| Revista: | Brazilian journal of chemical engineering |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000308780 |
| ISSN: | 0104-6632 |
| Autors: | Biscaia-Junior, E.C1 Mansur, M.B2 Salum, A Castro, R.M.Z |
| Institucions: | 1Universidade Federal do Rio de Janeiro, Instituto Alberto Luiz Coimbra de Pos-Graduacao e Pesquisa de Engenharia, Rio de Janeiro. Brasil 2Universidade Federal de Minas Gerais, Departamento de Engenharia Quimica, Belo Horizonte, Minas Gerais. Brasil |
| Any: | 2001 |
| Període: | Jun |
| Volum: | 18 |
| Número: | 2 |
| Paginació: | 163-174 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | A dynamic kinetic-diffusive model for the extraction of metallic ions from aqueous liquors using liquid surfactant membranes is proposed. The model incorporates undesirable intrinsic phenomena such as swelling and breakage of the emulsion globules that have to be controlled during process operation. These phenomena change the spatial location of the chemical reaction during the course of extraction, resulting in a transient moving boundary problem. The orthogonal collocation method was used to transform the partial differential equations into an ordinary differential equation set that was solved by an implicit numerical routine. The model was found to be numerically stable and reliable in predicting the behaviour of zinc extraction with acidic extractant for long residence times |
| Disciplines | Química |
| Paraules clau: | Ingeniería química, Membranas surfactantes líquidas, Frontera móvil, Extracción de metales, Modelado dinámico |
| Keyword: | Chemistry, Chemical engineering, Liquid surfactant membranes, Moving boundary, Metal extraction, Dynamic modelling |
| Text complet: | Texto completo (Ver HTML) |
