Search for dissertations about: "hydrogen tolerance"

Showing result 1 - 5 of 13 swedish dissertations containing the words hydrogen tolerance.

  1. 1. Physiology of Caldicellulosiruptor saccharolyticus: a hydrogen cell factory

    University dissertation from Applied Microbiology (LTH)

    Author : Karin Willquist; Lunds universitet.; Lund University.; [2010]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; growth activation; hydrogen tolerance; hydrogen yields CO2 inhibition; physiology; enzyme kinetics; Caldicellulosiruptor saccharolyticus; biohydrogen; energy metabolism;

    Abstract : Popular Abstract in Swedish Biovätgas är en mycket energirik och förnyelsebar energikälla för bilar och elproduktion som genererar mycket lite av växthusgasen koldioxid. Vätgasen kan framställas av billiga råvaror såsom hushållsavfall, industriellt avfall och av lignocellulosa. READ MORE

  2. 2. Small-Scale Production of Fuel-Cell Hydrogen

    University dissertation from Lund University

    Author : Christian Hulteberg; Lunds universitet.; Lund University.; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hydrogen; Chemical Engineering; Catalysis; Small-Scale;

    Abstract : The work presented here aims at producing hydrogen for proton-exchange fuel-cell applications from hydrocarbons. This thesis describes an integrated catalytic converter comprising a steam-reforming reactor (heat of reaction supplied by catalytic combustion), a water-gas shift reactor and a preferential oxidation of carbon monoxide reactor, and the work performed on the fuel processing catalysts therein. READ MORE

  3. 3. Hydrogen Production by Caldicellulosiruptor species: The Organism and the Metabolism

    University dissertation from Lund University

    Author : Ahmad Zeidan; Lunds universitet.; Lund University.; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Extreme thermophile; Caldicellulosiruptor; Biohydrogen; Co-culture; Coexistence; Hydrogen tolerance; Genome-scale reconstruction; In silico; Flux balance analysis;

    Abstract : Popular Abstract in Swedish Hydrogen holds a great promise as an efficient and clean future energy carrier due to its high energy density and lack of pollutant generation. Anaerobic degradation of organic substrates by heterotrophic microorganisms enables the production of hydrogen from a wide spectrum of agricultural feedstock and waste products. READ MORE

  4. 4. Maturation and Regulation of Cyanobacterial Hydrogenases

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Åsa Agervald; Uppsala universitet.; [2009]
    Keywords : Biohydrogen; Cyanobacteria; Nostoc sp. PCC 7120; Nostoc punctiforme PCC 73102; Hydrogenase; Maturation; Transcriptional regulation; CyAbrB; CalA; FeSOD;

    Abstract : Accelerated global warming plus an increasing need for energy is an equation not easily solved, thus new forms of sustainable energy production are urgently requested. In this context hydrogen production based on a cyanobacterial system offers an environmentally friendly alternative for energy capture and conversion. READ MORE

  5. 5. Structural and interaction studies of polysaccharides by NMR spectroscopy

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Lena Lundqvist; Sveriges lantbruksuniversitet.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : In this thesis, polysaccharides of different origins have been investigated by NMR spectroscopy with regard to structures and interactions. In paper I, hydrogen bonding interactions in kappa- (κ) and kappa/mu- (κ/μ) hybrid carrageenan oligosaccharides were studied by NMR spectroscopy of hydroxy protons. READ MORE