Question

What is the aspect ratio of bubble column bioreactors?

(a) 1-3

(b) 3-5

(c) 4-6

(d) 8-10

I had been asked this question in semester exam.

This question is from Antibiotics topic in section Antibiotics & Enzyme Immobilization of Drug Biotechnology

Answer 1

Right choice is (c) 4-6

To explain: Air or gas sparged inside a bioreactor such an ad bubble column reactor through the use of perforated pipes or plates are called spargers. The flow rate of the air/gas influences the some factors —O2 transfer, mixing. The bubble column bioreactors may be fitted with perforated plates to improve its performance. The vessel used for bubble column bioreactors is usually cylindrical and has an aspect ratio of 4-6 (i.e., height to diameter ratio).