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Tagasaste, leucaena and paulownia: three industrial crops for energy and hemicelluloses production

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 extr...

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Autores principales: Palma, Alberto, Loaiza, Javier Mauricio, Díaz, Manuel J., García, Juan Carlos, Giráldez, Inmaculada, López, Francisco
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8028148/
https://www.ncbi.nlm.nih.gov/pubmed/33827634
http://dx.doi.org/10.1186/s13068-021-01930-0
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author Palma, Alberto
Loaiza, Javier Mauricio
Díaz, Manuel J.
García, Juan Carlos
Giráldez, Inmaculada
López, Francisco
author_facet Palma, Alberto
Loaiza, Javier Mauricio
Díaz, Manuel J.
García, Juan Carlos
Giráldez, Inmaculada
López, Francisco
author_sort Palma, Alberto
collection PubMed
description 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 biomass from three different crops (Chamaecytisus proliferus, Leucaena diversifolia and Paulownia trihybrid) was modelled and the 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 extract the hemicellulose fraction on the heat capacity and activation energy of the subsequent combustion process was examined. The heat power and the activation energy of the combustion process were found to depend markedly on the hemicellulose content of the raw material. Thus, a low content in hemicelluloses resulted in a lower increased energy yield after acid hydrolysis stage. The process was also influenced by the operating conditions of the acid hydrolysis treatment, which increased the gross calorific value (GCV) of the solid residue by 0.6–9.7% relative to the starting material. In addition, the activation energy 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 increasing degree 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 markedly with increasing degree of conversion, and also with increasing temperature and acid concentration in the acid hydrolysis treatment. 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 large amount of hemicelluloses and a solid residue with an increased heat power amenable to efficient valorization by combustion. There are many potential applications of the hemicelluloses-rich and lignin-rich fraction, for example as multi-components of bio-based feedstocks for 3D printing, for energy and other value-added chemicals. [Image: see text]
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spelling pubmed-80281482021-04-08 Tagasaste, leucaena and paulownia: three industrial crops for energy and hemicelluloses production Palma, Alberto Loaiza, Javier Mauricio Díaz, Manuel J. García, Juan Carlos Giráldez, Inmaculada López, Francisco Biotechnol Biofuels Research 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 biomass from three different crops (Chamaecytisus proliferus, Leucaena diversifolia and Paulownia trihybrid) was modelled and the 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 extract the hemicellulose fraction on the heat capacity and activation energy of the subsequent combustion process was examined. The heat power and the activation energy of the combustion process were found to depend markedly on the hemicellulose content of the raw material. Thus, a low content in hemicelluloses resulted in a lower increased energy yield after acid hydrolysis stage. The process was also influenced by the operating conditions of the acid hydrolysis treatment, which increased the gross calorific value (GCV) of the solid residue by 0.6–9.7% relative to the starting material. In addition, the activation energy 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 increasing degree 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 markedly with increasing degree of conversion, and also with increasing temperature and acid concentration in the acid hydrolysis treatment. 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 large amount of hemicelluloses and a solid residue with an increased heat power amenable to efficient valorization by combustion. There are many potential applications of the hemicelluloses-rich and lignin-rich fraction, for example as multi-components of bio-based feedstocks for 3D printing, for energy and other value-added chemicals. [Image: see text] BioMed Central 2021-04-08 /pmc/articles/PMC8028148/ /pubmed/33827634 http://dx.doi.org/10.1186/s13068-021-01930-0 Text en © The Author(s) 2021 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Research
Palma, Alberto
Loaiza, Javier Mauricio
Díaz, Manuel J.
García, Juan Carlos
Giráldez, Inmaculada
López, Francisco
Tagasaste, leucaena and paulownia: three industrial crops for energy and hemicelluloses production
title Tagasaste, leucaena and paulownia: three industrial crops for energy and hemicelluloses production
title_full Tagasaste, leucaena and paulownia: three industrial crops for energy and hemicelluloses production
title_fullStr Tagasaste, leucaena and paulownia: three industrial crops for energy and hemicelluloses production
title_full_unstemmed Tagasaste, leucaena and paulownia: three industrial crops for energy and hemicelluloses production
title_short Tagasaste, leucaena and paulownia: three industrial crops for energy and hemicelluloses production
title_sort tagasaste, leucaena and paulownia: three industrial crops for energy and hemicelluloses production
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8028148/
https://www.ncbi.nlm.nih.gov/pubmed/33827634
http://dx.doi.org/10.1186/s13068-021-01930-0
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