Sökning: "CH4 formation"

Visar resultat 1 - 5 av 13 uppsatser innehållade orden CH4 formation.

  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. Assessment of how environmental variables and vegetation structure influence peatland carbon fluxes

    Master-uppsats, Uppsala universitet/Växtekologi och evolution; Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Bernabé Ramírez; [2021]
    Nyckelord :;

    Sammanfattning : Boreal peatlands are important ecosystems from a carbon balance perspective because they are natural carbon sinks as a result of millennia of peat formation. However, due to climate change, these ecosystems are susceptible to changes in hydrology and temperature. LÄS MER

  4. 3. Comparison between conventional and organic farming systems : an LCA study of milk production

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

    Författare :Yue Gu; [2021]
    Nyckelord :;

    Sammanfattning : Agriculture has always been an important part in people’s daily life and has been developing over centuries with the development of technology and contributing to the rise of civilizations. Based on the production method, conventional and organic farming systems are currently the two main farming systems. LÄS MER

  5. 4. Investigation and Optimization of Small-Scale Fecal Management : As a product from dry toilet solutions in off-grid Swedish holiday homes

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :ELLEN DANIELSSON; CHRISTOPHER LEKSTRÖM; [2021]
    Nyckelord :Latrine compost; Feces; Composting process; Product development; Prototyping; Product design; User-centered design; Human-centered design; Circular economy; System investigation; Sustainable development; Latrinkompost; Fekalier; Komposteringsprocess; Produktutveckling; Prototyp; Produktdesign; Användarcentrerad design; Cirkulär ekonomi; Systemundersökning; Hållbar utveckling;

    Sammanfattning : In off-grid holiday homes, alternative toilet solutions are needed. There is a wide range of dry toilet systems, where urine-diverting systems and incineration toilets are common solutions. Urine-diverting dry toilets require that users need to manage generated fecal fractions. LÄS MER

  7. 5. GHG reduction by rewetted arable land : a study on cultivated peatland for biogas production in temperate climate in Sweden

    Magister-uppsats,

    Författare :Mireille LMI Martens; [2017]
    Nyckelord :Phragmites australis; Typha latifolia; methane yield; paludiculture; peatland;

    Sammanfattning : Hydrophytes can be cultivated on rewetted drained peatland and used as substrate to produce biogas which can be utilized as vehicle fuel. This results in less GHG from rewetted peat soils and at the same time leads to renewable energy that substitutes fossil fuels. LÄS MER