Question

Mixing is usually better in external-loop than internal-loop reactors in air-lift reactors.

(a) True

(b) False

I have been asked this question during an interview for a job.

Asked question is from Bioreactor Configurations topic in division Reactor Engineering of Bioprocess Engineering

Answer 1

The correct answer is:

(a) True

In air-lift reactors, external-loop reactors typically provide better mixing than internal-loop reactors. This is because the external-loop configuration allows for more efficient circulation and better gas-liquid mixing, which helps in improving mass transfer and minimizing dead zones. Internal-loop reactors, on the other hand, may have limitations in mixing due to the configuration of the internal riser and downcomer sections.