Identify the part of a bio-reactor which is used as a foam breaker from the given figure (with parts labelled A: flat-bladed impe…

Question

Identify the part of a bio-reactor which is used as a foam breaker from the given figure (with parts labelled A: flat-bladed impeller, B: motor, C, D: sterile air outlet at the base).

1. A. A
2. B. B
3. C. D
4. D. C (Correct answer)

Correct Answer

Option D — C

Detailed Solution & Explanation

The correct answer is C.

Key Points

• In a stirred-tank bioreactor: B = motor, A = flat-bladed impeller, D = sterile air (sparger inlet), and C = foam breaker.
• The foam breaker (C) controls and breaks the foam formed during the fermentation/agitation process.