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首页> 外文期刊>Environmental Science & Technology >Selenium Functionalized Metal-Organic Framework MIL-101 for Efficient and Permanent Sequestration of Mercury
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Selenium Functionalized Metal-Organic Framework MIL-101 for Efficient and Permanent Sequestration of Mercury

机译：硒功能化金属有机框架，MIL-101，用于持久有效地隔离汞

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摘要

Abatement of mercury emission from coal-fired power plants remains a serious task for public health and environmental societies. Selenium functionalized metal-organic framework MIL-101 (Se/MIL-101) was prepared for mercury removal from power plants. The Se/MIL-101 exhibited a remarkable mercury adsorption capacity of 148.19 mg.g(-1), which was about 154 to 705 times larger than that of commercial activated carbons exclusively applied for mercury removal from power plants. The initial mercury adsorption rate for Se/MIL-101 reached up to 44.8 mu g.g(-1).min(-1), which was 89 to 1659-fold higher than those of mercury sorbents reported in the literature. The Se/MIL-101 maintained an excellent mercury adsorption stability under simulated flue gas atmosphere containing SO2, NO, and H2O. Gaseous elemental mercury (Hg-0) converted on the Se/MIL-101 to stable and water-insoluble mercury selenide (HgSe), which guaranteed minimum re-emission even sequestration of mercury. Moreover, the mercury-laden Se/MIL-101 could also immobilize mercury in gypsum and efficiently capture mercury ions from desulfurization effluent to an undetectable level (0.0035 mu g.L-1). With these advantages, Se/MIL-101 appears to be a promising material for efficient and permanent sequestration of mercury from power plants.
机译：减少燃煤电厂的汞排放对于公共卫生和环境社会仍然是一项艰巨的任务。制备了硒功能化的金属有机框架MIL-101（Se / MIL-101），用于去除发电厂中的汞。 Se / MIL-101的汞吸附容量为148.19 mg.g（-1），比专门用于电厂除汞的商业活性炭的吸附容量大154至705倍。 Se / MIL-101的初始汞吸附率达到44.8μg.g（-1）.min（-1），比文献中报道的汞吸附剂高89至1659倍。 Se / MIL-101在包含SO2，NO和H2O的模拟烟气气氛中保持了优异的汞吸附稳定性。气态元素汞（Hg-0）在Se / MIL-101上转化为稳定的水不溶性硒化汞（HgSe），即使汞被隔离，也能保证最小的再排放。此外，含汞的Se / MIL-101还可以将石膏中的汞固定化，并有效地将脱硫废水中的汞离子捕获到无法检测的水平（<0.0035μgL-1）。具有这些优点，Se / MIL-101似乎是一种有效且永久地隔离发电厂中汞的有前途的材料。

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  • 来源
    《Environmental Science & Technology》 |2019年第4期|2260-2268|共9页
  • 作者

    Yang Jianping; Zhu Wenbing; Qu Wenqi; Yang Zequn; Wang Jun; Zhang Mingguang; Li Hailong;

  • 作者单位

    Cent S Univ, Sch Energy Sci & Engn, Changsha 410083, Hunan, Peoples R China;

    Cent S Univ, Sch Energy Sci & Engn, Changsha 410083, Hunan, Peoples R China;

    Cent S Univ, Sch Energy Sci & Engn, Changsha 410083, Hunan, Peoples R China;

    Univ Hong Kong, Dept Civil Engn, Hong Kong, Peoples R China;

    Univ Oklahoma, Hlth Sci Ctr, Hudson Coll Publ Hlth, Dept Occupat & Environm Hlth, Oklahoma City, OK 73126 USA;

    Cent S Univ, Sch Energy Sci & Engn, Changsha 410083, Hunan, Peoples R China;

    Cent S Univ, Sch Energy Sci & Engn, Changsha 410083, Hunan, Peoples R China;

  • 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);美国《化学文摘》(CA);
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