Mercury pollution is a cause for concern that requires global action. The most demonstrated and commercially available technology for mercury control is pulverized activated carbon injection. During oxy-coal combustion, the elevated concentrations of SOx, the moisture level in the flue gas, and the recirculation streams may affect the performance of activated carbons as mercury sorbents. This works evaluates mercury oxidation and capture using impregnated-activated carbons. In this study a novel aspect is considered by the application of a novel thermal desorption procedure for mercury species identification and the elucidation of the interaction mechanism. The results show oxidation efficiencies ranging from 85% to 96%. The mercury is partially retained in the solid by chemical adsorption. The formation of new mercury species HgS, HgI₂, and HgO by the interaction was established.

中文翻译：

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含氧燃料燃烧条件下汞与改性活性炭的相互作用

汞污染令人担忧，需要采取全球行动。汞控制的最证明和最可商购的技术是粉状活性炭注射剂。在氧气煤燃烧期间，SOx的浓度升高，烟道气中的水分含量以及再循环流可能会影响活性炭作为汞吸附剂的性能。这项工作评估了汞的氧化和使用浸渍活性炭的捕集。在这项研究中，通过应用新颖的热脱附程序来鉴定汞种类和阐明相互作用机理，可以考虑一个新颖的方面。结果显示氧化效率为85％至96％。汞通过化学吸附部分保留在固体中。形成新的汞物种HgS，HgI_{如图2所示}，通过相互作用建立了HgO。