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Título: | Steam explosion as a pretreatment of Cynara cardunculus prior to delignification |
Autor: | Lourenço, A.; Gominho, J.; Curt, M. D.; Revilla, Eloy CSIC ORCID ; Villar, J. C.; Pereira, H. | Palabras clave: | Cardoon Pre-treatment Organosolv Kraft Py-GC/MS S/G ratio |
Fecha de publicación: | 2017 | Editor: | American Chemical Society | Citación: | Industrial and Engineering Chemistry Research 56(1): 424-433 (2017) | Resumen: | Cardoon (Cynara cardunculus) stalks were submitted to steam explosion (183 °C, 5 min) with a yield of 88% and a lignin loss of around 7%. Cardoon (C) and steam exploded cardoon (CSE) were characterized by wet chemical analysis and Py-GC/MS. Total lignin and its S/G ratio were 21.6% and 1.35 in C and 22.4% and 1.40 in CSE. These samples were delignified by kraft and organosolv processes. Cardoon pulps were obtained with different yields of 45.1% for kraft and 61.2% for organosolv. Kraft pulps yields were 45.1% and 50.9%, respectively, for Câ and CSEâ K, corresponding to a lignin loss of 74.7% and 72.2%. The S/G ratio was similar 1.25 and 1.23. Organosolv pulps presented higher yields (61.2% vs 73.3%) and were less delignified (30.5% vs 13.8%), and the S/G ratio was 1.54 and 1.47, respectively, for Câ áµ£g and CSEâ â áµ£g. Overall, the condition chosen for steam explosion allowed a low mass loss but did not promote delignification and neither enhanced lignin removal during kraft and organosolv processes. | URI: | http://hdl.handle.net/10261/289945 | DOI: | 10.1021/acs.iecr.6b03854 | ISSN: | 0888-5885 | E-ISSN: | 1520-5045 |
Aparece en las colecciones: | (INIA) Artículos |
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