Sökning: "Sodium hydroxide"

Visar resultat 1 - 5 av 47 avhandlingar innehållade orden Sodium hydroxide.

  1. 1. Pretreatment of bagasse with sodium hydroxide and hydrogen peroxide in chemimechanical pulping

    Detta är en avhandling från Chalmers University of Technology

    Författare :Fuhua Peng; Chalmers tekniska högskola.; Chalmers University of Technology.; [1990]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bagasse; chemi-mechanical pulp; newsprint; impregnation; pretreatment; sodium hydroxide; hydrogen peroxide; pulp properties; specific energy; bryghtness;

    Sammanfattning : .... LÄS MER

  2. 2. Electrochemical generation of polysulfide liquor and sodium hydroxide from white liquor

    Detta är en avhandling från Stockholm : KTH

    Författare :Mårten Behm; KTH.; [1998]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; White liquor; Kraft pulping; Polysulfides; Sodium hydroxide; Electrolysis; Autocatalysis; Cation-selective membranes; DSA; Nickel; Graphite; NATURAL SCIENCES Chemistry Analytical chemistry Electrochemistry; NATURVETENSKAP Kemi Analytisk kemi Elektrokemi;

    Sammanfattning : .... LÄS MER

  3. 3. High-yield chemimechanical pulping of bagasse

    Detta är en avhandling från Chalmers University of Technology

    Författare :Fuhua Peng; Chalmers tekniska högskola.; Chalmers University of Technology.; [1991]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bagasse; chemimechanical pulping; impregnation; pretreatment; sodium hydroxide; sodium sulfite; hydrogen peroxide; paper properties; specific energy; bleaching; newsprint;

    Sammanfattning : .... LÄS MER

  4. 4. Some aspects on TCF-bleachability of softwood alkaline pulps

    Detta är en avhandling från Stockholm : KTH

    Författare :Karin Sjöström; KTH.; [1999]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bleachability; chlorine-free bleaching; softwoods; kraft pulps; alkaline sulfite pulps; oxygen; hydrogen peroxide; ozone; hydrogen sulfide ion; hydroxide ion; temperature; sodium ion.; TECHNOLOGY Chemical engineering Chemical process and manufacturing engineering Cellulose and paper engineering; TEKNIKVETENSKAP Kemiteknik Kemisk process- och produktionsteknik Cellulosa- och pappersteknik;

    Sammanfattning : The bleachability of softwood oxygen delignified pulps has been studied, i.e. the ease (requirement of bleaching chemicals) with which the pulps can be brightened to a target brightness in totally chlorine free (TCF) bleaching stages, including hydrogen peroxide, ozone and chelating agent stages. LÄS MER

  5. 5. On the Interrelation Between Kraft Cooking Conditions and Pulp Composition

    Detta är en avhandling från Stockholm : KTH

    Författare :Catrin Gustavsson; KTH.; [2006]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Delignification; Kraft pulping; Residual phase lignin; Hydroxide; Hydrogen sulphide ion; Ionic strength; Temperature; Bleachability; Hexenuronic acid; Carbohydrates; TECHNOLOGY Chemical engineering Chemical process and manufacturing engineering Cellulose and paper engineering; TEKNIKVETENSKAP Kemiteknik Kemisk process- och produktionsteknik 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