Obtención de nanocelulosa a partir de residuos del olivar
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2024-01-12
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Jaén: Universidad de Jaén
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Este trabajo aborda como se puede obtener nanocelulosa a partir de residuos de poda de olivo. Con el objetivo de purificar la celulosa de la materia prima, se realizaron una serie de tratamientos: tratamiento básico (61,30 % de rendimiento), tratamiento ácido (87,93 % de rendimiento), blanqueamiento (87,54 % de rendimiento) y purificación de celulosa para producir nanocelulosa. El rendimiento global que se obtuvo fue de un 47,18 %. Además, se logró obtener nanocelulosa en la escala nanométrica al centrifugar y liofilizar la celulosa purificada. Se determinaron los contenidos de lignina, hemicelulosa y celulosa mediante caracterizaciones, los cuales fueron corroborados en los espectros FT-IR obtenidos. A partir de los resultados ofrecidos por los difractogramas DRX, se determinaron los valores de cristalinidad de la celulosa purificada (72,73 %) y de la nanocelulosa (71,58 %).
This work addresses how nanocellulose can be obtained from olive pruning waste. In order to purify the cellulose from the raw material, a series of treatments were carried out: basic treatment (61.30 % yield), acid treatment (87.93 % yield), bleaching (87.54 % yield) and cellulose purification to produce nanocellulose. The overall yield obtained was 47.18 %. In addition, nanocellulose was obtained at the nano-scale by centrifuging and freeze-drying the purified cellulose. Lignin, hemicellulose and cellulose contents were determined by characterizations, which were corroborated in the FT- IR spectra obtained. From the results provided by the XRD diffractograms, the crystallinity values of purified cellulose (72.73 %) and nanocellulose (71.58 %) were determined.
This work addresses how nanocellulose can be obtained from olive pruning waste. In order to purify the cellulose from the raw material, a series of treatments were carried out: basic treatment (61.30 % yield), acid treatment (87.93 % yield), bleaching (87.54 % yield) and cellulose purification to produce nanocellulose. The overall yield obtained was 47.18 %. In addition, nanocellulose was obtained at the nano-scale by centrifuging and freeze-drying the purified cellulose. Lignin, hemicellulose and cellulose contents were determined by characterizations, which were corroborated in the FT- IR spectra obtained. From the results provided by the XRD diffractograms, the crystallinity values of purified cellulose (72.73 %) and nanocellulose (71.58 %) were determined.