Sökning: "biochar nitrogen"

Visar resultat 1 - 5 av 22 uppsatser innehållade orden biochar nitrogen.

  1. 1. Pyrolysis of Municipal Sewage Sludge to get a phosphorus rich char residue for soil improvement

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

    Författare :Shahin Shamim; [2023]
    Nyckelord :Sewage Sludge-Phosphorus-Pyrolysis- Heavy metals; Cadmium; Lead; Nickle; Copper; Chromium; Zinc; Biochar; Heating value; Fertilizer- Thermal conversion;

    Sammanfattning : Sewage sludge is a byproduct of wastewater treatment plants. It is a kind of waste. however, it contains several valuable nutrients like phosphorous and nitrogen that are used to rich the soil as a fertilizer compound. LÄS MER

  3. 2. Odlingsförsök med Pinus sylvestris i gransågspån blandat med hydrokol respektive pyrokol

    Kandidat-uppsats, SLU/School for Forest Management

    Författare :Annica Berglund; Ninja Bernzen; [2023]
    Nyckelord :alternativt odlingssubstrat; näringsläckage; biokol;

    Sammanfattning : Torv är det vanligaste odlingssubstratet som används idag till de mer än 400 miljoner skogsplantor som årligen levereras till det svenska skogsbruket. Det låga näringsinnehållet och goda vattenhållande förmågan gör att torven går att anpassa efter behov med gödsling och kalkning. LÄS MER

  4. 3. Ammonium and nitrate sorption by biochar

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

    Författare :Yasser Alrhban; [2023]
    Nyckelord :biochar nitrogen; retention; dialysis; absorption; adsorption; ammonium; nitrate;

    Sammanfattning : Biochar has recently drawn attention due to its ability to increase soil fertility, sequester carbon and its expected effect on reducing the leaching of elements from the soil, especially nitrogen. The possibility of using biochar as a soil amendment to reduce the amount of nitrogen leaching, and then reducing the quantities of nitrogen fertilizers used in agriculture to avoid the bad environmental effects has become a matter of great interest. 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. 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