Enhancing dewatering of thermo-mechanical pulp (TMP) based papermaking through enzymatic treatment

Antti Oksanen, Kari Edelmann, Janne Kataja-aho, Anna Suurnäkki

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)

Abstract

The aim of this work was to improve the dewatering characteristics of thermo-mechanical pulp (TMP) through enzymatic treatment without any significant reduction of the quality of the end product. The cellulose and hemicellulose content of TMP was altered by means of enzymatic treatments using different purified cellulases and hemicellulases as well as commercial enzyme preparations, in order to clarify the target carbohydrate components affecting the dewatering of TMP. The effects of enzymatic treatments on the properties of the pulp as well as its forming, pressing and drying were studied by lab scale measurements. An increased dewatering rate of TMP was observed in initial drainage, wet pressing and drying laboratory experiments, as a result of various enzymatic treatments. Interestingly, both cellulose and galactoglucomannan components in TMP were found to affect the dewatering properties of the pulp, and a greatest improvement in dewatering could be obtained with a combined treatment with an endoglucanase type of cellulase and mannanase.
Original languageEnglish
Pages (from-to)787-795
Number of pages9
JournalHolzforschung
Volume65
Issue number6
DOIs
Publication statusPublished - 2011
MoE publication typeA1 Journal article-refereed

Keywords

  • cellulose
  • dewatering
  • endoglucanase
  • enzymatic treatment
  • glucomannan
  • paper machine
  • runnability
  • thermo-mechanical pulp (TMP)
  • wet strength
  • xylan

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