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Dong YE


Hai-ning WANG


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Journal of Zhejiang University SCIENCE A 2022 Vol.23 No.7 P.505-526


Review of elemental mercury (Hg0) removal by CuO-based materials

Author(s):  Dong YE, Xiao-xiang WANG, Run-xian WANG, Xin LIU, Hui LIU, Hai-ning WANG

Affiliation(s):  College of Quality & Safety Engineering, China Jiliang University, Hangzhou 310018, China; more

Corresponding email(s):   Richard32@126.com, whnfyy@163.com

Key Words:  Hg0 capture capability, CuO-based materials, Hg0 removal mechanisms, Gas components, Simultaneous removal of multiple pollutants

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Dong YE, Xiao-xiang WANG, Run-xian WANG, Xin LIU, Hui LIU, Hai-ning WANG. Review of elemental mercury (Hg0) removal by CuO-based materials[J]. Journal of Zhejiang University Science A, 2022, 23(7): 505-526.

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author="Dong YE, Xiao-xiang WANG, Run-xian WANG, Xin LIU, Hui LIU, Hai-ning WANG",
journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Review of elemental mercury (Hg0) removal by CuO-based materials
%A Dong YE
%A Xiao-xiang WANG
%A Run-xian WANG
%A Xin LIU
%A Hui LIU
%A Hai-ning WANG
%J Journal of Zhejiang University SCIENCE A
%V 23
%N 7
%P 505-526
%@ 1673-565X
%D 2022
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A2100627

T1 - Review of elemental mercury (Hg0) removal by CuO-based materials
A1 - Dong YE
A1 - Xiao-xiang WANG
A1 - Run-xian WANG
A1 - Xin LIU
A1 - Hui LIU
A1 - Hai-ning WANG
J0 - Journal of Zhejiang University Science A
VL - 23
IS - 7
SP - 505
EP - 526
%@ 1673-565X
Y1 - 2022
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A2100627

Mercury emission has become a great environmental concern because of its high toxicity, bioaccumulation, and persistence. Adsorption is an effective method to remove Hg0 from coal-fired flue gas, with adsorbents playing a dominant role. Extensive investigations have been conducted on the use of cuO-based materials for Hg0 removal, and some fruitful results have been obtained. In this review, we summarize advances in the application of cuO-based materials for Hg0 capture. Firstly, the fundamentals of CuO, including its crystal information and synthesis methods, are introduced. Then, the Hg0 removal capability of some typical CuO-based adsorbents is discussed. Considering that coal-fired flue gas also contains a certain amount of NO, SO2, H2O, NH3, and HCl, the impacts of these species on adsorbent Hg0 removal efficiency are summarized next. By generalizing the mechanisms dominating the Hg0 removal process, the rate-determining step and the key intermediates can be discovered. Apart from Hg0, some other air pollutants, such as CO, NOx, and volatile organic compounds (VOCs), account for a certain portion of flue gas. In view of their similar abatement mechanisms, simultaneous removal of Hg0 and other air pollutants has become a hot topic in the environmental field. Considering the Hg0 re-emission phenomena in wet flue gas desulfurization (WFGD), mercury capture performance under different conditions in this device is discussed. Finally, we conclude that new adsorbents suitable for long-term operation in coal-fired flue gas should be developed to realize the effective reduction of mercury emissions.




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