El uso de fluidos comprimidos para obtener biocompuestos a partir de la fibra del aceite de palma (Elaeis sp.)
Author
de Oliveira, Aline L. P. C.
da C. Goes, Antônio Clinton
Almeida, Priscila S
Borges, Gustavo R.
Francheschi, Elton
Dariva, Cláudio
Estadisticas
Publicación:
Revista Palmas; Vol. 41 Núm. 3 (2020); 53-66
0121-2923
Revista Palmas; Vol. 41 Núm. 3 (2020); 53-66
0121-2923
Abstract
Empty fruit bunch fiber (EFBF) is a lignocellulosic waste generated by the palm oil agribusiness. The amount of EFBF produced is equal to the oil obtained, and it can be used as raw material to obtain biocomposites. The objective of this work is to fragment the EFBF employing pressurized fluids in a semi-continuous system to obtain different biocomposites. For this, pure water and a mixture of water/carbon dioxide were employed as solvent to obtain sugar monomers and a mixture of compressed water/ethanol (1:1 vol.) to obtain crystalline cellulose. The experiments were conducted in the temperature range of 120 to 240 ºC, using reaction times between 5 and 15 min at 60 bar, and solvent flow rate of 0.75 mL.min-1. A maximum of 30.47 mg.mL-1 of xylose was obtained at 210 ºC for 15 min of reaction with pure water as solvent. The best condition to obtain crystalline cellulose was 240 ºC for 30 minutes of reaction, obtaining 38.2% of cellulose from palm oil EFBF. La fibra de racimos vacíos (FRV) es un desperdicio lignocelulósico creado por la agroindustria del aceite de palma. La cantidad de FRV producidos es igual al aceite obtenido y puede utilizarse como materia prima para conseguir biocompuestos. El objetivo de este trabajo es fragmentar la FRV utilizando fluidos presurizados en un sistema semicontinuo para obtener varios biocompuestos. Para esto, se utilizó agua pura y una mezcla de agua/dióxido de carbono como solvente para obtener monómeros del azúcar, y una mezcla comprimida de agua/etanol (1:1 vol.) para obtener celulosa cristalina. Los experimentos se realizaron en un rango de temperatura de 120 a 240 °C, utilizando tiempos de reacción de entre 5 y 15 min, a una presión de 60 bar y una tasa de flujo del solvente de 0,75 ml.min-1. Se obtuvo un máximo de 30,47 mg.ml-1 de xilosa a 210 °C durante 15 minutos de reacción con agua pura como solvente. La mejor condición para obtener celulosa cristalina fue con 240 °C, durante 30 minutos de reacción, obteniendo 38,2 % de celulosa de FRV de palma de aceite.
Empty fruit bunch fiber (EFBF) is a lignocellulosic waste generated by the palm oil agribusiness. The amount of EFBF produced is equal to the oil obtained, and it can be used as raw material to obtain biocomposites. The objective of this work is to fragment the EFBF employing pressurized fluids in a semi-continuous system to obtain different biocomposites. For this, pure water and a mixture of water/carbon dioxide were employed as solvent to obtain sugar monomers and a mixture of compressed water/ethanol (1:1 vol.) to obtain crystalline cellulose. The experiments were conducted in the temperature range of 120 to 240 ºC, using reaction times between 5 and 15 min at 60 bar, and solvent flow rate of 0.75 mL.min-1. A maximum of 30.47 mg.mL-1 of xylose was obtained at 210 ºC for 15 min of reaction with pure water as solvent. The best condition to obtain crystalline cellulose was 240 ºC for 30 minutes of reaction, obtaining 38.2% of cellulose from palm oil EFBF.
Palabras clave:
Palm oil waste
biocomposites
pressurized fluids
desechos de palma de aceite
biocompuestos
fluidos presurizados
Palm oil waste
biocomposites
pressurized fluids
desechos de palma de aceite
biocompuestos
fluidos presurizados