Abstract
TCLP analysis (USEPA method 1311) was employed on fly ash in order to analyze the metals leachability and the concentration of cadmium was 0.3225 mg/L which exceeded state TCLP standard(0.3 mg/L). According to USEPA method 1613, I-TEQ of PCDD/Fs in fly ash was 0.45 ng/g. Then a double arcs DC plasma torch was developed to vitrified fly ash. And the results showed that heavy metals were mostly immobilized in the vitrified slag and also I-TEQ of PCDD/Fs in fly ash was destroyed near 91.6%. The morphology of vitrified slag was amorphous state which showed the glassy slag of SiO2 and the microstructure of slag was very compact.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Air Pollutants / analysis
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Air Pollutants / chemistry*
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Air Pollution / analysis
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Air Pollution / prevention & control
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Carbon / analysis
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Carbon / chemistry*
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Cities*
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Coal Ash
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Environmental Monitoring / methods
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Incineration / methods*
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Metals, Heavy / analysis
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Metals, Heavy / chemistry*
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Particulate Matter / analysis
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Particulate Matter / chemistry*
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Polychlorinated Dibenzodioxins / analogs & derivatives
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Polychlorinated Dibenzodioxins / analysis
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Polychlorinated Dibenzodioxins / chemistry
Substances
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Air Pollutants
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Coal Ash
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Metals, Heavy
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Particulate Matter
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Polychlorinated Dibenzodioxins
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Carbon