固废源CaO基CO2捕集材料的制备与捕集性能研究进展

CO₂捕集技术是当前应对全球气候变化、缓解温室效应的重要途径。利用含钙固体废弃物制备高效CaO基CO₂捕集材料有利于实现固废资源高值化利用、以废治废和清洁生产，具有重要的环境效益、经济效益和社会效益。基于固废源高效廉价CaO基CO₂捕集材料的良好应用前景，本文介绍了工业废渣、生物质和其他含钙固体废弃物的产生与资源化利用现状，综述了CaO基吸附剂的捕集原理、碳酸化动力学过程和CO₂捕集性能，对比了以不同含钙固体废弃物为前驱体制备CaO基吸附剂的吸附-脱附循环性能和不同改性方法对其吸附稳定性的影响，从经济角度分析了固废源CaO基吸附剂在钢铁厂、燃煤电厂和生物制氢中的应用潜力，展望了固废源CaO基CO₂捕集材料的应用前景和发展方向。该文旨在为固废源CaO基吸附剂前驱体的选择、吸附性能的提高和固废吸附材料的工业应用提供帮助。

Research Progress on Preparation and Capture Performance of CaO-Based CO2 Capture Materials from Solid Wastes

CO₂ capture technology is an important way to deal with global climate change and mitigate the greenhouse effect. The preparation of efficient CaO-based CO₂ capture materials from calcium-containing solid wastes is conducive to the realization of high-value utilization of solid wastes, waste treatment and clean production, which has important environmental benefits, economic benefits, and social benefits. Based on the good application prospects of efficient and cheap CaO-based CO₂ capture materials from solid wastes, the production and resource utilization of industrial waste residues, biomass and other calcium-containing solid wastes were introduced in this paper. The capture principle, carbonation kinetic process and CO₂ capture performance of CaO-based adsorbents were summarized. The adsorption-desorption cycle performance of CaO-based adsorbents prepared with different calcium-containing solid wastes as precursors and the influences of different modification methods on the adsorption stability of CaO-based adsorbents were compared. The potential applications of CaO-based adsorbents from solid waste in steel plants, coal-fired power plants and bio-hydrogen production were analyzed from an economic point of view. The application prospect and development direction of CaO-based CO₂ capture materials from solid wastes were prospected. The purpose of this paper is to provide help for the selection of CaO-based adsorbent precursor from solid wastes, the improvement of adsorption performance and the industrial application of solid waste adsorbents.