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在基于MSWIFA的碳捕集材料中,矿化和毛细血管捕获之间的协同机制

Guosheng Fu¹, Heping Xie¹, Ying Teng¹

¹State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, Shenzhen University, Shenzhen, 518060, China; College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, 518060, China.

Environmental research

|February 27, 2026

概括

城市固体废物焚烧飞灰 (MSWIFA) 可以通过增强回填物质的多孔性和Ca2+含量来封存CO2. 这项研究揭示了协同碳化和毛细血管捕获机制,提高了二氧化碳储存能力.

科学领域:

环境科学环境科学
地质化学地质化学
材料科学材料科学材料科学

背景情况:

城市固体废物焚烧飞灰 (MSWIFA) 是一个不断增长的城市废物流.
通过自发泡来捕捉二氧化碳的MSWIFA的潜力尚未得到充分探索.
MSWIFA可以提高填充材料的多孔性和Ca2+含量,提高储存能力.

研究的目的:

研究基于MSWIFA的回填物中二氧化碳矿化和毛细血管捕获的结合机制.
为了阐明环境条件 (温度,压力) 对MSWIFA矿化的影响.
了解矿物成分,孔隙结构和表面特性如何影响水力动力学行为和二氧化碳储存.

主要方法:

在模拟的goaf条件下,研究了MSWIFA回填处的CO2矿化和毛细血管捕获.
分析了矿物成分,孔隙结构和表面特性对水力动力学行为的影响.
研究了高温和高压对矿物转化和孔隙结构的作用.

主要成果:

矿物质碳化和毛细血管捕获之间的强烈协同效应显著增强了二氧化碳的储存.
高温和高压加快了酸水合物 (C-S-H) 的分解,促进了碳酸盐矿物质的形成.
矿物转化改变了表面特性和毛孔结构,形成细毛孔和大毛孔段,优化了二氧化碳的封存.

结论:

基于MSWIFA的回填材料为增强二氧化碳封存提供了一个有希望的策略.
优化表面特性和孔隙结构对于最大限度地提高二氧化碳储存效率至关重要.
这项研究为高价值的危险废物利用提供了一种新的方法,并有助于温室气体减排.

关键词:

碳化合物2) 毛细血管的捕获碳的地理封存碳的地理封存.这是一种重金属,重金属.矿物质碳化矿物质的碳化.城市固体废物城市固体废物

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