Search for dissertations about: "bioenergy crops"

Showing result 1 - 5 of 32 swedish dissertations containing the words bioenergy crops.

  2. 1. On Food Price Implications from Expanded Bioenergy Production

    Author : David Bryngelsson; Chalmers tekniska högskola; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; food price effects; Sub-Saharan Africa; partial equilibrium model; bioenergy; staple crops; land use competition; household survey;

    Abstract : Bioenergy has been put forward as a solution to energy security and at the same time to climate change. It is, however, dependent on productive agricultural land, which is a limited resource. READ MORE

  4. 2. Perspectives on bioenergy futures - International bioenergy trade and bioenergy expansion in a European policy context

    Author : Julia Hansson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Sweden; policy; CO2 credits; bioenergy trade; EU; biofuels; biofuels for transport; bioenergy; energy systems model; biomass; electricity;

    Abstract : Biomass can be used to substitute the use of fossil fuels in the energy system. Presently, the use of biomass is being promoted in Sweden and the rest of the EU by targets and policies. READ MORE

  5. 3. Prospects for Bioenergy in Europe - Supply, Demand and Trade

    Author : Karin Ericsson; Miljö- och energisystem; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energiforskning; Energy research; biofuel trade; perennial energy crops; co-firing; bioenergy policy; biomass production cost; potential biomass supply; Bioenergy; Europe;

    Abstract : Renewable energy sources (RES), such as biomass, can be used to address two important issues in Europe: climate change and energy security. If biomass is produced sustainably and used efficiently, bioenergy contributes very little to CO2 emissions. READ MORE

  6. 4. Process development for combined pentose and hexose fermentation

    Author : Fredrik Nielsen; Avdelningen för kemiteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bioethanol; Lignocellulose; Xylose fermentation; Co-fermentation; Process design; Agricultural residues; Saccharomyces cerevisiae;

    Abstract : Second-generation ethanol from lignocellulose is a sustainable alternative that can partially replace fossil fuels. To be competitive with first generation ethanol from sugar and starch crops and fossil fuels, the conversion efficiency and ethanol yields of second-generation ethanol conversion processes must be improved. READ MORE

  7. 5. Sustainable Energy Conversion from Biomass Waste Combustion

    Author : Maulana Nugraha; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; particle modelling; furnace; particulate matter; Stefan flow; computational fluid dynamics CFD ; orthogonal collocation; biomass waste combustion;

    Abstract : Various biomass-type conversions into sustainable heat and power, from dedicated crops to solid biomass waste via the combustion process, are at the center of scientific and industrial focus today. However, biomass combustion contribution to global particulate matter (PM) emission has become one of the biggest challenges that remain in the development of sustainable biomass combustion systems. READ MORE