Scanning electron microscopy and energy-dispersive x-ray spectroscopy analysis of submicrometer coal fly ash particles

Journal Article · Tue Jan 01 04:00:00 EST 1985 · Environ. Sci. Technol.; (United States)

DOI:https://doi.org/10.1021/es00133a011· OSTI ID:5757687

Lichtman, D; Mroczkowski, S

Scanning electron microscopy (SEM) and energy-dispersive x-ray spectroscopy (EDX) were used to analyze two groups of submicrometer coal fly ash particles from eastern and western power plants. The composition of the particles was related to the composition of the regional coal used. No sulfur was detected in the ash from the plant using low-sulfur western coal. The power plant using the higher sulfur concentration eastern coal produced ash containing 1.5% SO/sub 2/ equivalent. Similar correlations were found for other elements. While essentially all of the particles were spherical, the topography of the two groups was different. The particles from the Bull Run, TN (eastern), collection had a variable topography ranging from smooth to a few surface nodules. These surface nodules had a slightly elevated sulfur concentration. The particles from the Mojave, NV (western), collection were covered with surface nodules of varying size; none were glass smooth.

• Research Organization: Univ. of Wisconsin, Milwaukee
• OSTI ID: 5757687
• Journal Information: Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 19:3; ISSN ESTHA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010900* -- Coal
Lignite
& Peat-- Environmental Aspects
AEROSOL WASTES
ASHES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COAL
COMBUSTION
ELECTRON MICROSCOPY
ENERGY SOURCES
FEDERAL REGION IV
FEDERAL REGION IX
FLY ASH
FOSSIL FUELS
FUELS
GEOGRAPHICAL VARIATIONS
MATERIALS
MICROSCOPY
NEVADA
NORTH AMERICA
OXIDATION
OXIDES
OXYGEN COMPOUNDS
RESIDUES
SCANNING ELECTRON MICROSCOPY
SPECTROSCOPY
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TENNESSEE
THERMOCHEMICAL PROCESSES
USA
VARIATIONS
WASTES
X-RAY SPECTROSCOPY