Producción de biodiesel utilizando biocatalizadores
Date
2016
Journal Title
Journal ISSN
Volume Title
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Abstract
El objetivo general de este trabajo es desarrollar un biocatalizador para su aplicación en la producción de
biocombustibles a partir de materias primas renovables mediante la inmovilización enzimática en soportes
sólidos nano-estructurado [1,2]. Específicamente, el propósito principal es inmovilizar la enzima lipasa de
Pseudomonas fluorescens en el material mesoporoso SBA-15 (Santa Barbara Amorphous) puro sintetizado
mediante tratamiento hidrotérmico [3]. Comparando su actividad para la producción de biodiesel a partir
de aceites vegetales con enzimas inmovilizadas en materiales SBA-15 modificados con metales (Ca, Na,
Fe, Cu, Al, K) por el método de impregnación húmeda [4].
Las propiedades fisicoquímicas de los materiales mesoporosos sintetizados fueron determinadas por
espectroscopia de dispersión de rayos X de ángulo reducido (SAXS), Microscopía de Transmisión
Electrónica (TEM ) y UV-Visible. La enzima fue inmovilizada mezclando cada material mesoporosos con
una solución enzimática en agitación para lograr la inmovilización por absorción física. La efectiva
incorporación de la enzima en los materiales fue corroborada determinando la cantidad de proteína en la
fracción soluble luego de la inmovilización por el método de Bradford. Se determinaron las condiciones
óptimas para la actividad catalítica del biocatalizador: relación aceite/etanol, % de agua, cantidad de
enzima inmovilizada/mg de material SBA-15, tiempo de reacción e influencia en la actividad del
biocatalizador del metal en impregnado en el material.
The objective of this work is to develop a catalyst for use in the biofuels production from renewable raw materials using an enzymatic immobilization on solid supports nano-structured [1,2]. In fact, the main purpose is to immobilize the lipase of Pseudomonas fluorescens in the mesoporous material SBA-15 (Santa Barbara Amorphous) pure, synthesized by hydrothermal treatment [3]. And compare their activity for the biodiesel production, from vegetable oils, with the enzyme immobilized on materials SBA-15 modified with metals (Ca, Na, Fe, Cu, Al, K) by the wet impregnation method [4]. The physicochemical properties of the synthesized mesoporous materials were determined by Small-angle X-ray scattering (SAXS), Transmission electron microscopy (TEM) and UV-visible. The enzyme was immobilized by mixing each mesoporous material with an enzyme solution to achieve immobilization by physical adsorption. The effective incorporation of the enzyme in the materials was confirmed determining the amount of protein in the soluble fraction after immobilization by the Bradford method. The optimal conditions for the catalytic activity of the biocatalyst were determined : oil / ethanol ratio,% water, amount of immobilized enzyme / mg of SBA-15 materials, reaction time and activity of the biocatalyst respect to the metal impregnated in the solid used .
The objective of this work is to develop a catalyst for use in the biofuels production from renewable raw materials using an enzymatic immobilization on solid supports nano-structured [1,2]. In fact, the main purpose is to immobilize the lipase of Pseudomonas fluorescens in the mesoporous material SBA-15 (Santa Barbara Amorphous) pure, synthesized by hydrothermal treatment [3]. And compare their activity for the biodiesel production, from vegetable oils, with the enzyme immobilized on materials SBA-15 modified with metals (Ca, Na, Fe, Cu, Al, K) by the wet impregnation method [4]. The physicochemical properties of the synthesized mesoporous materials were determined by Small-angle X-ray scattering (SAXS), Transmission electron microscopy (TEM) and UV-visible. The enzyme was immobilized by mixing each mesoporous material with an enzyme solution to achieve immobilization by physical adsorption. The effective incorporation of the enzyme in the materials was confirmed determining the amount of protein in the soluble fraction after immobilization by the Bradford method. The optimal conditions for the catalytic activity of the biocatalyst were determined : oil / ethanol ratio,% water, amount of immobilized enzyme / mg of SBA-15 materials, reaction time and activity of the biocatalyst respect to the metal impregnated in the solid used .
Description
Keywords
Producción de biodiesel, Biocombustibles, Biocatalizador
Citation
16° Congreso Internacional de Metalurgia y Materiales (2016).
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