Question

By taking Q10 and Q11 into account and at the flow rate of Q10, what concentration of ethanol is produced?

(a) 5.1 g l^-1

(b) 5.3 g l^-1

(c) 5.5 g l^-1

(d) 5.7 g l^-1

The question was posed to me in a national level competition.

The origin of the question is Ideal Reactor Operation topic in division Reactor Engineering of Bioprocess Engineering

Answer 1

Right option is (c) 5.5 g l^-1

The explanation is: Assuming ethanol is not present in the feed, PI = 0. Steady-state product concentration is given by: