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blade impeller
A thermophilic methanogenic bacterium, Methanococcus thermolithotrophicus, was grown on H2 and CO2 in both batch and continuous culture, in a fermentor equipped with either a straight blade impeller or a Rushton impeller.
      
A mathematical model is developed to describe the behavior of melts, agitated by a flat blade impeller, mounted on a rotating shaft.
      
To examine the results obtained from the single impeller systems, the same approach is applied to measure >amp;lt; KLa>amp;gt; values for the triple stage 6-blade impeller system (3x6) and quadruple stage 4-blade impeller system (4×4).
      
Figure 1 demonstrates the computed flow pattern and void distribution in a mixing vessel with a downward pumping, pitched blade impeller.
      
In general, except in the spinner flasks used in laboratories, a pitch blade impeller or a marine type impeller is used for agitation.
      
The backwardcurved four-blade impeller has 1 and 2 angles of 80 and 85 deg, respectively.
      
 

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