Sökning: "removal technique"

Visar resultat 21 - 25 av 85 uppsatser innehållade orden removal technique.

  1. 21. Översilningsytors potential att rena lakvatten från PFAS

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Emma Larsson; [2020]
    Nyckelord :PFAS; leachate; overland flow area; waste facility; waste; landfill; PFAS; lakvatten; översilningsytor; avfallsanläggning; avfall; deponi;

    Sammanfattning : Poly- and perfluorinated alkyl substances (PFASs) is a group of more than 5000 different substances, of which all consist of a fluorinated carbon chain resulting in a strong bond. Most of these substances are shown to be persistent, bioaccumulative and toxic for both humans and the environment. LÄS MER

  3. 22. Treatment of per- and polyfluoroalkylsubstance (PFAS)-contaminated waterusing aeration foam collection

    Uppsats för yrkesexamina på avancerad nivå,

    Författare :Ylva Kjellgren; [2020]
    Nyckelord :PFAS; aeration foam collection; landfill leachate treatment; WWTP;

    Sammanfattning : Landfills are potential sources for PFASs and treatment techniques for landfill leachate are urgently needed. Foam fractionation is an aeration technique which utilizes the tendency of PFASs to escape the liquid phase and build foam. The foam is harvested and with it the contamination. LÄS MER

  4. 23. Möjligheten att minska metallhalten i lakvatten med sulfatreducerande bakterier

    Master-uppsats, Lunds universitet/Teknisk mikrobiologi; Lunds universitet/Bioteknik

    Författare :Sofie Sunesson; [2020]
    Nyckelord :Metals; Landfill; Leachate; SRB; Precipitation; Sulfide; Applied microbiology; Teknisk mikrobiologi; Earth and Environmental Sciences; Technology and Engineering;

    Sammanfattning : Anaerobic treatment of landfill leachate using sulphide precipitation was tested at pilot scale for the purpose of heavy metal removal. The emission of leachate is heavily regulated by Swedish authority and the overall concentrations of heavy metals is expected to rise as landfills contain less organic matter. LÄS MER

  5. 24. On the use of compensated machining paths to alleviate three-lobed deformations

    M1-uppsats, Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Författare :Andreea Ilie; [2020]
    Nyckelord :3-jaw fixtures; asymmetric deformation; compensated path; milling; tolerances;

    Sammanfattning : During turning, the neck of a workpiece is ​three-lobed deformed due to the clamping pressure on the gripping jaws. While the workpiece is deformed, the machining tool will cut along a preprogrammed circular path. After removal from the chuck, the material returns to its original shape thus deforming the circular path. LÄS MER

  7. 25. Prioritising biochar application to arable land in Sweden : A spatial multi-criteria analysis

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

    Författare :Fabian Osslund; [2020]
    Nyckelord :Biochar; Spatial multi-criteria analysis; GIS; Agriculture; Soil enhancement; Biochar volume potential;

    Sammanfattning : Biochar, the solid product of thermal conversion of biomass with little or no available air, is acknowledged as a carbon dioxide removal technique and soil enhancer among other applications. Its potential soil enhancing properties consists of increased water and nutrient holding capacities, liming effects and sorption of pollutants. LÄS MER