||Mechanistic Implications of Polychlorinated Dibenzodioxin and Dibenzofuran Homologue Profiles from Municipal Waste and Coal Co-Combustion.
Gullett, B. K. ;
Dunn, J. E. ;
Bae, S. K. ;
Raghunathan, K. ;
||ARCADIS Geraghty and Miller, Inc., Research Triangle Park, NC. ;Arkansas Univ., Fayetteville. Dept. of Mathematical Sciences. ;Changwon National Univ. (Republic of Korea). Dept. of Environmental Engineering.;Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div.;Illinois Clean Coal Inst., Carterville.
Polychlorinated dibenzodioxins ;
Polychlorinated dibenzofurans ;
Air pollution sampling ;
Combustion products ;
Municipal wastes ;
Coal combustion ;
Combustion kinetics ;
Exhaust emissions ;
Air pollution sources ;
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The paper discusses the mechanistic implications of polychlorinated dibenzodioxin and dibenzofuran (PCDD and PCDF) homologue profiles from municipal waste and coal co-combustion. Variation in PCDD and PCDF homologue profiles from a pilot-scale, co-fired-fuel combustion program was used to provide insights into postcombustion PCDD and PCDF pollution formation mechanisms. The molar quantities of the mono- to octa-chlorinated homologues were determined as a function of sampling temperature and residence time, combustor operating conditions, and fuel type mixtures from a research program designed to determine the effect of co-firing coal with municipal solid waste on emissions of PCDDs and PCDFs. A 24-run, statistically designed test matrix varied dRDF and/or coal firing rates (at a constant targeted energy release rate) along with a range of process variables including calcium hydroxide injection, hydrogen chloride concentration, flue gas temperature, quench, and residence time such that the results would be relatable to a wide variety of waste combustors.