Sökning: "biogas from sewage sludge"

Visar resultat 1 - 5 av 39 uppsatser innehållade orden biogas from sewage sludge.

  1. 1. Biogas Potential in the North of Sweden : Inventory and Techno-Economic Assessment of Substrates for an Increased Biogas Production in Norrbotten

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Alma Fahlén Hammar; [2023]
    Nyckelord :Biogas; anaerobic digestion; AD; Norrland; bioenergy; fossil-free; chemical engineering; Chemistry; Technology and Engineering;

    Sammanfattning : Great investments are planned in the north of Sweden the coming years, not the least in the county of Norrbotten where the projects collectively are referred to as the green transition due to the focus on fossil-free techniques. But to be able to secure a sustainable energy supply and reach the goal set by the member states of the European Union of a carbon dioxide neutral union in 2050 the production of alternative energy sources needs to intensify. LÄS MER

  3. 2. Pilotstudie - rötning med slamrecirkulering på Käppalaverket

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Joel Andersson; [2022]
    Nyckelord :mesophilic digestion; retention time; recirculation; sludge; lab-scale; organic loading; volatile fatty acids; pH; wastewater treatment; mesofil rötning; uppehållstid; recirkulering; slam; labbskala; organisk belastning; flyktiga fettsyror; pH; avloppsrening;

    Sammanfattning : Kommunala avloppsreningsverk renar avloppsvatten och avlägsnar näringsämnen innan vattnet släpps ut i den omgivande miljön. Under reningen avskiljs partiklar som bildar råslam. Genom att bryta ner råslammet anaerobt (syrefritt) via rötning kan användbara produkter, såsom biogas till bussar, erhållas. LÄS MER

  4. 3. En förstudie om näring- och energiåtervinning från källsorterande avloppssystem

    Master-uppsats, Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaper (from 2013)

    Författare :Sebastian Gisle; [2021]
    Nyckelord :hållbarhet; återvinning; resurshantering;

    Sammanfattning : The world's demand for nitrogen and phosphorus is increasing at the same time as high concentrations of the nutrients flow out from water treatment plants. The presence of nitrogen and phosphorus in nature is a contributing factor to eutrophication and thus damages ecosystems. LÄS MER

  5. 4. Improved prediction of biogas production at Uddebo wastewater treatment plant : Substrate modelling in SIMCA

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

    Författare :Isak Gullman; [2021]
    Nyckelord :Anaerobic digestion; Biogas; Industrial waste; Modelling; Sewage sludge;

    Sammanfattning : Anaerobic digestion is a complex process, dependent on multiple factors, which can be made more stable and efficient with the help of process models. A more stable process could reduce biogas torching, which increases the amount of renewable energy available for heat- and electricity production and vehicle fuel. LÄS MER

  7. 5. Anaerobic Co-digestion of steam pretreated wheat straw and sewage sludge

    Master-uppsats, Lunds universitet/Bioteknik (master); Lunds universitet/Bioteknik (CI)

    Författare :Virginia Tosi; [2021]
    Nyckelord :Anaerobic co-digestion; wheat straw pretreatment; nutrients availability; OLR; VFA acumulation; Biotechnology; Technology and Engineering;

    Sammanfattning : Anaerobic digestion (AD) of wastes and residues is a widely applied and explored process. However, when the process is not optimized, inadequate concentrations of nutrients and inhibitory compounds are common and can lead to low maximum organic loading rates and increased risk of process problems, low organic dry solids degradation rate and reduced methane yields. LÄS MER