Industries like glass melting furnace has the ability to create hydrogen fluoride emission into the air through the clay that sometimes contain certain fluorides. Thus if a type of clay which has minimum amount of fluoride components in it is chosen as a raw material, the hydrogen fluoride emission process will be controlled. There are also examples where in order to maintain the efficiency of electrostatic precipitators at high levels, the electrical resistance of dust particles was regulated to a desired level. Also different coal types are mixed in order to bring down the amount of sulfur present within them. This kind of management of raw materials can be implemented to bring down the overall impurity that harms the atmosphere (“Air Pollution Control”, 1997).
Gas contains a lot of diverse pollutants, including volatile organic compounds (VOC) that is organic compounds that readily evaporate, and various other gaseous air toxics, many of which can cause serious health damages like adverse effects on brain tissue and even generic mutations or cancer. These are generally controlled by the implementation of three techniques, namely, absorption, adsorption and incineration or combustion. These techniques, productive against greenhouse gases as well, can be used in combination or singularly as well. Absorption is defined as a procedure in wave motion, in which energy can be transferred from wave to matter that is travelling through the wave. Adsorption is an ability solid particles have to attract molecules of gases in contact with their surfaces. Incineration is referred to the process of converting gaseous elements like VOC’s and other harmful gaseous hydrocarbons to water and carbon dioxide chemically through rapid oxidation. There is also a fourth procedure in development, in addition to these three, as a process to regulate the degree of carbon dioxide, termed carbon sequestration. This is a long-term storage of carbon particles in the ocean, plants, soil and in geological formations, typically referring storage of such kind of carbons that have capabilities to convert to carbon dioxide gas with immediate effect. This procedure can be carried out through anthropogenic manner that is human activities, and can happen naturally as well. Certain aspects of climate change, like increment of carbon dioxide in the atmosphere has had been a concern for long, and implementation of this procedure, through geoengineering techniques and modified use of land, will ensure that the presence of the gas in the air will be decreased to the desired percent. The geoengineering techniques commonly in use for this purpose include carbon capture and storage (Nathanson, 2014).