Sökning: "Toxic metals"

Visar resultat 21 - 25 av 81 uppsatser innehållade orden Toxic metals.

  1. 21. POLYAROMATIC HYDROCARBONS IN HYDROCHARS : HYDROTHERMAL CARBONIZATION OF SEWAGE SLUDGE

    Master-uppsats, Umeå universitet/Kemiska institutionen

    Författare :Björn Sundqvist; [2021]
    Nyckelord :;

    Sammanfattning : Sewage sludge is an inevitable by-product from waste water treatment plants. Sludgemanagement is a difficult task since sludge has a high moisture content, poordewaterability and generally contain heavy metals, pharmaceutical residues,polyfluorinated alkyl substances (PFAS) and organic pollutants. LÄS MER

  3. 22. Återanvändning av sulfidförande berg : Aktuellt kunskapsläge, statistisk analys och biotillgänglighetsmodellering

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

    Författare :Ylva Bellander; [2021]
    Nyckelord :sulfide-bearing rock; acid rock drainage; heavy metals; correlation analysis; bioavailability; bio-met; sulfidförande berg; surt lakvatten; tungmetaller; korrelationsanalys; biotillgänglighet; bio-met;

    Sammanfattning : Sulfidförande berg förekommer på många platser i Sveriges berggrund. När sulfidförande berg losshålls frigörs nya ytor som utsätts för kontakt med syre och vatten, vilket oxiderar sulfidmineralen och berget vittrar. Vittringsprodukten kallas surt lakvatten. LÄS MER

  4. 23. A SCENARIO ANALYSIS OF PLATINUM GROUP METALS WITHIN THE TRUCKING INDUSTRY

    Master-uppsats, Göteborgs universitet/Graduate School

    Författare :Sara Arnhjort; Karin Rundqvist; [2020-07-22]
    Nyckelord :Trucking industry; Platinum group metals; PGM; Scenario planning; PGM within trucking industry;

    Sammanfattning : Platinum Group Metals (PGM) are important components within the automotive industry, used for cleaning vehicles toxic gas emissions. An increasing demand of these metals have been observed, and simultaneously, mining organisations have been experiencing declining ore grades in the mines, causing the demand to exceed the supply. LÄS MER

  5. 24. Temporal and spatial trends of heavy metal leakage from acid sulfate soils : Leakage of Ni, Zn, Cu and Fe to freshwater and marine sediments, North-eastern Sweden

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Bella Blomkvist; [2020]
    Nyckelord :acid sulfate soils; leaching; Persöfjärden; sulfide oxidation; metal pollution;

    Sammanfattning : Acid Sulfate soils (AS) are recognized for being a source of acidity in freshwaters in America, Europe, Australia, and Asia. Apart from the problematic acid leachate, AS soil serves as a possible source of toxic heavy metals in freshwaters, a problem which has received far less attention than problems related to acid leachate. LÄS MER

  7. 25. Site Study of Fibrous Sediments in Sandviken, Ångermanälven River Estuary, Sweden

    Master-uppsats, Uppsala universitet/Naturresurser och hållbar utveckling

    Författare :Joanna Ghaderidosst; [2020]
    Nyckelord :Fiberbank; fiber-rich; fibrous sediment; pulp and paper industry; bearing capacity; FluMu; Penetrometer; Pollution; consolidation; gas; Fiberbank; fiberrik; fiberhaltigt sediment; pappersindustri; bärkraft; FluMu; penetrometer; förorening; gas;

    Sammanfattning : Pulp and paper industries in Sweden have since the end of the 19th century until late 70s been active in dumping wastewater into adjacent water bodies that have created fibrous sediments called fiberbank and fiber-rich sediment. Fiberbanks are large banks of predominantly organic material while fiber-rich sediment is fibrous sediment that has been mixed with bottom sediment. LÄS MER