Phenol can be oxidized by a variety of compounds. Assume it has a first order de

Question

Phenol can be oxidized by a variety of compounds. Assume it has a first order decay rate of 0.12/hr.  You have a plug flow and a complete mix tank that each have a 8 hour mean residence time for the volume of flow you need to treat.  Which of the following three configurations would perform the best (lead to the lowest concentration):

a.      A)  Put the flow into the plug flow tank, then pipe the effluent into the complete mix tank.

b.      B) Put the flow into the complete mix tank, then pipe the effluent into the plug flow tank.

c.      C)  Run both tanks in parallel, with

Explanation / Answer

b.      B) Put the flow into the complete mix tank, then pipe the effluent into the plug flow tank.

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