Preventing Smog with Green Chemistry

The evolution of automotive pollution control devices to reduce smog provides an example of how green chemistry can be used to reduce pollution. The first measures taken to reduce hydrocarbon and nitrogen oxide emissions from automobiles were very much command-and-control 

Green chemistry can be applied to devices and processes other than automobiles to reduce smogforming emissions. This is especially true in the area of organic solvents used for parts cleaning and other industrial operations, vapors of which are often released into the atmosphere. The substitution of water with proper additives or even the use of supercritical carbon dioxide fluid can eliminate such emissions. 

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