Sökning: "ionic strength"

Visar resultat 11 - 15 av 178 avhandlingar innehållade orden ionic strength.

  1. 11. On the Interrelation Between Kraft Cooking Conditions and Pulp Composition

    Författare :Catrin Gustavsson; Mikael E. Lindström; Jorge Colodette; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Delignification; Kraft pulping; Residual phase lignin; Hydroxide; Hydrogen sulphide ion; Ionic strength; Temperature; Bleachability; Hexenuronic acid; Carbohydrates; Cellulose and paper engineering; Cellulosa- och pappersteknik;

    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

  3. 12. Kraft pulping - Reaction kinetics of lignin and hexenuronic acid in softwood

    Författare :Johannes Bogren; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; DWC; Reaction kinetics; LCC; Hexenuronic acid; Mass transfer resistance; Ionic strength; Softwood; Delignification; Kraft pulping;

    Sammanfattning : .... LÄS MER

  4. 13. Hydrogels based on hardwood hemicelluloses

    Författare :Inge Gabrielii; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hardwood hemicellulose; pH; Characterization; Chitosan; Swelling; Hydrogel; Ionic strength; Xylan;

    Sammanfattning : .... LÄS MER

  5. 14. Some aspects on the physical chemistry of kraft lignins in aqueous solutions : Theoretical considerations and practical implications

    Författare :Magnus Norgren; Mittuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; kraft pulping; kraft lignin; phenolic groups; dissociation; pKa; molecular weight; temperature; ionic strength; pOH; polydispersity; coagulation; Poisson-Boltzmann; DLVO; Chemistry; Kemi;

    Sammanfattning : .... LÄS MER

  7. 15. On the bleachability of alkaline pulps. The influence of residual lignin structure

    Författare :Waleed Wafa Al-Dajani; KTH; []
    Nyckelord :B-O-4; bleachability; hexenuronic acid; hydrogen peroxide; hydrosulfide ion; hydroxyl ion; ionic strength; residual lignin.;

    Sammanfattning : .... LÄS MER