Impact of secondary generated minerals on toxic element immobilization for air pollution control fly ash of a municipal solid waste incinerator.

Environmental Science and Pollution Research International
Hiroki KitamuraFumitake Takahashi

Abstract

Impacts of secondary generated minerals on mineralogical and physical immobilization of toxic elements were investigated for chelate-treated air pollution control (APC) fly ash of a municipal solid waste incinerator. Scanning electron microscope (SEM) observation showed that ettringite was generated after the moistening treatment with/without chelate. Although ettringite can incorporate toxic elements into its structure, elemental analysis by energy dispersive X-ray could not find concentrated points of toxic elements in ettringite structure. This implies that mineralogical immobilization of toxic element by the encapsulation to ettringite structure seems to be limited. Physical immobilization was also investigated by SEM observation of the same APC fly ash particles before and after the moistening treatment. The transfer of soluble elements was inhibited only when insoluble minerals such as gypsum were generated and covered the surface of fly ash particles. Neoformed insoluble minerals prevented soluble elements from leaching and transfer. However, such physical immobilization seems to be limited because insoluble mineral formation with surface coverage was monitored only one time of more than 20 observations. Although uncerta...Continue Reading

References

Sep 15, 2004·Journal of Hazardous Materials·Alessandra Polettini, Raffaella Pomi
Apr 13, 2005·Waste Management·T Van GervenC Vandecasteele
Sep 6, 2005·Journal of Hazardous Materials·Eva RendekPatrick Germain
Mar 17, 2006·Journal of Hazardous Materials·S ArickxC Vandecasteele
May 30, 2006·Journal of Hazardous Materials·Geert CornelisCarlo Vandecasteele
Jun 22, 2006·Environmental Science & Technology·Thomas AstrupThomas H Christensen
Jul 15, 2006·Journal of Hazardous Materials·Feng-Yim Chang, Ming-Yen Wey
Oct 4, 2006·Waste Management·Xiaomin LiStef Simon
Jul 7, 2009·Environmental Pollution·Jian-guo JiangChang Zhang
Oct 27, 2009·Journal of Hazardous Materials·Lei WangYongfeng Nie
Sep 5, 2015·Environmental Science and Pollution Research International·Hiroki KitamuraFumitake Takahashi

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Citations

Nov 10, 2021·Environmental Science and Pollution Research International·Hiroki KitamuraMasato Yamada

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