Evaluating the Relationships between Pb Species and Leaching Properties in Simulated MSWI Fly Ash with Thermal Treatment by ESCA
Publication: Journal of Environmental Engineering
Volume 138, Issue 6
Abstract
The aim of this study was to develop a fundamental understanding of the association between lead (Pb) species and leachability behavior in the simulated municipal solid waste incinerator (MSWI) fly ash during the thermal treatment process. Two main factors that influence this process, temperature and the carbon content in the simulated ash, were also studied. In the sequential extraction results, the main distribution pattern of Pb in treated simulated ash was carbonate fraction with different temperatures when the carbon content was 3.5%. The chief fraction of the raw simulated ash () was carbonate and that of raw simulated ash when carbon content was increased was Fe-Mn oxide Electron spectroscopy for chemical analysis (ESCA) results showed that Pb (element) in treated simulated ash could increase the toxicity characteristic leaching procedure (TCLP) concentration of Pb when temperatures reached 700°C. With a temperature of 900°C, was present in the treated simulated ash and reduced the TCLP concentration of Pb. A comparison of different carbon contents showed that -related compounds were present in the raw simulated ash and caused the distribution patterns of Pb to become stable as carbon content was increased.
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Information
Published In
Journal of Environmental Engineering
Volume 138 • Issue 6 • June 2012
Pages: 632 - 636
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Aug 9, 2010
Accepted: Nov 17, 2011
Published online: Nov 19, 2011
Published in print: Jun 1, 2012
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