Search for dissertations about: "Harald Brelid"

Found 3 swedish dissertations containing the words Harald Brelid.

2. 1. Nonionic surfactants from kraft lignin

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

   Abstract : .... READ MORE

4. 2. TCF Bleaching of Softwood Kraft Pulp. Metal Management Procedures

   Author : Harald Brelid; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; bleaching; manganese; Kraft pulps; iron; copper; hydrogen peroxide; acid pretreatment; calcium; magnesium; liquid chromatography; ion exchange; metal complexes; EDTA;

   Abstract : The aim of this work has been to increase knowledge of the influence of the metal ion content in softwood kraft pulp on peroxide bleaching and to investigate the effects of different metal management procedures at various stages in the production of TCF pulps (i.e. READ MORE

5. 3. The Use of Lignin Derivatives to Improve Selected Paper Properties

   Author : Stefan Antonsson; Mikael E. Lindström; Gunnar Henriksson; Mats Johansson; Docent Roland Agnemo Tek. Dr. Harald Brelid; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; kraft lignin; black liquor; cross-flow filtration; lignin derivative; kraftliner; oxidative coupling; laccase; manganese; linseed oil; mechano-sorptive creep; kraftlignin; svartlut; tvärsflödesfiltrering; ligninderivat; kraftliner; oxidativ koppling; lackas; mangan; linolja; mekanosorptivt kryp; Cellulose and paper engineering; Cellulosa- och pappersteknik;

   Abstract : Ved består huvudsakligen av tre typer av polymerer, cellulosa, hemicellulosa och lignin. Lignin bildas i naturen genom enzymatiskt initierad oxidativ koppling av tre olika typer av fenylpropan-enheter. Dessa bygger genom olika kol-kol- och kol-syre-bindningar upp en amorf tredimensionell polymer. READ MORE