Surface area and porosity of coal fly ash

Results of surface area measurements and morphology studies on two size-fractionated samples of coal fly ash reveal that small ash particles are predominately nonporous spheres with irregular surface morphology. The surface area is dependent on particle size for both samples. For the sample taken fr...

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Bibliographic Details
Published in:Environmental science & technology 1985-01, Vol.19 (1), p.82-86
Main Authors: Schure, Mark, Soltys, Pat A, Natusch, David F. S, Mauney, Thad
Format: Article
Language:English
Subjects:
Applied sciences
Atmospheric pollution
Exact sciences and technology
Pollutants physicochemistry study: properties, effects, reactions, transport and distribution
Pollution
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Summary:Results of surface area measurements and morphology studies on two size-fractionated samples of coal fly ash reveal that small ash particles are predominately nonporous spheres with irregular surface morphology. The surface area is dependent on particle size for both samples. For the sample taken from a particle collector it is shown that large surface areas are attributable to carbonaceous particles of highly porous character. The surface area of particles in a coal-fired power plant is suggested to be dependent on the point of collection.
ISSN:0013-936X
1520-5851
DOI:10.1021/es00131a009