Sökning: "nitrogen recycling"

Visar resultat 1 - 5 av 44 uppsatser innehållade orden nitrogen recycling.

  1. 1. Ombyggnation och klimatpåverkan : En kvalitativ studie om utmaningar och möjligheter

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Alexander Burman; Joel Laigar; [2024]
    Nyckelord :Reuse; Circular construction; Carbon dioxide equivalents; Climate work; Climate calculating tools; Återbruk; Cirkulärt byggande; Koldioxidekvivalenter; Klimatarbete; Klimatberäkningsverktyg;

    Sammanfattning : Inom den svenska bygg- och fastighetsbranschen har frågan om klimatpåverkan och hållbarhet blivit alltmer central. Branschens påverkan på miljön, särskilt i form av koldioxidutsläpp, är väl dokumenterad och utgör en betydande del av Sveriges totala utsläpp av växthusgaser. LÄS MER

  3. 2. Can iba detect the next compressor failure? : Condition-based monitoring applied to nitrogen compressor – a case study

    Master-uppsats, Högskolan i Gävle/Elektronik

    Författare :Kalle Kurttio; [2023]
    Nyckelord :predictive maintenance; condition-based monitoring; screw compressor; reciprocating compressor; ibaAnalyzer; ibaHD-server;

    Sammanfattning : Production of steel powder is done by atomization of a molten steel stream. Atomization is done by feeding high pressure nitrogen gas through nozzles, creating jets of gas which scatter the molten steel stream into powder. The steel powder falls through the atomization tower whilst it cools and solidifies. LÄS MER

  4. 3. Modelling organic farming systems : is livestock needed for a functioning nitrogen cycle and food production?

    Master-uppsats, SLU/Dept. of Energy and Technology

    Författare :Franziska Johanna Galler; [2023]
    Nyckelord :organic farming; livestock; stockless farming; nitrogen cycle; nitrogen use efficiency; nitrogen recycling; nutritional value; human nutrition; food system;

    Sammanfattning : Livestock has always been an integral part of nutrient management on organic farms. Environmental, economic and idieological trends are leading to an increasing specialization of agriculture away from mixed farms with livestock. LÄS MER

  5. 4. Biochar from separated digestate and pig manure as soil amendment

    Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Soil and Environment

    Författare :Lovisa Nissen; [2022]
    Nyckelord :separation; screw press; incubation study; CO2 emission; N mineralization;

    Sammanfattning : The situation in and around the Baltic Sea, with large areas with hypoxia in the sea and areas in the watershed with a high concentration of animal farms, has led to a need to increase the nutrient recycling of animal manure. High levels of phosphorus (P) in the soil lead to leaching, and by reducing the P-level in organic fertilizers, this leaching can be reduced. LÄS MER

  7. 5. Potential for Enhanced Biological Phosphorus Removal in an activated sludge system for greywater

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Mehrzad Ghassemi; [2022]
    Nyckelord :Greywater; EBPR; Phosphorus; Biological treatment; Water and environmental engineering; Technology and Engineering;

    Sammanfattning : As the world's population grows, concerns about water scarcity and rising pollution such as phosphorus and nitrogen have increased significantly. Greywater has been considered by researchers as an ideal alternative to fresh water for decades, and several projects have been implemented to treat and recycle it for various reuse purposes. LÄS MER