Not a doctor… 
You’re normalizing time with respect to column volume. Hence, it is expected that the breakthrough comes at a similar point on your plot. If you plot the breakthrough over time, you can see the effect of different flow rates.
Not a doctor…
You’re normalizing time with respect to column volume. Hence, it is expected that the breakthrough comes at a similar point on your plot. If you plot the breakthrough over time, you can see the effect of different flow rates.