Mercury removal from coal combustion flue gas by modified fly ash
文献类型：期刊论文
| 作者 | Xu, Wenqing1; Wang, Hairui1,2; Zhu, Tingyu1; Kuang, Junyan1,2; Jing, Pengfei1 |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2013-02-01 |
| 卷号 | 25期号:2页码:393-398 |
| 关键词 | fly ash mercury modified adsorption flue gas |
| 英文摘要 | Fly ash is a potential alternative to activated carbon for mercury adsorption. The effects of physicochemical properties on the mercury adsorption performance of three fly ash samples were investigated. X-ray fluorescence spectroscopy, X-ray photoelectron spectroscopy, and other methods were used to characterize the samples. Results indicate that mercury adsorption on fly ash is primarily physisorption and chemisorption. High specific surface areas and small pore diameters are beneficial to efficient mercury removal. Incompletely burned carbon is also an important factor for the improvement of mercury removal efficiency, in particular. The C M bond, which is formed by the reaction of C and Ti, Si and other elements, may improve mercury oxidation. The samples modified with CuBr2, CuCl2 and FeCl3 showed excellent performance for Hg removal, because the chlorine in metal chlorides acts as an oxidant that promotes the conversion of elemental mercury (Hg-0) into its oxidized form (Hg2+). Cu2+ and Fe3+ can also promote Hg-0 oxidation as catalysts. HCl and O-2 promote the adsorption of Hg by modified fly ash, whereas SO2 inhibits the Hg adsorption because of competitive adsorption for active sites. Fly ash samples modified with CuBr2, CuCl2 and FeCl3 are therefore promising materials for controlling mercury emissions. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | ELEMENTAL MERCURY ; OXIDATION ; CATALYSTS ; SURFACE ; CARBON ; ADSORPTION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000316517600021 |
| 公开日期 | 2015-05-27 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/13520]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Res Ctr Proc Pollut Control, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Wenqing,Wang, Hairui,Zhu, Tingyu,et al. Mercury removal from coal combustion flue gas by modified fly ash[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2013,25(2):393-398. |
| APA | Xu, Wenqing,Wang, Hairui,Zhu, Tingyu,Kuang, Junyan,&Jing, Pengfei.(2013).Mercury removal from coal combustion flue gas by modified fly ash.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,25(2),393-398. |
| MLA | Xu, Wenqing,et al."Mercury removal from coal combustion flue gas by modified fly ash".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 25.2(2013):393-398. |
入库方式： OAI收割
来源：过程工程研究所
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