We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Chemometric Study on Alkaline Pre-treatments of Wood Chips Prior to Pulping.
- Authors
Lehto, Joni T.; Louhelainen, Jarmo; Pakkanen, Hannu; Malkavaara, Petteri; Kłosińska, Teresa; Drożdżek, Michał; Alén, Raimo
- Abstract
Alkaline pre-treatments were performed for the production of organicscontaining effluents from silver/white birch (Betula pendula/pubescens) and Scots pine (Pinus sylvestris) chips prior to chemical pulping. Pretreatment conditions were varied with respect to time (from 30 min to 120 min), temperature (130 °C and 150 °C), and alkali charge (1, 2, 3, 4, 6, and 8% of NaOH on oven-dried wood). The analytical data (total content, weight average molar mass, and molar mass distribution) on dissolved lignin were subjected to principal component analysis to examine the relationship between molar mass and molar mass distributions in lignin removed from different wood species under varying alkaline pre-treatment conditions. Using this method, differences between the wood species and effects of the various pre-treatment process variables (i.e., time, temperature, and alkali charge) were determined.
- Subjects
CHEMOMETRICS; WOOD chips; PULPING; ALKALINITY; EUROPEAN white birch; SCOTS pine
- Publication
BioResources, 2016, Vol 11, Issue 2, p4621
- ISSN
1930-2126
- Publication type
Article
- DOI
10.15376/biores.11.2.4621-4632