Influence of carbonaceous particles on the interaction of coal combustion stack ash with organic matter
Stack ash samples were fractionated by aerodynamic size, and the largest particle size fraction was separated into constituent particle type subfractions. Comparison of the mineral, magnetic, and carbonaceous particles showed that coked coal is responsible for the sorptivity of the large particle size fraction for carbon-14 labeled benzo(a)pyrene ((/sup 14/C)BaP) and for low solvent extraction recoveries. Elevated levels of organic matter and surface area also are contributed by the carbonaceous particles. In contrast, solvent extraction recoveries of polar degradation products of (/sup 14/C)BaP are attributable more to the mineral and magnetic particles and to exposure of the ash to light and oxygen. Analysis of bulk ash samples may not fully reflect the true organic composition of stack ash. 27 references, 1 figure, 4 tables.
- Research Organization:
- Oak Ridge National Lab., TN
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5869957
- Journal Information:
- Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 20:3; ISSN ESTHA
- Country of Publication:
- United States
- Language:
- English
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010600* -- Coal
Lignite
& Peat-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
AEROSOL WASTES
AROMATICS
ASHES
BENZOPYRENE
CARBON 14 COMPOUNDS
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COAL
COMBUSTION
CONDENSED AROMATICS
DATA
ENERGY SOURCES
EXPERIMENTAL DATA
EXTRACTION
FLY ASH
FOSSIL FUELS
FRACTIONATION
FUELS
HYDROCARBONS
INFORMATION
LABELLED COMPOUNDS
MATERIALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC MATTER
OXIDATION
PARTICLE SIZE
PARTICLES
PARTICULATES
RESIDUES
SEPARATION PROCESSES
SIZE
SOLVENT EXTRACTION
SORPTIVE PROPERTIES
SURFACE AREA
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
WASTES