Fast and effective arsenic removal from aqueous solutions by a novel low-cost eggshell byproduct

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorRibeiro, Ivan Célio Andrade-
Autor(es): dc.creatorVasques, Isabela Cristina Filardi-
Autor(es): dc.creatorTeodoro, Jéssica Cristina-
Autor(es): dc.creatorGuerra, Marcelo Braga Bueno-
Autor(es): dc.creatorCarneiro, Jefferson Santanada Silva-
Autor(es): dc.creatorMelo, Leônidas Carrijo Azevedo-
Autor(es): dc.creatorGuilherme, Luiz Roberto Guimarães-
Data de aceite: dc.date.accessioned2026-02-09T11:38:39Z-
Data de disponibilização: dc.date.available2026-02-09T11:38:39Z-
Data de envio: dc.date.issued2022-04-07-
Data de envio: dc.date.issued2022-04-07-
Data de envio: dc.date.issued2021-08-20-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/49697-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0048969721020921-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1144222-
Descrição: dc.descriptionDeveloping alternative green solutions for local and correct recycling of eggshells waste (ES) are needed by the egg-processing industries. In this study, we proposed transforming ES into a novel low-cost chemical compound named hydroxyl-eggshell (ES-OH) and investigated its capacity for arsenic (As) removal from aqueous solutions. Laboratory experiments were conducted to investigate the effects of ES-OH doses, pH, kinetics, and isotherms on As removal efficiency. The kinetics study showed that ES-OH removed nearly all As from solution in less than 15 min. The pseudo-second-order model described the process, and the maximum As removal capacity predicted by the Langmuir isotherm model was 529 mg g−1. Using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy with energy dispersive X-ray detector (SEM-EDS), and X-ray diffraction (XRD), we found that the As removal mechanism by ES-OH was due to vladimirite precipitation, followed by weak electrostatic interactions between the precipitate and arsenate ions. Finally, after an economic analysis, we conclude that besides being a novel and economical income source, egg-producing companies might implement the ES-OH production process as a local environmentally-friendly way of recycling eggshells and reducing water As contamination.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceScience of the Total Environment-
Palavras-chave: dc.subjectWaste valorization-
Palavras-chave: dc.subjectCircular economy-
Palavras-chave: dc.subjectVladimirite-
Palavras-chave: dc.subjectCalcium arsenate-
Título: dc.titleFast and effective arsenic removal from aqueous solutions by a novel low-cost eggshell byproduct-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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