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Kraft pulping of Drimys winteri wood chips biotreated with Ganoderma australe

✍ Scribed by Heriberto Franco; Juanita Freer; Jaime Rodríguez; Jaime Baeza; Juan Pedro Elissetche; Régis Mendonça

Publisher
Wiley (John Wiley & Sons)
Year
2006
Tongue
English
Weight
104 KB
Volume
81
Category
Article
ISSN
0268-2575

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✦ Synopsis

Abstract

Drimys winteri, a native hardwood from Chile, presents some interesting characteristics that make it suitable for the pulp and paper industry. In this work, the potential of D winteri for the conventional kraft and biokraft pulp production was evaluated. For biokraft pulping, wood chips were biotreated with the white‐rot fungus Ganoderma australe. During the biotreatment, a selective pattern of biodelignification was observed and the wood chips biotreated for 15, 30 and 45 days were submitted to kraft cooking. At low cooking severity (H‐factor below 1500 h^−1^, 15% active alkali and 25% sulfidity), all biopulps presented lower kappa numbers than control pulps and approximately the same screened pulp yield. Biopulps were easily refined in a PFI mill, requiring less PFI revolutions to achieve the same fibrillation degree. The strength properties of the biopulps were similar to those of the control pulps. Copyright © 2005 Society of Chemical Industry

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