User:Michael Corrado/Notebook/Experimental Chemistry Fall 2016/2016/09/23

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Objectives Test 10% Bentonite beads Test 10% Activated Carbon beads Further test film swelling Procedure Testing 10% Bentonite beads: A 50ppm stock solution of Malachite Green was prepared by adding 30mL of DI water to 10mL of the 200ppm Malachite Green solution prepared earlier. The plastic column with the 10% Bentonite beads was suspended on a ring stand and a rubber tube with a clamp wat attached to the bottom. 5mL of the 50ppm Malachite Green stock was then added to the column and allowed to filter through the beads at a flow rate of 13 drops per minute. This filtrate was collected in a labeled disposable scintillation vial and set aside for UV-VIS testing. The above procedure was repeated until the filtrate matched the color of the 50ppm MG solution At this point, 5mL of DI water was eluted through the column until the filtrate matched the color of the water. All samples were set aside for further testing. Testing 10% Activated Carbon beads: The Activated Carbon beads were tested using the same procedure as the 10% Bentonite beads. Testing of the film swelling was performed by Jamie. Observations 10% Bentonite beads: 15 MG rinses, 4 DI water rinses 13 drops per minute 10% Activated Carbon beads 2 MG rinses, 6 DI water rinses 13 drops per minute Clearly, 10% Bentonite beads were a far more effective adsorbent in comparison to the 10% Activated Carbon beads.