Fractionation of Pinus radiata wood by combination of steam explosion and organosolv delignification

Abstract: This work proposes a sequential combination of steam explosion and organosolv delignification for Pinus radiata fractionation. An efficient pretreatment to fully optimize the use of lignocellulosic materials is the key to make a biorefinery profitable, especially for softwoods, known to be...

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Autores principales:	Imlauer-Vedoya,Camila María, Vergara-Alarcón,Priscila, Area,María Cristina, Revilla,Esteban, Felissia,Fernando Esteban, Villar,Juan Carlos
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2019
Materias:	Biomass enzymatic hydrolysis lignins pretreatment radiata pine.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2019000400587
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spelling	oai:scielo:S0718-221X20190004005872019-09-30Fractionation of Pinus radiata wood by combination of steam explosion and organosolv delignificationImlauer-Vedoya,Camila MaríaVergara-Alarcón,PriscilaArea,María CristinaRevilla,EstebanFelissia,Fernando EstebanVillar,Juan Carlos Biomass enzymatic hydrolysis lignins pretreatment radiata pine. Abstract: This work proposes a sequential combination of steam explosion and organosolv delignification for Pinus radiata fractionation. An efficient pretreatment to fully optimize the use of lignocellulosic materials is the key to make a biorefinery profitable, especially for softwoods, known to be more recalcitrant than other lignocellulosic raw materials. Steam explosion has a dual effect on biomass as morphological and chemical changes are introduced. A delignifying stage has been stated to be necessary in order to ease hydrolytic enzymes accessibility to cellulose while avoiding non-productive bonds with the lignin present. Three steam explosion conditions were tested (170°C, 5 min; 180°C, 10 min; 170°C, 5+5 min) followed by an organosolv delignification stage, carried out at two different conditions (170°C, 60 min; 170°C, 90 min). All treatment yields, delignification extent, and hydrolysis yields were determined to evaluate each stage. The steam explosion treatment did not produce high delignification extent. Maximum global delignification (50,4%) was achieved when combining the two-cycle steam explosion with the most severe post-treatment condition tested. Enzymatic hydrolysis of the cellulosic residue improved after organosolv delignification; however, hydrolysis yields did not exceed 35%. The chemical changes undergone by softwood lignins are presumably responsible for the low digestibility.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.21 n.4 20192019-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2019000400587en10.4067/S0718-221X2019005000414
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Biomass enzymatic hydrolysis lignins pretreatment radiata pine.
spellingShingle	Biomass enzymatic hydrolysis lignins pretreatment radiata pine. Imlauer-Vedoya,Camila María Vergara-Alarcón,Priscila Area,María Cristina Revilla,Esteban Felissia,Fernando Esteban Villar,Juan Carlos Fractionation of Pinus radiata wood by combination of steam explosion and organosolv delignification
description	Abstract: This work proposes a sequential combination of steam explosion and organosolv delignification for Pinus radiata fractionation. An efficient pretreatment to fully optimize the use of lignocellulosic materials is the key to make a biorefinery profitable, especially for softwoods, known to be more recalcitrant than other lignocellulosic raw materials. Steam explosion has a dual effect on biomass as morphological and chemical changes are introduced. A delignifying stage has been stated to be necessary in order to ease hydrolytic enzymes accessibility to cellulose while avoiding non-productive bonds with the lignin present. Three steam explosion conditions were tested (170°C, 5 min; 180°C, 10 min; 170°C, 5+5 min) followed by an organosolv delignification stage, carried out at two different conditions (170°C, 60 min; 170°C, 90 min). All treatment yields, delignification extent, and hydrolysis yields were determined to evaluate each stage. The steam explosion treatment did not produce high delignification extent. Maximum global delignification (50,4%) was achieved when combining the two-cycle steam explosion with the most severe post-treatment condition tested. Enzymatic hydrolysis of the cellulosic residue improved after organosolv delignification; however, hydrolysis yields did not exceed 35%. The chemical changes undergone by softwood lignins are presumably responsible for the low digestibility.
author	Imlauer-Vedoya,Camila María Vergara-Alarcón,Priscila Area,María Cristina Revilla,Esteban Felissia,Fernando Esteban Villar,Juan Carlos
author_facet	Imlauer-Vedoya,Camila María Vergara-Alarcón,Priscila Area,María Cristina Revilla,Esteban Felissia,Fernando Esteban Villar,Juan Carlos
author_sort	Imlauer-Vedoya,Camila María
title	Fractionation of Pinus radiata wood by combination of steam explosion and organosolv delignification
title_short	Fractionation of Pinus radiata wood by combination of steam explosion and organosolv delignification
title_full	Fractionation of Pinus radiata wood by combination of steam explosion and organosolv delignification
title_fullStr	Fractionation of Pinus radiata wood by combination of steam explosion and organosolv delignification
title_full_unstemmed	Fractionation of Pinus radiata wood by combination of steam explosion and organosolv delignification
title_sort	fractionation of pinus radiata wood by combination of steam explosion and organosolv delignification
publisher	Universidad del Bío-Bío
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2019000400587
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Fractionation of Pinus radiata wood by combination of steam explosion and organosolv delignification

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