| Revista: | Electronic journal of biotechnology |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000358100 |
| ISSN: | 0717-3458 |
| Autors: | Pizarro, Carolina1 Donoso Bravo, Andrés1 Jeison, David2 Ruiz Filippi, Gonzalo1 Chamy, Rolando1 |
| Institucions: | 1Pontificia Universidad Católica de Valparaíso, Facultad de Ingeniería, Valparaíso. Chile 2Universidad de La Frontera, Departamento de Ingeniería Química, Temuco, Cautín. Chile |
| Any: | 2011 |
| Volum: | 14 |
| Número: | 4 |
| País: | Chile |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | A start-up strategy was presented and evaluated to obtain a well-established biofilm in a gas lift-reactor capable both for the removal of organic matter and sulphate. Pumice stone was used as material support. The influence of shear forces, given by the biogas recirculation, the effect of the COD/SO4-2 ratio and the OLRs increase were evaluated on the reactor performance. From the first stages, cell colonization was observed along with the presence of extracellular polymeric substances. The COD and sulphate removal was over 70%, for all conditions. The increase of gas flow did not have an adverse effect on biofilm development even though there was some detachment. Specific methanogenic activity of the biofilm increased along the experiments. Operational parameters as alkalinity and alkalinity ratio were within the recommended values for the operation with sulphate-rich wastewater. For gas-lift reactors operation it becomes fundamental to have a suitable start-up strategy that takes into account the initial biofilm development from a non-acclimatized biomass |
| Disciplines | Biología |
| Paraules clau: | Biotecnología, Reactores de bombeo neumático, Solvatación, Materia orgánica, Sulfato, Biopelículas anaeróbicas |
| Keyword: | Biology, Biotechnology, Gas-lift reactors, Solvation, Organic matter, Sulfate, Anaerobic biofilms |
| Text complet: | Texto completo (Ver HTML) |
