Simulation experiment research of the impact of CO2 leakage from geological storage on soil microbes

摘要

CCS is considered to be the most effective way to control the CO2 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 CO2 concentration which affects the inhibition and promotion of microorganism growth can be determined by analyzing the response of soil microbes in different CO2 concentrations. The soil microbial indicators of sorghum have a similar trend when the concentration of CO2 between normal atmosphere and 80000umol/mol. It shows a decreasing trend after the first increase. And the indicators reach the maximum at 20000 μmol/mol and the minimum at 80000umol/mol respectively. The leakage of the CCS project can be evaluated by analyzing the response of soil microbes in the future.