| Revue: | Electronic journal of biotechnology |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000266057 |
| ISSN: | 0717-3458 |
| Autores: | Costa, Antonio Carlos Augusto da1 Tavares, Ana Paula Mora Franca, Francisca Pessoa de |
| Instituciones: | 1Universidade do Estado do Rio de Janeiro, Instituto de Quimica, Maracana, Rio de Janeiro. Brasil |
| Año: | 2001 |
| Periodo: | Dic |
| Volumen: | 4 |
| Número: | 3 |
| Paginación: | 3-4 |
| País: | Chile |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | The biosorption of zinc and calcium was investigated with a biomass of Sargassum sp., a brown seaweed, in a continuous system consisting of three serial tubular fixed-bed laboratory reactors. Results indicated that zinc was efficiently recovered by the biomass. After treatment of 9.0 liters of a mixed solution containing 130.0 mg/l zinc and 260.0 mg/l calcium, the first column of the system saturated with zinc; the remaining columns did not saturate with zinc as a result of the pre treatment performed by the first reactor. Calcium was also efficiently biosorbed by the biomass, saturating the system much faster than zinc. X-ray fluorescence spectrum indicated the presence of various elements in the structure of the Sargassum sp. biomass, especially alkaline and alkaline-earth elements. Alkaline and alkaline earth elements played a key role in the biosorption of zinc, being responsible for ion-exchange reactions performed during zinc biosorption |
| Disciplinas: | Química, Biología |
| Palabras clave: | Bioquímica, Algas, Contaminación, Aguas residuales, Metales pesados, Biomasa, Biosorción, Sargassum |
| Keyword: | Chemistry, Biology, Biochemistry, Algae, Waste water, Heavy metals, Biomass, Biosorption, Sargassum |
| Texte intégral: | Texto completo (Ver HTML) |
