Typical data about beverage packaging are given in Table 17.7. 

Table 17.7:

Answer the following questions based on these data. 

1. Calculate the eco-efficiency of beverage packaging using the data the this table. 

2. Using the carbon footprint information for the three types of packaging materials, calculate the eco-efficiency over the life cycle. 

3. Compare the change in the carbon footprint for all packaging per unit of beverage sold with the carbon footprint for the entire quantity of beverage sold. Use these results to discuss the pros and cons of eco-efficiency.

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Table 17.7 Typical data for beverage packaging. Packaging mass (million pounds) Year Packaging type PET Aluminum Glass PET 1990 1995 2000 2005 Aluminum Glass PET Aluminum Glass PET Aluminum Glass 800 2000 4000 1200 2000 1000 1700 1900 400 1800 1850 300 Packaging recycled (million pounds) 250 1000 1400 550 1000 350 600 1000 100 500 1 90 Volume of beverage (billion gallons) 3 5 1 5 5.5 0.2 6 0.1 1 5.5 6 0.06