Search for dissertations about: "biogas"

Showing result 1 - 5 of 140 swedish dissertations containing the word biogas.

  1. 1. Systems Analysis for Eco-Industrial Development : Applied on Cement and Biogas Production Systems

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Roozbeh Feiz; Linköpings universitet.; Linköpings universitet.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; industrial ecology; eco-industrial development; multi-criteria analysis; life-cycle assessment; MCA; LCA; uncertainty management; systems analysis; industrial symbiosis; cement; biogas; cement production; biogas solutions;

    Abstract : Our industrial systems are not sustainable—a major challenge which demands several types of responses. Eco-industrial development can be seen as such a response, with the goal to establish industrial systems that are both ecological and economical. Industrial Ecology is another closely related response. READ MORE

  2. 2. Fuel Cells and Biogas

    University dissertation from Stockholm : KTH

    Author : Lars Hedström; KTH.; [2010]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; air bleed; biogas; carbon dioxide; carbon monoxide; current distribution; dilution; efficiency; energy conversion; energy systems; experimental; fuel cell; fuel cell systems; PEFC; poisoning; reformate; SOFC; TECHNOLOGY Chemical engineering Chemical process and manufacturing engineering Chemical energy engineering; TEKNIKVETENSKAP Kemiteknik Kemisk process- och produktionsteknik Kemisk energiteknik;

    Abstract : This thesis concerns biogas-operated fuel cells. Fuel cell technology may contribute to more efficient energy use, reduce emissions and also perhaps revolutionize current energy systems. The technology is, however, still immature and has not yet been implemented as dominant in any application or niche market. READ MORE

  3. 3. Biogas Production from Lignocelluloses Pretreatment, Substrate Characterization, Co-digestion and Economic Evaluation

    University dissertation from Chalmers Tekniska Högskola

    Author : Anna Teghammar; Högskolan i Borås.; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biogas; lignocellulose; pretreatment; anaerobic digestion; co-digestion; substrate characterization; economic evaluation; Biotechnology; economic evaluation.;

    Abstract : Biogas production from organic materials can be used as a renewable vehicle fuel, provide heat and generate electricity and can thereby reduce the greenhouse gas emissions. This thesis focuses on the biogas production based on lignocelluloses. There is an abundant availability of lignocelluloses, constituting 50% of the total biomass worldwide. READ MORE

  4. 4. Energy systems studied of biogas Generation aspects of renewable vehicle fuels in the transport system

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Mimmi Magnusson; KTH.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Anaerobic digestion; biogas; biomass; energy system; first-generation biofuels; renewable vehicle fuels; second-generation biofuels; supply- and demand-side measures; third-generation biofuels; transport system;

    Abstract : The transport sector is seen as particularly problematic when concerns about climate change and dependency on fossil energy are discussed. Because of this, bioenergy is strongly promoted for use in the transport sector, both on a European level and nationally in Sweden. READ MORE

  5. 5. Biogas in Swedish transport – a policy-driven systemic transition

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Tomas Lönnqvist; KTH.; [2017]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Transport biofuels; Biogas; Forest-derived methane; Policy; Actors; Multilevel perspective; Barriers and incentives; Biogas production potential; Chemical Engineering; Kemiteknik; Industriell ekonomi och organisation; Industrial Engineering and Management;

    Abstract : The thesis analyzes the conditions for biogas in the Swedish transport sector. Biogas can contribute to the achievement of Sweden’s ambitious targets of decreased emissions of greenhouse gases and an increased share of renewables in the transport sector, a sector that encompasses the major challenges in the phase-out of fossil fuels. READ MORE