Search for dissertations about: "bioethanol production thesis"

Showing result 16 - 20 of 55 swedish dissertations containing the words bioethanol production thesis.

  2. 16. Cellular Processes and Mechanisms in Saccharomyces cerevisiae Influencing Anaerobic Xylose Fermentation

    Author : Basti Bergdahl; Teknisk mikrobiologi; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Saccharomyces cerevisiae; Bioethanol; Xylose metabolism; Metabolomics; Regulation; Protein folding; Microbial growth;

    Abstract : In 2009 the EU approved two directives as a first initiative towards reducing greenhouse gas emissions and becoming independent of fossil fuels: the Renewable Energy Directive and the Fuel Quality Directive. As a result, the demand for biofuels will increase enormously over the next decade, both nationally and in the entire EU. READ MORE

  4. 17. Designing simultaneous saccharification and co-fermentation of lignocellulose for improved xylose conversion

    Author : Kim Olofsson; Avdelningen för kemiteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bioethanol; lignocellulose; simultaneous saccharification and co-fermentation; xylose fermentation;

    Abstract : Fuel ethanol from lignocellulose is one sustainable alternative to the fossil fuels of today. All sugars in the material must be utilized in order to achieve high overall ethanol yields. Baker’s yeast, Saccharomyces cerevisiae, has been engineered to ferment the pentose sugar xylose from lignocellulose to ethanol. READ MORE

  5. 18. Processing Lignocellulosic Biomass into Ethanol - Implications of High Solid Loadings

    Author : Benny Palmqvist; Avdelningen för kemiteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Lignocellulose; Bioethanol; High solid loadings; Biomass rheology; Enzymatic hydrolysis; Simultaneous Saccharification and co-Fermentation;

    Abstract : Fuel ethanol from lignocellulosic biomass has the potential to provide a sustainable replacement for traditional oil-based fuels. This dissertation assesses the processing of three different lignocellulosic materials – spruce, wheat straw and giant reed – at industrially relevant solid loadings. The work is divided into two main parts. READ MORE

  6. 19. Optimisation of Two-step Steam Pretreatment of Softwood for Bioethanol Production

    Author : Johanna Söderström; Avdelningen för kemiteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical technology and engineering; Kemiteknik och kemisk teknologi;

    Abstract : Fuel ethanol can be produced from lignocellulosics by an enzymatic process consisting of steam pretreatment, enzymatic hydrolysis, fermentation and ethanol refining. This thesis deals with the steam pretreatment step in the enzymatic process used for ethanol production from softwood, which is an abundant lignocellulosic raw material in the Northern hemisphere. READ MORE

  7. 20. Development of the Steam Pretreatment Process for Production of Ethanol from Lignocellulosic Biomass

    Author : Sanam Monavari; Bioteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Spruce; Ethanol production; Sugarcane bagasse; SSF; Fermentation; Enzymatic hydrolysis; SO2; Steam pretreatment; Acid catalyst;

    Abstract : At a time when natural petroleum resources are on the verge of depletion, and concern about climate change is increasing, the potential of lignocellulosic material for the production of bioethanol is well recognized. Ethanol can be produced from biomass through enzymatic hydrolysis and fermentation. READ MORE