Sökning: "agricultural dependence"

Visar resultat 1 - 5 av 37 avhandlingar innehållade orden agricultural dependence.

  1. 1. Biogas production from lignocellulosic agricultural residues : microbial approaches for enhanced efficiency

    Författare :Tong Liu; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; LANTBRUKSVETENSKAPER; NATURAL SCIENCES; AGRICULTURAL SCIENCES;

    Sammanfattning : Methane, produced through microbial anaerobic digestion of various organic materials, is seen as a promising sustainable bioenergy source with the potential to reduce the current dependence on fossil fuels. Among organic materials, lignocellulosic materials, especially agriculture residues, are highly interesting due to high abundance and potential for methane production. LÄS MER

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

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

    Sammanfattning : 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. LÄS MER

  3. 3. Closing nutrient cycles

    Författare :Usman Akram; Uno Wennergren; Karin Tonderski; Genevieve Metson; Bob Rees; Linköpings universitet; []
    Nyckelord :AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Adequate and balanced crop nutrition – with nitrogen (N), phosphorus (P), and potassium (K) – is vital for sustainable crop production. Inadequate and imbalanced crop nutrition contributes to the crop yield gaps – a difference in actual and potential crop yield. LÄS MER

  4. 4. Environmental Technology and its Role in the Search for Urban Environmental Sustainability : The Dynamics of Adaptation

    Författare :Santiago Mejía-Dugand; Olof Hejlm; Leenard Baas; Julio Dávila; Linköpings universitet; []
    Nyckelord :AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Technology Adaptation; Governance Mechanisms; Spread of Technology; Stakeholder Involvement; Proof-of-concept; Environmental Technology Suppliers; Urban Imaginaries;

    Sammanfattning : The aim of this thesis is to analyze the role that environmental technology plays in the solution of environmental problems in cities, and discuss models and conditions that can facilitate the processes of selection, implementation and use of environmental technologies in and by cities.The technological component is perhaps one of the most important characteristics of modern cities. LÄS MER

  5. 5. Biorefinery systems for energy and feed production : greenhouse gas performance and energy balances

    Författare :Hanna Karlsson Potter; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; LANTBRUKSVETENSKAPER; ENGINEERING AND TECHNOLOGY; AGRICULTURAL SCIENCES;

    Sammanfattning : The current dependence on fossil fuels is problematic because these are a finite resource and because their combustion causes environmental degradation. Biorefineries produce a variety of valuable products from biomass that can replace products from petroleum refineries. LÄS MER