Gaseous Elemental Mercury Adsorption to Alcohol-Enhanced Molybdenum Disulfide: Kinetics and Mechanism

Yongpeng Ma; Wentao Gu; Xiaojing ZhangZhuangzhuang LvYunxia MaYichen HuangYakun LiHongzhong Zhang

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Gaseous Elemental Mercury Adsorption to Alcohol-Enhanced Molybdenum Disulfide: Kinetics and Mechanism

机译：Gaseous Elemental Mercury Adsorption to Alcohol-Enhanced Molybdenum Disulfide: Kinetics and Mechanism

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Heterogeneous absorption is a potential technology for Hg~0 contamination control in flue gas, in which the gasliquidmass transfer of Hg~0 (GLMT-Hg~0) is a key problem that needs to be solved. In this work, an alcoholenhancedMoS_2/H_2O system was proposed and investigated for Hg~0 removal. The results showed that addingalcohol can improve Hg~0 removal efficiency. Especially, adding 60mM butanol can reach 94 of Hg~0 removalefficiency. In addition, the effect of adding long carbon chains and monohydric alcohols is better than addingshort carbon chains and polyhydric alcohols. The kinetics of Hg~0 removal revealed that adding butanol increasesE and K_(G(Hg~0))/k_(G(Hg~0)), which can enhance GLMT-Hg~0. The fate of Hg~0 and the mechanism of itsremoval were revealed as Hg~0 first being oxidized by Mo~(4+) to form a Hg-Mo complex, which reacts with anadjacent S site to form stable HgS. Most of the removed Hg was absorbed on MoS2, which is more favorable tobe separated from the solution for recycle and reuse.

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来源
《Environmental engineering science》 |2023年第5期|196-206|共11页
作者
Yongpeng Ma; Wentao Gu; Xiaojing ZhangZhuangzhuang LvYunxia MaYichen HuangYakun LiHongzhong Zhang;
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作者单位

Henan Province Engineering Research Center of Catalysis and Separation of Cyclohexanol, School of Material and Chemical Engineering,Zhengzhou University of Light Industry, Zhengzhou, China;

Henan Ecological Environment Monitoring and Safety Center, Henan Province Department of Environmental Protection, Zhengzhou, China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种英语
中图分类
关键词
alcohol; flue gas; gaseous elemental mercury; kinetics; molybdenum disulfide;

Gaseous Elemental Mercury Adsorption to Alcohol-Enhanced Molybdenum Disulfide: Kinetics and Mechanism

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