Sökning: "biofuel"

Visar resultat 16 - 20 av 210 avhandlingar innehållade ordet biofuel.

  1. 16. Process Industry Energy Projects in a Climate Change Conscious Economy

    Författare :Anders Ådahl; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; process Integration; pulp mill; Nordic countries; energy market; climate policy; CO2; energy savings; biofuel;

    Sammanfattning : Most industrial process plants consume large amounts of energy (usually in the form of steam and electricity) to produce demanded goods, such as beer or paper. However, combustion of fossil fuels has negative external effects on the Earths climate. LÄS MER

  3. 17. Sustainable production of bio-energy products in the sawmill industry

    Författare :Anna Vidlund; KTH; []
    Nyckelord :sawmill industry; energy efficiency; heat recovery; integration; biofuel; upgrading; district heating; fuel pellets; CHP; VOC; CO2;

    Sammanfattning : One of the great challenges facing society is to convert theglobal energy system to a sustainable process. Currently, 80%of the world´s energy is supplied through the combustionof fossil fuels. Not only are the fossil resources limited, theutilisation also increases the level of greenhouse gases in theatmosphere. LÄS MER

  4. 18. Rational bioenergy utilisation in energy systems and impacts on CO2emissions

    Författare :Bertil Wahlund; KTH; []
    Nyckelord :CO2 reduction; energy system; biofuel; CHP; refining; fuel pellets; ethanol; methanol; DME; fuel substitution; sewage water; nitrification;

    Sammanfattning : The increased concentration of greenhouse gases in theatmosphere, in particular CO2, is changing the Earth’s climate. Accordingto the Kyoto protocol, where the international community agreedon binding emission targets, developed countries are committedto reduce their greenhouse gas emissions. LÄS MER

  5. 19. The Economics of Biofuel Development : Policy Incentives and Market Impacts

    Författare :Elina Bryngemark; Patrik Söderholm; Jussi Lintunen; Luleå tekniska universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economics; Nationalekonomi;

    Sammanfattning : This thesis examines the economics of biofuel development by studying the forest raw material market impacts of increased biofuel production, as well as the role of specific policy incentives. Paper [I] presents an economic assessment of two different developments – both implying an increased demand for forest ecosystem services – and how these could affect the competition for forest raw materials. LÄS MER

  7. 20. Characterisation of organic materials from incineration residues

    Författare :Inger Johansson; Anna Ledin; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ash; biofuel; waste; residues; MSWI; incineration; leaching; organic carbon; organic acids; polycyclic aromatic hydrocarbons; PAH; Chemistry; Kemi; Kemi; Chemistry;

    Sammanfattning : The organic material present in incineration residues has been examined. Water leachable organic material was characterised and classified into hydrophilic and hydrophobic acids, neutrals and bases. Changes of the organic material during weathering were followed. LÄS MER