Sökning: "råvaror"

Visar resultat 1 - 5 av 81 avhandlingar innehållade ordet råvaror.

  1. 1. Catalytic conversion of biomass-derived synthesis gas to liquid fuels

    Författare :Rodrigo Suárez París; Magali Boutonnet; Agustín Martínez Feliu; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biofuels; Fischer-Tropsch wax; higher alcohols; hydroconversion; kinetic modelling; methanol cofeeding; microemulsion; MoS2; noble metal; syngas; Chemical Engineering; Kemiteknik;

    Sammanfattning : Climate change is one of the biggest global threats of the 21st century. Fossil fuels constitute by far the most important energy source for transportation and the different governments are starting to take action to promote the use of cleaner fuels. LÄS MER

  3. 2. Exploring the Use of Terpenes as Renewable Polymer Feedstock

    Författare :Arne Stamm; Per-Olof Syrén; Nico Bruns; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bio-based polymers; terpenes; α-pinene; sobrerol methacrylate SobMA ; verbanone lactone VaL ; 1- 1 -hydroxyethyl -3- 2 -hydroxyethyl -2; 2- dimethylcyclobutane HHDC .; Kemi; Chemistry;

    Sammanfattning : Rising environmental awareness and responsibility has increased the demand for novel,  bio-based  sustainable  materials.  Therefore,  there  is  an  extensive  need  to research  and  develop  closed-loop  materials  from  novel  feedstocks  that  can  be generated  using  benign,  environmentally  friendly  synthetic  routes. LÄS MER

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

    Författare :Holger Krawczyk; Avdelningen för kemiteknik; []
    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. 4. Developments in Feedstock Analysis and Process Control for Biogas Production

    Författare :Sten Strömberg; Bioteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Anaerobic digestion; Process control; Biochemical Methane Potential; Process analysis; Feedstock; Biogas;

    Sammanfattning : A sustainable treatment of organic wastes, generation of renewable energy, reduction of green house gas emissions, limiting the eutrophication and closing the nutrient cycles are several environmental challenges for which anaerobic digestion may be a suitable solution. There is today a large amount of available organic waste materials that could serve as potential feedstock for biogas production. LÄS MER

  7. 5. Enzyme catalysis towards bio-based UV-curable buildingblocks

    Författare :Maja Finnveden; Mats Martinelle; Katja Loos; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Enzyme; Enzymatic Polymerizations; Biocatalysis; Lipase; CalB; MsAcT; Substrate specificity; Selectivity; Polymer Chemistry; UV-curring; Bioteknologi; Biotechnology;

    Sammanfattning : Polymeric materials are found in virtually all areas of daily life; they are found in everything from packages keeping our food safe to the buildings where we spend our days, and the production is a worldwide industry. Although polymeric materials play a big part in sustainable solution’s, a lot can be done to develop more environmental methods for producing them. LÄS MER