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For high viscous fluids, air-driven reactors are preferred over stirred vessels.(a) True(b) FalseI had been asked this question in class test.This key question is from Bioreactor Configurations in portion Reactor Engineering of Bioprocess Engineering

Answer»

Right choice is (b) False

For EXPLANATION: If the culture has high viscosity, sufficient mixing and mass transfer cannot be provided by air-driven reactors. Stirred vessels are more SUITABLE for VISCOUS liquids because greater power can be input by mechanical AGITATION. Nevertheless, mass- transfer rates decline rapidly in stirred vessels at VISCOSITIES greater than 50-100 cP.



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