Abstract
The elemental mercury (Hg0) capture of potassium permanganate (KMnO4)-modified calcium-based with rice husk ash sorbent (CaO/RHA) was first tested to evaluate the effectiveness of Hg0 adsorption. The KMnO4 modified CaO/RHA performances were compared with that of modified Ca-based with fly ash sorbent (CaO/FA). The effects of supports, pore size distribution, oxidants loading, temperature, and gas mixture were also investigated to understand the mechanism in capturing Hg0. The CaO/RHA/KMnO4 sorbent could remove over 90% of Hg0 under the simulated flue gas.
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