Separación de las fases acuosa y org´´anica mediante reactores de menbraba en reacciones de biodesulfuración
Resumen
En este trabajo se presenta un prototipo de biorreactor de membranas para la separación de las fases de la emulsión formada en la reacción de biodesulfurización. Las membranas hidrofóbicas utilizadas para la construcción del prototipo permiten la separación de las fases acuosa orgánica. La unidad de separación se asemeja a un intercambiador de tubo y coraza. Alimentando la emulsión por la carcasa y gracias al gradiente de presión que se ejerce sobre la membrana, la fase orgánica permea la membrana permitiendo la obtención de la fase orgánica libre de células y agua. Se evaluaron diferentes relaciones fase orgánica/ fase acuosa y diferentes concentraciones celulares. Los resultados indican que es posible separar las fases manipulando la presión del fluido al interior del biorreactor incluso a concentraciones celulares del orden de 7 g/l . El sistema puede ser utilizado también como unidad de reacción, la conversión biológica se evaluó verificando la presencia de 2-HBP, uno de los metabolitos de la ruta 4S en la reacción de Biodesulfurización. Esta configuración de biorreactor no ha sido explorada antes para el proceso de biodesulfurización y por tanto representa una innovación en el área.
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