...
Data was recorded for Sand 30 with each of the parameters specified in Procedure. The results of the experiment can be downloaded here in the form of the Excel sheet. The content of the gas removed during all runs stays consistent. However, it is still a bit lower than the result from the Fluidized Bed Experiment done last semester, when the measured content of gas removed was 3.23 mL/L. The fluidized bed experiment involved the same sand parameters: Sand 40, depth = 60cm, bed expansion = 50%, aerator air pressure = 100kPa, except for the flow rate, which was 345 mL/min. The possible cause of the difference in results might be the experimental setup, which was modified since the last semester. It is possible that the aerator might not be producing water that is supersaturated enough.