Sökning: "lignin modification"

Visar resultat 1 - 5 av 41 avhandlingar innehållade orden lignin modification.

  1. 1. Viscosity and boiling point elevation of black liquor from the lignin extraction process and the modification of extracted lignin

    Författare :Ali Seid Moosavifar; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Boiling point elevation; viscosity; Lignin precipitation; Black liquor; black liquor properties; evaporation characteristic; combustion of lignin; Lignin; calcium addition to lignin; alkalisation of black liquor; lignin modification; lignin fuel;

    Sammanfattning : .... LÄS MER

  3. 2. Lignin Extraction from Black Liquor - Properties of the Liquors and Sulphur Content in the Lignin

    Författare :Ali Seid Moosavifar; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; heat-treatment; lignin precipitation; boiling point elevation; lignin; alkalisation; biofuel; properties; viscosity; Black liquor; combustion of lignin; lignin modification; viscosity correlations.;

    Sammanfattning : Kraft lignin isolated by precipitation can be considered as being a valuable renewable source of energy and material. Removing lignin from black liquor is also advantageous as it decreases the load on the recovery boiler, which is usually the limiting factor in the production of kraft pulp. LÄS MER

  4. 3. Biosynthesis, interactions, and structure of native lignin

    Författare :Ioanna Sapouna; Lauren S. McKee; Francisco Vilaplana; Claudia Crestini; KTH; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; lignin; biomass valorization; extraction; tissue culture; lignin nanoparticles; wood aerogels; lignin; biomassavalorisering; extraktion; vävnadsodling; lignin nanopartiklar; trä aerogeler; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : Wood biomass is an important resource in the development ofstrategies towards replacement of fossil-based materials. Woodcomprises cellulose, hemicelluloses and lignin, in amounts thatvary between species. LÄS MER

  5. 4. Nonionic surfactants from kraft lignin

    Författare :Harald Brelid; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; modification; fractionation; depressant; epoxide; kraft lignin; nonionic surfractant; dispersant; adsorption; kaolin; talc;

    Sammanfattning : .... LÄS MER

  7. 5. Deepening the insights of lignin structure : Lignin-carbohydrate complex (LCC) fractionation and characterization and Kraft lignin amination

    Författare :Xueyu Du; Jiebing Li; Mikael Lindström; Jussi Sipilä; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Improvement of kraft pulping delignification efficiency and value-addition of industrial kraft lignin are two attractive topics. The proposal that delignification is deteriorated by the presence of lignin-carbohydrate complex (LCC) is still being debated. LÄS MER