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Removal of gas-phase Hg-0 by Mn/montmorillonite K 10
Wu, Yinghong1,2; Xu, Wenqing1; Yang, Yang1,2; Shao, Mingpan1; Zhu, Tingyu1; Tong, Li1
2016
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume6Issue:106Pages:104294-104302
Abstract

Mn/montmorillonite K 10 (Mn/MK10) prepared by impregnation method was studied to remove Hg-0 in simulated coal-fired flue gas. The samples were characterized by Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and temperature-programmed desorption (TPD). Effects of manganese loading value, reaction temperature and flue gas components on Hg-0 removal efficiency were investigated. The results indicated that 4% Mn/MK10 was the optimal sample with outstanding Hg-0 removal efficiency over the temperature range of 100-400 degrees C. The characteristic analysis demonstrated that amorphous MnO2 and active oxygen were crucial for Hg-0 removal. Besides, NO had a promoting effect due to the formation of Hg(NO3)(2). The addition of only 5 ppm HCl led to excellent Hg-0 removal performance as HCl enhanced Hg-0 conversion to HgClx. The inhibition effect of SO2 could be counteracted in the presence of NO and/or HCl. The Hg-0 removal capacity showed a relative decrease when H2O (g) was added to simulated flue gas. Moreover, Hg-0 removal performance was maintained at 80-99% (NO/SO2 +/- 0.26-1.71) in simulated flue gas without HCl, which appeared to be promising in industrial application.

SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c6ra20457k
Indexed BySCI
Language英语
WOS KeywordCOMBUSTION FLUE-GAS ; ELEMENTAL MERCURY OXIDATION ; SELECTIVE CATALYTIC-REDUCTION ; ACTIVATED CARBON ; LOW-TEMPERATURE ; MODIFIED MONTMORILLONITE ; SOLID-SOLUTIONS ; SCR CATALYST ; MIXED-OXIDE ; COAL
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding OrganizationNational Basic Research Program (973) of China(2013CB430005) ; Special Research Funding for Public Benefit Industries from the National Ministry of Environmental Protection(201309018)
WOS IDWOS:000388111900050
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21666
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wu, Yinghong,Xu, Wenqing,Yang, Yang,et al. Removal of gas-phase Hg-0 by Mn/montmorillonite K 10[J]. RSC ADVANCES,2016,6(106):104294-104302.
APA Wu, Yinghong,Xu, Wenqing,Yang, Yang,Shao, Mingpan,Zhu, Tingyu,&Tong, Li.(2016).Removal of gas-phase Hg-0 by Mn/montmorillonite K 10.RSC ADVANCES,6(106),104294-104302.
MLA Wu, Yinghong,et al."Removal of gas-phase Hg-0 by Mn/montmorillonite K 10".RSC ADVANCES 6.106(2016):104294-104302.
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