Sökning: "dry matter loss"

Visar resultat 1 - 5 av 24 uppsatser innehållade orden dry matter loss.

  1. 1. 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

  3. 2. Variation i torrsubstanshalt mellan balar från samma vallfoderparti och dess påverkan på utfodring

    Kandidat-uppsats, SLU/Dept. of Anatomy, Physiology and Biochemistry

    Författare :Karin Berlin; Carin Danielsson; [2022]
    Nyckelord :hösilage; häst; grovfoder;

    Sammanfattning : Horses are adapted to eat grass and require sufficient amounts of forage with good hygienic quality. Forage with good hygienic quality have low levels of detrimental bacteria, fungi and toxins. For this reason, conserved grass such as hay, silage or haylage is necessary during the winter period, due to the absence of fresh grass. LÄS MER

  4. 3. Modeling self-heating and dry matter loss in large-scale biomass storage

    Master-uppsats, KTH/Kemiteknik

    Författare :Johan Qviström; [2022]
    Nyckelord :Modell; biomass; storage; self-heating; dry matter loss; Modell; biomassa; förvaring; uppvärmning; torrsubstansförlust;

    Sammanfattning : Materialförluster och självuppvärmning är ett vanligt problem vid lagring av biomassa i stor skala. Biomassan som lagras bryts med tiden ned av mikroorganismer och kemiska processer vilket resulterar i en förlust av torrsubstans, ofta kring 1-4% per månad. LÄS MER

  5. 4. Impacts of peatland drainage on soil properties : a study of drainage effects on boreal peatlands in northern Sweden

    Master-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Frederika Klaus; [2022]
    Nyckelord :Boreal peatlands; Bulk density; Carbon; Greenhouse gas; Isotopes; Nitrogen; Organic matter; Peatlands; Peatland drainage; Peatland restoration;

    Sammanfattning : Peatlands cover approximately 3% of the terrestrial surface on Earth and perform several important ecosystem functions, such as carbon storage and water retention. During the late 19th and early 20th centuries, approximately 2 million hectares of peatlands in Sweden were drained to manage the land for forestry and agriculture. LÄS MER

  7. 5. Lagring av skogsflis med och utan täckning : substansförlusters påverkan av nederbörd och vind

    Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Energy and Technology

    Författare :Daniel Wetterholm; [2021]
    Nyckelord :biobränsle; bränslekvalitet; substansförluster; fukthalt; data analys; lagring;

    Sammanfattning : In the supply chain for wood chips, storage is a neccesary part due to seasonal demand. During storage there are several mechanisms occuring, cell respiration, biological degradation and thermo-chemical oxidative reaction. All of the mentioned mechanisms lead to increased temperature, loss of dry matter and energy. LÄS MER