Please use this identifier to cite or link to this item:
|Type:||Artigo de evento|
|Title:||Xylanase-aided Tcf Bleaching Of Eucalyptus Grandis Kraft Pulp: Comparative Study Of Pre- And Non-oxygenated Pulps|
|Author:||Angelo Raquel S.|
|Abstract:||A TCF (Xylanase-Ozone-Hydrogen Peroxide-XZP) bleaching sequence on two Eucalyptus grandis kraft pulps with pre- and non-oxygenated treatment was applied. During the bleaching of non-oxygenated pulps two different induced enzymes and distinct enzymatic charges were used. The pulps were characterized by kappa number, viscosity, ISO-brightness, glucose, xylose and metals contents. The soluble lignin and sugar contents in the effluents also were determined. The results indicated a positive enzymatic effect on pulp bleaching in both cases with the most expressive differences between xylanase-treated pulps and their respective controls found on non-oxygenated pulps. The same study did not detect any important improvement on pulp bleachability when the enzymatic charge or incubation time with the enzyme were increased. Finally, in the Eucalyptus grandis kraft pulp the eucalyptus induced enzyme appears more active on TCF sequence than in the birch one.|
|Editor:||CPPA, Montreal, Canada|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.