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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)
It is essential to select a flat belt drive for a compressor running at 720 r.p.m which is driven by a 25kW, 1440 r.p.m. motor. Space is available for a distance of 3m. The belt is
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Q. Find out M.I. of T section as shown in figure given below about X - X and Y - Y axis through center of gravity of the section. Figure Sol.:
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Submerged Arc Welding Single pass filler welds upto (8.0 mm) maximum and groove welds made with a single pass or a single pass each side, may be made using an E7os-x elect
Traveling at a speed of 16.0 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the roa
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Q. Show drain systems used in plant? Process/power plants usually have a variety of different drain systems to collect the different types of liquid effluent. One of these is u
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