ESTUDIO DE LAS CONDICIONES DE PIRÓLISIS DEL RESIDUO DE EXTRACCIÓN DE BURITI
DOI:
https://doi.org/10.66104/k9c7j261Palabras clave:
Pirólisis; Biochar; Bio-aceite; Biomasa de Buriti; Degradación Térmica y Rendimiento.Resumen
Este estudio investigó la pirólisis de la biomasa de buriti con el objetivo de optimizar la producción de dos subproductos importantes: biochar y bio-aceite. Para este propósito, se realizaron experimentos en un reactor de pirólisis, variando las temperaturas entre 450 °C y 600 °C y los tiempos de proceso entre 10 y 60 minutos. El análisis termogravimétrico (TGA) reveló las diferentes etapas de la degradación térmica de la biomasa de buriti. Inicialmente, una pérdida de peso del 10% entre 10 °C y 200 °C se asoció con la evaporación del agua presente en la biomasa. Posteriormente, entre 200 °C y 400 °C, ocurrió una pérdida del 45%, correlacionada con la descomposición de hemicelulosa, celulosa y lignina, los principales componentes de la biomasa lignocelulósica. El mayor rendimiento de biochar se obtuvo a 450 °C durante 30 minutos de pirólisis (30,75%), mientras que el mayor rendimiento de bio-aceite se alcanzó a 525 °C durante 60 minutos (48,98%). El análisis de varianza (ANOVA) demostró que la temperatura influyó significativamente en el rendimiento de biochar, mientras que el tiempo fue el principal factor para el aumento del rendimiento de bio-aceite. El bio-aceite generado presentó un poder calorífico superior (PCS) de 10,68 MJ/kg, mientras que el biochar presentó un PCS significativamente mayor de 30,664 MJ kg-1, evidenciando su mayor eficiencia energética. El análisis espectroscópico por FTIR reveló la presencia de grupos funcionales como fenoles, alcoholes y compuestos alifáticos, confirmando la complejidad química de la biomasa. Los análisis de superficie ajustados, tanto en 3D como en 2D, indicaron que las temperaturas más bajas favorecen la producción de biochar, mientras que las temperaturas más altas y los tiempos más largos son más eficaces para la obtención de bio-aceite. Estos resultados sugieren que la pirólisis de la biomasa de buriti puede optimizarse para la producción eficiente de ambos subproductos, proporcionando una ruta sostenible para la valorización de esta biomasa.
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Derechos de autor 2026 Natália de Diniz Martins , Schaline Winck Alberti, Edson Antonio da Silva, Plínio Ribeiro Fajardo Campos

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