A method and cost model for treatment of water extracted during geologic CO2 storage

► High salinities and temperatures of extracted waters may favor thermal treatment methods. ► Treatment costs ranged from $0.50 to $2.50/ton CO2 disposed. RO costs at times exceed thermal costs. ► Sensitivity analysis shows temperature and disposal as important cost determinants. ► Concentrate disposal costs are highly correlated to location and type of water.