Sökning: "bark biorefinery"

Hittade 5 uppsatser innehållade orden bark biorefinery.

  1. 1. Analysis and Valorization of Bark from Silver Birch, Scots Pine, and Norway Spruce : Compositional analysis of bark from common Swedish trees in forestry, to optimize sustainability procedures and monetary value of bark residue

    Kandidat-uppsats, Umeå universitet/Kemiska institutionen

    Författare :Isak Lindbäck; [2022]
    Nyckelord :;

    Sammanfattning : Silver birch, Scots pine, and Norway spruce are the three most common types of trees in Sweden and make up to 90% of standing volume in Swedish forests (Skogsstyrelsen 2015, 3). With millions of cubic meters of wood being cut down annually, bark and other residues that cannot be used for sawn timber is left over and burnt for energy. LÄS MER

  3. 2. Spruce bark biorefinery

    Kandidat-uppsats, KTH/Fiber- och polymerteknologi

    Författare :Leon Ahlström; Rebecca Mattsson; Hampus Eurén; Alicia Lidén; [2021]
    Nyckelord :Norway spruce bark; bark biorefinery; extractives; cellulose; lignin; non-cellulose; polysaccharides; soxhlet extraction; hot-water extraction; organosolv extraction; PAA; delignification; carbohydrate analysis; 2D HSQC-NMR and FTIR; Granbark; bark bioraffinaderi; lignin; organosolv extraktion; hot-water extraktion;

    Sammanfattning : Spruce Bark contains several fundamental main substances; lignin, non-cellulose polysaccharides, cellulose and extractives. This undergraduate study focuses on developing a process to extract each of these components from spruce bark using a biorefinery concept, with a main focus on extracting lignin without degradation. LÄS MER

  4. 3. Liquefaction of Softwood Bark towards Biochemicals and Biofuels

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Emma Nordström; [2018]
    Nyckelord :Softwood; Bark; Liquefaction; Hytrotropic acid; Lignin; Biofuel; Bio-oil; Spruce; Catalyst; Zeolite;

    Sammanfattning : The energy consumption in the world is increasing at the same time as the fossil fuel resources are limited. This is causing a rising interest in renewable energy sources over the world. To reduce dependency on fossil fuel sources biomass is an excellent alternative. LÄS MER

  5. 4. Integration of hydrothermal processes on a forest-based biorefinery site

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för tillämpad fysik och elektronik

    Författare :Linnea Häreskog; [2018]
    Nyckelord :hydrothermal carbonization; HTC; integration; biorefinery; biosludge; pulp and paper industry;

    Sammanfattning : The pulp and paper industry (PPI) is a business that produce large amounts of residues annually. Besides bark, large quantities of sludge are produced from the various parts of the industrial process. LÄS MER

  7. 5. Hydrophobic Coating on Cellulosic Textile Material by Betulin and a Betulin Based Polymer

    Master-uppsats, Linnéuniversitetet/Institutionen för skog och träteknik (SOT)

    Författare :Tianxiao Huang; [2016]
    Nyckelord :Betulin; biorefinery; cellulose; contact angle; copolymer; hydrophobicity; marketing strategy; standard spray test; textile fibers; water repellency.;

    Sammanfattning : Betulin is a naturally abundant compound in the outer bark of birch and can be easily obtained by solvent extraction. Herein, solutions of betulin were used to treat cellulosic textile fibers and improve their water repellency. Cotton fabrics impregnated in a 7. LÄS MER