The amount of pollution a single aluminum plant makes ultimately depends on the size and capacity of the plant.
Some of the pollutants released by an aluminum smelter include alumina dust, sulfur dioxide, carbon particles, polynuclear aromatic hydrocarbons (PAH’s), CO2, SO2, and gaseous fluoride. The emissions for uncontrolled gases per ton of aluminum produced can range any where from 20-80 kg.
Additionally, smelters create 40-60 kgs of solid waste for every ton of aluminum produced. Most of the solid waste consists of spent cathodes which contain huge amounts of harmful metals and compounds.
Unfortunately, no global statistics exist that measure the annual amount of pollution caused by the aluminum industry.
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