| DOI: | 10.2172/1238341
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| 报告号: | None
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| 报告题名: | Radiocarbon as a Reactive Tracer for Tracking Permanent CO<sub>2</sub> Storage in Basaltic Rocks |
| 作者: | Matter, Juerg; Stute, Martin; Schlosser, Peter; Broecker, Wallace
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| 出版年: | 2015
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| 发表日期: | 2015-09-30
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| 总页数: | 47
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| 国家: | 美国
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| 语种: | 英语
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| 英文关键词: | Monitoring
; verification and accounting
; CO2 mineralization
; CarbFix
; radiocarbon
; sulfurhexafluoride
; trifluoromethyl sulfur pentafluoride
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| 中文主题词: | 硫磺
; 碳酸酯
; 放射性碳
; 矿物
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| 主题词: | SULFUR
; CARBONATE
; RADIOCARBON
; MINERALS
|
| 英文摘要: | In view of concerns about the long-term integrity and containment of CO2 storage in geologic reservoirs, many efforts have been made to improve the monitoring, verification and accounting methods for geologically stored CO2. Our project aimed to demonstrate that carbon-14 (14C) could be used as a reactive tracer to monitor geochemical reactions and evaluate the extent of mineral trapping of CO2 in basaltic rocks. The capacity of a storage reservoir for mineral trapping of CO2 is largely a function of host rock composition. Mineral carbonation involves combining CO2 with divalent cations including Ca2+, Mg2+ and Fe2+. The most abundant geological sources for these cations are basaltic rocks. Based on initial storage capacity estimates, we know that basalts have the necessary capacity to store million to billion tons of CO2 via in situ mineral carbonation. However, little is known about CO2-fluid-rock reactions occurring in a basaltic storage reservoir during and post-CO2 injection. None of the common monitoring and verification techniques have been able to provide a surveying tool for mineral trapping. The most direct method for quantitative monitoring and accounting involves the tagging of the injected CO2 with 14C because 14C is not present in deep geologic reservoirs prior to injection. Accordingly, we conducted two CO2 injection tests at the CarbFix pilot injection site in Iceland to study the feasibility of 14C as a reactive tracer for monitoring CO2-fluid-rock reactions and CO2 mineralization. Our newly developed monitoring techniques, using 14C as a reactive tracer, have been successfully demonstrated. For the first time, permanent and safe disposal of CO2 as environmentally benign carbonate minerals in basaltic rocks could be shown. Over 95% of the injected CO2 at the CarbFix pilot injection site was mineralized to carbonate minerals in less than two years after injection. Our monitoring results confirm that CO2 mineralization in basaltic rocks is far faster than previously postulated. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1238341
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/41756
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| File Name/ File Size |
Content Type |
Version |
Access |
License |
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| 1238341.pdf（3042KB） | 研究报告 | -- | 开放获取 | | View
Download
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| Recommended Citation: | |
Matter, Juerg,Stute, Martin,Schlosser, Peter,et al. Radiocarbon as a Reactive Tracer for Tracking Permanent CO<sub>2</sub> Storage in Basaltic Rocks. 2015-01-01.
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