Chapter 21, Problem 20P

The outflow concentration from a reactor is measured at anumber of times over a 24-hr period:

t, hr	0	1	5.5	10	12	14	16	18	20	24
c, mg/L	1	1.5	2.3	2.1	4	5	5.5	5	3	1.2

The flow rate for the outflow in m³/scan be computed with the following equation:

$Q\left(t\right)=20+10\sin \left(\frac{2\pi }{24}\left(t-10\right)\right)$

Use the best numerical integration method to determine the flow-weighted average concentration leaving the reactor over the 24-hr period,

$\bar{c}=\frac{{\displaystyle {\int }_0^{t}Q\left(t\right)c\left(t\right)dt}}{{\displaystyle {\int }_0^{t}Q\left(t\right)dt}}$