Status review of mercury control options for coal-fired power plants

Pavlish, John H.; Sondreal, E.A.; Mann, Michael D.; Olson, Edwin S.; Galbreath, Kevin C.; Laudal, D.L.; Benson, Steven A.

doi:10.1016/s0378-3820(03)00059-6

Cited by 836 publications

(678 citation statements)

References 53 publications

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“…가스상 수은 연 속측정시스템에 사용되는 가장 보편적인 수은 검출기는 CVAAs (cold-vapor atomic absorption spectroscopy)와 CVAFs (cold-vapor atomic fluorescence absorption spectroscopy) 이다 [12][13][14][15][16]. 그 러나 CVAAs 나 CVAFs 검출기는 단지 원소수은(Hg [10,11].…”

Section: 서 론unclassified

Catalytic Reduction of Oxidized Mercury to Elemental Form by Transition Metals for Hg CEMS

Ham¹

2014

Clean Technology

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: This study was aimed to develop catalytic system for the dry-based reduction of oxidized mercury (Hg 2+ ) to elemental mercury (Hg 0 ) which is one of the most important components comprising mercury continuous emission monitoring system (Hg-CEMS). Based on the standard potential in oxidation-reduction reaction, transition metals including Fe, Cu, Ni and Co were selected as possible candidates for catalyst proceeding spontaneous reduction of Hg 2+ into Hg 0 . These transition metal catalysts revealed high activity for reduction of Hg 2+ into Hg 0 in the absence of oxygen in reactant gases. However, their activities were greatly decreased in the presence of oxygen, which was attributed to the transformation of transition metals by oxygen to the corresponding transition metal oxides with less catalytic activity for the reduction of oxidized mercury. Hydrogen supplied to the reactant gases significantly enhanced Hg 2+ reduction activity even in the presence of oxygen. It might be due to occurrence of combustion reaction between H2 and O2 causing the consumption of O2 at such high reaction temperature at which oxidized mercury reduction reaction took place. Because the system showed high activity for Hg 2+ reduction to Hg 0 , which was compatible to that of wet-chemistry technology using SnCl2 solution, the catalytic reduction system of Fe catalyst with the supply of H2 could be employed as a commercial system for the reduction of oxidized mercury to elemental mercury.

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Section: 서 론unclassified

Catalytic Reduction of Oxidized Mercury to Elemental Form by Transition Metals for Hg CEMS

Ham¹

2014

Clean Technology

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“…Because mercury and its compounds are volatile, up to 90% of the mercury in fluorescent lamps may be released directly into the air upon incineration in the absence of mercury emission controls (USEPA, 1998). The amount of mercury released into the air could be significantly reduced by flue gas cleaning, although elemental mercury is much more difficult to capture than oxidized and particulate mercury (Carpi, 1997;Pavlish et al, 2003). Advanced MSW incinerators equipped with dry/semi-dry scrubbing, activated carbon injection and fabric bag filter systems in China could remove 60-100% of the mercury from the flue gas (Wu, 2009;Zhang et al, 2008).…”

Section: Mercury Emissions From Fluorescent Lamp Disposalmentioning

confidence: 99%

Mercury risk from fluorescent lamps in China: Current status and future perspective

Cheng

2012

Environment International

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“…The mercury content of coal varies with its region of origin (6,7). During combustion, elemental mercury (Hg 0 ) is transformed to gaseous oxidized mercury (Hg 2+ ) or particle-bound mercury (Hg p ), with the extent of transformation depending on coal characteristics and combustion conditions (8).…”

Section: Mercury Emissions From Us Coal-fired Power Plantsmentioning

confidence: 99%

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

Milford

Pienciak

2009

Environ. Sci. Technol.

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In 2008, the U.S. Court of Appeals for the District of Columbia Circuit vacated the Clean Air Mercury Rule, which affected the U.S. EPA’s ability to curtail mercury emissions from coal-fired power plants. While the Obama Administration and federal courts address the issue of mercury emissions, many states have laws that are stricter than EPA’s limits. In this issue’s Feature, two researchers from the University of Colorado Boulder overview the history of these rules and present a clearer picture of how U.S. jurisdictions are addressing the mercury released from burning coal to generate electricity.

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Status review of mercury control options for coal-fired power plants

Cited by 836 publications

References 53 publications

Catalytic Reduction of Oxidized Mercury to Elemental Form by Transition Metals for Hg CEMS

Catalytic Reduction of Oxidized Mercury to Elemental Form by Transition Metals for Hg CEMS

Mercury risk from fluorescent lamps in China: Current status and future perspective

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

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