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Careful consideration of the bioreactor agitation and aeration system is required in order to maintain a homogeneous environment and provide sufficient oxygen transfer rates to meet cellular metabolic requirements.
Both agitation and aeration need to be considered together as they have an influence on the mechanical design of the fermenter, the oxygen transfer characteristics of the vessel and its power requirements.
There are a number of components that contribute to the aeration and agitation system efficiency including the height/diameter ratio. These are:
i. the impeller system (marine, flat-blade turbine etc) ii. the baffles (can also provide additional cooling capability) iii. the air sparger (ring, cross orifice, porous, nozzle) iv. the drive seal (mechanical, magnetic)
Differentiate between hot working and cold working process
Compute amplitude and frequency of the particle: The displacement of a particle is described by x = 5 + 3 cos 3 t. Determine the position of the particle at t = 3 seconds. Com
First Law for closed system undergoing cycle: In accordance to first law, when a closed system undergoes thermodynamic cycle, the net heat transfer is equal to network transfe
Find out the velocity of the bullet: A bullet of weight W 1 = 5 N is fired into a body B 2 of weight W 2 = 45 N suspended by a string of length L = 1 metres. Because of i
Carnot vapour Cycle: It is convenient to analyze the performance of steam power plants by means of idealized cycles that are theoretical approximations of real cycles. The Car
Q. Production Test Rings? The frequency for the tests shall be as follows: • One sample at the 10th joint • One sample at the 75th joint • One sample at the 300th join
solve the following differential equation: dy/dx-(1+1/x)y=y^2
Q. Steam Generator Load Balancing? The pressure controller output is cascaded to individual stations, one for each boiler. These allow selective increase or decrease of the du
Location with Respect to Depth The depth below ground level at which the bottom of a foundation structure is located depends on number of factors, the most important of which
state a note on reversible and irreversible process?
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