期刊
CHEMOSPHERE
卷 87, 期 9, 页码 1003-1008出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2011.11.038
关键词
Open burning; Municipal solid waste; PCDD; PCDF; PCB; Stockholm Convention
资金
- United Nations Environment Programme, Chemicals Branch
- US EPA
- Chlorine Chemistry Division, American Chemistry Council
Open burning for waste disposal is, in many countries, the dominant source of polychlorinated dibenzo-dioxins, 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 - stirring - 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. (C) 2011 Elsevier Ltd. All rights reserved.
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