On March 15, 2005, EPA issued the Clean Air Mercury Rule, requiring phased-in reductions of mercury emissions from electric power generators. ADA-ES, with support from DOE/NETL and industry partners, is conducting full-scale evaluations to determine the capabilities of activated carbon injection, coal blending, and coal additives for mercury control on different coals and air pollution equipment configurations. This paper will present results from four sites: Sunflower Electric's Holcomb Station, AmerenUE's Meramec Station, Basin Electric Power Cooperative's Laramie River Station, and DTE Energy's Monroe Power Plant. Holcomb fires a PRB coal and has a spray dryer absorber (SDA) and fabric filter for SO{sub}2 and particulate control. Meramec fires a PRB coal and has a cold-side ESP for particulate control. Laramie River fires a PRB coal and is equipped with an SDA and electrostatic precipitator (ESP). Monroe fires a blend of bituminous and PRB coals and has a selective catalytic reduction process (SCR) for NO{sub}x control and an ESP for particulate capture. Mercury control options tested at these sites included coal blending, coal additives, and treated and untreated activated carbons. The effect of SCR on mercury speciation and mercury removal was also evaluated.
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