在众多二氧化碳封存方法中，矿物捕集因其卓越的安全性和广泛的二氧化碳封存容量而备受认可。本研究提出了一种新颖的方法，通过与地质构造中丰富的富碳、镁和铁矿物的地球化学相互作用来评估二氧化碳的快速矿物碳化作用。本文的方法和研究结果表明，即使在常压下，碳封存也可以在实验室条件下数小时内成功实施，这有效地弥补了文献中矿物碳化实验研究尚未得到广泛探索的重大空白。
由于储层岩石中的碳矿化可能需要数千年的时间，因此这种类型的二氧化碳储存在文献中几乎被忽视，除了少数研究，这些研究的实验主要重点仅仅是调查由于二氧化碳注入而导致的岩石物理和力学性质的变化。
本研究提出了一种从不同角度研究碳矿化的新方法，包括定量评估大多数地层岩石成分中不同富钙和富镁矿物在不同实验条件下（例如温度、升温速率以及水相中总溶解固体 (TDS) 对矿物表面二氧化碳储存的影响）对碳吸收的影响。此外，除了评估碳吸收值外，还广泛研究了二氧化碳暴露对含和不含水相的矿物样品表面孔隙空间变化的贡献。
经过广泛的文献综述，选择了四种富含镁、钙和铁的矿物在不同条件下进行二氧化碳暴露：橄榄石、白云石、石膏和磁铁矿。
Among various CO2 sequestration methods, mineral trapping is recognized for its superior safety and extensive CO2-storage capacity. This study presents a novel methodology for assessing the rapid mineral carbonation of CO2 through geochemical interactions with carbon-, magnesium-, and iron-rich minerals abundant in geological formations. The approach and findings of the complete paper reveal that carbon storage can be successfully implemented in a matter of hours under laboratory conditions even at atmospheric pressure, effectively bridging a significant gap in the literature where experimental investigation of mineral carbonation has not been extensively explored.
Because carbon mineralization in reservoir rocks might take thousands of years, this type of CO2 storage has been almost neglected in the literature except for a few studies where the primary focus of the experiments was merely the investigation of the alterations in the rock petrophysical and mechanical properties because of CO2 injection.
This study presents a novel approach to investigate carbon mineralization from different perspectives, including quantitative evaluation of carbon uptake by different calcium- and magnesium-rich minerals contained in the composition of most formation rocks at various experimental conditions such as temperature, heating rate, and influence of total dissolved solids (TDS) in the aqueous phase on CO2 storage on the surface of the mineral. Furthermore, apart from evaluating the carbon-uptake values, the contribution of CO2 exposure to the alteration of the surface void space of the mineral sample with and without an aqueous phase has been studied extensively.
After an extensive literature review, four magnesium-, calcium-, and iron-rich minerals were selected for CO2 exposure under various conditions: olivine, dolomite, gypsum, and magnetite.
