
dc.titleBixin as a new class of biosorbent for Hg²+ removal from aqueous solutions
dc.typeArtigo de periódico
local.citation.volume15
local.description.resumoIn 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 characterised 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 analysed, 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.
local.identifier.orcidhttps://orcid.org/0000-0003-1261-060X
local.identifier.orcidhttps://orcid.org/0009-0001-2939-1362
local.identifier.orcidhttps://orcid.org/0000-0001-7656-1849
local.identifier.orcidhttps://orcid.org/0000-0002-3862-1211
local.identifier.orcidhttps://orcid.org/0000-0001-8843-7220
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S2215153220303901

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