Influence of enzymatic modification of SC-grade TMP on dewatering and end product characteristics

Antti Oksanen, Anna Suurnäkki, Stina Grönqvist, Jani Lehmonen, Kari Edelmann

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

The target of this research was to monitor the influence of carbohydrate hydrolysis on dewatering and critical end product characteristics in semi pilot trials using a special unique semi pilot machine at VTT Jyväskylä. The surface chemistry of SC -grade thermo-mechanical pulp (TMP) was modified by commercial endoglucanase rich enzyme. According to results, at least 0.5 - 1.0 % of TMP dry weight had to be hydrolysed in order to increase significantly drainage in former section. Depending on the extent of enzymatic treatment paper properties, such as bulk, porosity, smoothness and strength where influenced by the extent of enzymatic actions. Overall, results indicates that enhanced drainage of TMP could be achieved without deterioration in retention and formation values by controlled enzymatic treatment.
Original languageEnglish
Title of host publicationProceedings
Subtitle of host publicationDie österreichische Papierfachtagung, Graz, 23.-24.05.2012
PublisherAPV Graz - Akademischer Papieringenieurs Verein
Publication statusPublished - 2012
MoE publication typeNot Eligible
EventInternational Austrian Paper Conference - Österreichische Papierfachtagung 2012 - Graz, Austria
Duration: 23 May 201224 May 2012

Conference

ConferenceInternational Austrian Paper Conference - Österreichische Papierfachtagung 2012
CountryAustria
CityGraz
Period23/05/1224/05/12

Keywords

  • Enzyme
  • thermomechanical pulp
  • dewatering
  • retention
  • formation
  • strength

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    Oksanen, A., Suurnäkki, A., Grönqvist, S., Lehmonen, J., & Edelmann, K. (2012). Influence of enzymatic modification of SC-grade TMP on dewatering and end product characteristics. In Proceedings: Die österreichische Papierfachtagung, Graz, 23.-24.05.2012 APV Graz - Akademischer Papieringenieurs Verein.