The effects of leaching parameters on the composition of the adsorbent derived from steel slag is studied in this study, and the CO₂ capture characteristics and cyclic stability of the derived adsorbent under the effect of the element composition are also investigated. The results show that well- developed pore structure of derived adsorbents are obtained compared with the raw steel slag. The calcium content in the adsorbent significantly increases after leaching, improving the CO₂ capture ability of the derived adsorbents. The Fe, Si, and Al contents decrease, while the Mg and Mn contents change little after leaching, which increases the cyclic stability of the derived adsorbent compared to that of analytically pure CaO. Under the optimized working conditions, the initial CO₂ capture ability of the derived adsorbent is 0.61 g_CO2/g-sorbent. The deactivation ratio of the sample after 20 cycles is 52.46%, showing good performance compared to that of analytically pure CaO. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd.

中文翻译：

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浸出参数对钢渣吸附剂组成及其 CO2 捕集特性的影响

本研究研究了浸出参数对钢渣衍生吸附剂组成的影响，并研究了在元素组成影响下衍生吸附剂的CO ₂捕获特性和循环稳定性。结果表明，与生钢渣相比，衍生吸附剂的孔结构非常发达。浸出后吸附剂中的钙含量显着增加，提高了衍生吸附剂的CO ₂捕获能力。Fe、Si 和 Al 含量降低，而 Mg 和 Mn 含量在浸出后变化很小，与分析纯 CaO 相比，这增加了衍生吸附剂的循环稳定性。在优化的工况下，初始 CO₂衍生吸附剂的捕获能力为0.61 g _CO2 /g-吸附剂。样品在 20 个循环后的失活率为 52.46%，与分析纯 CaO 相比表现出良好的性能。© 2021 化学工业协会和 John Wiley & Sons, Ltd.