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KMID : 1024520070160010009
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Journal of the Environmental Sciences
2007 Volume.16 No. 1 p.9 ~ p.19
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The Role of (Chloro-) Phenols in the Formation of Polychlorinated Dibenzofurans in Municipal Waste Incinerators
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Ryu Jae-Yong
Jang Seong-Ho
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Abstract
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Comparing predicted PCDF isomer patterns with those obtained from a municipal waste incinerator assessed the role of two-phenol condensation pathways in the formation of PCDFs. Complete PCDF homologue and isomer distributions were obtained from a Fluidized Bed Incinerator (FBI). Two-phenol condensation model, dependent only on the distributions of phenols, was developed to predict the PCDF congeners produced from phenol precursors. R-squared values from linear correlations are presented for the dichlorinated through hexa-chlorinated isomer distributions between measured and predicted. They range from 0.00: to 0.1 far the di-chlorinated through hexa-chlorinated isomer sets. Agreement between predicted and measured PCDF isomer distributions was very poor for all homologues. Two-phenol condensation pathways are not likely to be the pre-dominant pathways in the formation of PCDF in a FBI. However, dibenzofuran (DF) is likely to be produced from a condensation of two phenols. This work demonstrates the use of PCDF homologue and isomer patterns for testing PCDF formation mechanism from two-phenol condensation pathways in municipal waste incinerators.
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KEYWORD
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Municipal waste incinerator, Thermal process, Combustion, Chlorophenols, Polychlorinated Dibenzofurans (PCDFs), PCDF Prediction model, Fluidized bed incinerator
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