| abstract |
In a method for controlling air pollution, the combustion gas passes through a slurry of alkaline earth metal sulfide and redox buffer (eg, phosphate) and is combined with an alkaline earth carbonate and / or hydroxide. Is preferred. Compositions for removing heavy metals from combustion gases are also provided as aerosolized aqueous dispersions of alkaline earth metal sulfides, or slurries and buffers. A solid residue of an air pollution control process is also described. |