Sökning: "ammonia inhibition"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden ammonia inhibition.

  1. 1. Counteracting Ammonia Inhibition in Anaerobic Digestion using Wood Residues : Evaluating Ammonium Adsorption Capacity of Fibres from Pulp and Paper Mills

    Master-uppsats, Linköpings universitet/Tema Miljöförändring; Linköpings universitet/Biogas Research Center

    Författare :Marcus Wrangbert; [2021]
    Nyckelord :Anaerobic digestion; Ammonia inhibition; Fibres; Biogas;

    Sammanfattning : One of the main interests in commercial methane production is to maximize the gas yield, and it is thus appealing to use material with relative high methane potential. However, such material often results in process instability whereas ammonia inhibition is common. LÄS MER

  3. 2. 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

  4. 3. Assay of nitrification potentials in sewage sludge : development and evaluation of method, and nitrification potentials in sewage sludge before and after application to soil

    Master-uppsats, SLU/Dept. of Microbiology

    Författare :Caroline Jöngren; [2016]
    Nyckelord :Sewage sludge; nitrification potentials; PAO; sanitations treatment; ammonium; storage treatments; nitrous oxide; Nitobacteriacea; Nitrosomona;

    Sammanfattning : Sewage sludge (SS) contains valuable plant nutrients applicable to soil as fertilizer. Application to arable land is though controversial as SS can contain contains such as human pathogens, heavy metals and xenobiotics. LÄS MER

  5. 4. The effects of trace elements on the microbial communities of thermophilic biogas production

    Master-uppsats, SLU/Dept. of Microbiology

    Författare :Robin Hagblom; [2016]
    Nyckelord :biogas; thermophilic; trace elements; ammonia; SAO; fhs;

    Sammanfattning : The increasing need for alternatives to fossil fuels and traditional waste management systems can be simultaneously addressed by the production of biogas using organic waste as input material. The biogas produced can be used directly for energy production or upgraded to increase methane purity for use in the engines of motor vehicles. LÄS MER

  7. 5. Metoder för aktivitetstest av anammox och ammoniakoxiderande bakterier på bärarmaterial

    Uppsats för yrkesexamina på avancerad nivå, Institutionen för geovetenskaper

    Författare :Ida Gustafsson; [2013]
    Nyckelord :Anammox; AOB; Activity test; Temperature dependence; Nitrogen removal; Anammox; AOB; Aktivitetstest; Temperaturberoende; Kväverening;

    Sammanfattning : I och med övergödningsproblematiken i Östersjön och Sveriges åtaganden i samband med Baltic Sea Action Plan kommer det i framtiden ställas högre krav på rening av kväve från de större avloppsreningsverken i Sverige. Anammox är processen där ammonium oxideras till kvävgas med nitrit som elektonacceptor. LÄS MER