Pages 331-332
Geological storage of carbon dioxide (CO_2) has been investigated as an option for controlling the emission of carbon dioxide into the atmosphere. When a large amount of CO_2 is sent into an aquifer, there are many non-solved portions about the states and dissolution actions of CO_2,and they need to examine the dynamic action of CO_2 in aquifer enough. Since the elucidation is seldom progressing about the diffusion action of supplied CO_2,it is necessary to accumulate the quantitative data about its dissolution and diffusion action. Then, in this research we will measure the thermophysical properties of CO_2 in aqueous solutions that include an electrolyte such as sodium chloride (following, NaCl), in the pressure and temperature conditions of the underground aquifer. We have measured the solubility of CO_2 in aqueous solutions of NaCl and the viscosity of solutions.
