Question

A radioactive waste from a clinical laboratory contains 0.2 μCi (microcuries) of calcium-45 (45Ca) per litre. The reaction rate constant is 0.005/day. The radioactive calcium waste is treated in a pipe that is 200 m until it reaches below the maximum acceptable radioactivity of 0.01 μCi/L. Assume the pipe approximates a plug flow reactor.

(c) Calculate the lineal velocity (in m/h) of the radioactive calcium waste in the pipe so that the radioactivity is less than 0.01 μCi/L at the end of the pipe?

Answer 1

A. So mass balante eh da dt Vda dt Anea sfpipe elocld^ 0 --사> o) A 71

So ne 12= 0.3338 m/day 3338 mh 24 8,ould be F CA-45 1n pipe lineal Veleci
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