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After analyzing the results the team now considers that by increasing up-flow velocity the amount of lime in the reactor can decrease and the performance will get worse. Therefore, the team is now considering the effects of lime particle size. Because the slurry and mixing method is not exact and reproducible, it is possible that all the experiments have been done with different particle size distributions. Big particles remain trapped in the middle part of the elbow and it is difficult to clean the reactors after each experiment. For future experiments a blender or a coffee grinder will be required in order to ensure a homogeneous distribution of particles size. In addition, the team asked for new pH probes and signal conditioning boxes.
Figure 1 - Experiment 5
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