What is a common outcome of using flue gas desulfurisation in power plants?

Flue gas desulfurisation (FGD) is a crucial process used in power plants, particularly those that burn fossil fuels, to remove sulfur dioxide (SO₂) from the exhaust gases before they are released into the atmosphere. This method typically involves the use of a limestone slurry, which reacts with sulfur dioxide to produce calcium sulfate, a less harmful compound.

The primary outcome of implementing flue gas desulfurisation is a significant reduction in sulfur dioxide emissions. By capturing and neutralizing SO₂, FGD technologies mitigate acid rain and other environmental impacts associated with sulfur emissions. This addresses important regulatory requirements and contributes positively to air quality and public health.

The other options do not reflect the primary benefit associated with flue gas desulfurisation. While it is possible that implementing FGD can lead to higher operational costs or maintenance requirements, these concerns are secondary to the primary environmental benefit of reduced sulfur dioxide emissions.