Paper Titles
Design of Glass-Ceramic Matrix by Modification of Microstructure for High Strength LTCC Application
p.541
Development of Artificial Soil Using Sewage Sludge
p.545
Dielectric Properties of Sol Infiltrated Lead Zirconate Titanate Ferroelectric Thick Films
p.549
Effect of Grinding and Extraction of Lignocellulosic Fiber on Oil Sorption
p.553
Effect of Magnetic Separation in Heavy Metals of Municipal Solid Waste Incineration Bottom Ash
p.557
Efficiency of Gypsum as a Capping Material for the Capturing of Phosphorus Release from Contaminated Lake Sediments
p.561
Evaluation of Capping Materials for the Stabilization of Contaminated Sediments
p.565
Evaporation and Stabilization of Heavy Metals with Colloid/Interface Properties in EAF Dust-Clay Bodies
p.569
Filtration Treatment of Pollutants in Urban Runoff Using Expanded Polypropylene Media
p.573

Effect of Magnetic Separation in Heavy Metals of Municipal Solid Waste Incineration Bottom Ash

Article Preview

Abstract:

Bottom ash contains many ferrous materials (e.g. ferrous metals, Fe3O4, Fe2O3, FeS). In addition, ferrous metals include the heavy metals, as Ni and Cr have a chemical attraction to iron, with Cu used to coat with Ni and Cr metals for polishing or to prevent corrosion. For ferrous metals, the formation of a Fe3O4-Fe2O3 double layer (similar to pure Fe) was found during air-annealing in an incinerator (1000C). A strong thermal shock, such as that which takes place during water-cooling of bottom ash, leads to the breakdown of this oxidation layer, facilitating the degradation of ferrous metals and the formation of corrosion products. Therefore, Fe-ion (heavy metal) oxides can be formed on ferrous metals, and magnetic separation can separate it from bottom ash. Thus, in this study the objection is to investigate the separation ratio of heavy metals by magnetic separation along with the mineralogical formation of Fe-ion (a heavy metal).

You might also be interested in these eBooks
Eco-Materials Processing and Design VIII View Preview

Info:

Periodical:

Materials Science Forum (Volumes 544-545)

Pages:

557-560

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.544-545.557

Citation:

Cite this paper

Online since:

May 2007

Authors:

Gi Chun Han, Nam Il Um, Kwang Suk You, Hee Chan Cho, Ji Whan Ahn

Keywords:

Bottom Ash, Chrome, Heavy Metal, Magnetic Separation, Nickel Ni

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] Ministry of Environment in Korea: The national waste generation and the present state of treatment 2004, (2005).

Google Scholar

[2] Kist Europe: State of the art of ash and construction waste recycling in Europe and plan for cooperation, (2002).

Google Scholar

[3] A.P. Miodownik. Vol. 18 (1970), pp.541-547.

Google Scholar

[4] A.L. Delgado, C. Pena, V. Lopez and F.A. Lopez: Fesources, Conservation and Fecycling Vol. 40 (2003), pp.39-51.

Google Scholar

[5] W. Bruckner, S. Baunack, M. Hecker, J. Thomas, S. Groudeva-Zotova and C.M. Schneider: Materials Science and Engineering Vol. 86 (2001), pp.272-275.

DOI: 10.1016/s0921-5107(01)00696-1

Google Scholar