Agualimpia B, Otero JV, Zafra G

Idioma: Ingles.
Referencias bibliográficas: 37
Paginas: 1221-1226
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RESUMEN

En este trabajo se evaluaron 31 aislados microbianos nativos con habilidad de remover grasas y aceites para el tratamiento de efluentes de la refinación de aceite palma (POMEs), usándolos como organismos simples o consorcios. La caracterización de los microorganismos mostró que éstos correspondían a los géneros Candida, Bacillus y Pseudomonas. El uso de siete inóculos mixtos, conformados por diferentes combinaciones de los seis aislados con mayor actividad degradadora, condujo a una remoción del 68 al 84 % de aceite de palma en medio líquido después de 48 h de tratamiento. El inóculo constituido por todos los aislados produjo los mejores resultados con una reducción de la DBO de 1840 to 260 mg/L (84 %), evidenciándose un efecto sinérgico entre los microorganismos. El uso del mismo inóculo para el tratamiento de POMEs llevó a una remoción del 75 % de la materia orgánica y 72 % de grasas y aceites después de 48 h. Nuestros resultados demuestran la habilidad de estos aislados para utilizar aceite de palma como única fuente de carbono y disminuir eficientemente la concentración de contaminantes en los POMEs en un periodo corto de tiempo. El uso de estos microorganismos puede proveer ventajas adaptativas que podrían mejorar el tratamiento de los POMEs, especialmente cuando se usan mezclas de bacterias y levaduras con capacidad degradadora.

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