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

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Objectives

  1. Test 10% Bentonite beads
  2. Test 10% Activated Carbon beads
  3. Further test film swelling

Procedure

  1. 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.
  2. Testing 10% Activated Carbon beads:
    • The Activated Carbon beads were tested using the same procedure as the 10% Bentonite beads.
  3. Testing of the film swelling was performed by Jamie.

Observations

  1. 10% Bentonite beads:
    • 15 MG rinses, 4 DI water rinses
    • 13 drops per minute
  2. 10% Activated Carbon beads
    • 2 MG rinses, 6 DI water rinses
    • 13 drops per minute
  3. Clearly, 10% Bentonite beads were a far more effective adsorbent in comparison to the 10% Activated Carbon beads.