Effects of Simulation Leakage of CCS on Physical-chemical Properties of Soil

Because of the risk of leakage with CCS (Carbon Capture and Sequestration) projects, the near surface ecological impact is considered to be an important area on CCS. In order to research soil impact of CCS, physical-chemical properties of soil were analyzed through the simulation in CO2 artificial climate chamber. The results showed as follows: Soil particle size distribution and the concentrations of heavy metal have no significant impacts with the elevated of CO2 concentration. All ionic concentration except HCO3- descended slightly at low concentration and increased obviously at high concentration with the elevating of the CO2 concentration. HCO3- and pH had no obvious variation with the change of the CO2 concentration. AHN, TN, AP, TP and AK of soil had a slightly increasing with the elevating of CO2 concentration. But AHN/TN, AP/TP had no significant change with the elevating CO2 concentration.