Essays about: "Hexavalent chromium"

Showing result 1 - 5 of 10 essays containing the words Hexavalent chromium.

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

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Milda Grikainyte; [2022]
    Keywords : Water-gas shift; catalyst; chemical engineering; Chemistry;

    Abstract : 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. READ MORE

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

    University essay from Jönköping University/JTH, Industridesign

    Author : Irene Ramos; [2021]
    Keywords : 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;

    Abstract : 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. READ MORE

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

    University essay from Linköpings universitet/Molekylär ytfysik och nanovetenskap

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

    Abstract : 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. READ MORE

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

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

    Author : Linus Köpberg; [2016]
    Keywords : ;

    Abstract : 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. READ MORE

  6. 5. Assessment on Groundwater Contamination from a Former Hard Chromium Plating Site in Iggesund

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

    Author : Isabell Alnehem; [2016]
    Keywords : ;

    Abstract : Before the persistent and toxicological properties of perfluoroalkyl and polyfluoroalkyl substances (PFASs) were known they were used worldwide. The thermal and chemical stability from the carbon-fluorine bond makes these substances desirable for industrial applications. READ MORE