| dc.creator | Imlauer-Vedoya, Camila María | |
| dc.creator | Vergara-Alarcón, Priscila | |
| dc.creator | Area, María Cristina | |
| dc.creator | Revilla, Esteban | |
| dc.creator | Felissia, Fernando Esteban | |
| dc.creator | Villar, Juan Carlos | |
| dc.date | 2019-10-01 | |
| dc.date.accessioned | 2023-03-13T20:59:06Z | |
| dc.date.available | 2023-03-13T20:59:06Z | |
| dc.identifier | https://revistas.ubiobio.cl/index.php/MCT/article/view/3810 | |
| dc.identifier.uri | https://revistaschilenas.uchile.cl/handle/2250/224200 | |
| dc.description | 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 chemicalchanges 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 treatmentyields, 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, hydrolysisyields did not exceed 35%. The chemical changes undergone by softwood lignins are presumably responsible for the low digestibility. | en-US |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | Universidad del Bio-Bio | en-US |
| dc.relation | https://revistas.ubiobio.cl/index.php/MCT/article/view/3810/3611 | |
| dc.source | Maderas-Cienc Tecnol; Vol. 21 No. 4 (2019); 587-598 | en-US |
| dc.source | Maderas-Cienc Tecnol; Vol. 21 Núm. 4 (2019); 587-598 | es-ES |
| dc.source | 0718-221X | |
| dc.source | 0717-3644 | |
| dc.subject | Biomass | en-US |
| dc.subject | enzymatic hydrolysis | en-US |
| dc.subject | lignins | en-US |
| dc.subject | pretreatment | en-US |
| dc.subject | radiata pine | en-US |
| dc.title | Fractionation of Pinus radiata wood by combination of steam explosion and organosolv delignification | en-US |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
