9. A new 600 MW power plant (0.35 efficiency) uses an Illinois Basin coal. Assum

Question

9. A new 600 MW power plant (0.35 efficiency) uses an Illinois Basin coal. Assume the FGD system removes enough sulfur so that the plant meets NSPS. Determine the volume of rainwater of pH = 5 resulting from one day of sulfur emissions. Assume all the sulfur that is emitted forms sulfuric acid, and that 65% of this acid is deposited as acid rain.

Explanation / Answer

I think some data is missing ; anyways i will explain how to proceed in this problem ; Firstly calculation of Coal Required to produce = 600/0.35 MW = `1714.285 MW ; we will get amount of coal used in gms we require % S in coal which will give us amount of S burnt to form SO2 ; get moles of SO2 = mass of SO2/64 ; pH = 5 means [H+] = 10^-5 ; H2SO4 ------> [H+] +[HSO4]- ; so conc of [H2SO4 ] = [H+] = 10^-5 H2O + O2 + SO2 ----> H2SO4 Let Volume be V ; so moles of H2SO4 = 10^-5* V/0.65 moles of SO2 = 10^-5*V/0.65 ; Equate the two equations of moles of SO2 obtained to get V ;

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