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Visar resultat 1 - 5 av 43 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Modelling the chemical recycling of plastic waste via pyrolysis and analysing integration with existing refinery infrastructure

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Simon Dahl; [2023]
    Nyckelord :Pyrolysis; Recycling; Integration; Modelling; Simulation; Techno-economic; Plastic; Chemical engineering; Technology and Engineering;

    Sammanfattning : Current plastic management is unsustainable as large amounts of plastic end up landfilled or in the ocean, necessitating an expansion of waste management infrastructure. Pyrolysis is a viable chemical recycling option, and in this report a pyrolysis model is constructed in Aspen Plus. LÄS MER

  3. 2. Cultivation of Yarrowia lipolytica on a hydrolysate based on food waste

    Master-uppsats, SLU/Department of Molecular Sciences

    Författare :Hanna Norrman; [2023]
    Nyckelord :Yarrowia lipolytica; hydrolysate; food waste; fish feed; volatile fatty acids;

    Sammanfattning : Interest in replacing fish oil and fish meal as fish feed ingredients with more socially, environmen-tally, and economically sustainable alternatives has increased in recent years. One such alternative could be the use of yeast biomass. LÄS MER

  4. 3. SINGLE AND COMBINED EXPOSURE OF POLYSTYRENE NANOPARTICLES AND NORTH SEA MARINE OIL IN TWO IN VITRO FISH MODELS

    Master-uppsats, Göteborgs universitet / Institutionen för biologi och miljövetenskap

    Författare :Monica Olsson; [2022-10-05]
    Nyckelord :Polystyrene nanoparticles; crude oil; combined toxicity; cytotoxicity; oxidative stress;

    Sammanfattning : The awareness of micro-and nanoplastic pollution and its impact on the marine ecosystem has increased over the last decade. Nanoplastics may affect aquatic organisms since their small size and high surface-to-volume ratio increases their bioavailability and ability to cross biological membranes. LÄS MER

  5. 4. STARTING FROM THE BOTTOM: USING LOW TROPHIC SPECIES IN SALMON FEEDS. Assessing the environmental performance of novel salmon feeds with LCA .

    Master-uppsats, Göteborgs universitet / Institutionen för biologi och miljövetenskap

    Författare :Moritz Hempel; [2022-08-30]
    Nyckelord :LCA; Salmon aquaculture; novel feeds; seaweed; blue mussel;

    Sammanfattning : Over the past 30 years, the formulation of salmon feeds has shifted from being based on marine ingredients like fishmeal and fish oil towards more plant-based ingredients. This shift was caused by limited supply of wild fish and general sustainability concerns related to using forage fish for feed, so they were mainly replaced with vegetable-protein. LÄS MER

  7. 5. Is omega-3 from algae a good substitute to fish oil – in human nutrition?

    Kandidat-uppsats, SLU/Department of Molecular Sciences

    Författare :Maria Pia Karlsson Rattenni; [2022]
    Nyckelord :omega-3; EPA; DHA; algae oil; fish oil; fish oil substitute; PUFA; LC-PUFA; human nutrition; health benefits; algae as n-3 source;

    Sammanfattning : Polyunsaturated fatty acids have been proven to be important for human health, especially the omega 3 and 6. Humans cannot synthesise these fatty acids by themselves and need therefore to get them from external sources. Omega-6 is found in many different foods, such as flaxseeds, walnuts, and vegetable oils. LÄS MER