Sökning: "biodegradability"

Visar resultat 1 - 5 av 15 uppsatser innehållade ordet biodegradability.

  1. 1. Development of polymer based composite filaments for 3D printing

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad materialvetenskap

    Författare :Elin Åkerlund; [2019]
    Nyckelord :3D-printing; fused deposition modeling FDM ; composite filaments; biocompatible materials; biodegradability; medical applications; scaffold materials; poly lactic acid PLA ; polycaprolactone PCL ; hydroxyapatite HA ; mechanical properties; thermal stability; chemical composition; morphological characterization; accelerated degradation study; polymer degradation behavior;

    Sammanfattning : The relatively new and still growing field of 3D-printing has opened up the possibilities to manufacture patient-specific medical devices with high geometrical accuracy in a precise and quick manner. Additionally, biocompatible materials are a demand for all medical applications while biodegradability is of importance when developing scaffolds for tissue growth for instance. LÄS MER

  2. 2. Ackumuleringspotential av PHA  från restströmmar inom pappersbruk : En studie om PHA från Gruvöns, Bäckhammars och Skoghalls bruk

    Kandidat-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Alfred Berglund; [2018]
    Nyckelord :Ackumulering; PHA; restströmmar; pappersbruk;

    Sammanfattning : Plastic is one of the most universal materials used today. With a good future view, with new implementations and applications, it makes a lot of time to look at the production and management of the plastic materials. Plastic materials that have been used in our daily lives cause serious environmental problems. LÄS MER

  3. 3. Improving methane production using hydrodynamic cavitation as pre-treatment

    Master-uppsats, Linköpings universitet/Tema Miljöförändring

    Författare :Louise Abrahamsson; [2016]
    Nyckelord :Hydrodynamic cavitation; steam explosion; anaerobic digestion; hydrolysis; bmp; particle size distribution; methane; particle size reduction; food waste; sludge; grass; biogas; energy; renewable energy; Scandinavian biogas fuels AB; Scandinavian biogas; cavitation; biogas production; biomethane potential; Linköping university; Hydrodynamisk kavitation; kavitation; ångexplosion; rötning; anaerob rötning; hydrolys; BMP; partikelstorlekreducering; biometanpotential; biogas; metan; metangas; alger; saccharina latissima; ascophyllum nodosum; gräs; matavfall; avloppsslam; förnybar energi; Linköpings universitet; examensarbete biogas; examensarbete kavitation;

    Sammanfattning : To develop anaerobic digestion (AD), innovative solutions to increase methane yields in existing AD processes are needed. In particular, the adoption of low energy pre-treatments to enhance biomass biodegradability is needed to provide efficient digestion processes increasing profitability. LÄS MER

  4. 4. Production and biodegradability of dissolved organic carbon from dIfferent litter sources

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

    Författare :Carlos Arellano; [2015]
    Nyckelord :biogeochemical cycles; physical geography and ecosystem analysis; dissolved organic carbon; carbon cycle; soil biogeochemistry; Earth and Environmental Sciences;

    Sammanfattning : The movement of carbon on Earth is based on exchange between pools that represent carbon in different physical forms, differing in chemical composition, structure and function. Dissolved organic carbon plays an important role in ecosystems because of its mobility, which can be relatively high in saturated soils, and because it is the most available fraction of organic matter for microorganisms in soil, being particularly active in microbial degradation processes through soil profile. LÄS MER

  5. 5. Assembly of whey protein nanofibrils into macroscopic filaments

    Master-uppsats, KTH/Mekanik

    Författare :Kamada Ayaka; [2015]
    Nyckelord :;

    Sammanfattning : Recently, it has been reported that the increasing number of plastic are significantly floated in the sea, because they are difficult to be degraded naturally. This lack of biodegradability requires us to develop new environmental-friendly material replacing current plastics. LÄS MER