Simulation Experiment Research of the Impact of CO2 Leakage from Geological Storage on Soil Microbes

Abstract CCS is considered to be the most effective way to control the CO 2 emissions. But there is a risk of leakage with CCS projects during the process of actual operation. So, it is important to research the leakage of CCS. In this article, the range of CO 2 concentration which affects the inhibition and promotion of microorganism growth can be determined by analyzing the response of soil microbes in different CO 2 concentrations. The soil microbial indicators of sorghum have a similar trend when the concentration of CO 2 between normal atmosphere and 80000 μmol/mol. It shows a decreasing trend after the first increase. And the indicators reach the maximum at 20000 μmol/mol and the minimum at 80000 μmol/mol respectively. The leakage of the CCS project can be evaluated by analyzing the response of soil microbes in the future.