Sökning: "furans"

Visar resultat 1 - 5 av 6 uppsatser innehållade ordet furans.

  1. 1. Atmospheric reactivity of cyclic ethers of relevance to biofuel combustion

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Emelie Graham; [2015]
    Nyckelord :Ecosystem Science; Physical Geography; 2nd generation biofuels; furans; tropospheric chemistry; ozonolysis; atmospheric kinetics; computational chemistry; IR Spectroscopy; Atmospheric Science Biochemical Cycles; Earth and Environmental Sciences;

    Sammanfattning : Biofuels are considered to be an environmental friendly alternative to fossil fuels as they have the potential to reduce the global emissions of greenhouse gases. Studies have showed that an increased use of ethanol could alter the atmospheric chemical composition and enhance urban ozone concentrations resulting in higher human mortality rates. LÄS MER

  3. 2. Atmospheric decomposition of cyclic ethers

    Kandidat-uppsats, Lunds universitet/Fysiska institutionen

    Författare :Ida Mexnell; [2013]
    Nyckelord :Atmospheric chemistry; environmental issues; bio fuels; furans; Physics and Astronomy;

    Sammanfattning : Renewable alternatives to fossil fuels are of importance nowadays since the use of fossil fuels is considered to stand for the largest contribution to global warming. In recent years, a group of cyclic ethers called furans have been proposed as potential renewable fuels. LÄS MER

  4. 3. Furan - A Future Fuel and its Lifetime in Urban Air

    Kandidat-uppsats, Lunds universitet/Fysiska institutionen

    Författare :Emelie Graham; [2013]
    Nyckelord :Atmospheric science Tropospheric chemistry Kinetics Rate constant Absolute rate method Biofuels Furan Ozone; Physics and Astronomy; Chemistry; Earth and Environmental Sciences;

    Sammanfattning : With a rising global mean temperature caused by increased emission of greenhouse gases into the atmosphere biofuels are considered as a possible solution to the greenhouse effect. One of the potential biofuels is furans and this report aims to determine their lifetime in polluted air. LÄS MER

  5. 4. Furans : the potential atmospheric impact of a next-generation bio fuel

    Kandidat-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Författare :Stina Ausmeel; [2012]
    Nyckelord :furan; fuel; environment; chemistry; climate; atmosphere; Earth and Environmental Sciences; Chemistry; Physics and Astronomy;

    Sammanfattning : There has been a worldwide debate about “the climate change” over the past years, accompanied with the efforts in finding a more environmental friendly way to live. One area of research is to find replacements for the fossil fuels, which is the major energy source today. LÄS MER

  7. 5. Är saltglaseringsindustrin en källa till tidig organokloridförekomst?

    Kandidat-uppsats, Sektionen för lärarutbildning (LUT)

    Författare :Tom Liljeroos; [2009]
    Nyckelord :Organochlorides; PCB; PCDD F; Salt glazing industry; Organoklorider; PCB; PCDD F; Saltglaseringsindustri;

    Sammanfattning : Abstract. The levels of dioxin and comparable substances rose to a large extent in our environment during the second half of the 20'Th century. This was the result of the synthesis of, and careless usage of these substances in cooling fluids, hydraulics, pesticides etc. LÄS MER