Uptake of copper and cobalt in a complexing resin: Shrinking-core model with two reaction fronts

• Tipo: Artigo em Revista Científica Internacional
• Data: 1998

Autores

Arevalo, E (Autor) Outra; Rendueles, M (Autor) Outra; Fernandez, A (Autor) Outra; Alírio Rodrigues (Autor) FEUP; Diaz, M (Autor) Outra

Revista

Título: Separation and Purification Technology

Vol. 13 Nº 3

Páginas: 37-46

ISSN: 1383-5866

Editora: Elsevier

Indexação

ISI Web of Science

Scopus - 20 Citações

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Outras Informações

ID Authenticus: P-007-8AX

DOI: 10.1016/s1383-5866(97)00054-3

Abstract (EN): The kinetics of simultaneous ion exchange of copper and cobalt with iminodiacetic chelating resins has been studied. Microscopic studies of the ion-exchange process clearly show two different reaction fronts allowing the use of shrinking-core type models. The influence of system parameters is studied both theoretically and experimentally. Experimental results obtained at different total ion concentrations for various copper-cobalt ratios and particle diameters are reasonably predicted by the shrinking-core model, allowing diffusivity calculations.The kinetics of simultaneous ion exchange of copper and cobalt with iminodiacetic chelating resins has been studied. Microscopic studies of the ion-exchange process clearly show two different reaction fronts allowing the use of shrinking-core type models. The influence of system parameters is studied both theoretically and experimentally. Experimental results obtained at different total ion concentrations for various copper-cobalt ratios and particle diameters are reasonably predicted by the shrinking-core model, allowing diffusivity calculations.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10