After the Clean Air Mercury Rule: Prospects for Reducing Mercury Emissions from Coal-Fired Power Plants

Milford, Jana B.; Pienciak, Alison

doi:10.1021/es802649u

Cited by 45 publications

(42 citation statements)

References 6 publications

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“…In 2005, targeting Hg emissions from coal-fired power plants, the U.S. Environmental Protection Agency (EPA) issued the Clean Air Mercury Rule (CAMR), which established performance standards limiting Hg emissions from new and existing facilities (Milford and Pienciak 2009). The rule created a market-based cap-and-trade program to decrease nationwide power plant Hg emissions.…”

Section: Us Hg Emissions and Regulationmentioning

confidence: 99%

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MercNet: a national monitoring network to assess responses to changing mercury emissions in the United States

Schmeltz¹,

Evers

Driscoll

et al. 2011

Ecotoxicology

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A partnership of federal and state agencies, tribes, industry, and scientists from academic research and environmental organizations is establishing a national, policy-relevant mercury monitoring network, called MercNet, to address key questions concerning changes in anthropogenic mercury emissions and deposition, associated linkages to ecosystem effects, and recovery from mercury contamination. This network would quantify mercury in the atmosphere, land, water, and biota in terrestrial, freshwater, and coastal ecosystems to provide a national scientific capability for evaluating the benefits and effectiveness of emission controls. Program development began with two workshops, convened to establish network goals, to select key indicators for monitoring, to propose a geographic network of monitoring sites, and to design a monitoring plan. MercNet relies strongly on multi-institutional partnerships to secure the capabilities and comprehensive data that are needed to develop, calibrate, and refine predictive mercury models and to guide effective management. Ongoing collaborative efforts include the: (1) development of regional multi-media databases on mercury in the Laurentian Great Lakes, northeastern United States, and eastern Canada; (2) syntheses and reporting of these data for the scientific and policy communities; and (3) evaluation of potential monitoring sites. The MercNet approach could be applied to the development of other monitoring programs, such as emerging efforts to monitor and assess global mercury emission controls.

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Section: Us Hg Emissions and Regulationmentioning

confidence: 99%

“…Circuit judicially voided (vacated) CAMR (Milford and Pienciak 2009). Following the court's vacatur, 17 states adopted regulations controlling Hg emissions from power plants, most of which have been implemented (U.S. EPA 2011).…”

Section: Us Hg Emissions and Regulationmentioning

confidence: 99%

MercNet: a national monitoring network to assess responses to changing mercury emissions in the United States

Schmeltz¹,

Evers

Driscoll

et al. 2011

Ecotoxicology

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“…32,33 The separation of sorbent from the fly ash may be more easily achieved by the magnetic property of the sorbent. A magnetic sorbent MagZ-Ag 0 was once used to capture elemental mercury from flue gas, 31,34 but the sorbent was expensive.…”

Section: Introductionmentioning

confidence: 99%

Nanosized Cation-Deficient Fe−Ti Spinel: A Novel Magnetic Sorbent for Elemental Mercury Capture from Flue Gas

Yang

Guo

Yan

et al. 2011

ACS Appl. Mater. Interfaces

140

133

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“…CAIR remains in place until the US EPA issues new guidelines [9]. Some utilities are proceeding with planned construction of FGD units, while others will wait for clarification of the regulations [10]. …”

Section: Introductionmentioning

confidence: 99%

Mercury capture by native fly ash carbons in coal-fired power plants

Hower

Senior

Suuberg

et al. 2010

Progress in Energy and Combustion Science

250

112

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The control of mercury in the air emissions from coal-fired power plants is an on-going challenge. The native unburned carbons in fly ash can capture varying amounts of Hg depending upon the temperature and composition of the flue gas at the air pollution control device, with Hg capture increasing with a decrease in temperature; the amount of carbon in the fly ash, with Hg capture increasing with an increase in carbon; and the form of the carbon and the consequent surface area of the carbon, with Hg capture increasing with an increase in surface area. The latter is influenced by the rank of the feed coal, with carbons derived from the combustion of low-rank coals having a greater surface area than carbons from bituminous- and anthracite-rank coals. The chemistry of the feed coal and the resulting composition of the flue gas enhances Hg capture by fly ash carbons. This is particularly evident in the correlation of feed coal Cl content to Hg oxidation to HgCl2, enhancing Hg capture. Acid gases, including HCl and H2SO4 and the combination of HCl and NO2, in the flue gas can enhance the oxidation of Hg. In this presentation, we discuss the transport of Hg through the boiler and pollution control systems, the mechanisms of Hg oxidation, and the parameters controlling Hg capture by coal-derived fly ash carbons.

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After the Clean Air Mercury Rule: Prospects for Reducing Mercury Emissions from Coal-Fired Power Plants

Cited by 45 publications

References 6 publications

MercNet: a national monitoring network to assess responses to changing mercury emissions in the United States

MercNet: a national monitoring network to assess responses to changing mercury emissions in the United States

Nanosized Cation-Deficient Fe−Ti Spinel: A Novel Magnetic Sorbent for Elemental Mercury Capture from Flue Gas

Mercury capture by native fly ash carbons in coal-fired power plants

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