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CORRELATIONS BETWEEEN PCDD/F HOMOLOGUE CONCENTRATIONS AND TEQ VALUES IN LABORATORY-, BOILER-, AND PRACTICAL-SCALE INCINERATORS
Citation:
Iino**, F, T. Takasuga, A. Touati, AND B K. Gullett*. CORRELATIONS BETWEEEN PCDD/F HOMOLOGUE CONCENTRATIONS AND TEQ VALUES IN LABORATORY-, BOILER-, AND PRACTICAL-SCALE INCINERATORS. 2001.
Description:
The toxic equivalent (TEQ) values of polychlorinated dibenzo-p-dioxins and polychlorianted dibenzofurans (PCDDs/Fs) are predicted, according to proposed equations, from the homologue concentrations measured from a laboratory-scale reactor (124 data points), a commercial package boiler (61 data points), and operating municipal waste incinerators (114 data points). Regardless of the three scales and types of equipment, the different temperature profiles, and the various chemical and physical properties of the starting materials, all the PCDF plots showed highly linear correlations (R2>0.99). The PCDD plots showed significant scatter and poor linearity, which implies that PCDD formation is more sensitive to variations in reaction conditions than PCDF formation. Although it is still uncertain whether dechlorination is a controlling reaction for PCDF formation, this model is capable of predicting PCDF TEQ values from the measured homologue concentrations. It can be concluded that PCDF TEQ values are proportional to the homologue concentrations, but the PCDD TEQ values are not.