1. Sorting Problem

2. Problem Set up
Assume 1000 pounds of waste described in Table 1 are processed as shown in Figure 1.
Using data from Figure 1, calculate the amount of waste recovered by the air classifier, magnet, and screen as well as the amount landfilled.
Complete Table 1.
What is the % Composition of the landfilled waste?

3. Table 1. Sorting Problem Solution

4. Figure 1. Flow of Materials
Plastics 20
Paper 80
Plastics 2
Glass 10
Steel 0
Paper 2
Glass 0
Steel 8
Paper 0
Glass 10
Steel 0
Plastics 2
Paper 100
Shredder
Air
Classifier
Magnet
Screen
Glass 20
Steel 10
Plastics 40

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Last updated July 2004 by Dr. Reinhart