RECOVERY OF COPPER, ZINC AND LEAD FROM LIQUID STREAMS BY CHELATING ION-EXCHANGE RESINS

• Tipo: Artigo em Revista Científica Internacional
• Data: 1988

Autores

José Miguel Loureiro (Autor) FEUP; Carlos Costa (Autor) FEUP; Alírio Rodrigues (Autor) FEUP

Revista

Título: Chemical Engineering Science

Vol. 43 Nº 7

Páginas: 1115-1123

ISSN: 0009-2509

Editora: Elsevier

Indexação

ISI Web of Knowledge - 17 Citações

Scopus - 11 Citações

Outras Informações

ID Authenticus: P-001-TMA

DOI: 10.1016/0009-2509(88)85071-1

Abstract (EN): The recovery of copper, zinc and lead from liquid streams by using a chelating resin with amidoxime groups (Duolite ES 346, Rhom and Haas) was studied at room temperature. Equilibrium ion exchange isotherms were measured in batch systems; copper is the preferred species followed by lead and zinc. Kinetic experiments were carried out in CSTR in order to get effective diffusivities of copper, zinc and lead inside the resin, leading to 1.13 × 10-6 cm2/s, 1.60 × 10-6 cm2/s and 1.86 × 10-6 cm2/s, respectively. Finally fixed-bed operation was studied. Experimental breakthrough curves were reasonably predicted by a model which includes axial dispersion for the fluid phase, film mass transfer and pore diffusion. Model parameters were determined by independent experiments (equilibrium parameters, effective diffusivities, axial dispersion) or estimated from literature correlations (film mass transfer). Model equations were solved by using orthogonal collocation in finite elements methods. © 1988.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9