| Revue: | Quimica nova |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000313257 |
| ISSN: | 0100-4042 |
| Autores: | Della, Viviana Possamai1 Hotza, Dachamir Junkes, Janaina Accordi2 Oliveira, Antonio Pedro Novaes de |
| Instituciones: | 1Universidade Federal de Santa Catarina, Departamento de Engenharia Quimica e Engenharia de Alimentos, Florianopolis, Santa Catarina. Brasil 2Universidade Federal de Santa Catarina, Departamento de Engenharia Mecanica, Florianopolis, Santa Catarina. Brasil |
| Año: | 2006 |
| Periodo: | Nov |
| Volumen: | 29 |
| Número: | 6 |
| Paginación: | 1175-1179 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | A comparison between silica by acid leaching of rice husk (RH) and silica obtained from thermal treatment of rice husk ash (RHA) is presented. The best leaching results were obtained using 10% hydrochloric acid followed by washing with water. The alternative method, calcination of RHA at 700 ºC for 6 h followed by grinding for 80 min, was more effective. Silica obtained from RH was about 97% amorphous, had a 17.37 µm mean particle size, and a specific surface area of 296 m²/g. On the other hand, for silica obtained from RHA the values were about 95% amorphous material 0.68 µm, and 81 m²/g |
| Disciplinas: | Química |
| Palabras clave: | Ingeniería química, Sílica, Cáscara de arroz, Lavado ácido |
| Keyword: | Chemistry, Chemical engineering, Silica, Rice husk, Acid leaching |
| Texte intégral: | Texto completo (Ver HTML) |
