Quartz fine particle processing : hydrophobic aggregation by shear flocculation.

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorNogueira, Francielle Câmara-
Autor(es): dc.creatorRodrigues, Karine Fernandes-
Autor(es): dc.creatorPereira, Carlos Alberto-
Autor(es): dc.creatorSilva, André Carlos-
Autor(es): dc.creatorSilva, Elenice Maria Schons-
Autor(es): dc.creatorAzizi, Asghar-
Autor(es): dc.creatorHassanzadeh, Ahmad-
Data de aceite: dc.date.accessioned2025-08-21T15:45:34Z-
Data de disponibilização: dc.date.available2025-08-21T15:45:34Z-
Data de envio: dc.date.issued2024-10-03-
Data de envio: dc.date.issued2024-10-03-
Data de envio: dc.date.issued2022-
Fonte completa do material: dc.identifierhttps://www.repositorio.ufop.br/handle/123456789/18744-
Fonte completa do material: dc.identifierhttps://doi.org/10.3390/min13091208-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1023438-
Descrição: dc.descriptionThis study investigates the hydrophobic aggregation of fine quartz particles through shear flocculation induced by dodecylamine in aqueous solutions. The effect of stirring speed, collector concentration, flocculation time, and pH were investigated. The results showed that the impact of stirring speed on particle aggregation in the absence of a collector is very limited. Quantitative analyses demonstrated that the variation of collector concentration intensified the flocculation process more than the stirring rate. Numerical optimization showed that the large volume occupied by the flocs was 12.3 mL, achieved with a stirring speed of 2135 rpm and dodecylamine concentration of 1.39 × 10−2 mol·L −1. The highest quartz particle aggregation was observed at pH 10.5, corroborating the importance of the non-dissociated amine molecules for particle hydrophobization. High zeta potential values did not result in reducing aggregation, indicating that hydrophobicity was the governing factor in the shear flocculation process.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsaberto-
Direitos: dc.rightsThis article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). Fonte: PDF do artigo.-
Palavras-chave: dc.subjectShear flocculation-
Palavras-chave: dc.subjectFine quartz particles-
Palavras-chave: dc.subjectHydrophobic aggregation-
Palavras-chave: dc.subjectDodecylamine-
Título: dc.titleQuartz fine particle processing : hydrophobic aggregation by shear flocculation.-
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