Sulfur dioxide emissions from coal-burning power plants are removed by flue-gas
Chapter 5, Problem 5.139(choose chapter or problem)
Sulfur dioxide emissions from coal-burning power plants are removed by flue-gas desulfurization. The flue gas passes through a scrubber, and a slurry of wet calcium carbonate reacts with it to form carbon dioxide and calcium sulfite. The calcium sulfite then reacts with oxygen to form calcium sulfate, which is sold as gypsum. (a) If the sulfur dioxide concentration is 1000 times higher than its mole fraction in clean dry air (2310210), how much calcium sulfate (kg) can be made from scrubbing 4 GL of flue gas (1 GL 5 13109 L)? A state-of-the-art scrubber removes at least 95% of the sulfur dioxide. (b) If the mole fraction of oxygen in air is 0.209, what volume (L) of air at 1.00 atm and 258C is needed to react with all the calcium sulfite?
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