Question

The internal effectiveness factor is symbolized by ________

(a) μ

(b) Φ

(c) η

(d) Ω

This question was addressed to me during an internship interview.

This question is from Minimising Mass Transfer Effects topic in division Heterogenous Reactions of Bioprocess Engineering

Answer 1

The correct answer is:

(b) Φ

In the context of heterogeneous reactions and minimizing mass transfer effects, the internal effectiveness factor is often denoted by Φ (phi). This factor is used to quantify the effectiveness of a catalyst or a porous material in a reaction system, taking into account both the rate of reaction and the rate of mass transfer. It is particularly relevant when there is resistance to mass transfer within the catalyst or the porous medium, which can limit the rate of reaction in practical applications.