Atmospheric Pollutants
1.Gases in The Air
Sources of Sulfur Dioxide
There a diverse range of natural sources of sulfur dioxide in the atmosphere such as from volcanic gases: S(s) + O2(g) ( SO2 (g), geysers and combustion of organic matter in bushfires. Also, anaerobic bacteria in poor aerated soil oxidize H2S to SO2: . Emissions of sulfur dioxide have accelerated since the Industrial revolution. Industrial emissions of sulfur dioxide have accelerated since the Industrial revolution. Industrially sulfur is produced by the combustion of brown coal, containing impurities like FeS2, in power stations: . In smelting plats metals like copper and zinc are extracted from sulfide ores. E.g. when extracting copper from chalcopyrite (CuFeS2): and extracting zinc: , sulfur dioxide is released. Also in the Contact Process, where sulfuric acid is prepared from sulfur: S(s) + O2(g) ( SO2 (g), sulfur dioxide is released. Furthermore, the incineration of garbage, petroleum refineries, food......
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