| Geochemistry of sulfur and hazardous trace elements in coals and its bearing on human health |
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| 作者姓名： | Chenlin CHOU |
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| 作者单位： | [1]Illinois State Geological Survey （Emeritus）, Champaign, IL, USA [2]Mailing address： 3007 Valley Brook Drive, Champaign, IL 61822, USA; |
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| 摘 要： | Hazardous air pollutants, including compounds of sulfur and toxic trace elements, are emitted during coal combustion. Geochemical studies of these constituents in coals provide information about their species, regional distribution and origins. The data are useful in understanding the cause and scope of human health problems related to these hazardous elements and in designing preventive or remedial measures. Sulfur in coal is a problem because sulfur dioxide emitted during coal combustion is a main source of acid rain. The sulfur isotopic evidence shows that sulfur in low-sulfur coal is derived primarily from parent plant materials. Sulfur enrichment in medium- and high-sulfur coals is caused by the sulfate in seawater that flooded the peat swamp during coal formation. The sulfur content of a coal is controlled primarily by the depositional environment of coal seams. Only pyritic sulfur can be removed by physical coal cleaning processes （coal preparation）. Sulfur dioxide emission can be reduced using clean coal technologies, such as flue-gas desulfurization, fluidized-bed combustion, and integrated gasification and combined cycle.
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| 关 键 词： | 地球化学 煤 硫磺 微量元素 |
Geochemistry of sulfur and hazardous trace elements in coals and its bearing on human health |
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| Chenlin CHOU.Geochemistry of sulfur and hazardous trace elements in coals and its bearing on human health[J].Chinese Journal of Geochemistry,2006,25(B08):82-82. |
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| Abstract: | |
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| Keywords: | geochemistry sulfur coal human health |
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