In a two-stage chemostat system, the volumes of the first and second reactors are V₁ = 500 l and V₂ = 300 l, respectively. The first reactor is used for biomass production and the second is for a secondary metabolite formation. The feed flow rate to the first reactor is F = 100 l/h, and the glucose concentration in the feed is S = 5.0 g/l. Use the following constants for the cells.

Determine cell concentration in the effluent of the first stage.

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TLS Online TPP Program

#Question id: 14416

#Section 2: General Biology

Bacteriostatic and Bactericidal functions can be achieved by

TLS Online TPP Program

#Question id: 14417

#Section 5: Bioprocess Engineering and Process Biotechnology

Which size is suitable for following, match the following?

Products                               filter 'pore diameter( nm) 

I.  yeast and fungi              P• 0.6-1.2

II. Bacteria                           q . 0.4- 0.8 

III. Antibiotics                        r. 300-10^3

IV. Organic acid                       s. 10^3- 10^4

TLS Online TPP Program

#Question id: 14418

#Section 5: Bioprocess Engineering and Process Biotechnology

It is required to provide a 20-m^3 fermenter with air at a rate of 10 m^3 min ^-I for a fermentation lasting 100 hours. From an investigation of the filter material to be used, the optimum linear air velocity was shown to be 0.15 m sec^-I, at which the value of K was 1.535 cm^-I. calculate The dimensions (radius and depth) of the filter? The air in the fermentation plant contained approximately 200 micro-organisms m^-3. The acceptable degree of contamination is one in a thousand.

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TLS Online TPP Program

#Question id: 14419

#Section 5: Bioprocess Engineering and Process Biotechnology

 The equation for Del factor is  

TLS Online TPP Program

#Question id: 14420

#Section 1: Engineering Mathematics

Solve the following system of equations x — y + z = 4, x — 2y + 2z = 9 and 2x + y + 3z = 1. 

TLS Online TPP Program

#Question id: 14421

#Section 1: Engineering Mathematics