Effects of magnesium ion on dissolution of nuclear waste glass

Iwata, Hajime; Sekine, Nobuyuki*; Mitsui, Seiichiro

no journal, , 

Static leaching tests of simulated nuclear waste glass were carried out at 90C in an air atmosphere using a MgCl solution and deionized water. As a result, in the MgCl solution, temporal plateau and following resumption of glass dissolution were observed, while an ordinary dissolution behavior, which shows rate decrease with time, was observed in the deionized water. It is considered that these unique dissolution behavior in MgCl solution may be related to the evolution of the Mg-containing mineral species deposited on the glass surface.