The existing solvent-mediated CO₂ capture process is energy-intensive as a result of the high-temperature requirement for solvent regeneration. Therefore, improvement of solvent systems for optimized and low-energy-intensive CO₂ capture and desorption is of enormous interest. In this regard, we report a novel matrix composed of ZnO/Fe₂O₃-encapsulated mesoporous silica-tethered thermostable carbonic anhydrase (CA) (designated as [email protected]fn-Zn/Fe/MS). The enzyme-coupled matrix was used for efficient post-combustion CO₂ capture and low-energy-intensive desorption. It was observed that the use of [email protected]fn-Zn/Fe/MS (0.5 wt %) in 30% monoethanolamine (MEA) enhances the CO₂ uptake to 0.82 mol/mol of solvent and the regeneration efficiency by 2.6 times compared to neat MEA at 30 wt %. The enzyme-coupled matrix is stable over a broad range of pH and can be used for several cycles. The development adds value to improve conventional amine-based CO₂ scrubbing technology.

中文翻译：

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单乙醇胺中生物催化加速燃烧后CO _2的捕集和汽提

由于溶剂再生的高温需求，现有的溶剂介导的CO ₂捕集过程需要大量能源。因此，对用于优化和低能耗的CO ₂捕集和解吸的溶剂系统的改进引起了极大的兴趣。在这方面，我们报告了由ZnO / Fe ₂ O ₃包封的介孔二氧化硅束缚的热稳定碳酸酐酶（CA）（称为[电子邮件保护] fn -Zn / Fe / MS）组成的新型基质。酶偶联的基质用于有效的燃烧后CO ₂捕集和低能耗的解吸。据观察，[电子邮件保护] fn的使用与30％的纯MEA相比，在30％的单乙醇胺（MEA）中的-Zn / Fe / MS（0.5 wt％）可将CO ₂吸收提高至0.82 mol / mol溶剂，并将再生效率提高2.6倍。酶偶联基质在很宽的pH范围内都稳定，可用于多个循环。该开发增加了改进常规胺基CO ₂洗涤技术的价值。