Sökning: "crop residues"

Visar resultat 16 - 20 av 21 avhandlingar innehållade orden crop residues.

  1. 16. The Story of Phosphorus : Sustainability implications of global phosphorus scarcity for food security

    Författare :Dana Cordell; Stuart White; Jan-Olof Drangert; Julie Wilk; Johan Rockström; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; global phosphorus scarcity; peak phosphorus; global food security; sustainable resource use; food production and consumption system; transdisciplinary; systems thinking; global fosforbrist; peak fosfor; global matsäkerhet; hållbar resursanvändning; system för produktion och konsumtion av mat; transdisciplinaritet; systemtänkande; Water in nature and society; Vatten i natur och samhälle;

    Sammanfattning : The story of phosphorus began with the search for the philosopher’s stone, and centuries later the critical role of phosphorus in soil fertility and crop growth was highlighted. Eventually, phosphorus was implicated in the global environmental challenge of eutrophication. LÄS MER

  3. 17. Biogas in Sweden - Opportunities and challenges from a systems perspective

    Författare :Mikael Lantz; Miljö- och energisystem; []
    Nyckelord :Biogas; Policy Instruments; Techno-economic assessments; Environmental assessments;

    Sammanfattning : Addressing today’s challenges of reducing our dependence on fossil fuels and related emissions of greenhouse gases requires measures such as increased energy efficiency and replacement of fossil energy carriers with renewable ones. Biogas is one of the fastest growing renewable energy sources in the world and the overarching purpose of the research presented in this doctoral thesis is to explore the prospects of an increased production and utilization of biogas in a Swedish context. LÄS MER

  4. 18. Lignocellulosic Ethanol Production Potential and Regional Transportation Fuel Demand

    Författare :Lilia Daianova; Jinyue Yan; Louise Trygg; Mälardalens högskola; []
    Nyckelord :Agricultural by-products; Straw; Bioethanol; Transport system; Greenhouse gases GHG ; Polygeneration system; Combined Heat and Power CHP ; Mixed Integer Programming MIP .; Energy- and Environmental Engineering; energi- och miljöteknik;

    Sammanfattning : Road traffic dominates in domestic Swedish transportation and is highly dependent on fossil fuels, petrol and diesel. Currently, the use of renewable fuels in transportation accounts for less than 6% of the total energy use in transport. LÄS MER

  5. 19. An evaluation of biodiesel policies : The case of palm oil agro-industry in Indonesia

    Författare :Fumi Harahap; Semida Silveira; Serina Ahlgren; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; palm oil; biodiesel; Indonesia; policy evaluation; policy coherence analysis; land allocation; sectoral policy goals; life cycle cost analysis; biodiesel cost competitiveness; biorefinery; Energy Technology; Energiteknik;

    Sammanfattning : Oil palm has flourished as an economically vital crop in Indonesia given its use in both food and non-food products (including biodiesel) for domestic and export markets. However, the expansion of oil palm plantations in Indonesia is controversial. LÄS MER

  7. 20. Lignocellulosic Ethanol Production: Studies on Sugarcane Bagasse, Paja Brava, Wheat Straw, Quinoa Stalks and Curupaú

    Författare :Cristhian Carrasco; Avdelningen för kemiteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Steam pretreatment; ethanol production; SSCF; arabinosylated aromatics; SO2; H2SO4; sugarcane bagasse; paja brava; wheat straw; quinoa stalks; Anadenanthera colubrina;

    Sammanfattning : Lignocellulosic biomass refers to plant material that is composed mainly of cellulose, hemicellulose and lignin. These materials are today of large interest to researchers in the field of biofuel and bioenergy. LÄS MER