Question

The most widely used expression for the growth rate of micro-organisms is given by Monod:

(a) Total rate of microbial growth,

(b) True

(c) False

I had been asked this question in class test.

This key question is from Principle for the Preparation of Water Supply in portion Valuation, Reports Technical and Design Data of Civil Engineering Drawing

Answer 1

The correct answer is (a) Total rate of microbial growth,

The best I can explain: Biomass Growth Rate

The most widely used expression for the growth rate of micro organisms is given by Monod:

Total rate of microbial growth,

where,

mm = maximum specific growth rate

X = micro organism concentration

S = substrate concentration

Ks = substrate concentration at one half the maximum growth rate

Similarly, rate of substrate utilization,

     dS = k X S

     dt    Ks+ S

where,

k = maximum specific substrate utilization rate.