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  • 1
    Electronic Resource
    Electronic Resource
    Cometabolic biodegradation of methyl t-butyl ether by Pseudomonas aeruginosa grown on pentane (1999)
    Springer
    Applied microbiology and biotechnology 51 (1999), S. 498-503 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract A bacterial strain identified as Pseudomonas aeruginosa was isolated from a soil consortium able to mineralize pentane. P. aeruginosa could metabolize methyl t-butyl ether (MTBE) in the presence of pentane as the sole carbon and energy source. The carbon balance for this strain, grown on pentane, was established in order to determine the fate of pentane and the growth yield (0.9 g biomass/g pentane). An inhibition model for P. aeruginosa grown on pentane was proposed. Pentane had an inhibitory effect on growth of P. aeruginosa, even at a concentration as low as 85 μg/l. This resulted in the calculation of the following kinetic parameters (μmax = 0.19 h−1, K s = 2.9 μg/l, K i = 3.5 mg/l). Finally a simple model of MTBE degradation was derived in order to predict the quantity of MTBE able to be degraded in batch culture in the presence of pentane. This model depends only on two parameters: the concentrations of pentane and MTBE.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530051423
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Biofiltration of toluene vapors using a model support (2000)
    Springer
    Bioprocess engineering 23 (2000), S. 479-486 
    Details
    ISSN: 0178-515X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract  Vermiculite was used as biofiltration model support to study the degradation of toluene vapors. Thermal Gravimetric Analysis, cell respirometry, microcosms tests and qualitative data from Scanning Electron Microscopy (SEM) were used to estimate all the parameters (biofilm surface area, biofilm thickness, active and total biofilm density and maintenance coefficient) involved in a steady state biofiltration model. A global error of 9.7% between experimental data and the mathematical model for three different Empty Bed Residence Time (EBRT) was obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004499900181
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Citric acid and polyols production by Aspergillus niger at high glucose concentration in solid state fermentation on inert support (1995)
    Springer
    Biotechnology letters 17 (1995), S. 219-224 
    Details
    ISSN: 1573-6776
    Keywords: Solid State Fermentation ; Inert Support ; Citric Acid ; Osmoregulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary Aspergillus niger cultures at high initial glucose concentration (up to 400 g/1) on Amberlite as inert support were carried out. Citric acid was accumulated in the support showing high concentration (94.54 g/l) and productivity (1.35 g/l h) without inhibition related to the presence of metals (Mn2+, Zn2+, Co2+, Cu2+, and Ca2+) at high concentrations. Citric acid accumulation was clearly associated with both, glycerol production and to the age of the culture. Glycerol and erythritol, the major osmoregulator metabolites, were also produced (8.16 and 24.57 g/l respectively) at 400 g/l of glucose.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00127992
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    Paper (German National Licenses)
    Fulltext
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