Sökning: "Niklas Westerberg"

Hittade 2 avhandlingar innehållade orden Niklas Westerberg.

  1. 1. Chromatographic separation of wood constituents

    Författare :Niklas Westerberg; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Hot water extracted Norway spruce was fractionated by cross flow filtration followed by two stages of hydrophobic adsorption with increasing hydrophobic selectivity. Three fractions were recovered and characterized by Klason and sugar content and by size exclusion measurements of enzymatically hydrolyzed samples, revealing species covalently bound to carbohydrates. LÄS MER

  2. 2. Chromatographic separation of wood constituents

    Författare :Niklas Westerberg; [2014]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biorefinery; mathematical modelling.; Norway spruce; separation; chromatography;

    Sammanfattning : In a modern kraft pulp mill only about 45 % of the incoming wood is present in the pulp and it is mainly composed of cellulose. The remainder of the wood, which is dissolved in order to liberate the cellulose fibres, e.g., hemicellulose and lignin, ends up in the mill´s recovery boiler to recover the latent energy. LÄS MER