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Data from the experiment indicate that after each of the data collection period the bubble collector captured the equivalent amount of gas from the system. Overall, the results were stayed consistent. After each period the content air removed floated within the range of 1.981 mL/L - 2.002 mL/L. This might suggest that the components of the system function reliably.
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We added fitted a line to each of the runs to see the rate of change of the water level inside the bubble collector when water runs through the sand filter. The value of the linear fit is very close to 1, indicating that the data can be modeled accurately using a linear relationship. Figure 2. and Figure 3. show the linear fit line for the second data collection period, and more detailed graphs can also can be found here.
The calculations for the amount of gas removed during each data collection periods gave us the results summarized in Table 1. and Figure 4.:
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 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.