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Fuel-Tech - Model Redox-Hg -Amorphous Iron Sulfide System
FromFuel Tech, Inc.
Redox-Hg is a suspension of highly amorphous iron sulfide particles used to enhance the total mercury removal capabilities of wet FGD scrubber systems. Through a combination of adsorption, chemical reduction, precipitation, and conversion to stable sulfide and iron-sulfide precipitates, Redox-Hg removes oxidized and elemental mercury from liquid and gaseous streams.
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mercury removal
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Cost-effective Alternative to Wet Scrubber Additives (WSA)
Redox-Hg enhances the mercury removal capabilities of wet FGDs and is employed as the mercury control chemical of choice at plants generating over 9,000MW of power.
Program Benefits
- Lowers total stack mercury by over 95%
- Does not effect quality of fly ash or gypsum
- Effective over a wide range of ORP (-200 to +700 mV) and pH (pH 4.5-7)
- Fast-acting response during startup, ORP and SCR excursions
- Works within existing scrubber conditions with a small footprint
- Reduces arsenic and selenium in water
- Eliminates the potential of leachable heavy metals in solids
- Non Toxic, easy to handle, low odor