Back to Search
Start Over
Vitrification of fly ash from municipal solid waste incinerator
- Source :
-
Journal of Hazardous Materials . Apr2002, Vol. 91 Issue 1-3, p83. 11p. - Publication Year :
- 2002
-
Abstract
- Fly ash from municipal solid wastes (MSW) incinerators in Korea contains a large amount of toxic materials and requires pertinent treatments. However, since fly ash in Korea has a high chlorine concentration, it is difficult to apply cementation and chemical treatment techniques. In this study, we report the vitrification of fly ash along with the properties of the glasses and leaching characteristics of heavy metal ions.Fly ash can be vitrified by melting at 1500 °C for 30 min with the addition of >5 wt.% of SiO2. Glasses showed Vickers hardness of 4000–5000 MPa, bending strength of 60–90 MPa and indentation fracture toughness of ∼ 0.9 MPa m1/2. Glasses also showed the excellent resistance against leaching of heavy metal ions with <F>Cd2+<0.04</F> ppm, <F>Cr3+<0.02</F> ppm, <F>Cu2+<0.04</F> ppm and <F>Pb2+<0.2</F> ppm. These results indicate that the vitrification technique is effective for the stabilization and recycling of toxic incinerator fly ash. [Copyright &y& Elsevier]
- Subjects :
- *RADIOACTIVE waste vitrification
*FLY ash
*HAZARDOUS waste incineration
Subjects
Details
- Language :
- English
- ISSN :
- 03043894
- Volume :
- 91
- Issue :
- 1-3
- Database :
- Academic Search Index
- Journal :
- Journal of Hazardous Materials
- Publication Type :
- Academic Journal
- Accession number :
- 7768436
- Full Text :
- https://doi.org/10.1016/S0304-3894(01)00362-4