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Newslink II:
Pecan Filter

Why Am I Blue?

DIRECTIONS: DIRECTIONS: Blue dye removed from jeans during the stone washing process has to be removed from the rinse water before this water can be reused or released into the environment. Your challenge is to devise and carry out a plan to remove the coloring agent. Use any safe process. Your teacher will provide a blue-colored solution and a variety of materials to complete the task. You may have to try a few plans to succeed at removing the blue color and saving the water.

PROBLEM: Removing the blue dye from the water and recovering the water

OUR PLAN:


Materials:


Procedure:




Observations:





DISCUSSION:

  1. Which procedures removed the blue color from the water successfully?
  2. Compare your successful procedures with the ones used currently by International Garment and those which the company proposes to use.
  3. Why would distillation not be a solution for International Garment to remove the blue dye from the wash water?

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