Conclusions on Intermittently Mixed Forcefully Aerated Bioreactors

It is possible to propose the following general principles for beds that are mixed infrequently so as not to cause overly much damage to the fungus:

• Water limitations will not be an overly large problem in intermittently agitated beds, even with relatively few mixing events. Water limitations can still occur in specific regions of the bed, so care will need to be taken in the selection of the criterion for initiating mixing events, that is, a criterion should not be chosen that allows large regions of the bed to suffer from water limitation for significant periods. In the case study, water limitations could be greatly reduced by increasing the outlet gas relative humidity set point.

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