Sökning: "hemicellulose recovery"

Visar resultat 1 - 5 av 14 avhandlingar innehållade orden hemicellulose recovery.

  1. 1. Wood hydrolysate Barriers

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Anas Ibn Yaich; KTH.; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wood hydrolysate; xylan; hemicellulose; layered silicates; oxygen barrier; packaging; film; coaing; birch.;

    Sammanfattning : Wood hemicellulose is an abundant but fairly unexploited renewable feedstock. Recent studies have shown that hemicelluloses have a large potential for use in the food packaging industry as a sustainable alternative to the conventional oxygen-barrier materials used today. LÄS MER

  2. 2. Selective Separation Of Wood Components In Internal Process Waters Originating From Mechanical Pulping

    Detta är en avhandling från Sundsvall : Mid Sweden University

    Författare :Dariusz Zasadowski; Mittuniversitetet.; [2014]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; flotation; foaming agents; chelating surfactant; TMP process water; pitch control; internal cleaning stage; hemicellulose recovery; anti?solvents; solvents; precipitation;

    Sammanfattning : Dissolved and Colloidal substances (DSC) and metals are released from woodduring thermomechanical pulp (TMP) production. These components have atendency to accumulate in process waters, as the water circulation systems inintegrated paper mills are closed. LÄS MER

  3. 3. Hemicelluloses from Agricultural and Forestry Crops Isolation, Characterisation, and Enzymatic Hydrolysis

    Detta är en avhandling från Department of Biochemistry, Lund University

    Författare :Alexandra Andersson; Lund University.; Lunds universitet.; [2007]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Proteiner; enzymologi; Physical chemistry; Fysikalisk kemi; enzymology; hydrogels; Plant biochemistry; Växtbiokemi; Proteins; a-galactosidase; b-mannanase; hemicellulase; corn fibre; barley husks; spruce; size-exclusion chromatography; arabinoxylan; microwave irradiation; steam pretreatment; membrane filtration; hemicellulose; galactoglucomannan;

    Sammanfattning : Hemicelluloses are tremendous sources of renewable raw materials, which utilisation have the potential to be highly increased in the future. Hemicelluloses are among the major groups of compounds in plant cell walls, together with cellulose and lignin. These three components are closely associated, making them difficult to separate from each other. LÄS MER

  4. 4. Separation of Biomass Components by Membrane Filtration - Process Development for Hemicellulose Recovery

    Detta är en avhandling från Lund University

    Författare :Holger Krawczyk; Lund University.; Lunds universitet.; [2013]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biomass; hemicelluloses; pulp mill process water; alkaline extract; membrane filtration;

    Sammanfattning : One of the major challenges facing the world today is the reduction of our dependency on fossil resources as their exploitation has severe negative effects on the environment. One way of realizing this is to utilise the components of lignocellulosic biomass to a greater extent as feedstock for various industrial products. LÄS MER

  5. 5. Recovery of Hemicelluloses Extracted from Spruce and Wheat Bran : Membrane Filtration Process Development and Cost Estimates

    Detta är en avhandling från Department of Chemical Engineering, Lund University

    Författare :Johan Thuvander; Lund University.; Lunds universitet.; [2018]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hemicelluloses; Membrane filtration; Galactoglucomannan; Arabinoxylan; Microfiltration; Ultrafiltration; Spruce; Wheat bran; Hemicellulosa; Membranfiltrering; Mikrofiltrering; Ultrafiltrering; Arabinoxylan; Galactoglucomannan; Gran; Vetekli;

    Sammanfattning : Hemicelluloses are a group of abundant polymers found in all plants and constitute about one third of the total plant biomass. These polymers can be used in many different products, such as oxygen barrier films, emulsifiers, foams and probiotic food additives. LÄS MER