Chemical reactions in power plant plumes
Conference
·
· Am. Chem. Soc., Div. Environ. Chem., Prepr.; (United States)
OSTI ID:7116172
- Environmental Protection Agency, Research Triangle Park, NC
During Project MISTT studies in 1975, concurrent measurements of NO, NO/sub 2/, and ozone were made in plumes around St. Louis. It is clear that conversion of NO to NO/sub 2/ is dominated by the reaction with ozone in the background air that mixes into the plume. Later in the plume where substantial NO has been converted to NO/sub 2/, there is a sharp increase in the rate of conversion of SO/sub 2/ to sulfate aerosol. This 2 stage conversion process of SO/sub 2/ has also been observed in smog chamber studies, thus it would seem that NO inhibits sulfate conversion. Studies of SO/sub 2/ in purified air result in rates of 0.2 to 5 percent/hour. There is a statistical correlation between increased temperature and relative humidity, and increased conversion rates; therefore a homogeneous reaction mechanism might be favored, but heterogeneous reactions are also possible and are probably the most important nighttime processes. It is important to know the reaction mechanism in designing a control strategy for sulfate. Graphs and profiles included.
- OSTI ID:
- 7116172
- Conference Information:
- Journal Name: Am. Chem. Soc., Div. Environ. Chem., Prepr.; (United States) Journal Volume: 16:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010900 -- Coal
Lignite
& Peat-- Environmental Aspects
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOLS
AIR POLLUTION
CHALCOGENIDES
CHEMICAL REACTIONS
COLLOIDS
DISPERSIONS
FOSSIL-FUEL POWER PLANTS
INDUSTRY
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
OZONE
PLUMES
POLLUTION
POWER PLANTS
SMOG
SOLS
SULFATES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TEMPERATURE DEPENDENCE
THERMAL POWER PLANTS
010900 -- Coal
Lignite
& Peat-- Environmental Aspects
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOLS
AIR POLLUTION
CHALCOGENIDES
CHEMICAL REACTIONS
COLLOIDS
DISPERSIONS
FOSSIL-FUEL POWER PLANTS
INDUSTRY
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
OZONE
PLUMES
POLLUTION
POWER PLANTS
SMOG
SOLS
SULFATES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TEMPERATURE DEPENDENCE
THERMAL POWER PLANTS