基于煤炭飞灰的集成CO2捕获矿化材料的研究:制备方法,修改机制和CO2矿化性质
Yanhui Liu1, Jingwei Li1, Zhonghua Zhao2
1Shandong Engineering Laboratory for Solid Waste Green Materials, National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology of Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering, Shandong University, Jinan 250014, China.
The Science of the total environment
|October 29, 2024
概括
这项研究开发了从煤炭飞灰 (CFA) 获得的新材料,以有效地捕获和矿化二氧化碳 (CO2). 这些集成的二氧化碳捕获-矿化材料 (ICCM) 为减少二氧化碳排放和利用工业废物提供了可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 化学工程是化学工程的重要组成部分.
背景情况:
- 工业固体废物,如煤炭飞灰 (CFA),为二氧化碳矿化和资源利用提供了重大机会.
- 使用CFA的直接CO2矿化通常是低效的,需要开发先进的材料.
- 有效的二氧化碳捕获和矿化技术对于碳捕获,利用和储存至关重要.
研究的目的:
- 从改性煤飞灰 (CFA) 开发新的综合二氧化碳捕获矿化材料 (ICCM).
- 调查准备好的ICCM的二氧化碳捕获和现场矿化能力.
- 优化ICCM的准备和性能,以提高二氧化碳的封存.
主要方法:
- 修改CFA以激活Al和Si,形成具有高表面积的酸 (AFt) 和酸水合物 (C-S-H).
- 在不同CFA含量,矿物吸引剂 (MA) 和性物质度下,ICCM物理化学性质的表征.
- 坐标实验,以确定烟气温度,湿度和CFA含量对二氧化碳捕获和矿化的影响.
主要成果:
- 优化的ICCM呈现出类似花朵的集群结构,增强了二氧化碳捕获和现场矿化.
- 湿度被确定为影响二氧化碳捕获和矿化效率的主要因素.
- 在最佳条件下,每克ICCM可以吸附和矿化48毫克的二氧化碳,形成纳米尺寸的石和石.
结论:
- 开发的ICCM代表了一种基于固体废物的新型绿色材料,用于有效的二氧化碳封存.
- 该研究在CCUS框架内为推进CO2矿化技术提供理论支持.
- 这种方法促进了可持续的工业废物管理,并有助于减轻二氧化碳排放.
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