Sökning: "Leaching fraction"

Visar resultat 1 - 5 av 17 uppsatser innehållade orden Leaching fraction.

  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. Evolution and Differentiation of Large Icy Moons

    Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Piia Tomberg; [2021]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Purpose: In preparation of several future missions with the objective to research the large icy moons of the Solar System, it is necessary to have a cohesive understanding of the conditions that might lead to the formation of liquid oceans in these moons. The purpose of this work is to create a numerical model for simulating the temperature evolution of the cores of large icy moons. LÄS MER

  4. 3. Evaluation of a gross pollutant trap-biofilter stormwater treatment train : The Role Of Calcium Carbonate, Vegetation And Pre-Treatment Facility

    Master-uppsats, Luleå tekniska universitet/Arkitektur och vatten

    Författare :Sofia Fahlbeck Carlsson; [2021]
    Nyckelord :Bioretention; stormwater; stormwater treatment; stormwater pollutants; heavy metals; phosphorus; Biofilter; dagvatten; dagvattenrening; dagvattenföroreningar; tungmetaller; fosfor;

    Sammanfattning : Development of cities, new buildings and other impervious surfaces entails increased stormwater flows, volumes and pollutant loads. Heavy metals, nutrients, sediments and salt are common pollutants in stormwater. LÄS MER

  5. 4. Cobalt and nickel concentrations in the Uppsala clay deposits : solubility and risk assessment

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

    Författare :Ali Reza Sadeghi; [2020]
    Nyckelord :heavy metals; soil contanimation; geochemically active fraction; leaching test; guideline value; site-specific guideline value;

    Sammanfattning : Heavy metals create a contamination problem in soils. Examples of heavy metals are Ni, Co, and Cu. Soil environment and minerals existing in the soil such as Fe and Mn oxides affect the presence of these heavy metals. In this thesis, the cobalt and nickel concentrations of selected soil samples from different locations in Uppsala were determined. LÄS MER

  7. 5. Fractionation of NOM in water from the treatment process at Ringsjöverket

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Stina Karlsson; [2018]
    Nyckelord :water engineering; environmental engineering; avloppsteknik; Technology and Engineering;

    Sammanfattning : During the last decades, increased concentrations of natural organic matter (NOM) and colour of surface waters have been reported from northern Europe and North America. Since surface waters are widely used for drinking water production this development has been problematic for drinking water producers. LÄS MER