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Small scale bioreactor cultivation. Picture describes a mammalian cell bench - scale down cultivations. A scale-down bioreactor is a miniature model designed to mimic or reproduce large-scale bio-processes or specific process steps on a smaller scale. These models play an important role during process development stage by fine-tuning the minute ...
General structure of a continuous stirred-tank type bioreactor. On the basis of mode of operation, a bioreactor may be classified as batch, fed batch or continuous (e.g. a continuous stirred-tank reactor model). An example of a continuous bioreactor is the chemostat. [citation needed]
The continuous stirred-tank reactor (CSTR), also known as vat-or backmix reactor, mixed flow reactor (MFR), or a continuous-flow stirred-tank reactor (CFSTR), is a common model for a chemical reactor in chemical engineering and environmental engineering. A CSTR often refers to a model used to estimate the key unit operation variables when using ...
The most familiar form of continuous reactor of this type is the continuously stirred tank reactor (CSTR). This is essentially a batch reactor used in a continuous flow. The disadvantage with a single stage CSTR is that it can be relatively wasteful on product during start up and shutdown.
Stirred tank bioreactors are used for the biooxidation of gold. [16] While stirred tanks have been used to bioleach cobalt for copper mine tailings, [18] these are costly systems that can reach sizes of >1300m 3 meaning that they are almost exclusively used for very high value minerals like gold. [16] Illustration of the process of uranium heap ...
Cut-away view of a stirred-tank chemical reactor with a cooling jacket Chemical reactor with half coils wrapped around it. The most common basic types of chemical reactors are tanks (where the reactants mix in the whole volume) and pipes or tubes (for laminar flow reactors and plug flow reactors)
Cell growth in bioreactors depends on a wide range of environmental and physiological conditions such as substrate concentration. With regards to bioreactor cell growth, substrate refers to the nutrients that the cells consume and is contained within the bioreactor medium. Cell growth can either be substrate limited or inhibited depending on ...
Cross-sectional diagram of stirred tank reactor. Baffles are flow-directing or obstructing vanes or panels used to direct a flow of liquid or gas. It is used in some household stoves [1] and in some industrial process vessels (tanks), such as shell and tube heat exchangers, chemical reactors, and static mixers.