Hg (Mercury)

Mercury is a toxic, persistent pollutant that accumulates in the food chain. While fossil fuel-fired power plants are the largest remaining source of human-generated mercury emissions in the United States, they contribute only a small amount (about 1%) of total annual mercury emissions worldwide.

The SOLVAir Approach

When used as a dry sorbent injected into a baghouse or exhaust duct, SOLVAir Select 200 trona quickly reacts with SO₃ which competes with Hg for active sites on the surface of active carbon and fly ash particles. Furthermore, after the thermal decomposition, the sorbent becomes porous and has high specific surface area (~ 10 m²/g) which enables some adsorption of mercury as well.

Therefore, Select 200 is able to remove 20-70% mercury when used alone, and up to 97% when used in combination with activated carbon. Similar results were obtained with sodium bicarbonate in Europe.

Regulatory

Go to www.epa.gov for the most up-to-date regulatory information.

Still have questions?  Click here to go to our Resource Material page.

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SO₂  |  SO₃  |  HCl  |  Particulates