| Revista: | Brazilian journal of chemical engineering |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000308899 |
| ISSN: | 0104-6632 |
| Autors: | Amorim, W.B1 Hayashi, A.M Pimentel, P.F2 Silva, M.G.C.da |
| Institucions: | 1Universidade Estadual de Campinas, Faculdade de Engenharia Quimica, Campinas, Sao Paulo. Brasil 2Fundacao Centro Tecnologico de Minas Gerais, Departamento de Tecnologia Quimica e Biotecnologia, Belo Horizonte, Minas Gerais. Brasil |
| Any: | 2003 |
| Període: | Sep |
| Volum: | 20 |
| Número: | 3 |
| Paginació: | 283-289 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | In this work the process of desorption of hexavalent chromium, a toxic metal ion, from the marine algae Sargassum sp, following biosorption experiments 2³ factorial design was studied. A technique was applied to three eluents: HCl, H2SO4 and EDTA. Three factors of importance were evaluated: concentration of eluent, the ratio between mass of biosorbent and volume of eluent (S/L) and process time. A statistical analysis of the experimental results showed that the three variables evaluated are significant for all three eluents. The models for chromium desorption were validated, as the results agreed well with the observed values. Through use of the response surface methodology, a factorial design based optimization technique; it was possible to identify the most suitable eluent and the interval of values for the process variables that resulted in the most significant desorption of chromium, which is relevant information for work aiming at process optimization |
| Disciplines | Biología, Química |
| Paraules clau: | Algas, Contaminación marina, Cromo hexavalente, Desorción, Algas marinas, Sargassum |
| Keyword: | Biology, Chemistry, Algae, Marine pollution, Hexavalent chromium, Desorption, Marine algae, Sargassum |
| Text complet: | Texto completo (Ver HTML) |
