Profiles in Garbage: Aluminum Packaging

Aluminum packaging has never had more than 1 percent market share of generated MSW.

Bauxite ore is refined into alumina (aluminum oxide), one of the primary feedstocks for aluminum metal. Scrap aluminum represents 33.7 percent of America’s aluminum supply. Recycled aluminum cans supply one tenth of the scrap used as a raw material.

About 22 percent of the aluminum used in America goes into packaging. This is the second largest application for aluminum after transportation products, which use 28 percent. Aluminum is the second most-used material in new automobiles worldwide.

Aluminum packaging is produced in both rigid and foil forms. Rigid aluminum containers are used for beverage and food packaging.

Aluminum cans account for all of the beverage can market, but only a small percentage of the food can market. Cans comprise 78 percent of aluminum packaging by weight.

Foil packaging is used as a wrapping material; as semi-rigid packages, such as pie plates and frozen food trays; and as flexible packaging, such as cigarette foil and candy wrappers.

Aluminum packaging has never had more than 1 percent market share of generated MSW.

Chaz Miller is state programs director for the National Solid Wastes Management Association, Washington. E-mail him at: [email protected].

 

Aluminum Packaging MSW Facts*

Generated:

  • 1.84 million tons, or 0.8% of municipal solid waste (MSW) by weight.
  • 1.43 million tons of cans and 410,000 tons of foil.
  • 11.99 pounds (lbs.) per person per year.
  • 9.32 lbs. of cans and 2.67 lbs. of foil per person per year.
  • 96.7 billion cans, or 315 cans per person per year.
  • An aluminum can weighs 0.466 ounces.

Recycled:

  • 730,000 tons or a 39.7% recycling rate.
  • 690,000 tons or 50.7% for cans.
  • 40,000 tons or 9.7% for foil (2008 data).
  • 55.5 billion cans, or a 57.4% can recycling rate in 2009 (industry data).

Recycled Content:

  • 68% for cans in 2008 (industry data).

Incinerated or Landfilled:

  • 1.15 million tons or 0.7% of discarded MSW by weight.
  • 740,000 tons of cans and 410,000 tons of foil.
  • Aluminum is non-combustible and can create residue in incinerator ash.

Landfill Volume:

  • 6.5 million cubic yards or 1.6% of 1997 landfilled MSW.
  • 5.3 million cubic yards of cans and 1.2 million cubic yards of foil in 1997 landfilled MSW.

Density:

  • Landfilled cans weigh 250 lbs. per cubic yard (lbs/cu.yd.).
  • Landfilled foil weighs 550 lbs/cu.yd.
  • Loose cans have a density of 50-74 lbs/cu.yd.
  • Flattened cans have a density of 250 lbs/cu.yd.

Source Reduction:

  • In 1972, 21.75 cans weighed 1 lb.
  • In 2008, 34.73 cans weighed 1 lb.

Recycling Markets:

  • Aluminum can sheet manufacturers are the primary market for used aluminum cans.
  • Foil is usually bought by the same markets.

End Market Specifications:

  • ISRI Guidelines for Nonferrous Scrap: NF-2009 include “post-consumer aluminum can scrap,” and “shredded,” “densified,” “baled,” and “briquetted” aluminum used beverage can scrap.
  • Contaminants are dirt, moisture, plastic, glass, and other metals. Lead is a particular problem.
  • “Post-consumer aluminum foil” guidelines call for clean, dry foil.
  •  Foil and cans use different alloys and will contaminate each other in the recycling process.

Sources:

Aluminum Association, http://www.aluminum.org

"Measurement Standards and Reporting Guidelines," National Recycling Coalition, Washington, DC http://www.nrc-recycle.org

"Municipal Solid Waste in the United States: 2009 Facts and Figures," U.S. EPA, Office of Solid Waste, www.epa.gov/osw

"Municipal Solid Waste Generation, Recycling and Disposal in the United States: Facts and Figures for 1998," U.S. EPA, Office of Solid Waste, 2000 http://www.epa.gov/osw

Scrap Specifications Circular 2011, Institute of Scrap Recycling Industries, Washington, DC http://www.isri.org

*Data is from 2009 EPA estimates, except where noted.

 

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