Question

Study the given diagram below of the stirred tank fermenter. What is the function of part labeled A?

• A. To maintain optimum pH
• B. To control the foam within the reactor
• C. To maintain optimum oxygen concentration
• D. To facilitate even mixing.

Answer 1

Answer: (B)

A stirred-tank reactor is usually cylindrical or with a curved base to facilitate the mixing of the reactor contents. The stirrer facilitates even mixing and oxygen availability throughout the bioreactor. The bioreactor has an agitator system, an oxygen delivery system, and a foam control system, a temperature control system, a pH control system, and sampling ports.