Students determine solvent concentration, solvent volume and elution speed to optimize the separation of the red and blue dyes. Back to top list. The Recycled Paper Industry is a study unit designed for 11th and 12th grade students in a Chemistry for the Technologies class. This class is a part of the Tech Prep curriculum in which students look at chemistry application in the workplace. A real issue in the recycled paper industry today is de-inking office white paper.
Students first investigate traditional inks and the established processes for de-inking newsprint.
Since these possibilities include using volatile organic solvents, the student also must look at the economic and environmental impacts of their potential solutions to the problem. Back to top list. 1995-1997 Page maintained by Steve Gentle, Research Associate.