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OBSERVATIONS ON THE EFFECT OF PROCESS PARAMETERS ON DIOXIN/FURAN YIELD IN MUNICIPAL WASTE AND COAL SYSTEMS
Citation:
Gullett*, B K. AND K. Raghunathan. OBSERVATIONS ON THE EFFECT OF PROCESS PARAMETERS ON DIOXIN/FURAN YIELD IN MUNICIPAL WASTE AND COAL SYSTEMS. CHEMOSPHERE 34(5-7):1027-1032, (1997).
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Description:
Effects of fly ash loading; ash-borne, extractable organics; sulfur dioxide (SO2) and hydrogen chloride concentration; and combustion quality on the formation of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) were evaluated in pilot scale tests simulating municipal waste combustion and coal/waste co-combustion testing. Similar PCDD/F yields from reinjection of as-received and extracted fly ash injection along with testing under poor combustion conditions show the importance of combustion quality on minimizing precursors. Co-firing coal and municipal solid waste ash leads to increased formation from that of firing coal alone, indicating that municipal solid waste ash provides additional reactants and/or catalytic sites for formation. Finally, tests with elevated SO2 levels found that, at sufficiently high sulfur/chlorine levels, formation of PCDD/Fs is prevented in both simulated municipal waste combustion and coal/waste co-firing.
