Sökning: "delignification"
Visar resultat 6 - 10 av 58 avhandlingar innehållade ordet delignification.
6. The initial phase of the sodium bisulfite pulping of softwood dissolving pulp
Sammanfattning : The sulfite pulping process is today practised in only a small number of pulp mills around the globe and the number of sulfite mills that use sodium as the base (cation) is less than five. However, due to the increasing interest in the wood based biorefinery concept, the benefits of sulfite pulping and especially the sodium based variety, has recently gained a lot of interest. LÄS MER
7. On the Interrelation Between Kraft Cooking Conditions and Pulp Composition
Sammanfattning : In the early 1990’s, a lot of work was focused on extending the kraft cook to a low lignin content (low kappa number). The driving force was the need to further reduce the environmental impact of the bleaching, as less delignification work would be needed there. LÄS MER
8. Mass Transport in Wood Disintegration: Implications for the Pulp and Paper Industry
Sammanfattning : Efficient delignification and fractionation processes are essential in the pulp and paper industry. Mass transport events in wood fractionation are of great importance, specifically in two main stages, namely, the mass transport of chemicals into wood and the mass transport of degraded lignin molecules out of cellulose confinements. LÄS MER
9. Further insights into kraft cooking kinetics
Sammanfattning : .... LÄS MER
10. Kraft pulping - Reaction kinetics of lignin and hexenuronic acid in softwood
Sammanfattning : .... LÄS MER