Removing the boundary layer, CAS would decrease. – McqOptions

MCQOPTIONS

1.	Removing the boundary layer, CAS would decrease.
A.	True
B.	False
Answer» C.

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Refer to Q6 and calculate the value of CAs.
Denitrifying bacteria are immobilised in gel beads and used in a stirred reactor for removal of nitrate from groundwater. At a nitrate concentration of 3 g m-3, the conversion rate is 0.011 g s-1 m-3 catalyst. The effective diffusivity of nitrate in the gel is 1.5×10-9 m2 s-1, the beads are 6 mm in diameter, and the liquid-solid mass-transfer coefficient is 10-5 m s-1. Km for the immobilised bacteria is approximately 25 g m-3. What is the value of an observable modulus for external mass transfer, Ω?
Removing the boundary layer, CAS would decrease.
If Ω << 1, then _________
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