Distribution and Fate of Mercury in Pulverized Bituminous Coal-Fired Power Plants in Coal Energy-Dominant Huainan City, China
Chen, Bingyu1,2; Liu, Guijian1,2; Sun, Ruoyu1
2016-05-01
发表期刊ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
卷号70期号:4页码:724-733
文章类型Article
摘要A better understanding on the partitioning behavior of mercury (Hg) during coal combustion in large-scale coal-fired power plants is fundamental for drafting Hg-emission control regulations. Two large coal-fired utility boilers, equipped with electrostatic precipitators (ESPs) and a wet flue gas desulfurization (WFGD) system, respectively, in coal energy-dominant Huainan City, China, were selected to investigate the distribution and fate of Hg during coal combustion. In three sampling campaigns, we found that Hg in bottom ash was severely depleted with a relative enrichment (RE) index < 7 %, whereas the RE index for fly ash (9-54 %) was comparatively higher and variable. Extremely high Hg was concentrated in gypsum (a parts per thousand currency sign4500 ng/g), which is produced in the WFGD system. Mass balance calculation shows that the shares of Hg in bottom ash, fly ash, WFGD products (gypsum, effluents, sludge), and stack emissions were < 2, 17-32, 7-22, and 54-82 %, respectively. The Hg-removal efficiencies of ESPs, WFGD, and ESPs + WFGD were 17-32, 10-29, and 36-46 %, respectively. The Hg-emission factor of studied boilers was in a high range of 0.24-0.29 g Hg/t coal. We estimated that Hg emissions in all Huainan coal-fired power plants varied from 1.8 Mg in 2003 to 7.3 Mg in 2010.
WOS标题词Science & Technology ; Life Sciences & Biomedicine
DOI10.1007/s00244-016-0267-7
关键词[WOS]COMBUSTION BY-PRODUCTS ; EMISSIONS ; SPECIATION ; ATMOSPHERE ; POLLUTION ; CHLORINE ; SELENIUM ; ELEMENTS ; IMPACT ; JAPAN
收录类别SCI
语种英语
WOS研究方向Environmental Sciences & Ecology ; Toxicology
WOS类目Environmental Sciences ; Toxicology
WOS记录号WOS:000373646000010
引用统计
被引频次:18[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5751
专题黄土与第四纪地质国家重点实验室(2010~)
作者单位1.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Anhui, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China
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Chen, Bingyu,Liu, Guijian,Sun, Ruoyu. Distribution and Fate of Mercury in Pulverized Bituminous Coal-Fired Power Plants in Coal Energy-Dominant Huainan City, China[J]. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY,2016,70(4):724-733.
APA Chen, Bingyu,Liu, Guijian,&Sun, Ruoyu.(2016).Distribution and Fate of Mercury in Pulverized Bituminous Coal-Fired Power Plants in Coal Energy-Dominant Huainan City, China.ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY,70(4),724-733.
MLA Chen, Bingyu,et al."Distribution and Fate of Mercury in Pulverized Bituminous Coal-Fired Power Plants in Coal Energy-Dominant Huainan City, China".ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 70.4(2016):724-733.
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