Application of environmental isotope technique to geological storage of carbon dioxide
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摘要: 通过分析二氧化碳地质储存的地下空间和时间特征，并结合水环境同位素技术的特点，提出将其应用于碳储存方面可以从以下三方面入手：(1)利用水环境同位素技术判断二氧化碳规模化封存场地的水文地质条件的方法，评价典型二氧化碳规模化封存咸水层的安全持久性及储存二氧化碳的适宜性;（2）确定判断泄露二氧化碳“碳源”的同位素方法，研究泄露的“碳”源；（3）通过水环境同位素技术，研究二氧化碳地质封存与地下水循环、径流之间的关系，评价规模化封存二氧化碳潜在泄露对浅层含水层的影响。Abstract: Through analyzing the subsurface space and time characteristics of geological storage of carbon dioxide and considering the characteristics of environmental isotopes,the following three aspects are presented when environmental isotopes are used in carbon storage:(1) hydrogeological conditions of the carbon dioxide sequestration site are identified and safety durability of typical salt water layer in which carbon dioxide is sealed and its suitability to store carbon dioxide are evaluated; (2) determining the isotope methods to recognize the “leaked carbon source”and the leaked“carbon” source; (3) with the environmental isotope technique, the relationship between groundwater circulation and CO2 geological storage is examined, and the potential leakage of carbon dioxide sequestration effect on the shallow aquifer is evaluated.
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