Sökning: "mine drainage"

Visar resultat 1 - 5 av 32 uppsatser innehållade orden mine drainage.

  1. 1. Utilizing wood ash to stimulate algal growth in mine waters from northern Sweden

    Master-uppsats, Luleå tekniska universitet/Geovetenskap och miljöteknik

    Författare :Katelyn Murphy; [2023]
    Nyckelord :acid rock drainage; acid mine drainage; controlled eutrophication;

    Sammanfattning : Acid rock drainage (ARD), caused by the oxidation of sulphide bearing minerals, continues to be an environmental impact of both closed and operational mines, leading to waters with low pH values and high metal concentrations (Park et al., 2019). LÄS MER

  3. 2. In-Situ Gold Resource Estimation Using Satellite Remote Sensing and Machine Learning in Defunct Tailing Storage Facilities (South Africa)

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Shenelle Agard; [2023]
    Nyckelord :tailings storage facility; critical raw materials; machine learning; mine valorisation;

    Sammanfattning : The mining industry generates billions of tonnes of waste annually, which is often stored in tailings storage facilities (TSF). This waste is generated from the extraction of ore from surface or underground mines, as well as from metallurgical processing and low-grade stockpiles. LÄS MER

  4. 3. Some Like It Hot: Pre-heating Prior to Bioreactor Treatment Enhances Nitrogen Removal From Mine Drainage

    Master-uppsats, Uppsala universitet/Luft-, vatten- och landskapslära

    Författare :Laura Nina Bettoni; [2022]
    Nyckelord :denitrification; nitrate removal; temperature; woodchip bioreactor; waste rock leachate;

    Sammanfattning : Ammonium-nitrate based explosives (NH4NO3) used within the operations of Kiruna iron ore mine release nitrate (NO3-) into the environment, potentially having adverse effects on local river-systems. One way of reducing NO3- impacts to the environment is through a woodchip denitrifying bioreactor (DBR). LÄS MER

  5. 4. Vridningsmekanism för Stigortsborrmaskin

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Philip Stenhammar; [2020]
    Nyckelord :Raiseboring machine; tilt mechanism; mehanical rock excavation; Stigortsborrmaskin; vridningsmekanism; mekanisk bergsavverkning;

    Sammanfattning : Examensarbetet är utfört tillammans med Epiroc genom Svea Teknik AB och som skett inom mastersprogrammet Maskinkonstruktion på KTH.  Stigortsborrmaskiner används inom gruvindustrin till att exempelvis borra hisschakt, malmpassager eller dränering mellan två redan existerande orter. LÄS MER

  7. 5. Spatial and temporal changes in microbial community composition in a full-scale woodchip bioreactor for treating mine water

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Felicia Wallnäs; [2020]
    Nyckelord :;

    Sammanfattning : Incomplete detonation of nitrogen-based explosives can lead to abundant levels of nitrate in mine groundwater. The possibility of reducing nitrogen levels from the wastewater through denitrification, anammox and DNRA has been investigated using a full-scale bioreactor. The bioreactor is situated subsurface and is filled with pine woodchips. LÄS MER