Alkaline peroxide mechanical pulping of novel Brazilian Eucalyptus hybrids

M.C. dos S. Muguet, J.L. Colodette, Anna-Stiina Jääskeläinen

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

Eucalyptus wood is among the most important biomass resource in the world. Wood mechanical defibration and fibrillation are energy-intensive processes utilized not only to produce pulp for papermaking, but also to produce reinforcement fibers for biocomposites, nanocellulose, or pretreat lignocellulosic material for biofuels production. The structural features of different Eucalyptus hybrids affecting the refining energy consumption and produced fiber furnish properties were evaluated. The defibration and fiber development were performed using an alkaline peroxide mechanical pulping (APMP) process, which included chelation followed by an alkaline peroxide treatment prior to wood chip defibration. Despite the similar wood densities and chemical compositions of different Eucalyptus hybrids, there was a clear difference in the extent of defibration and fibrillation among the hybrids. The high energy consumption was related to a high amount of guaiacyl lignin. This observation is of major importance when considering the optimal wood hybrids for mechanical wood defibration and for understanding the fundamental phenomena taking place in chemi-mechanical defibration of wood.
Original languageEnglish
Pages (from-to)3823-3836
Number of pages13
JournalBioResources
Volume7
Issue number3
Publication statusPublished - 2012
MoE publication typeA1 Journal article-refereed

Keywords

  • Alkaline peroxide mechanical pulping
  • APMP
  • defibration
  • energy consumption
  • Eucalyptus
  • hybrids
  • lignin structure
  • pulp properties

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