Which one of the following bioreactor configurations is the basis for a trickling biological filter?

Which one of the following bioreactor configurations is the basis for

1.	Which one of the following bioreactor configurations is the basis for a trickling biological filter?
A.	Stirred tank
B.	Packed bed
C.	Air lift
D.	Fluidized bed
Answer» C. Air lift

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Which one of the following bioreactor configurations is the basis for a trickling biological filter?

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