The effectiveness of various filter media on water pH levels was evaluated through multiple trials, showcasing the differences in performance. The initial pH of the dirty water was consistently measured at 6.2; however, following filtration, the average pH readings varied by media type: cotton balls yielded an average of 6.48, coffee filters reached 6.54, charcoal produced 6.46, sand significantly elevated the pH to 7.08, and marbles achieved the highest average at 6.74. Visual assessments were conducted at three key time intervals to analyze the clarity of filtered water. In Photo 1, taken after 15 minutes, the cotton balls' effectiveness was evident as they absorbed water but left it brown, contrasting starkly with the crystal-clear outcome from the marble filter. After 30 minutes, Photo 2 highlighted the brown tint of water filtered through charcoal, demonstrating its lesser clarity despite its volume. Finally, Photo 3, taken after 2 hours, illustrated the superior filtration capabilities of marbles, showcasing their proficiency in removing dirt and contaminants, resulting in noticeably clearer water.
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Filter Media
Dirty Water pH
pH after Filtration [Trial 1]
pH after Filtration [Trial 2]
pH after Filtration [Trial 3]
pH after Filtration [Trial 4]
pH after Filtration [Trial 5]
Avg.
Cotton Balls
6.2
6.4
6.5
6.4
6.5
6.6
6.48
Coffee Filter
6.2
6.5
6.6
6.4
6.6
6.6
6.54
Charcoal
6.2
6.4
6.5
6.4
6.5
6.5
6.46
Sand
6.2
7.0
7.1
7.1
7.0
7.2
7.08
Marble
6.2
6.7
6.7
6.8
6.7
6.8
6.74
(BUT IN GRAPH FORM)
PHOTOS 1: This photo depicts the color and visual appearance of the filtered water after 15 minutes. This picture shows how quickly the cotton balls soaked up the water making it turn brown, it also shows how crystal clear the filtered water is in the custom filter filled with marbles compared to others.
PHOTO 2: This is the visual representation of the filtered water after 30 minutes has passed. This visual representation shows how brown the filtered water is in the custom filter filled with charcoal, it also shows a much larger amount of filtered water letting us compare visually.
PHOTO 3: This image describes the color and visual characteristics of the filtered water after 2 hours. It clearly shows how the filtration media marbles are more effective for removing dirt and chemicals in contaminated water.
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