煤炭矩阵对二氧化碳吸附和排放的反应:对可持续采矿和碳封存的影响
Emad Ansari Ardehjani1, Farhang Sereshki2, Mohammad Ataei2
1Faculty of Mining, Petroleum and Geophysics, Shahrood University of Technology, Shahrood, Iran. emadansari@shahroodut.ac.ir.
Scientific reports
|December 8, 2025
概括
这项研究表明,煤炭可以很好地保留二氧化碳 (CO2),即使是长期的,这使得它对矿山中的碳捕获有希望. 最佳的和时间和压力对煤炭变形的影响是有效储存二氧化碳的关键.
科学领域:
- 地质工程是地质工程.
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 煤矿为碳捕获提供了潜力.
- 了解二氧化碳暴露下的煤炭矩阵行为对于安全储存至关重要.
- 煤炭的长期气体排放动态并未得到充分理解.
研究的目的:
- 调查煤炭矩阵对长期二氧化碳吸附和排放的反应.
- 评估废弃煤矿在可持续碳捕获方面的潜力.
- 为了确定最佳的二氧化碳和时间和压力对煤炭变形的影响.
主要方法:
- 采用了一种新的三轴测试装置,用于煤样.
- 在没有真空干预的情况下模拟了长期的二氧化碳排放.
- 在各种压力 (15,30,35bar) 和持续时间下进行了CO2和.
主要成果:
- 煤炭表现出强大的二氧化碳保留,吸附度随着压力增加而增加.
- 较高的压力增强了变形,但由于限制效应,不一定是吸附.
- 在二氧化碳排放和循环测试后,观察到不可逆转的结构变化和降低的吸附能力.
结论:
- 没有真空的长期二氧化碳排放研究对于现实的封存评估至关重要.
- 对于不同的压力范围,建议采用最佳和时间.
- 调查结果为提高煤矿碳捕获和储存技术提供了见解.
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