Sökning: "sludge"

Visar resultat 1 - 5 av 422 uppsatser innehållade ordet sludge.

  1. 1. Volatile fatty acid production from co-fermentation of primary sludge and food waste without pH control

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Binyam Bedaso; [2019]
    Nyckelord :Volatile fatty acid; Co-fermentation; Primary sludge; Food waste;

    Sammanfattning : The production of volatile fatty acids (VFAs) from waste stream is gaining high attention because of their high market value and wide range of applications. In this study, the production of VFA from co-fermentation of primary sludge from wastewater treatment plant and food waste without pH control was evaluated using a pilot-scale reactor in a semi-continuous mode of operation. LÄS MER

  2. 2. Utveckling av marknader för avfallsbaserade resurser : En fallstudie på återanvändning av komplexa avfallsströmmar ur ett värdekedjeperspektiv

    Master-uppsats, Linköpings universitet/Industriell miljöteknik; Linköpings universitet/Industriell miljöteknik

    Författare :Elsa Bertils; Herman Elvingson; [2019]
    Nyckelord :waste; markets; market regulation; reuse; recycling; resource efficiency; value chain; sludge; bottom ash; slag; organic fertilizer; waste policy; policy; avfall; marknader; återvinning; återanvändning; resurseffektivitet; värdekedja; rötslam; biogödsel; slaggrus; bottenaska; Revaq; SPCR 120; handel; avfallslagstiftning; styrmedel; styrning;

    Sammanfattning : Immense amounts of waste are generated daily by our society, and the management of these streams is a critical societal function. Part of this work is reusing and recycling materials with attractive properties, which is also an imperative step towards circular material flows. LÄS MER

  3. 3. Nanoplastic transport in soils by advection and bioturbation

    Master-uppsats, SLU/Dept. of Soil and Environment

    Författare :Wiebke Mareile Heinze; [2019]
    Nyckelord :column leaching; attachment efficiency; exposure; mixing rates; modelling;

    Sammanfattning : Micro- and nanoplastics are increasingly perceived as an emerging threat to ecosystems. They are emitted to soils through different pathways, including sewage sludge or compost applications in agriculture, or through tire abrasion and degradation of mismanaged waste. LÄS MER

  4. 4. Production of volatile fatty acids from anaerobic digestion using food waste, sludge and cow manure

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

    Författare :Zahraa Alshwan; Simon Hultman; [2019]
    Nyckelord :VFAs; anaerobic digestion; food waste; sludge; cow manure;

    Sammanfattning : Volatile fatty acids (VFAs) are important building blocks for the chemical industry. These acids can be produced through environmentally friendly processes from a variety of wastes, such as food waste, sludge and cow manure, through anaerobic digestion (AD). The main objective of this thesis was to investigate which operating parameters (e.g. LÄS MER

  5. 5. Olika filtermaterial vid jordbruksdränering

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

    Författare :Hanna Falk; [2019]
    Nyckelord :dräneringsfilter; mineralfilter; organiska filter; syntetiska filter;

    Sammanfattning : Drainage of arable land creates a better soil structure and a better aeration of the soil profile. Some fields are naturally drained, while others are dependent on drainage to create good cultivation conditions. Subsurface drainage is the most common method used to artificially drain arable land. LÄS MER