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RECORD NUMBER: 36 OF 57

Main Title Effect of Sulfur Dioxide on the Formation Mechanism of Polychlorinated Dibenzodioxin and Dibenzofuran in Municipal Waste Combustors.
Author Gullett, B. K.; Bruce, K. R.; Beach, L. O.;
CORP Author Acurex Corp., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher c1992
Year Published 1992
Report Number EPA-68-DO-0141; EPA/600/J-92/410;
Stock Number PB93-131852
Subjects Polychlorinated dibenzodioxins; Polychlorinated dibenzofurans; Municipal wastes; Waste disposal; Air pollution abatement; Combustors; Sulfur dioxide; Combustion products; Catalysts; Experimental design; Chlorine organic compounds; Chemical reactions; Combustion kinetics; Reprints; Chemical reaction mechanisms
Holdings
Library   Call Number Additional Info Location Date Modified
NTIS PB93-131852 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/08/1993
Collation 8p
Abstract The paper gives results of an investigation of the effect of SO2 on the formation mechanism of polychlorinated dibenzodioxin (PCDD) and polychlorinated dibenzofuran (PCDF) in the post-combustion, downstream region (500 to 300 C) of a municipal waste combustor (MWC). Laboratory experiments simulating the flue gases and particle environment of an MWC examined PCDD production under varying conditions. Effects on the concentration of the organic-chlorinating constituent, Cl2, through both homogeneous reaction with SO2 and deactivation of a Cl2-forming catalyst, Cu(II), were examined. Experimental results suggest that the reaction of Cu(II) with SO2 to form CuSO4 renders the catalyst less active, decreasing PCDD formation by minor amounts. However, this inactivity is not the result of decreased Cl2 formation, but rather of reduced ability of Cu(II) to promote a second catalytic step of biaryl synthesis. These findings suggest that the apparent lack of PCDD and PCDF in the emissions from coal-fired combustors may be due to the relatively high concentrations of SO2. (Copyright (c) 1992 American Chemical Society.)
Supplementary Notes Pub. in Environmental Science and Technology, v26 n10 p1938-1943 1992. See also PB89-239223. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
NTIS Title Notes Journal article.
Title Annotations Reprint: Effect of Sulfur Dioxide on the Formation Mechanism of Polychlorinated Dibenzodioxin and Dibenzofuran in Municipal Waste Combustors.
Category Codes 68A; 68C; 81A; 99F
NTIS Prices PC A02/MF A01
Primary Description 600/13
Document Type NT
Control Number 303626850
Cataloging Source NTIS/MT
Origin NTIS
Type CAT