RT Journal Article
T1 Biomass valorization by using a sequence of acid hydrolysis and  pyrolysis processes. Application to Leucaena leucocephala
A1 Loaiza Rodríguez, Javier Mauricio
A1 Díaz Blanco, Manuel Jesús
A1 López Baldovín, Francisco
A1 García Domínguez, Juan Carlos
A1 García Domínguez, María Trinidad
AB Among main ways to provide an environmentally friendly energy and platform chemicals are the lignocellulosic conversion processes. The proper execution of this way will depend on the correct selection of lignocellulosic materials. A compelling plant is Leucaena leucocephala because its great variety of uses, its high biomass production and its leguminous nature. In this study, acid hydrolysis (130-170°C and 0.5-2% H2SO4, to extract valuable hemicelluloses) as pretreatment and pyrolysis of the solid residue (to get a gaseous fuel) as treatment have been used in its valorization. A laboratory-scale reactor was used for the pyrolysis experiments (550ºC, N2) for both Leucaena leucocephala, as raw material, and the solid residues after hydrolysis process and raw material. The amounts of CO, CO2 and H2 found in the raw material are similar to those found in the solids obtained after the different studied hydrolysis conditions. Moreover, the thermal behavior of studied solids has been studied by thermogravimetric analysis under nitrogen atmosphere at different heating rates (5, 10, 15 and 20 ºC min-1). Activation energy for all samples has been obtained by the Flynn-Wall-Ozawa method. The optimum value, in which a high relationship between recoverable hemicelluloses fraction and H2 concentration is found, under medium hydrolysis temperature (150ºC) has been obtained and was independent of the amount of acid added to the hydrolysis process.
PB Elsevier
SN 0016-2361
YR 2017
FD 2017-09
LK http://hdl.handle.net/10272/14136
UL http://hdl.handle.net/10272/14136
LA eng
NO Loaiza, J.M., Díaz Blanco, M.J., López Baldovín, F., García Domínguez, J.C. : "Biomass valorization by using a sequence of acid hydrolysis and pyrolysis processes. Application to Leucaena leucocephala, In Fuel, Vol. 203, (2017), Pages 393-402, ISSN 0016-2361, https://doi.org/10.1016/j.fuel.2017.04.135.
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026