Influence of fuel mass load, oxygen supply and burning rate on emission factor and size distribution of carbonaceous particulate matter from indoor corn straw burning |
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| Authors: | Guofeng Shen Miao Xue Siye Wei Yuanchen Chen Bin Wang Rong Wang Huizhong Shen Wei Li Yanyan Zhang Ye Huang Han Chen Wen Wei Qiuyue Zhao Bin Li Haisuo Wu and Shu Tao |
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| Institution: | Jiangsu Academy of Environmental Sciences, Nanjing 210036, China;Laboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China;Jiangsu Academy of Environmental Sciences, Nanjing 210036, China;Laboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China;Laboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China;Laboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China;Laboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China;Laboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China;Laboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China;Laboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China;Laboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China;Laboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China;Laboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China;Laboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China;Jiangsu Academy of Environmental Sciences, Nanjing 210036, China;Jiangsu Academy of Environmental Sciences, Nanjing 210036, China;Jiangsu Academy of Environmental Sciences, Nanjing 210036, China;Laboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China |
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| Abstract: | The uncertainty in emission estimation is strongly associated with the variation in emission factor (EF), which could be influenced by a variety of factors such as fuel properties, stove type, fire management and even methods used in measurements. The impacts of these factors are complicated and often interact with each other. Controlled burning experiments were conducted to investigate the influences of fuel mass load, air supply and burning rate on the emissions and size distributions of carbonaceous particulate matter (PM) from indoor corn straw burning in a cooking stove. The results showed that the EFs of PM (EFPM), organic carbon (EFOC) and elemental carbon (EFEC) were independent of the fuel mass load. The differences among them under different burning rates or air supply amounts were also found to be insignificant (p > 0.05) in the tested circumstances. PM from the indoor corn straw burning was dominated by fine PM with diameter less than 2.1 μm, contributing 86.4% ± 3.9% of the total. The size distribution of PM was influenced by the burning rate and air supply conditions. On average, EFPM, EFOC and EFEC for corn straw burned in a residential cooking stove were (3.84 ± 1.02), (0.846 ± 0.895) and (0.391 ± 0.350) g/kg, respectively. EFPM, EFOC and EFEC were found to be positively correlated with each other (p < 0.05), but they were not significantly correlated with the EF of co-emitted CO, suggesting that special attention should be paid to the use of CO as a surrogate for other incomplete combustion pollutants. |
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| Keywords: | indoor corn straw burning emission factor size distribution influencing factor |
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