| Titre : | Optimization of galactoglucomannans and acidic arabinans recovery in softwood (2012) |
| Auteurs : | Lyne Desharnais, Auteur ; Fang Du, Auteur ; Nicolas Brosse, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 50 N° 24, Décembre 2011) |
| Article en page(s) : | pp. 14217-14220 |
| Note générale : | Chimie industrielle |
| Langues : | Anglais |
| Tags : | Softwood Optimization |
| Résumé : | Autohydrolysis of softwood chips, used as raw material in a paper mill, was studied to simulate one of the aspects of industrial hydrolytic steps of a thermomechanical pulping process. The compositions of the pulps and of the hydrolysates were determined as a function of the residence time and the severity of the treatment. It was found that acidic arabinogalactans were largely affected and depolymerized, even at low severity (log(R0) < 2). The percentage of residual arabinans in the pulp after hydrolysis seemed be a good indicator of the severity of the treatment and can provide an effective guide for an optimization of the industrial process. A hydrolytic step performed at a severity oflog(R0) = 1.8 resulted in the extraction of∼ 100% of the water-soluble acidic arabinogalactans, which constitutes the main part of the αanionic trash" released in mechanical pulping. |
| DEWEY : | 660 |
| ISSN : | 0888-5885 |
| En ligne : | http://cat.inist.fr/?aModele=afficheN&cpsidt=25299893 |
