Processes that uses an amonia based solutions to capture SOx, NOx,CO2, Hg and particulates from power plant flue gas have or will be demonstrated at FirstEnergy's R.E. Burger Plant in Shadyside, Ohio. The ECO technology produces a commercially salable, ammonium sulfate nitrate fertilizer co-product, reducing operating costs and avoiding landfill disposal of waste. The CO2 is to be recovered and prepared for sequestration in another process. After regeneration the ammonia solution from the CO2 capture will be recycled.