Recent, widespread additions of scrubbers and selective catalytic reduction (SCR) systems at U.S. coal-fired power plants have significantly reduced concentrations of the pollutants SO 2 and NO x in ...

Using a selective catalytic reduction (SCR) system to reduce the emissions of nitrogen oxides (NO x) from a coal-fired power plant is rapidly becoming the norm, rather than the exception. But for many ...

Sulphur dioxide and sulphur trioxide are potentially fatal gases. What effects do they have on people, and what should be done if exposure has occurred? Sulphur dioxide is a colourless gas with a ...

Panic spread in Nagda on Wednesday evening when sulphur trioxide (SO3) gas leaked from a tank at an industrial plant, causing irritation in the eyes, throat and lungs of people in a 1. 5km radius.