SULCAL: a model of sulfur chemistry in a plume

Technical Report · Thu Apr 01 04:00:00 EST 1976

OSTI ID:7285052

Baes, Jr, C F; Holdeman, J T; Culkowski, W M

A computer program has been written that models the following features of the chemical behavior of sulfur emitted to the atmosphere from fossil-fuel burning power plants: (1) the rapid reactions of SO/sub 2/ with aerosol droplets to produce the dissolved sulfite species H/sub 2/SO/sub 3/,HSO/sub 3//sup -/ and SO/sub 3//sup 2 -/; (2) the rapid reactions of SO/sub 3/ to produce the dissolved sulfate species HSO/sub 4//sup -/ and SO/sub 4//sup 2 -/; (3) the neutralization of the acid thus produced by atmospheric ammonia and (4) the eventual formation of particulate ammonium sulfate; (5) the slow oxidation of SO/sub 2/ to sulfate species by hydroxyl radical, and (6) the slow oxidation of species of SO/sub 2/ in aerosol droplets to sulfate species by dissolved ozone and oxygen. The model employs averaged concentrations based on the Gaussian plume and can calculate deposition rates for gaseous and particulate material as a function of such variables as distance from the source, wind speed, meterological stability class, temperature, relative humidity, and the ambient concentrations of OH radical, ozone, and ammonia.

• Research Organization: Oak Ridge National Lab., Tenn. (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 7285052
• Report Number(s): ORNL/NSF/EATC-21
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010900* -- Coal
Lignite
& Peat-- Environmental Aspects
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOLS
AIR POLLUTION
AMMONIA
AMMONIUM COMPOUNDS
AMMONIUM SULFATES
CHALCOGENIDES
CHEMICAL EFFLUENTS
CHEMICAL REACTIONS
COLLOIDS
COMPUTER CODES
CRYOGENIC FLUIDS
DISPERSIONS
DROPLETS
ELEMENTS
FLUIDS
FOSSIL-FUEL POWER PLANTS
HYDRIDES
HYDROGEN COMPOUNDS
MATHEMATICAL MODELS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
OXIDATION
OXIDES
OXYGEN
OXYGEN COMPOUNDS
OZONE
PARTICLES
PH VALUE
PLUMES
POLLUTION
POWER PLANTS
S CODES
SOLS
SULFATES
SULFITES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SULFUR TRIOXIDE
THERMAL POWER PLANTS