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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)
Answers all questions i. Illustrate Zeroth law of thermodynamics. ii. A gas contained in a cylinder is compressed, the work neede for compression being 5000 KJ. During the pr
Gathering Lines: A gathering line, also called a ladder track, is one into which a number of parallel tracks merge. This is shown in Figure. It is used in marshalling yards.
parameters specified in a steam boiler
An inside cylinder locomotive has its cylinder centre lines 0.70 m apart and has a stroke of 0.60 m. The rotating mass per cylinder is similar to 150 Kg. and the reciprocating mass
Q. What is Tantalum? Tantalum is one of the most corrosion-resistant metals known. However, the high cost of tantalum has limited its commercial use as an all-purpose corrosio
Description & Derivation of Mechanical Vibration in Strings, Rods and Aero Foil Flutter
Determine the critical load (W crit ) to cause elastic instability of the rigidly jointed frame shown in Figure Q2. The frame members have constant bending stif
Write brief notes on the following : (a) Draught System (b) Binary Vapour Cycle (c) Cooling Towers (d) Governing of steam turbines
Determine the force: Determine the force P needed to start block B illustrated in Figure moving to the right if the coefficient of friction is 0.3 for all surfaces of contact.
Power Metallurgy- The more appropriate name should be "Particulate Processing Methods". Here the particles of various sizes of metals, ceramics, polymers and glass etc, are presse
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