PMID: 11900907Mar 20, 2002Paper

Vitrification of fly ash from municipal solid waste incinerator

Journal of Hazardous Materials
Young Jun Park, Jong Heo

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 degrees 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 approximately 0.9 MPa m(1/2). Glasses also showed the excellent resistance against leaching of heavy metal ions with Cd2+ <0.04 ppm, Cr3+ <0.02 ppm, Cu2+ <0.04 ppm and Pb2+ <0.2 ppm. These results indicate that the vitrification technique is effective for the stabilization and recycling of toxic incinerator fly ash.

Citations

Apr 7, 2005·Journal of Hazardous Materials·Isabel BeauchesneJean-François Blais
Jun 16, 2012·Journal of the Air & Waste Management Association·Franc ZupanicNiko Samec
Aug 11, 2007·Journal of the Air & Waste Management Association·Yi-Ming KuoCheng-Hsien Tsai
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Nov 27, 2007·Waste Management·Margarida J QuinaRosa M Quinta-Ferreira
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Jun 6, 2021·Journal of Hazardous Materials·Zongwen ZhaoYanjie Liang
Feb 11, 2014·Environmental Science & Technology·Anelise Leal Vieira CubasIvan Gonçalvez de Souza

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