Concentration polarization can be reduced further by

Question: Turbine impeller consists of flat impeller blades with
[A].

a vertical pitch welded directly to the shaft

[B].

a angled pitch welded directly to the shaft

[C].

a vertical pitch welded to a horizontal disk

[D].

a angled pitch welded to a horizontal disk

Answer: Option C

Explanation:

No answer description available for this question.

Question: A flooded impeller will lead to poor oxygen transfer rates because
[A].

bubbles tend to coalesce under the impeller

[B].

bubbles tend to break down too rapidly under high shear conditions

[C].

bubbles tend to move too quickly through the bulk liquid

[D].

the cells clog up the surface of the bubble

Answer: Option A

Explanation:

No answer description available for this question.

Question: The dynamic technique is based on the
[A].

oxygen material balance in an aerated batch fermenter during the growth of microorganisms

[B].

change of the oxygen concentration

[C].

oxidation of the sodium sulfite to sodium sulfate

[D].

oxygen material balance in a fermenter

Answer: Option A

Explanation:

No answer description available for this question.