Sökning: "anaerobic digestion"

Visar resultat 1 - 5 av 216 uppsatser innehållade orden anaerobic digestion.

  1. 1. Stabilizing biogas processes at high ammonia : effects of acetate pulse-feeding on the microbial population

    Master-uppsats, SLU/Department of Molecular Sciences

    Författare :Oscar Dolk; [2020]
    Nyckelord :biogas; anaerobic digestion; ammonia inhibition; acetate enrichment;

    Sammanfattning : This study investigated the problem of ammonia inhibition in biogas reactors, commonly occurring when protein rich substrates are used in anaerobic digestion processes. Ammonia inhibition is one of the foremost causes of failure in anaerobic digestion, leading to process instability, with symptoms commonly expressed as; reduction in biogas produced, decreased methane content in the gas and accumulation of volatile fatty acids. LÄS MER

  2. 2. Novel workflow for metagenomics and transcriptomics analysis of A.D. systems

    Master-uppsats, SLU/Dept. of Animal Environment and Health

    Författare :Renaud Van Damme; [2020]
    Nyckelord :Metagenomics; transcriptomics; pipeline; A.D systems; Biogas; Bioinformatics;

    Sammanfattning : The A.D. systems (anaerobic digestion), when used in biogas reactors, are an advanced ecological way to produce energy while treating waste. The majority of the microbial community of the reactor remains unknown to this day, due to the impossibility to culture most of the bacteria individually. LÄS MER

  3. 3. Edible Fungal Production using Acetic Acid as Carbon and Energy Source

    M1-uppsats, Högskolan i Borås/Akademin för textil, teknik och ekonomi; Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Författare :Barbara Mae Alontaga; Anna Axebrink; [2020]
    Nyckelord :VFA; Volatile fatty acid; acetic acid; Fungi; Carbon source; Energy source;

    Sammanfattning : Volatile fatty acids (VFAs) have become attractive and gained high research interest due to its significance for the chemical industry and economical advantage. These acids can be produced by utilizing organic waste such as food waste as substrate through anaerobic digestion. LÄS MER

  4. 4. Feasibility Study for Production of Biogas from Wastewater and Sewage Sludge : Development of a Sustainability Assessment Framework and its Application

    Master-uppsats, KTH/Energiteknik

    Författare :Akash Som Gupta; [2020]
    Nyckelord :resource recovery; wastewater treatment; biogas; anaerobic digestion; energy recovery; sustainability assessment; SDG;

    Sammanfattning : Clean water and renewable energy are essential requirements to build resilience towards the adverse effects of climate change and global warming. Advanced wastewater treatment options may provide a unique opportunity to recover various useful resources such as energy (biogas), fertilizers, minerals, and metals embedded in the wastewater stream. LÄS MER

  5. 5. En teoretisk granskning av ekonomiska, energioch miljömässiga för- och nackdelar med mesofil rötning av avloppsslam : Fallstudie på Rättviks avloppsreningsverk

    M1-uppsats, Högskolan i Gävle/Avdelningen för byggnadsteknik, energisystem och miljövetenskap

    Författare :Maria Lundgren; [2020]
    Nyckelord :avloppsreningsverk; rötning; biogas;

    Sammanfattning : Inom VA-branschen ökar energi- och miljömedvetenheten. Detta har lett till en önskan om att ta vara på resursinnehållet i avloppsslammet, vilket kan tas tillvara genom rötning. Men precis som andra slambehandlingsmetoder har rötning flera olika föroch nackdelar. LÄS MER