金属硒化物吸附脱除烟气中的汞：综述,Journal of Environmental Sciences

近几十年来，汞 (Hg) 污染一直是全球关注的问题，由于其累积毒性、持久性和在大气中的迁移，对整个生态系统和人类健康构成重大威胁。汞与硒之间的强烈相互作用为研究工业烟气污染物脱汞开辟了一个新领域。矿物硒化合物除了具有捕汞性能好、二次污染小等优点外，最值得一提的是再生温度相对较低，吸附剂再生能耗低，从而降低了利用成本，实现了汞资源的回收利用。本文综述了矿物硒化合物在烟气脱汞方面的最新进展，详细介绍了在脱汞领域研究的不同类型的矿物硒化合物，综述了各种矿物硒化合物吸附剂对汞的吸附性能以及烟气成分如反应温度、风速等因素的影响，并总结了不同逃逸形式的硒物种的吸附机理。根据目前的研究进展，未来的研究应侧重于经济性能以及不同载体和尺寸的吸附剂对Hg脱除的性能 并总结了不同逃逸形式的硒物种的吸附机理。根据目前的研究进展，未来的研究应侧重于经济性能以及不同载体和尺寸的吸附剂对Hg脱除的性能 并总结了不同逃逸形式的硒物种的吸附机理。根据目前的研究进展，未来的研究应侧重于经济性能以及不同载体和尺寸的吸附剂对Hg脱除的性能0以及在实际工业应用中气体-颗粒流动特性和气相传质与 Hg 0去除性能的相关性。此外，定量区分Hg 0的氧化和吸附仍然是一个挑战。

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Mercury (Hg) pollution has been a global concern in recent decades, posing a significant threat to entire ecosystems and human health due to its cumulative toxicity, persistence, and transport in the atmosphere. The intense interaction between mercury and selenium has opened up a new field for studying mercury removal from industrial flue gas pollutants. Besides the advantages of good Hg° capture performance and low secondary pollution of the mineral selenium compounds, the most noteworthy is the relatively low regeneration temperature, allowing adsorbent regeneration with low energy consumption, thus reducing the utilization cost and enabling recovery of mercury resources. This paper reviews the recent progress of mineral selenium compounds in flue gas mercury removal, introduces in detail the different types of mineral selenium compounds studied in the field of mercury removal, reviews the adsorption performance of various mineral selenium compounds adsorbents on mercury and the influence of flue gas components, such as reaction temperature, air velocity, and other factors, and summarizes the adsorption mechanism of different fugitive forms of selenium species. Based on the current research progress, future studies should focus on the economic performance and the performance of different carriers and sizes of adsorbents for the removal of Hg0 and the correlation between the gas-particle flow characteristics and gas phase mass transfer with the performance of Hg0 removal in practical industrial applications. In addition, it remains a challenge to distinguish the oxidation and adsorption of Hg0 quantitatively.