Sökning: "chemical pretreatment"
Visar resultat 1 - 5 av 36 uppsatser innehållade orden chemical pretreatment.
1. Investigation of Milled Wood Lignin Extraction Using Enzymatic Hydrolysis for Application in Hydrophobic Barriers in the Food Packaging Industry
Master-uppsats, Lunds universitet/Kemiteknik (CI)Sammanfattning : The objective of this report is twofold: to optimise the extraction method of lignin from spruce altering a few process parameters and to investigate the use of lignin as a hydrophobic barrier in food applications. The process used was STEX (steam explosion) pretreatment followed by enzymatic hydrolysis and MWL (milled wood lignin) extraction using a mixture of dioxane-water. LÄS MER
2. Lignin Biorefining: Swelling and activation of fibers for lignin extraction
Master-uppsats, KTH/Fiber- och polymerteknologiSammanfattning : I världens omvandling mot en bioekonomi kommer lignocellulosa material spela en stor roll i ersättningen av fossila resurser. Lignin är den mest tillgängliga källan av förnybara och naturligt förekommande aromatiska ämne och den utgör 15–30% av ved. LÄS MER
3. Biogas Potential in the North of Sweden : Inventory and Techno-Economic Assessment of Substrates for an Increased Biogas Production in Norrbotten
Master-uppsats, Lunds universitet/Kemiteknik (CI)Sammanfattning : Great investments are planned in the north of Sweden the coming years, not the least in the county of Norrbotten where the projects collectively are referred to as the green transition due to the focus on fossil-free techniques. But to be able to secure a sustainable energy supply and reach the goal set by the member states of the European Union of a carbon dioxide neutral union in 2050 the production of alternative energy sources needs to intensify. LÄS MER
4. Vallfoderensilage inverkan på sensorisk och teknologisk kvalité hos griskött
Master-uppsats, SLU/Dept. of Animal Nutrition and ManagementSammanfattning : Vallfoder används i dagsläget i ekologisk grisproduktion för att stimulera naturliga behov såsom t.ex. söka efter föda, vilket bidrar till högre välfärd med färre foderrelaterade störningar och stereotypa beteenden hos grisen. LÄS MER
5. 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 institutionenSammanfattning : 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