Characterization of fly ash from coal combustion

Conference · Sun Jan 01 04:00:00 EST 1978

OSTI ID:6570987

Natusch, D. F.S.

Fly ash derived from coal combustion contains predominantly spherical particles which consist of an insoluble aluminosilicate glass containing several mineral impurities. An outer layer, 50 to 300 A thick, is rich in many potentially toxic trace elements in the form of simple and complex sulfates. This layer, which is soluble in water, contains essentially all of the particulate sulfur present in fly ash in the form of sulfate. The actual mechanism(s) of formation of particulate sulfate salts are ill-defined but probably involve adsorption of condensation of gaseous sulfur species onto fly ash surfaces within the power plant stack system.

• Research Organization: Colorado State Univ., Fort Collins (USA)
• OSTI ID: 6570987
• Report Number(s): COO-4347-4; CONF-780481-3
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
AEROSOL WASTES
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COAL
COMBUSTION
ELEMENTS
ENERGY SOURCES
FLY ASH
FOSSIL FUELS
FUELS
OXIDATION
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SULFATES
SULFUR COMPOUNDS
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
TOXICITY
TRACE AMOUNTS
WASTES