Repositorio UVigo

Integral valorization of Acacia dealbata wood in organic medium catalyzed by an acidic ionic liquid

Investigo Repository

Integral valorization of Acacia dealbata wood in organic medium catalyzed by an acidic ionic liquid

Portela Grandío, Ana; Peleteiro Prieto, Susana; Yáñez Díaz, Maria Remedios; Romaní, Aloia
 
DATE : 2021-12
UNIVERSAL IDENTIFIER : http://hdl.handle.net/11093/2750
UNESCO SUBJECT : 3303 Ingeniería y Tecnología Químicas
DOCUMENT TYPE : article

ABSTRACT :

In this work, a novel delignification process was proposed for the fractionation of invasive species such as Acacia dealbata wood. Organosolv process catalyzed with an acidic ionic liquid, 1-butyl-3-methylimidazolium hydrosulfate was evaluated to obtain cellulose-enriched solids and liquid fractions rich in hemicelluloses derived compounds and lignin. Under selected operating conditions (190 °C, 60% ethanol, 60 min of reaction time and 0.6 g 1-butyl-3-methylimidazolium hydrosulfate/g wood), high solubilization of lignin and hemicelluloses and cellulose recovery (87.5%, 88.7% and 88.3%, respectively), with a pulp yield of 43.1% were achieved. Moreover, 62.6 % of lignin was recovered by precipitation from the black liquor (composed mainly by 4.43 g xylose/L, 7.66 g furfural/L and 3.59 g acetic acid/L). In addition, enzymatic digestibility of delignified wood was also assayed. Overall, this work presents an alternative biorefinery scheme based in the use of environmentally friendly solvent and catalyst for selective fractionation of A. dealbata wood.

Show full item record



Files in this item

Attribution-NonCommercial-NoDerivatives 4.0 International Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 International
2013 Universidade de Vigo, Todos los derechos reservados
Calidad So9001