Please can someone suggest a method of removing sulfer dioxide from gases going up a power station chimney. Thank You.

Most coal fired power plants remove a large percentage of the SO₂ from the burning coal gases by the use of devices called wet or dry "scrubbers". A lime type chemical is mixed with water and sprayed or deposited into the gas flues. The chemical reacts with the sulfur to form a pasty or powdery compound that is collected and disposed of such that the gas that goes up the chimneys is mostly (90%) sulfur free. Some utilities use a low sulfur coal (under 2% sulfur content)that further reduces the sulfur dioxide emissions after the scrubbing process.

Other utilities may use electrostatic 'precipitators' that electromagnetically trap the SO₂ emissions (forming a powder that is later disposed of or recycled) before the gases go up the chimney.