...
The procedure adopted for this experiment was the same as all the previous trials. 100g of lime was made into a slurry and poured into the lime feeder from the top of the column. The flow rate was regulated at 40mL/min by the peristaltic pump while the pH was recorded using a pH probe. Water supplies were made available from the cleaned distilled water tank.
A more detailed explanation of the procedure can be obtained in the Materials and Methods section.
Results
The results of this trial can be seen in the figure below as per which the system lasted at a stable pH of 12 for about 8 hours.
Figure 1. pH vs Time (h)
...