Removal of contaminants and recovery of by-products from hot was
Removal of noxious contaminants from gas
Removal of oxides of sulfur from gases
Removal of SO.sub.2 from gases
Removal of SO.sub.2 from SO.sub.2 -containing gases
Removal of sulfur and nitrogen containing pollutants from discha
Removal of sulfur and nitrogen oxides from flue gases
Removal of sulfur compounds from gaseous waste streams
Removal of sulfur dioxide from exhaust gas
Removal of sulfur dioxide from gas
Removal of sulfur dioxide from gas streams
Removal of sulfur dioxide from gas streams
Removal of sulfur dioxide from stack gases with phosphate slimes
Removal of sulfur dioxide from waste gases
Removal of sulfur from petroleum coke with lime
Removal of sulfur from waste gas streams
Removal of sulfur oxides and particulate matter from waste gas s
Removal of sulfur oxides and particulates with copper-containing
Removal of sulfur oxides from fluid streams
Removal of sulfur oxides from gas streams with ammonium sulfite