Composition of soil samples from injection location

CO2 leakage from subsurface storage sites is one of the main concerns connected with the CCS technology. As CO2 leakages into near surface formations appear to be very unlikely within pilot CCS projects, the aim of this work is to emulate a leakage by injecting CO2 into a near surface aquifer. The two main questions pursued by the injection test are (1) to investigate the impact of CO2 on the hydrogeochemistry of the groundwater as a base for groundwater risk assessment and (2) to develop and apply monitoring methods and monitoring concepts for detecting CO2 leakages in shallow aquifers. […]

地下储存场地的二氧化碳（CO₂）泄漏是与碳捕获与封存（Carbon Capture and Storage, CCS）技术相关的主要关切问题之一。鉴于CCS试点项目中二氧化碳泄漏至近地表地层的可能性极低，本研究旨在通过向近地表含水层注入二氧化碳来模拟泄漏场景。本次注入试验聚焦两大核心研究问题：（1）探究二氧化碳对地下水水文地球化学特性的影响，以此作为地下水风险评估的基础；（2）研发并应用监测方法与监测方案，以实现浅层含水层内二氧化碳泄漏的检测。[...]