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Smaller bubbles are a nuisance to the fermenters.

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+1 vote
in Fermentation Technology by (72.1k points)
Smaller bubbles are a nuisance to the fermenters.

(a) True

(b) False

The question was posed to me in an online interview.

I want to ask this question from Aeration and Agitation topic in division Aeration and Agitation of Fermentation Technology

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+2 votes
by (424k points)
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The correct option is (a) True

Easy explanation: The smaller bubbles are a nuisance to the fermenters. They occupy the larger interfacial area and coalesce into larger bubbles. The gas hold-up is also higher in smaller bubbles and thus have low bubble rise velocity. This increases the value of KLa.

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