Surface and bulk studies of leached and unleached fly ash using XPS, SEM, EDS and FTIR techniques

The effective chemical utilization of fly ash in environmental applications requires a detailed knowledge of the surface and bulk changes induced by leaching in acid solutions. The surface and bulk characteristics of fly ash from the combustion of Texas lignite have been examined by X-ray photoelect...

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Bibliographic Details
Published in:Cement and concrete research 1994, Vol.24 (1), p.109-118
Main Authors: Mollah, M.Yousuf A., Hess, Thomas R., Cocke, David L.
Format: Article
Language:English
Subjects:
Applied sciences
Combustion of solid fuels
Combustion. Flame
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Theoretical studies. Data and constants. Metering
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Summary:The effective chemical utilization of fly ash in environmental applications requires a detailed knowledge of the surface and bulk changes induced by leaching in acid solutions. The surface and bulk characteristics of fly ash from the combustion of Texas lignite have been examined by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and Fourier transform infrared spectroscopy (FTIR). The effects of leaching with acid solutions commonly used in environmental studies have been documented using these techniques. The results of these studies reveal that the fly ash particles are relatively resistant to either chemical or physical changes due to attack by acidic leaching solutions.
ISSN:0008-8846
1873-3948
DOI:10.1016/0008-8846(94)90091-4