Reactivity of Iron Bearing Minerals and CO<sub>2</sub> Sequestration: A Multi-Â­Disciplinary and Experimental Approach

doi:10.2172/1166022

GSTDTAP > 地球科学

DOI	10.2172/1166022
报告编号	DOE-SBU--4633
来源ID	OSTI ID: 1166022
	Reactivity of Iron Bearing Minerals and CO₂ Sequestration: A Multi-ÂDisciplinary and Experimental Approach
	Schoonen, Martin A.
	2014-12-22
出版年	2014
页数	8
语种	英语
国家	美国
领域	地球科学
英文摘要	The reactivity of sandstones was studied under conditions relevant to the injection of supercritical carbon dioxide in the context of carbon geosequestration. The emphasis of the study was on the reactivity of iron-Âbearing minerals when exposed to supercritical CO₂ (scCO₂) and scCO₂ with commingled aqueous solutions containing H₂S and/or SO₂. Flow through and batch experiments were conducted. Results indicate that sandstones, irrespective of their mineralogy, are not reactive when exposed to pure scCO2 or scCO₂ with commingled aqueous solutions containing H₂S and/or SO₂ under conditions simulating the environment near the injection point (flow through experiments). However, sandstones are reactive under conditions simulating the edge of the injected CO₂ plume or ahead of the plume (batch experiments). Sandstones containing hematite (red sandstone) are particularly reactive. The composition of the reaction products is strongly dependent on the composition of the aqueous phase. The presence of dissolved sulfide leads to the conversion of hematite into pyrite and siderite. The relative amount of the pyrite and siderite is influenced by the ionic strength of the solution. Little reactivity is observed when sulfite is present in the aqueous phase. Sandstones without hematite (grey sandstones) show little reactivity regardless of the solution composition.
英文关键词	carbon sequestration mineral reactivity brine supercritical carbondioxide hematite pyrite siderite
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/6675
专题	地球科学
推荐引用方式 GB/T 7714	Schoonen, Martin A.. Reactivity of Iron Bearing Minerals and CO₂ Sequestration: A Multi-ÂDisciplinary and Experimental Approach,2014.