Sökning: "lic Karlstad"

Visar resultat 1 - 5 av 241 avhandlingar innehållade orden lic Karlstad.

  1. 1. Ethanol from lignocellulose Alkali detoxification of dilute-acid spruce hydrolysates

    Detta är en avhandling från Karlstad : Karlstad University

    Författare :Björn Alriksson; Karlstads universitet.; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES Chemistry Biochemistry; NATURVETENSKAP Kemi Biokemi; Kemi; Chemistry;

    Sammanfattning : Detoxification of dilute-acid lignocellulose hydrolysates by treatment with Ca(OH)2 (overliming) efficiently improves the production of fuel ethanol, but is associated with drawbacks like sugar degradation and CaSO4 precipitation. In factorial designed experiments, in which pH and temperature were varied, dilute-acid spruce hydrolysates were treated with Ca(OH)2, NH4OH or NaOH. LÄS MER

  2. 2. Carbohydrate degradation and dissolution during Kraft cooking Modelling of kinetic results

    Detta är en avhandling från Karlstad : Karlstad University

    Författare :Dan Johansson; Karlstads universitet.; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Chemical engineering; TEKNIKVETENSKAP Kemiteknik; Chemical Engineering; Kemiteknik; Kraft cooking; softwood; hardwood; cellulose; xylan; glucomannan; degradation; dissolution;

    Sammanfattning : Chemical pulp fibres from wood are commonly used in products associated with packaging as well as with printing and writing. The prevalent way of liberating fibres is by subjecting wood chips to Kraft cooking. This process has a history of almost 130 years and should be both well described and well established. LÄS MER

  3. 3. Capillary electrophoresis of beta2-glycoprotein I Method development and binding studies

    Detta är en avhandling från Karlstad

    Författare :Maria E. Bohlin; Karlstads universitet.; Karlstads universitet.; Karlstads universitet.; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Kemi; Chemistry;

    Sammanfattning : .... LÄS MER

  4. 4. Embedding Theorems for Mixed Norm Spaces and Applications

    Detta är en avhandling från Karlstad : Karlstad University

    Författare :Robert Algervik; Karlstads universitet.; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; mixed norms; embeddings; rearrangements; anisotropic fractional Sobolev spaces; anisotropic Besov spaces; mixade normer; inbäddningar; omarrangeringar; anisotropa fractionära Sobolev rum; anisotropa Besov rum; MATHEMATICS; MATEMATIK; Matematik; Mathematics;

    Sammanfattning : This thesis is devoted to the study of mixed norm spaces that arise in connection with embeddings of Sobolev and Besov type spaces. The work in this direction originates in a paper due to Gagliardo (1958), and was continued by Fournier (1988) and by Kolyada (2005).We consider fully anisotropic mixed norm spaces. LÄS MER

  5. 5. Extended Mercerization Prior to Carboxymethyl Cellulose Preparation

    Detta är en avhandling från Karlstad : Karlstad University

    Författare :Heléne Almlöf; Karlstads universitet.; [2010]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Carboxymethyl cellulose; Mercerization; DS; FT Raman spectroscopy; Filtration ability; TECHNOLOGY Chemical engineering; TEKNIKVETENSKAP Kemiteknik; Chemical Engineering; Kemiteknik;

    Sammanfattning : Carboxymethyl cellulose (CMC) is produced commercially in a two-stage process consisting of a mercerization stage, where the pulp is treated with alkali in a water alcohol solution, followed by an etherification stage in which monochloroacetic acid is added to the pulp slurry. In this thesis an extended mercerization stage of a spruce ether pulp was investigated where the parameters studied were the ratio of cellulose I and II, concentration of alkali, temperature and retention time. LÄS MER