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Tytuł pozycji:

Different Design Strategies for Metal Sulfide Sorbents to Capture Low Concentrations of Gaseous Hg 0 in Coal-Fired Flue Gas and High Concentrations of Gaseous Hg 0 in Smelting Flue Gas.

Tytuł:
Different Design Strategies for Metal Sulfide Sorbents to Capture Low Concentrations of Gaseous Hg in Smelting Flue Gas.
Autorzy:
Wang C; School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, P. R. China.
Mei J; School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, P. R. China.
Hong Q; School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, P. R. China.
Xie F; School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, P. R. China.
Ding Z; School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, P. R. China.
Ma C; School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, P. R. China.
Yang S; School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, P. R. China.
Źródło:
Environmental science & technology [Environ Sci Technol] 2021 May 18; Vol. 55 (10), pp. 7094-7101. Date of Electronic Publication: 2021 May 06.
Typ publikacji:
Journal Article; Research Support, Non-U.S. Gov't
Język:
English
Imprint Name(s):
Publication: Washington DC : American Chemical Society
Original Publication: Easton, Pa. : American Chemical Society, c1967-
MeSH Terms:
Gases*
Mercury*
Adsorption ; Coal ; Power Plants ; Sulfides
Contributed Indexing:
Keywords: Hg0 adsorption; Hg0 concentration; adsorption kinetics; affinity to Hg0; metal sulfide sorbents; structure−activity relationship
Substance Nomenclature:
0 (Coal)
0 (Gases)
0 (Sulfides)
FXS1BY2PGL (Mercury)
Entry Date(s):
Date Created: 20210506 Date Completed: 20210701 Latest Revision: 20210701
Update Code:
20240104
DOI:
10.1021/acs.est.1c01631
PMID:
33955737
Czasopismo naukowe
Capturing gaseous Hg 0 using regenerable metal sulfides is a promising technology to recover gaseous Hg 0 from both coal-fired flue gas (CFG) and smelting flue gas (SFG) for the centralized control. Gaseous Hg 0 concentration in SFG is 2-3 orders of magnitude higher than that in CFG; therefore, the design strategy of metal sulfides for capturing gaseous Hg 0 from CFG is quite different from that from SGF. In this work, the structure-activity relationship of metal sulfides to capture Hg 0 was investigated according to the remarkable difference in MoO 3 loading on sulfureted FeTiO x to capture low/high concentrations of gaseous Hg 0 . The rate of Hg 0 adsorption onto metal sulfides was mainly related to the amounts of adsorption sites and S 2 2- on the surface, the affinity of adsorption sites to gaseous Hg 0 , and the gaseous Hg 0 concentration. Meanwhile, the capacity for Hg 0 adsorption was approximately equal to the less of the amount of adsorption sites and S 2 2- on the surface. Furthermore, capturing low concentrations of gaseous Hg 0 from CFG required the metal sulfide sorbents having more adsorption sites with strong affinity to gaseous Hg 0 , while capturing high concentrations of gaseous Hg 0 from SFG required the sorbents with enough adsorption sites.

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