Respirable aerosols from fluidized bed coal combustion. 3. Elemental composition of fly ash
Fluidized bed coal combustion is a promising technology for using coal in an environmentally acceptable manner. Trace elemental constituents in fly ash from an experimental atmospheric pressure fluidized bed combustor (AFBC) are reported and compared with pulverized-coal combustor (PCC) ash data and those from other fluidized bed combustors. Bulk and size-separated particles were collected and analyzed by using spark source mass spectrometry.Fluidized bed combustor ash was similar to PCC ash in minor and trace element composition. However, AFBC ash showed less size dependence of elemental composition than has been reported for PCC ash. Bulk particle elemental composition varied with sampling position within the effluent stream. Penetration of elements through each cleanup stage and elemental enrichment were a function of the cleanup stage and the element under consideration.
- Research Organization:
- Lovelace Biomedical and Environmental Research Inst., Albuquerque, NM
- DOE Contract Number:
- AC04-76EV01013
- OSTI ID:
- 6386194
- Journal Information:
- Environ. Sci. Technol.; (United States), Vol. 17:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
FLUIDIZED-BED COMBUSTION
AEROSOLS
FLY ASH
CHEMICAL COMPOSITION
COAL
ELEMENTS
EXHAUST SYSTEMS
PARTICLE SIZE
PARTICULATES
AEROSOL WASTES
ASHES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COLLOIDS
COMBUSTION
DISPERSIONS
ENERGY SOURCES
FOSSIL FUELS
FUELS
MATERIALS
OXIDATION
PARTICLES
RESIDUES
SIZE
SOLS
THERMOCHEMICAL PROCESSES
WASTES
016000* - Coal
Lignite
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500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)
560306 - Chemicals Metabolism & Toxicology- Man- (-1987)