Sökning: "Hexavalent chromium"

Visar resultat 1 - 5 av 12 uppsatser innehållade orden Hexavalent chromium.

  1. 1. Improvement of Pt-based catalyst supported on CeZrO2 used for the high-temperature water-gas shift reaction

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Milda Grikainyte; [2022]
    Nyckelord :Water-gas shift; catalyst; chemical engineering; Chemistry;

    Sammanfattning : The iron-chromium (Fe/Cr) catalyst is used for high-temperature water-gas shift (HT WGS) reaction. A major concern using the Fe/Cr catalyst is that it contains hexavalent chromium (Cr+6) which is a potent carcinogen causing health and environmental issues. LÄS MER

  3. 2. Quality perception study in sustainable materials for Volvo Cars

    Master-uppsats, Jönköping University/JTH, Industridesign

    Författare :Irene Ramos; [2021]
    Nyckelord :Affective engineering; Kansei engineering; User experience; User study; Quality perception; Customer appreciations; Sensory evaluation; Neuroaesthetic; Car interior design; Sustainable materials; Chrome surface; Chrome appearance; Chrome Plating; Hexavalent chromium; Soft metrology; Material experience; Material meanings; Visual appearance;

    Sammanfattning : The growing demand in the industry towards sustainability and the globalization of manufacturing lead to an industrial climate of constant development and improvements, and automotive interior design is not excluded. In 2017 the European Union declared that the material used to generate the bright chrome surfaces of car interiors (CR VI) is toxic and carcinogenic. LÄS MER

  4. 3. Avfall av läder, skinn och päls - en icke-fråga : En studie av det nationella stödets strävan att uppnå giftfria kretslopp inom kommunal avfallshantering

    L2-uppsats, Uppsala universitet/Konstvetenskapliga institutionen

    Författare :Kajsa Ramberg; [2020]
    Nyckelord :läder; skinn; päls; kommunalt avfall; avfallshantering; avfallsplanering; sexvärt krom; avfallsförbränning; miljögifter; cirkulär ekonomi;

    Sammanfattning : The title of this study is Leather, skin, fur – a non-issue. A study of the endeavor in national support to municipal waste management to obtain toxic-free material cycles. LÄS MER

  5. 4. Tuned sustainable anodic coatings for reduced ice adhesion

    Master-uppsats, Linköpings universitet/Molekylär ytfysik och nanovetenskap

    Författare :Thirza Poot; [2019]
    Nyckelord :aluminum alloys; tartaric-sulfuric acid anodizing; ice adhesion; silanization; hydrothermal sealing; contact angle; SEM; corrosion;

    Sammanfattning : Aluminum alloys are widely used materials in the aircraft industry due to their high specific strength and durability. The natural corrosion resistance of aluminum can be improved through an electrochemical anodizing process. LÄS MER

  7. 5. Adsorption of Cr(VI) on Mill Scale

    Kandidat-uppsats, Örebro universitet/Institutionen för naturvetenskap och teknik

    Författare :Linus Köpberg; [2016]
    Nyckelord :;

    Sammanfattning : Mill scale is a by-product from hot rolling of steel. It has a high content of iron oxide which has the ability to adsorb ions. Hexavalent chromium is a pollutant which could be adsorbed to mill scale. Different pre-treatment of the mill scale was tested to optimize the adsorption of hexavalent chromium. LÄS MER