Exercise C
31
Calculate
Λ
/
Λ
0
which is the equivalent to C/C
0
where
Λ
is the conductivity at time
t
,
and
Λ
0
is the conductivity of KCL at the steady state (maximum conductivity
reached), for readings of
t
throughout the experiment.
Plot this value against
t
and calculate the Neperian logarithm of
Plot
vs time and calculate the slope (straight line graph passing
through the origin). The slope is the average residence time t
R
which should be equal
to
where V is the reactor volume and F is the total flow rate into the reactor.
Treatment Results
The normalisation of the concentration
can be plotted against time:
To calculate the experimental residence time:
Calculate the Neperian Logarithm of
Plot
vs time and calculate the slope