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  • 1990-1994  (2)
  • 1993  (2)
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  • 1990-1994  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    A forced flow membrane enzyme reactor for sucrose inversion using molasses (1993)
    Springer
    Bioprocess and biosystems engineering 9 (1993), S. 31-35 
    Details
    ISSN: 1432-0797
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract We have developed a bioreactor which uses enzyme immobilized within a ceramic membrane support (1 mm thickness). Substrate is forced through the membrane by cross-flow filtration with the reaction taking place during the process of crossing the membrane. The bioreactor is termed forced-flow membrane enzyme reactor, FFMER. Invertase, which uses sucrose to form glucose and fructose, was tested in this system. The immobilized invertase membrane converted 100% of the sucrose in a feed stream made up of a 50% molasses solution. Because molasses contains many substances besides sucrose, this method is applicable to processes using substrates present in “impure” feeds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00389537
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Carbon dioxide decomposition into carbon with the rhodium-bearing magnetite activated by H2-reduction (1993)
    Springer
    Journal of materials science 28 (1993), S. 860-864 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The CO2 decomposition into carbon with the rhodium-bearing activated magnetite (Rh-AM) was studied in comparison with the activated magnetite (AM). The Rh-AM and the AM were prepared by flowing hydrogen gas through the rhodium-bearing magnetite (Rh-M) and the magnetite (M), respectively. The rate of activation of the Rh-M to the Rh-AM was about three times higher than that of the M to the AM at 300 °C. The reactivity for the CO2 decomposition into carbon with the Rh-AM (70% CO2 was decomposed in 40 min) was higher than that with the AM (30% in 40 min) at 300 °C. The Rh-M was activated to the Rh-AM at a lower temperature of 250 °C, and the Rh-AM decomposed CO2 into carbon at 250 °C. On the other hand, the M was little activated at 250 °C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00400865
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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