Synthesis of zeolites from municipal incinerator fly ash

In this work, synthesis of zeolite-like materials from a municipal incinerator fly ash (MIFA) was carried out by means of hydrothermal processing. MIFA is generally hazardous in nature. Therefore, many technologies have been developed for the treatment, disposal, and utilization of this special wast...

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Bibliographic Details
Published in:Journal of hazardous materials 1998-09, Vol.62 (1), p.75-89
Main Authors: Yang, Gordon C.C, Yang, Tsung-Yin
Format: Article
Language:English
Subjects:
Applied sciences
Chemistry
Exact sciences and technology
General and physical chemistry
Ion-exchange
Municipal incinerator fly ash
Other wastes and particular components of wastes
Pollution
Surface physical chemistry
Synthesis
Wastes
Zeolite
Zeolites: preparations and properties
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Summary:In this work, synthesis of zeolite-like materials from a municipal incinerator fly ash (MIFA) was carried out by means of hydrothermal processing. MIFA is generally hazardous in nature. Therefore, many technologies have been developed for the treatment, disposal, and utilization of this special waste. In this investigation, conversion of MIFA to zeolite-like materials was conducted in reaction bombs that were subjected to heating in a rocking chamber. Aqueous NaOH was used as a mineralizer to assist the conversion reaction. Experimental parameters studied include the mineralizer concentration, solid/liquid (i.e., MIFA/mineralizer) ratio, reaction time, and operating temperature. Powder patterns of X-ray diffraction analysis have shown that several types of zeolite such as gismondine and gmelinite were successfully synthesized under certain experimental conditions. Therefore, it is technically feasible to synthesize zeolites from MIFA. Based on the promising results obtained, further studies are under way to upgrade the quality of synthesized products so that their applications could be expanded.
ISSN:0304-3894
1873-3336
DOI:10.1016/S0304-3894(98)00163-0