What is a method to reduce sulfur dioxide emissions?

Flue gas desulfurization is a key technology used to reduce sulfur dioxide (SO₂) emissions from power plants and industrial facilities. This process involves the removal of sulfur from the combustion gases produced when fossil fuels, especially coal, are burned.

In flue gas desulfurization, the gases are passed through a scrubber, where they interact with a sorbent, typically limestone or another alkaline substance. This chemical reaction produces a solid byproduct, often gypsum, and effectively removes a significant portion of the sulfur dioxide from the emissions before they are released into the atmosphere. This technology is essential for complying with environmental regulations and minimizing air pollution, contributing to improved air quality and public health.

In comparison, the other methods mentioned would either increase emissions or detract from the necessary measures required to control them, making flue gas desulfurization a vital approach for reducing sulfur dioxide pollution.