The purpose of this experiment and design is to create a minute filter that will trap bacteria in contaminated water flow. The actual testing of the filter will be the different variables that are present in the spinning of the fibers that compose the filter. The two variables that were tested was the distance between the syringe to the collecting plate and the angle between the syringe and the collecting plate. The results below show the outcomes and final conclusions.
Because the smallest common bacteria found in contaminated water flow is Fecal Coliform, the diameter of the fibers must be less than the length and therefore the volume of the bacteria. The length of this bacterium is 600 to 700 nm. When testing the distance variable, the smallest diameter of the fiber with a low standard deviation was spun at 12 cm. The average diameter of 30 fibers measured at 12 cm was 49.52 nm with a standard deviation of 14.39 nm. Another observation noted that was seen through the SEM images at 12 cm was the decreased number of beads that formed. All of the other distances had an abnormal number of beads in comparison to the aforementioned distance. The second variable involved the angle between the syringe and the collecting plate. The smallest diameter of the fiber was found at 20° and a standard deviation. The diameter was 52.71 nm while the standard deviation was 13.30 nm. Therefore, 20° will be
the chosen angle for the final spin.
Final Conclusion:
In order to spin the smallest size diameter, the results show that the solution being spun should be spun at 12 cm from the collecting plate and at an angle of 20°. In order to create viable fibers to create a filter, another solution must be made and follow the specified variables above.
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