Biorefinery of lignocellulosic biomass from an elm clone Production of fermentable sugars and lignin-derived biochar for energy and environmental applications

Valorization of lignocellulosic feedstock from a Dutch elm disease tolerant Ulmus minor clone was studied as a new biomass resource. Herein, fermentable sugars and activated carbons from the side-stream lignins were produced. For the sugar extraction organosolv and acid hydrolysis pretreatments prior to enzymatic hydrolysis were compared for the first time for this clone prior to enzymatic hydrolysis; organosolv was more efficient for delignification (49 %), while acid hydrolysis was more efficient at eliminating hemicelluloses (95 %). A high final glucose concentration of 22–23.5 g L−1 was obtained after enzymatic hydrolysis suggesting that this clone can be considered a potential source for glucose-based biofuel production. The side-stream lignins were converted to microporous biochars of high surface area (1220 m2 g−1) and micropore volume (0.42 cm3 g−1). These biochars exhibited excellent properties as electrodes in supercapacitors with a specific capacitance of 118 F g−1 and a high energy density of 14 Wh kg−1 at 7000 W kg−1, while they were also efficient adsorbents in water remediation of model contaminants.

Bibliographic Details

Main Authors:	Martín-Sampedro, R., Eugenio Martín, María Eugenia, Fillat Latorre, Úrsula, Aranda, P., Ruiz-Hitzky, E., Ibarra Trejo, David, Wicklein, B., Martín, J. A.
Format:	artículo biblioteca
Language:	English
Published:	Wiley 2019
Subjects:	Energy, Elm clone biomass, Environment, Fermentable sugars, Lignin-derived biochar,
Online Access:	http://hdl.handle.net/20.500.12792/651 http://hdl.handle.net/10261/290590
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