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CHAPTER 9 AERATION and AGITATION (important position of oxygen (depends…
CHAPTER 9
AERATION and AGITATION
important position of oxygen
continuous
aeration
depends on C-sources
what are the C-sources for microorganisms?
calculation for [Oxygen required] :red_flag: SL9
effect of DOC on oxygen uptake
Step 1 to 3
Step 1
calculation SL20
OTR = d CL/ d t = KL . a( C* -CL)
CL: the concentration of dissolved oxygen in the fermentation broth (mmol/l) (measurement with oxygen-electrode)
(C* -CL)
KL . a
how to determine this combination?
factors effect K L . a
vicosity // rheology
2 more items...
flow rate
agitation degree
a derived calculation
under O2 is lthe imiting substrate
OTR = d CL/ d t = KL a( C
-CL)
*= QO2. x
fluid rheology
vicosity
WITH
vicosity is a complex characteristic and affects the fermentation. [does not need to remember how to calculate it] :red_flag:
relation bw vicosity and K L. a
increasingviscosity causes decreasing KL . a
