Publicado 2015-12-30
Palabras clave
- Microalgas,
- Botryococcus Braunii,
- CO2,
- Fotobiorreator,
- Lípidos
- Hidrocarburos. ...Más
Cómo citar
Resumen
Diversos estudios sobre el cultivo de microalgas a escala laboratorio y piloto han registrado el potencial de estos microorganismos para la producción de materia prima en la elaboración de biocombustibles. El suministro de una fuente de carbono para el cultivo masivo de microalgas representa una de las principales limitantes en el proceso productivo; estas fijan fotosintéticamente carbono inorgánico (CO2) y sintetizan metabolitos para la producción de biocombustibles. En el presente estudio se evaluó la influencia de diversos parámetros de suministro de CO2 sobre cultivos de la especie Botryococcus braunii en fotobiorreactores a escala laboratorio. Se plantearon diseños experimentales centrales compuestos para correlacionar los parámetros a evaluar y determinar su efecto en la dilución de CO2 y producción de metabolitos (biomasa, lípidos e hidrocarburos). Respecto a los parámetros de diseño del fotobiorreactor, alturas > 36cm, diámetros < 7cm y pequeños tamaños de burbuja ayudan a incrementar la dilución del CO2 hasta en 180%. Se encontró que altas concentraciones de CO2 (> 0,06v/vm) suministrado de manera continua son ideales para el crecimiento celular. Por otra parte, concentraciones medias (0,04 – 0,06v/vm) de CO2 son ideales para la producción de lípidos y concentraciones bajas de CO2 (≤ 0,02v/vm) favorecen la producción de hidrocarburos. Se validó el potencial de la cepa de B. braunii colombiana para la producción de biodiésel gracias a sus altas tasas de síntesis de lípidos.
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Referencias
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