Experiments 1 and 2 - Replicates of the Previous Fluidized Bed Experiments

Parameters:

For both Experiment 1 and Experiment 2, the [general procedure] had been followed using specific parameters. The parameters used in each experiment are listed and compared below:

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Table 1: Comparison of Parameters Used.

Parameters:	Experiment 1	Experiment 2
Sand Grain Type	Sand 40	Sand 30
Sand Grain Diameter	0.42 mm - 0.59 mm	0.59 mm - 0.84 mm
Sand Bed Depth	60 cm	60 cm
Sand Bed Expansion	50%	50%
Aerator Air Pressure	100 kPa	100 kPa
Flow Rate	225 mL/min	485 mL/min

Results and Discussion:

Data from both experiments were analyzed using the method outlined below:
For each sand grain size, the experiment was run for a certain amount of time, throughout which it completed several data collection periods. Each data collection period ("run") represents a time period during which the water level in bubble collector gradually falls down from its maximum to the set minimum point. In Figure 1. and Figure 2. this period is represented on the graph when the line slants downward. Once the minimum water level is reached, the bubble collector has to refill with water in order to continue the runs. For this reason, the water outflow valve is closed until the water level reaches the set maximum point. This period is represented on the graph by the vertical lines. More detailed information on the bubble collector setup can be found here.

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Experiments 1 and 2 - Replicates of the Previous Fluidized Bed Experiments

Experiments 1 and 2 - Replicates of the Previous Fluidized Bed Experiments

Parameters:

Table 1: Comparison of Parameters Used.

Results and Discussion: