Sorption characteristics of fluoride on to magnesium oxide-rich phases calcined at different temperatures

► Higher calcination temperatures produced more crystalline MgO with smaller specific surface area and provided larger values of the total basicity per unit surface area. ► Larger total basicity per unit surface area made the reactivity with F- ions in aqueous phase more feasible, resulting in a greater degree of F- sorption. ► This is the first paper which describes the relationship between the solid base characteristics obtained by CO2-TPD for MgO with different calcination temperature as a function of the reactivity of F- sorption in the aqueous phase.