Bissoy.com
Doctors Medicines MCQs Q&A

Related Questions

Main functions of baffles in a bioreactor are
P. To prevent a vortex.
Q. To increase aeration.
R. To reduce interfacial area of oxygen transfer.
S. To reduce aeration rate.
Consider the following statements regarding contact stabilization process: 1. Primary settling tank is not required in some cases. 2. BOD removal occurs in two stages. 3. Aeration volume requirements are approximately 50% of those of a conventional – or tapered – aeration plant. 4. Returned sludge is aerated for 30 min to 90 min in sludge aeration tank. Which of the above statements are correct?
The bench-top bioreactor comes under which type of bioreactor?
A bioreactor of working volume 50 m3 produces a metabolite (X) in batch culture under given operation conditions form a substrate (S). The final concentration of metabolite at the end of each run was 1.1kg m-3. The bioreactor was operated to complete 60 runs in each year. What will be the annual output of the system (production of metabolite (X)) in Kg per year?
________ is the part of a bioreactor helping in maintaining the homogeneity of the contents of the bioreactor.
Wash out (as defined by D = μmax) of a continuous stirred tank fermenter is characterized by (X = biomass, S = substrate concentration in bioreactor, S0 = substrate concentration in feed, P = product concentration in bioreactor).
A bacterial culture having a specific oxygen uptake rate of 5 mmol O2 (g DCW)-1 hr-1 is being grown aerobically in a fed-batch bioreactor. The maximum value of the volumetric oxygen transfer coefficient is 0.18 s-1 for the stirred tank bioreactor and the critical dissolved oxygen concentration is 20% of the saturation concentration (8 mg mL-1). The maximum density to which the cells can be grown in the fed-batch process without the growth being limited by oxygen transfer, is approximately
What is the retention time considered for aeration tanks in a moving bed bioreactor system?
Which of the following bioreactor mix intermittently without forced aeration?
Calculate the volume of the aeration tank required for the following data: Flow: 800 m3/d BOD: 1000 mg/L F/M ratio: 0.15(extended aeration) MLSS : 3500 mg/L