Glass-ceramics from municipal incinerator fly ash

Journal Article · Sat Nov 01 04:00:00 EST 1997 · American Ceramic Society Bulletin

OSTI ID:596804

Boccaccini, A R ^[1]; Petitmermet, M; Wintermantel, E ^[2]

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1. Technische Univ. Ilmenau (Germany). Fachgebiet Werkstofftechnik
2. Swiss Federal Inst. of Tech., Schlieren (Switzerland). Dept. of Biocompatible Materials Science and Engineering

In countries where the population density is high and the availability of space for landfilling is limited, such as the west-European countries and Japan, the significance of municipal solid waste incineration, as part of the waste management strategy, is continuously increasing. In Germany and Switzerland, for example, more than {approximately}40% of unrecycled waste is being or will be incinerated. Also, in other countries, including the US, the importance of waste incineration will increase in the next few years. Although incineration reduces the volume of the waste by {approximately} 90%, it leaves considerable amounts of solid residues, such as bottom and boiler ashes, and filter fly ashes. Consequently, new technological options for the decontamination and/or inertization of incinerator filter fly ash are being developed with the objective of rendering a product that can be reused or, at least, be deposited in standard landfill sites with no risk. The proposed alternatives include immobilization by cement-based techniques, wet chemical treatments and thermal treatments of vitrification. Of these, vitrification is the most promising solution, because, if residues are melted at temperatures > 1,300 C, a relatively inert glass is produced. In the present investigation, glass-ceramics were obtained by a controlled crystallization heat treatment of vitrified incinerator filter fly ashes. The mechanical and other technical properties of the products were measured with special emphasis on assessing their in vitro toxic potential.

• OSTI ID: 596804
• Journal Information: American Ceramic Society Bulletin, Journal Name: American Ceramic Society Bulletin Journal Issue: 11 Vol. 76; ISSN 0002-7812; ISSN ACSBA7
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
36 MATERIALS SCIENCE
CERAMICS
FABRICATION
FLY ASH
INCINERATORS
MECHANICAL PROPERTIES
MICROSTRUCTURE
MUNICIPAL WASTES
PHYSICAL PROPERTIES
USES
VITRIFICATION
WASTE PRODUCT UTILIZATION