Evaluación preliminar de la capacidad de desaromatización de aislados bacterianos sobre una corriente de refinerı́a (Light Cycle Oil) Recibido:/ noviembre, 2020. Aceptado: /diciembre, 2020.
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Abstract
El aceite de ciclo liviano (Light Cicle Oil, LCO por sus siglas en inglés) es un subproducto del Fraccionamiento Catalítico Fluidizado (FCC) considerado un diésel de mala calidad debido a su alto contenido de azufre (3 % en peso) y compuestos aromáticos (50–80 % en peso) que ha sido mejorado por i) saturación aromática (ASAT), ii) hidrocraqueo suave y iii) saturación aromática seguida de apertura selectiva del anillo (SRO) de estructuras nafténicas. Por otra parte, se ha reportado que diferentes géneros bacterianos degradan compuestos aromáticos de forma sencilla y económica. En consecuencia, en este trabajo se evaluó la capacidad de aislados bacterianos para degradar naftaleno y otros compuestos aromáticos presentes en un LCO, proveniente de la refinería de Puerto La Cruz (Estado Anzoátegui-Venezuela). Mediante espectroscopía de UV-Visible fue observada la obtención de una disminución del naftaleno presente en el LCO del 24 al 44 % aproximadamente y por espectroscopía de Infrarrojo con Transformada de Fourier, una disminución de compuestos aromáticos del 27 al 45 %. Los resultados sugieren que los aislados bacterianos evaluados son capaces de utilizar los compuestos aromáticos presentes en el LCO como fuente de carbono y energía, quedando por evaluar su consecuente efecto sobre la calidad del LCO obtenido.
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