The survey conducted by the Franklin Consortium compared total energy consumption, solid waste, and greenhouse gas emissions per 100,000 ounces of soft drinks in 20-ounce PET bottles, 8-ounce glass bottles, or 12-ounce aluminum cans. According to the survey, the results show that PET bottles emit less greenhouse gases, generated waste, and use less energy throughout their life cycle. A survey commissioned by the PET Resins Association (PETRA) showed that disposable PET bottles have a smaller environmental impact than aluminum cans or glass bottles during their life cycle.
When comparing the energy consumption, emissions, and solid waste of 10,000 equivalent 12-ounce containers, the overall energy consumption is comparable. However, the greenhouse gas emissions of PET bottles are only 2/3 of that of aluminum cans, which is about half of the glass bottle emissions.
When comparing the energy consumption, emissions, and solid waste of 10,000 equivalent 12-ounce containers, the overall energy consumption is comparable. However, the greenhouse gas emissions of PET bottles are only 2/3 of that of aluminum cans, which is about half of the glass bottle emissions.
When comparing a 12-ounce PET bottle with a 12-ounce aluminum can or a 12-ounce glass bottle, the former produces fewer solid waste pounds. However, in terms of volume, aluminum cans produced 16.5 cubic yards of solid waste, 29.9 cubic yards of PET bottles, and 37.3-44.1 cubic meters of glass bottles.
The survey compared 100,000 ounces of soft drinks packed in 20-ounce PET bottles, 8-ounce glass bottles, and 12-ounce aluminum cans. PET bottles emit 59% fewer greenhouse gases than aluminum cans, and fewer bottles than aluminum cans. 77%.
The total energy consumption of PET bottles is 11 million BTU per 100,000 ounce soft drinks, 16 million BTU for aluminum cans, and 26.6 million BTU for glass bottles.
PET bottles produced 302 pounds of solid waste, 767 pounds of aluminum cans, and 4457 pounds of glass bottles. The solid waste volume of PET is 0.67 cubic yards, the aluminum can is 0.95 cubic yards, and the glass bottle is 2.14 cubic yards.
The life cycle analysis of the survey included the entire period from the extraction of raw materials to container manufacturing and post-consumer disposal and regeneration.
Ralph Vasami, PETRA's Executive Director, said: "The survey confirms PET's outstanding environmental profile and its value as a food and beverage packaging. Since 2005, a number of independent life cycle analyses have included PET containers as survey objects. The results consistently show that PET has a smaller impact on the environment than glass, metal or other plastics."
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