Sökning: "oxidation av metaller"

Visar resultat 1 - 5 av 12 uppsatser innehållade orden oxidation av metaller.

  1. 1. Long-Term Impact of Drought on AcidSulfate Soil Leaching, a Study of NineCatchment Areas in Sweden and Finland

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

    Författare :Emilie Åström; [2022]
    Nyckelord :acid sulfate soil; hydrological drought; water chemistry; metal leaching; sulfate concentration; sur sulfatjord; hydrologisk torka; vattenkemi; metallurlakning; sulfatkoncentration;

    Sammanfattning : Sediments rich in sulfide were deposited in the Littorina sea in an environment that was shallow, anoxic,and reductive. The sediments were brought above sea level by isostatic uplift and can now be foundalong the coast of the Baltic sea. LÄS MER

  3. 2. Reduction of iron oxide by hydrogen studied using environmental transmission electron microscopy

    Master-uppsats, Lunds universitet/Centrum för analys och syntes

    Författare :David Wahlqvist; [2020]
    Nyckelord :Transmission Electron Microscopy; Electron Diffraction; Iron Oxide; Reduction; Iron; Environmental Transmission Electron Microscopy; ETEM; Materials chemistry; Materialkemi; Chemistry;

    Sammanfattning : This thesis aims to explore how the reduction of iron oxide by hydrogen should be explored in an environmental transmission electron microscope (ETEM). This is done by performing a series of reduction attempts in the ETEM at nCHREM, Lund University, and exploring how the ETEM conditions are different from those used commercially. LÄS MER

  4. 3. Ett cirkulärt samhälle med sulfidjord : Behandling och återanvändning

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Markus Höegh; [2020]
    Nyckelord :Sulfidjord; neutralisering; behandling; bränd kalk; bioaska;

    Sammanfattning : I Sverige förekommer det sura sulfatjordar som är resultatet av när sulfidrika sediment, som avsattes för 4000 – 7000 år sedan, introduceras i en oxisk miljö. Sedimenten avsattes i botten av Litorinahavet främst längs östkusten samt Mälardalen i anaeroba förhållanden där sulfider kunde bildas. LÄS MER

  5. 4. The possibilities of recycling wash water at Vidinge

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Julia Mauritzson; [2020]
    Nyckelord :reuse; treatment; fresh-cut; water engineering; environmental engineering; avloppsteknik; vattenförsörjningsteknik; Technology and Engineering;

    Sammanfattning : Water is a resource of importance and with drier weather around the world, including Swe-den, there is a risk of too low levels of water to satisfy for instance households, animals and industries in the future. Fresh-cut fruit and vegetable industries are water intense and almost all process water is used in the washing process. LÄS MER

  7. 5. Making wood durable. A sustainable approachwith linseed oil

    Uppsats för yrkesexamina på avancerad nivå, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Helena Olsson; [2019]
    Nyckelord :Linseed oil; Wood preservation; Nuclear Magnetic Resonance NMR ; Diffusion Ordered Spectroscopy DOSY ; Time-resolved oxidation study; Linolja; Bevarande träbehandling; Nuclear Magnetic Resonance NMR ; Diffusion Ordered Spectroscopy DOSY ; Oxidationstidsstudie;

    Sammanfattning : Linseed oil has been and is used for vast number of applications, such as in food and paint industry, and wood preservation. It is a good environmental choice, as it originates from renewable sources. Linseed oil is mainly a mixture of triglyceride of fatty acids, both saturated and mono- or polyunsaturated, which allows the oil to oxidize. LÄS MER