Stabilization Behavior of Heavy Metals Derived from Wastes on Cementitious Minerals and Hydrates

Ji Whan Ahn; Kwang Suk You; Gi Chun Han; Kye Hong Cho

doi:10.4028/www.scientific.net/MSF.510-511.630

Paper Titles

Polymer/Inorganic Composite Materials for Quick Repair of Cement Concrete Pavement
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Luminescence Porous Ceramics Using Recycling Glass
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Effect of Pair-Mineralizer on the Reaction of Alite and Calcium Langbeinite Formation
p.622

Zeolite Synthesis from Coal Bottom Ash for Recycling as an Absorbent of Heavy Metals
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Stabilization Behavior of Heavy Metals Derived from Wastes on Cementitious Minerals and Hydrates
p.630

Effect of Slag Compositions on the Extraction of Metallic Components from the Used PCB
p.634

Low Temperature Synthesis of Porous Cordierite from Fly Ash
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Fabrication and Characterization of Porous Ceramic Panel Using Recycled Glass Powder
p.642

Formation Characterization of Ultra-Fine Cu Powder from Cu(OH)₂ Slurry by Wet Reduction Method
p.646

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Stabilization Behavior of Heavy Metals Derived from Wastes on Cementitious Minerals and Hydrates

Abstract:

In this paper, the application of wastes as raw materials to cementitious mineral was investigated. A rolling slag, which contains plenty of heavy metals, was used as a raw material to synthesize calcium sulfoaluminate. It was found that the suitable burning temperature of CSA clinker is between 1,250°C and 1,300°C, and the residual content of heavy metals in the CSA clinker turned out sequentially as Cu, Zn, Cr, and Pb. According to the results of the investigation, it is believed that a large amount of the Cu, Zn and Cr present in the raw materials were fixed in the CSA clinker formed during the sintering process. It was further found that the distortion of the crystal morphology of hydrate, which was ettringite, took place according to the substitution of heavy metals during the hydration process.