Sökning: "kraft lignin"

Visar resultat 1 - 5 av 122 avhandlingar innehållade orden kraft lignin.

1. 1. 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

3. 2. Towards a pure kraft lignin

   Författare :Rufus Ziesig; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LignoBoost; black liquor; lignin; impurities; purification; carbohydrate; inorganics; precipitation;

   Sammanfattning : The most widely used production method for paper pulp in the world is kraft pulping. In chemical pulping the polymer, lignin, which binds the wood fibres together, is partly depolymerized. This allows the wood fibres to be separated from each other. LÄS MER

4. 3. 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

5. 4. Kraft lignin in phenol formaldehyde resin

   Författare :Birgitta Danielson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; phenol formaldehyde resin; lignin phenol based adhesives; plywood manufacturing; kraft lignin; adhesives;

   Sammanfattning : .... LÄS MER

7. 5. Photochemical reactions of lignin: Opportunities for valorisation

   Författare :Alexander Michael Riddell; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biomass; NMR; Lignin; Photolysis; Photochemistry; Kraft;

   Sammanfattning : Lignin is the second most abundant biopolymer after cellulose and is the largest bio-based source of aromatic compounds. However, its heterogeneous and recalcitrant structure makes it difficult to depolymerise for use in renewable chemicals production. LÄS MER