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6, O O J

Fig. 9.3. Mechanically-agitated bioreactors that should only be used in the continuously-mixed mode because they do not give good aeration of the bed when it is static. (a) The stirred drum (Nagel et al. 2001a); (b) the Z-blade mixer of Ellis et al. (1994); (c) the horizontal stirred tank bioreactor of Berovic and Ostroversnik (1997); (d) end and side views of a stirred drum with a perforated bottom ("stirred perforated-drum")

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