A two-stage chemostat system is used for production of secondary metabolite. The volume of each reactor is 0.5 m³; the flow rate of feed is 50 l h^{- 1}. Mycelial growth occurs in the first reactor; the second reactor is used for product synthesis. The concentration of substrate in the feed is 10 gl^-1. Kinetic and yield parameters for the organism are:

                                                            

Assume that product synthesis is negligible in the first reactor and growth is negligible in the second reactor. Determine substrate concentrations entering the second reactor.

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TLS Online TPP Program

#Question id: 27187

#Section 5: Bioprocess Engineering and Process Biotechnology

A zero order reaction in A has a rate constant of 0.003 molL^-1sec^-1. How long will it take for A’s initial concentration to fall from 0.10 M to 0.075 M?

TLS Online TPP Program

#Question id: 27188

#Section 5: Bioprocess Engineering and Process Biotechnology

k for a zero order reaction is 2×10^-2 mol/L s. If the concentration of the reactant after 25s is 0.5 M. Calculate the initial concentration of the reactant.

TLS Online TPP Program

#Question id: 27189

#Section 5: Bioprocess Engineering and Process Biotechnology

How long will it take for the initial concentration of A to fall from 0.20 M to 0.075, if the rate constant for a reaction of zero-order in A is 0.035 mol L^–1 s^–1.

TLS Online TPP Program

#Question id: 27190

#Section 5: Bioprocess Engineering and Process Biotechnology

A substrate is consumed in a zero order reaction such that the concentration falls from 40 g/l to 20 g/l in 4 h. How long will it take the substrate to fall from 20 g/l to 2 g/l:

TLS Online TPP Program

#Question id: 27191

#Section 5: Bioprocess Engineering and Process Biotechnology

The half-life of a zero order reaction is 30 minutes. What is the concentration of the reactant left after 60 minutes?

TLS Online TPP Program

#Question id: 27192

#Section 5: Bioprocess Engineering and Process Biotechnology

Q) For a single substrate reaction, doubling the substrate concentration increases the rate by 10 fold. The order of the reaction is