Study on the Removal of Dioxins in Exhaust Gas of Incinerator by Artificial Zeolite. (part 2).
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概要
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In this study, both the change of removal efficiency according to operation time and decomposition of Dioxins by heating were investigated on the removal of Dioxins (polychlorinated dibenzo-<I>p</I>-dioxins and polychlorinated dibenzofurans=PCDD/DF) in exhaust gas of incinerator by fly ash-derived artificial zeolite. The removal rates calculated by TEQ value of vapor PCDD/DF in exhaust gas of small size incinerator were as follows: 98.7 % at the initial operation and 91.8 % after 300 hours (at 150°C, 10000 h<SUP>-1</SUP> as SV value) . The relatively low removal rate after 300 hours was due to the decreasing adsorption of low chlorinated PCDD/DF-congeners. Highly efficient decomposition (about 99 %) of adsorbed chlorinated PCDD/DF-congeners were found in used artificial zeolite after heating for one hour at 300-350°C in nitrogen gas atmosphere.
- 日本環境化学会の論文
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