👉 Sulfur dioxide (SO2) is a toxic gas that can be produced during the combustion of fossil fuels, particularly coal. The process of sulfurization involves the release of sulfur dioxide from these sources into the atmosphere. This action causes acid rain, which can harm aquatic life and contribute to climate change. Desulfovic acid (DFA), also known as SO2 desulfurization, is a chemical reaction that converts sulfur dioxide in the air into less toxic products such as water vapor