a) If the plant burns low-sulfur coal containing 1% sulfur (S) by weight, and if 100% of the sulfur is converted to SO2, how many tons of SO2 are produced per day?
b) If 90% of the SO2 is captured in a flue-gas desulfurization unit and converted to CaSO4·2H2O how many tons of gypsum are produced per day?
c) If the gypsum leaves the "scrubber" (flue-gas desulfurization unit) in a waste slurry thickened to 8.0% solids (by weight), how many tons of waste slurry are produced per day assuming that the solids are assumed to be pure gypsum?
d) How many tons of CO2 will this plant emit per day if the coal is 90% carbon and none of the CO2 is captured?