| Revista: | Brazilian journal of chemical engineering |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000308858 |
| ISSN: | 0104-6632 |
| Autors: | Silva, E.A1 Cossich, E.S2 Tavares, C.G Cardozo-Filho, L Guirardello, R3 |
| Institucions: | 1Universidade Estadual do Oeste do Parana, Faculdade de Engenharia Quimica, Toledo, Parana. Brasil 2Universidade Estadual de Maringa, Departamento de Engenharia Quimica, Maringa, Parana. Brasil 3Universidade Estadual de Campinas, Faculdade de Engenharia Quimica, Campinas, Sao Paulo. Brasil |
| Any: | 2003 |
| Període: | Sep |
| Volum: | 20 |
| Número: | N |
| Paginació: | 213-227 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | The adsorption of two metal ions, Cr(III) and Cu(II), in single-component and binary systems by Sargassum sp., a brown alga, was studied. Equilibrium batch sorption studies were carried out at 30ºC and pH 3.5. Kinetic tests were done for a binary mixture (chromium + copper) for a contact time of 72 hours to guarantee that equilibrium was reached. The monocomponent equilibrium data obtained were analyzed using the Langmuir and Freundlich isotherms. The binary equilibrium data obtained were described using four Langmuir-type and Freundlich isotherms. The F-test showed a statistically significant fit for all binary isotherm models. The parameters for isotherms of the Langmuir-type were used to determine the affinity of one metal for the biosorbent in the presence of another metal. The chromium ion showed a greater affinity for Sargassum sp. than the copper ion |
| Disciplines | Biología, Ingeniería |
| Paraules clau: | Algas, Ingeniería ambiental, Biotecnología, Biosorción, Cromo, Cobre, Isotermas, Sargassum |
| Keyword: | Biology, Engineering, Algae, Environmental engineering, Biotechnology, Biosorption, Chromium, Copper, Isotherms, Sargassum |
| Text complet: | Texto completo (Ver HTML) |
