| Journal: | Brazilian journal of chemical engineering |
| Database: | PERIÓDICA |
| System number: | 000308811 |
| ISSN: | 0104-6632 |
| Authors: | Faria, L.F.F1 Di Luccio, M2 Nobrega, R3 Borges, C.P |
| Institutions: | 1Faculdade de Engenharia Quimica de Lorena, Departamento de Engenharia Quimica, Lorena, Sao Paulo. Brasil 2Universidade Regional Integrada do Alto Uruguai e das Missoes, Departamento de Engenharia de Alimentos, Erechim, Rio Grande do Sul. Brasil 3Universidade Federal do Rio de Janeiro, Instituto Alberto Luiz Coimbra de Pos-Graduacao e Pesquisa de Engenharia, Rio de Janeiro. Brasil |
| Year: | 2002 |
| Season: | Abr |
| Volumen: | 19 |
| Number: | 2 |
| Pages: | 141-150 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Aplicado, descriptivo |
| English abstract | Sterilization of fermentation medium involving heat may result in undesirable chemical reactions that alter nutrient concentration and yield products, which interfere in the fermentation performance. Sterilization of heat-sensitive compounds usually involves separate sterilizations of carbon source and nutrient solution. Membrane separation processes are an alternative to thermal processes, as they have many advantages such as the possibility of continuous and modular operation and the use of moderate temperatures. In this context, the objective of this work was the preparation of hollow-fiber membranes and the design of modules suitable for continuous sterilization of fermentation medium. The membrane with the best performance had a maximum pore diameter of 0.2 mu m and a permeability of 42.9 L/m².bar.h for a glucose/peptone/yeast extract medium. A module with 0.26 m² of permeation area was built with these membranes. This module was able to provide a permeate flow rate of 2.2 L/h using a pressure difference of 0.2 bar. The collected permeate was completely sterile, thus confirming the efficiency of this process |
| Disciplines: | Química |
| Keyword: | Fermentaciones, Medios de cultivo, Esterilización, Microfiltración, Membranas |
| Keyword: | Chemistry, Fermentation, Culture media, Sterilization, Microfiltration, Membranes |
| Full text: | Texto completo (Ver HTML) |
