TOUGHREACT is an adaptation of TOUGH2 to reactive transport modelling that considers geochemical fluid-rock interactions during multiphase fluid flow. TOUGHREACT is designed to run with several equations of state routines, such as ECO2N that is developed specifically for treating CO2Carbon dioxide-water-salt systems typically encountered in the case of CO2Carbon dioxide geological storage(CO2Carbon dioxide) A process for retaining captured CO2Carbon dioxide, so that it does not reach the atmosphereThe layer of gases surrounding the earth; the gases are mainly nitrogen (78%) and oxygen (around 21%) in saline Aquifers.