A1 Journal article (refereed)
Behavior of Decayed Spruce (Picea abies) during Kraft Pulping (2020)
Halonen, M., & Alen, R. (2020). Behavior of Decayed Spruce (Picea abies) during Kraft Pulping. Paper and Biomaterials, 5(4). https://doi.org/10.12103/j.issn.2096-2355.2020.04.001
JYU authors or editors
Publication details
All authors or editors: Halonen, Markku; Alen, Raimo
Journal or series: Paper and Biomaterials
ISSN: 2096-2355
Publication year: 2020
Volume: 5
Issue number: 4
Publisher: Paper and Biomaterials Editorial Board
Publication country: China
Publication language: English
DOI: https://doi.org/10.12103/j.issn.2096-2355.2020.04.001
Publication open access: Not open
Publication channel open access:
Abstract
This study indicated that by applying an improved classification system to decayed large-diameter Norway spruce (Picea abies) wood, its use as raw material for kraft pulping without loss of pulp quality could be essentially increased. This is based on the fact that although the cooking yield of decayed spruce material which has been sorted according to these new recommendations is somewhat lower and Kappa number higher than those of sound wood material, the greatest part of the decayed stem (the outer part of the stem) contains long-fiber wood material which produces pulp of good quality. Therefore, large-diameter spruce logs can also be separately used, for example, in the manufacture of reinforcement pulp.
Keywords: pulping; raw materials; Norway spruce; decay (matter); decayed wood
Free keywords: kraft pulping; wood decay; fungal decay; softrot
Contributing organizations
Ministry reporting: Yes
Reporting Year: 2020
JUFO rating: 0