Techniques of rotating-disk and catalyst were used in investigating the kinetics of dolo-mite dissolution in flowing CO2-H2O system. Experiments run in the solutions equilibrated withvarious CO2 partial pressures (PCO2) from 30 to 100000 Pa. It shows that dissolution rates ofdolomite are related with rotating speeds at conditions far from equilibrium. This was explained bymodified diffusion boundary layer (DBL) model. In addition, the dissolution rates increase after ad-dition of carbonic anhydrase (CA) to solutions, where the CA catalyzes CO2 conversion. However,great differences occur among various CO2 partial pressures. The experimental observations givea conclusion that the modified DBL model enables one to predict dissolution rates and their be-haviour at various PCO2 with satisfactory precision at least far from equilibrium.