globalchange  > 气候变化与战略
DOI: 10.1016/j.atmosenv.2019.117084
论文题名:
Different formation mechanisms of PAH during wood and coal combustion under different temperatures
作者: Han Y.; Chen Y.; Feng Y.; Song W.; Cao F.; Zhang Y.; Li Q.; Yang X.; Chen J.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 222
语种: 英语
英文关键词: Coal ; Fuels ; Housing ; Molecular weight ; Polycyclic aromatic hydrocarbons ; Size distribution ; Temperature ; Wood ; Combustion experiments ; Combustion temperatures ; Formation mechanism ; Fuel types ; Increasing temperatures ; Polycyclic aromatic hydrocarbons (PAHS) ; Solid fuel combustion ; Supramolecular structure ; Coal combustion ; acenaphthene ; acenaphthylene ; chrysene ; coal ; naphthalene ; perylene ; phenanthrene ; polycyclic aromatic hydrocarbon derivative ; silicon dioxide ; coal combustion ; emission ; experimental study ; formation mechanism ; low temperature ; PAH ; temperature effect ; temperature gradient ; wood ; chemical structure ; combustion ; Cystinosis indica ; fire and fire related phenomena ; furnace ; high temperature ; low temperature ; Melia azedarach ; molecular weight ; nonhuman ; particle size ; pine ; Pinus sekiya ; priority journal ; pyrolysis ; supramolecular chemistry ; synthesis ; temperature ; wood
学科: Formation mechanism ; Fuel type ; PAH ; Residential solid fuel combustion ; Size distribution ; Temperature
中文摘要: Residential solid fuel combustion (RSFC) is a major contributor to polycyclic aromatic hydrocarbons (PAHs) in the atmosphere, which are strongly related to negative health impacts. During RSFC, the variations of PAH emission factors (EFs) and size-resolved profiles are known to be highly affected by fuel type and combustion temperature. In this study, to investigate the behavior of emitted PAH, combustion experiments were performed using three wood and three coal types under different temperatures (500 °C and 800 °C) in a quartz tube furnace. The results show that the average EFs of PAH (17-EPA-PAHs) from low temperature coal combustion were nearly three times higher than those from low temperature wood combustion. However, with high temperature, PAH emissions from wood combustion increased two-fold and that from coal combustion decreased by two orders. Furthermore, And the proportion of high-molecular-weight PAHs (HPAHs) increased with increasing temperature in wood combustion, but decreased in coal combustion. This indicates that PAH synthesis was the dominant process during wood combustion, while pyrolysis of coal supramolecular structure was the main formation pathway of PAH during coal combustion. In addition, more low-molecular-weight PAHs (LPAHs) were emitted, with 0.006 μm–0.050 μm and 0.223 μm–1 μm particles in the early burning stage, while more HPAHs were emitted in the later burning stage, with larger particles in the size range of 0.050 μm–0.223 μm. This means that the PAH formations were different during each burning stage. © 2019 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160642
Appears in Collections:气候变化与战略

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作者单位: Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai, 200438, China; State Key Laboratory of Pollution Control and Resources Reuse, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China; Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China; Yale–NUIST Center on Atmospheric Environment, International Joint Laboratory on Climate and Environment Change (ILCEC), Nanjing University of Information Science and Technology, Nanjing, 210044, China; Jiangsu Provincial Key Laboratory of Agricultural Meteorology, College of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing, 210044, China

Recommended Citation:
Han Y.,Chen Y.,Feng Y.,et al. Different formation mechanisms of PAH during wood and coal combustion under different temperatures[J]. Atmospheric Environment,2020-01-01,222
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