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Artículo

Dissolving pulps by oxidation of the cellulosic fraction of lignocellulosic waste

Ehman, Nanci VanesaIcon ; Rodriguez Rivero, Gustavo; Area, Maria CristinaIcon ; Felissia, Fernando Esteban
Fecha de publicación: 12/2017
Editorial: Editura Acad Romane
Revista: Cellulose Chemistry And Technology
ISSN: 0576-9787
e-ISSN: 2457-9459
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ingeniería Química

Resumen

The cellulosic fractions of Eucalyptus sp. sawdust pulp and of sugarcane bagasse pulp, which have been subjected to hydrothermal and alkaline treatments, were purified by oxidative means (oxygen and ozone followed by an alkaline extraction) to obtain dissolving pulp. The properties of the obtained pulps were evaluated and compared with commercial dissolving pulps. Eucalyptus sawdust pulp achieved 70% delignification after oxygen treatment and Kappa number was 5.8. Sugarcane bagasse pulps achieved 83% delignification and kappa number of 8.7. Intrinsic viscosities within the range of dissolving grade pulps specifications were obtained in experiences for eucalyptus sawdust pulp. Higher values than required were obtained for sugarcane bagasse pulp. Retained in 18% alkali were within the range of dissolving grade pulp specifications, being the highest values those in experiences where alkaline extraction was in absence of hydrogen peroxide. Hydrogen peroxide addition in alkaline extraction produced high solubility values in both kinds of pulps.
Palabras clave: Eucalyptus Sp. Sawdust , Sugarcane Bagasse , Dissolving Pulp , Biorefinery
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/44494
URL: http://www.cellulosechemtechnol.ro/downloadfirstonline.php?file=8113
Colecciones
Articulos(IMAM)
Articulos de INST.DE MATERIALES DE MISIONES
Citación
Ehman, Nanci Vanesa; Rodriguez Rivero, Gustavo; Area, Maria Cristina; Felissia, Fernando Esteban; Dissolving pulps by oxidation of the cellulosic fraction of lignocellulosic waste; Editura Acad Romane; Cellulose Chemistry And Technology; 51; 9-10; 12-2017; 863-870
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