Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China; College of Environment, Zhejiang University of Technology, Hangzhou 310014, China.
Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
Environ Pollut. 2017 May;224:421-429. doi: 10.1016/j.envpol.2017.02.022. Epub 2017 Feb 22.
Little information exists on emission factors (EFs, quantities of pollutants emitted per unit of fuel consumed) for brick kilns in China, although brick kilns are important emission sources of many air pollutants, and 45% of the world's bricks are produced in China. In this study, EFs of carbon dioxide (CO), carbon monoxide (CO), sulfur dioxide (SO), nitrogen oxides (NOx), particulate matters (PMs), black carbon (BC), organic carbon (OC), and polycyclic aromatic hydrocarbons (PAHs) for brick kilns were derived based on field measurements of a total of 18 brick kilns of major types in China. This was the first study to quantify EFs of both stack and fugitive sources based on a modified carbon balance method that was developed for this study. The EFs of most pollutants, especially the incomplete combustion products in fugitive emissions, were much higher than those for stack emissions, indicating a substantial underestimation of total emissions when leakage is not taken into consideration. This novel method can be applied to quantify emissions from other similar sources with both stack and fugitive emissions.
关于中国砖窑的排放因子（EF，单位燃料消耗所排放的污染物数量），相关信息很少，尽管砖窑是许多空气污染物的重要排放源，并且全球 45%的砖块是在中国生产的。在这项研究中，基于对中国主要类型的 18 个砖窑的实地测量，得出了二氧化碳（CO）、一氧化碳（CO）、二氧化硫（SO）、氮氧化物（NOx）、颗粒物（PM）、黑碳（BC）、有机碳（OC）和多环芳烃（PAHs）的排放因子。这是首次使用本研究开发的改进碳平衡法，对烟囱和无组织排放源的排放因子进行量化的研究。大多数污染物的排放因子，特别是无组织排放中的不完全燃烧产物，远高于烟囱排放的排放因子，这表明如果不考虑泄漏，总排放量的估算会严重不足。这种新方法可应用于量化具有烟囱和无组织排放的其他类似源的排放。
