Once you have completed the filtration, you can assess the filtration efficiency of each filter by looking at the color change of your samples. In this experiment you will filter three water samples with different "contaminant" (food color) concentrations using three different filtration conditions (granular activated carbon filter, powdered activated carbon filter and no carbon filter). Optional: Computer with access to the internet, and permission to use it.A digital scale that would be suitable is the Fast Weigh MS-500-BLK Digital Pocket Scale available from. Scale that can measure in 0.1 g increments.Coffee filters (bleached or unbleached), size 4 for 20 oz cups (108, 36 per trial) available from.Food color (green, blue or red work well) available from.Plastic cups (no lids necessary), transparent 20 oz (90, 30 per trial) available from.Powdered activated charcoal available from.Granulated activated charcoal available from.National Center for Education Statistics, (n.d.).Retrieved January 17, 2017.įor help creating graphs, try this website: Water Treatment Notes, Cornell Cooperative Extension, College of Human Ecology. Activated Carbon Treatment of Drinking Water. How are adsorbents used for environmental cleanup?. Activated-Carbon Filtering Pitcher Significantly Reduces Chemicals in Tap Water. Can you think of other processes or reactions in which the particle size or surface area to volume ratio matters?.How do carbon filters clean contaminated drinking water?.Why does the form of activated carbon and its particle size matter for filtration?.
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