| Journal: | Brazilian journal of chemical engineering |
| Database: | PERIÓDICA |
| System number: | 000308784 |
| ISSN: | 0104-6632 |
| Authors: | Rodrigues, R.C.L.B1 Felipe, M.G.A Silva, J.B. Almeida e Vitolo, M2 Gómez, P.V3 |
| Institutions: | 1Faculdade de Engenharia Quimica de Lorena, Departamento de Biotecnologia, Lorena, Sao Paulo. Brasil 2Universidade de Sao Paulo, Sao Paulo. Brasil 3Instituto Cubano de Investigaciones de los Derivados de la Caña de Azúcar, La Habana. Cuba |
| Year: | 2001 |
| Season: | Sep |
| Volumen: | 18 |
| Number: | 3 |
| Pages: | 299-311 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | This paper analyzes the influence of pH, temperature and degree of hydrolyzate concentration on the removal of volatile and nonvolatile compounds from sugarcane bagasse hemicellulosic hydrolyzate treated with activated charcoal before or after the vacuum evaporation process. Furfural and 5-Hydroxymethylfurfural were almost totally removed in all the experiments, irrespective of pH and temperature and whether the charcoal was added before or after the vacuum evaporation process. Adding activated charcoal before the vacuum evaporation process favored the removal of phenolic compounds for all values of pH. Acetic acid, on the contrary, was most effectively removed when the activated charcoal was added after the vacuum evaporation process at an acid pH (0.92) and at the highest degree of hydrolyzate concentration (f=4). However, addition of activated charcoal before or after vacuum evaporation at an acid pH (0.92) and at the highest degree of hydrolyzate concentration (f=4) favored the removal of both acetic acid and phenolic compounds |
| Disciplines: | Química |
| Keyword: | Ingeniería química, Biotecnología, Bagazo de caña, Hidrolizado hemicelulósico, Evaporación por vacío, Carbón activado, Acido acético, Compuestos fenólicos |
| Keyword: | Chemistry, Chemical engineering, Biotechnology, Sugarcane bagasse, Hemicellulosic hydrolyzate, Vacuum evaporation, Activated carbon, Acetic acid, Phenolic compounds |
| Full text: | Texto completo (Ver HTML) |
