RT Journal Article
T1 Kinetic and hydrogen production analysis in the sequential valorization of a Populus clone by cold alkaline extraction and pyrolysis
A1 Lozano Calvo, Susana
A1 Loaiza Rodríguez, Javier Mauricio
A1 García Domínguez, Juan Carlos
A1 Tapias Martín, Raúl
A1 López Baldovín, Francisco
AB This work employed a two-step biorefining process, consisting of a hemicellulose-rich liquor production through ultrasound-assisted cold alkaline extraction (CAE), followed by thermochemical treatment of the resultant solid phase. The post-CAE solid phase's pyrolytic potential was assessed by application of thermogravimetric analysis (TGA) and Friedman's isoconversional method, and also from hydrogen production. The solid phases remaining after the CAE treatment were more reactive than the untreated raw material. Notably, the alkali concentration employed in the first step was the individual variable most pronounced influence on their activation energy (Ea). Thus, at a degree of conversion α = 0.50, Ea ranged from 109.7 to 254.3 kJ/mol for the solid phases, compared to 177 kJ/mol for the raw material; this value decreased with rising glucan content. At maximal degradation, the post-CAE solid phases produced up to 15.57% v/v more hydrogen than did the untreated raw material.
PB Springer
SN 2045-2322 (electrónico)
YR 2024
FD 2024
LK https://hdl.handle.net/10272/23531
UL https://hdl.handle.net/10272/23531
LA eng
NO Lozano-Calvo, S., Loaiza, J. M., García, J. C., Tapias, R., & López, F. (2024). Kinetic and hydrogen production analysis in the sequential valorization of a Populus clone by cold alkaline extraction and pyrolysis. In Scientific Reports (Vol. 14, Issue 1). Springer Science and Business Media LLC. https://doi.org/10.1038/s41598-024-52052-0
NO Project PID2020-112875RB-C21, MCIN/AEI /10.13039/501100011033/Spain's Ministry of Science and Innovation and the National Research Program Oriented to the Challenges of Society PRE2021-097925 support (funded by MCIN/AEI/10.13039/501100011033 and by the FSE+)/Ministry of Science and Innovation and the State Research Agency
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026