Search for dissertations about: "bioenergy"

Showing result 1 - 5 of 180 swedish dissertations containing the word bioenergy.

  1. 1. Study of the activity of catalysts for the production of high quality biomass gasification gas with emphasis on Ni-substituted Ba-hexaaluminates

    University dissertation from Linnaeus University

    Author : Charlotte Parsland; Jan Brandin; Anders Holmen; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bioenergy; catalysis; tars; steam reforming; gasification; hexaaluminate; bioenergi; katalys; tjäror; ångreformering; förgasning; hexaaluminat; Bioenergiteknik Energi- och Miljöteknik; Bioenergy Technology; Kemi; Chemistry;

    Abstract : The fossil hydrocarbons are not inexhaustible, and their use is not without impact in our need of energy, fuels and hydrocarbons as building blocks for organic materials. The quest for renewable, environmentally more friendly technologies are in need and woody biomass is a promising candidate, well provided in the boreal parts of the world. READ MORE

  2. 2. Anaerobic digestion in the kraft pulp and paper industry Challenges and possibilities for implementation

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Eva-Maria Ekstrand; Bo H Svensson; Annika Björn (Fredriksson); David Bastviken; Jukka Rintala; [2019]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Pulp and paper; anaerobic digestion; fibre sludge; activated sludge; condensates; bleaching wastewater; wastewater treatment; methane; degradability; nutrient recirculation; Pappers- och massa; anaerob nedbrytning; fiberslam; aktivt slam; kondensat; vattenrening; metan; nedbrytbarhet; näringsåterföring;

    Abstract : The pulp and paper industry is a large producer of wastewater and sludge, putting high pressure on waste treatment. In addition, more rigorous environmental legislation for pollution control and demands to increase the use of renewable energy have put further pressure on the pulp and paper industry’s waste treatment, where anaerobic digestion (AD) and the production of methane could pose a solution. READ MORE

  3. 3. Industrial Symbiosis in the Biofuel Industry Quantification of the Environmental Performance and Identification of Synergies

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Michael Martin; Mats Eklund; Laura Sokka; [2013]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Industrial symbiosis; life cycle assessment; by-product; integration; environmental performance;

    Abstract : The production of biofuels has increased in recent years, to reduce the dependence on fossil fuels and mitigate climate change. However, current production practices are heavily criticized on their environmental sustainability. READ MORE

  4. 4. Char conversion kinetics and aerosol characterization in biomass gasification

    University dissertation from Växjö : Linnaeus University Press

    Author : Leteng Lin; Michael Strand; Alberto Gómez-Barea; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biomass gasification; fluidized bed; char; kinetics; aerosol; APS; TEOM; Bioenergiteknik Energi- och Miljöteknik; Bioenergy Technology;

    Abstract : Biomass gasification is a thermochemical conversion by partial oxidation at elevated temperature of solid biomass into a gaseous energy carrier. The product gas contains the major components CO, H2, CO2, CH4, as well as some tar and inorganic impurities and solid particles such as ash, bed material, soot and char. READ MORE

  5. 5. On Food Price Implications from Expanded Bioenergy Production

    University dissertation from Växjö : Linnaeus University Press

    Author : David Bryngelsson; [2012]
    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