Open burning of household waste: Effect of experimental condition on combustion quality and emission of PCDD, PCDF and PCB

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• 作者：Gustavo Solorzano-Ochoa^a ; David A. de la Rosa^a ; Pablo Maiz-Larralde^b ; Brian K. Gullett^c ; Dennis G. Tabor^d ; Abderrahmane Touati^d ; Barbara Wyrzykowska-Ceradini^d ; Heidelore Fiedler^e ; Todd Abel^f ; William F. Carroll Jr.^f ; ^{bill_carroll@oxy.com}
• 关键词：Open burning ; Municipal solid waste ; PCDD ; PCDF ; PCB ; Stockholm Convention
• 刊名：Chemosphere
• 出版年：2012
• 期刊代码：15_00456535
• 类别：env
• 出版时间：May, 2012
• 卷：87
• 期：9
• 页码：1003-1008
• 文件大小：277 K

摘要

Open burning for waste disposal is, in many countries, the dominant source of polychlorinated dibenzodioxins, dibenzofurans and biphenyls (PCDD/PCDF/PCB) release to the environment. To generate emission factors for open burning, experimental pile burns of about 100 kg of household waste were conducted with emissions sampling. From these experiments and others conducted by the same authors it is found that less compaction of waste or active mixing during the fire - 鈥渟tirring鈥?- promotes better combustion (as evidenced by lower CO/CO₂ ratio) and reduces emissions of PCDD/PCDF/PCB; an intuitive but previously undemonstrated result. These experiments also support previous results suggesting PCDD/PCDF/PCB generation in open burning - while still highly variable - tends to be greater in the later (smoldering) phases of burning when the CO/CO₂ ratio increases.