Observations on the Effect of Process Parameters on Dioxin/Furan Yield in Municipal Waste and Coal Systems

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• 作者：Gullett ; Brian K. ; Raghunathan ; K.
• 刊名：Chemosphere
• 出版年：1997
• 期刊代码：15_00456535
• 类别：env
• 出版时间：March 4, 1997
• 卷：34
• 期：5-7
• 页码：1027-1032
• 文件大小：396 K

摘要

Effects of fly ash loading; ash-borne, extractable organics; sulfur dioxide (SO₂) and hydrogen chloride (HCI) concentration; and combustion quality on the formation of polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofuran (PCDD/F) 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 the 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/F is prevented in both simulated municipal waste combustion and coal/waste co-firing.