Emission factors of carbon monoxide and size-resolved aerosols from biofuel combustion.
Emission factors of carbon monoxide and size-resolved aerosols from biofuel combustion.
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DOI：
10.1021/es001603d
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发表时间：
2001-04
影响因子：
11.4
通讯作者：
Chandra Venkataraman;G. Uma Maheswara Rao
中科院分区：
文献类型：
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作者：
Chandra Venkataraman;G. Uma Maheswara Rao
这项研究报告了在印度传统炉子和改进炉子中燃烧木材、粪饼和生物燃料型煤所产生的一氧化碳和尺寸分辨气溶胶的排放系数。木头是最清洁的燃烧燃料，粪饼的CO排放量较高，粪饼和煤球燃料的颗粒物都较高。粪饼的燃烧，特别是在改进的金属炉子中燃烧，导致极高的污染物排放。相反，应该将厌氧粪便消化产生的沼气作为一种烹饪燃料加以推广，以保护公众健康。污染物排放量随着炉子热效率的提高而增加，说明改进后炉子热效率的提高主要来自于设计特点，导致换热增加，而不是燃烧效率。与传统炉灶相比，改进炉灶的木材燃烧污染物排放量低于传统炉灶，而型煤和粪饼的排放量与传统炉灶相似。炉子的设计需要在多种燃料中都有良好的排放性能。测量了空气动力学质量中值直径为0.5-0.8微米的生物燃料燃烧的单峰气溶胶尺寸分布，大约是化石燃料燃烧(如柴油)的10倍，这对肺沉积和健康风险具有潜在的影响。
This study reports emission factors of carbon monoxide and size-resolved aerosols from combustion of wood, dung cake, and biofuel briquette in traditional and improved stoves in India. Wood was the cleanest burning fuel, with higher emissions of CO from dung cake and particulate matter from both dung cake and briquette fuels. Combustion of dung cake, especially in an improved metal stove, resulted in extremely high pollutant emissions. Instead, biogas from anaerobic dung digestion should be promoted as a cooking fuel for public health protection. Pollutant emissions increased with increasing stove thermal efficiency, implying that thermal efficiency enhancement in the improved stoves was mainly from design features leading to increased heat transfer but not combustion efficiency. Compared to the traditional stove, the improved stoves resulted in the lower pollutant emissions on a kW h-1 basis from wood combustion but in similar emissions from briquette and dung cake. Stove designs are needed with good emissions performance across multiple fuels. Unimodal aerosol size distributions were measured from biofuel combustion with mass median aerodynamic diameters of 0.5-0.8 micron, about a factor of 10 larger than those from fossil fuel combustion (e.g. diesel), with potential implications for lung deposition and health risk.