How Failing to Recycle Aluminum Harms the Environment
aluhm > 11-26-2021, 07:50 AM
Globally, the aluminum industry annually emits millions of tons of greenhouse gases such as carbon dioxide, which contributes to global warming. Although aluminum cans represent only 1.4% of a ton of garbage by weight, according to the Container Recycling Institute, they account for 14.1% of the greenhouse gas impacts associated with replacing an average ton of garbage with new products made from virgin materials.
Aluminum smelting also produces sulfur oxide and nitrogen oxide, two toxic gases that are key elements in smog and acid rain.
In addition, every ton of new aluminum cans that must be produced to replace cans that were not recycled requires five tons of bauxite ore, which must be strip-mined, crushed, washed and refined into alumina before it is smelted. That process creates about five tons of caustic mud that can contaminate both surface water and groundwater and, in turn, damage the health of people and animals.