The desulfurization of coal is an important step in power plants, wherein sulfur content gets reduced before combustion reducing pollution effectively. For example, it helps to cut back the amount of sulfur dioxide emissions as this gas--a major pollutant responsible for acid rain and ill health issues like asthma attacks--exports directly into Earth's lower atmosphere where people breathe. The technology of coal desulphurization involves different methods, such as wet flue gas desulphurisation, dry sorbent injection, and circulating fluidized bed technologies. These systems work by trapping sulfur dioxide in slurry form or converting it to a solid waste product that can be disposed of safely. Applications for desulphurization technologies are many and varied, from large-scale power plants to industrial boilers where coal is used as the fuel. Integrated with these technologies, industrial enterprises can satisfy rigorous environmental standards and lower their carbon footprint.