RT Journal Article
T1 Tagasaste, leucaena and paulownia: three industrial crops for energy and hemicelluloses production
A1 Palma López, Alberto
A1 Loaiza Rodríguez, Javier Mauricio
A1 Díaz Blanco, Manuel Jesús
A1 García Domínguez, Juan Carlos
A1 Giráldez Díaz, Inmaculada
A1 López Baldovín, Francisco
AB Background: Burning fast-growing trees for energy production can be an effective alternative to coal combustion.Thus, lignocellulosic material, which can be used to obtain chemicals with a high added value, is highly abundant,easily renewed and usually inexpensive. In this work, hemicellulose extraction by acid hydrolysis of plant biomassfrom three different crops (Chamaecytisus proliferus, Leucaena diversifolia and Paulownia trihybrid) was modelled andthe resulting solid residues were used for energy production.Results: The influence of the nature of the lignocellulosic raw material and the operating conditions used to extractthe hemicellulose fraction on the heat capacity and activation energy of the subsequent combustion process wasexamined.The heat power and the activation energy of the combustion process were found to depend markedly on the hemicellulosecontent of the raw material. Thus, a low content in hemicelluloses resulted in a lower increased energy yieldafter acid hydrolysis stage.The process was also influenced by the operating conditions of the acid hydrolysis treatment, which increased thegross calorific value (GCV) of the solid residue by 0.6–9.7% relative to the starting material. In addition, the activationenergy of combustion of the acid hydrolysis residues from Chamaecytisus proliferus (Tagasaste) and Paulownia trihybrid(Paulownia) was considerably lower than that for the starting materials, the difference increasing with increasingdegree of conversion as well as with increasing temperature and acid concentration in the acid hydrolysis.The activation energy of combustion of the solid residues from acid hydrolysis of tagasaste and paulownia decreased markedlywith increasing degree of conversion, and also with increasing temperature and acid concentration in the acid hydrolysistreatment. No similar trend was observed in Leucaena diversifolia (Leucaena) owing to its low content in hemicelluloses.Conclusions: Acid hydrolysis of tagasaste, leucaena and paulownia provided a valorizable liquor containing a largeamount of hemicelluloses and a solid residue with an increased heat power amenable to efficient valorization bycombustion. There are many potential applications of the hemicelluloses-rich and lignin-rich fraction, for example asmulti-components of bio-based feedstocks for 3D printing, for energy and other value-added chemicals.
PB BMC
SN 1754-6834
YR 2021
FD 2021-04
LK http://hdl.handle.net/10272/19862
UL http://hdl.handle.net/10272/19862
LA eng
NO Palma, A., Loaiza, J. M., Díaz, M. J., García, J. C., Giráldez, I., & López, F. (2021). Tagasaste, leucaena and paulownia: three industrial crops for energy and hemicelluloses production. Biotechnology for Biofuels, 14(1). DOI: https://doi.org/10.1186/s13068-021-01930-0
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026