DURABILITY OF AN LA2ZR2O7 WASTE FORM CONTAINING VARIOUS AMOUNTS OF SIMULATED HLW ELEMENTS

被引：54

作者：

HAYAKAWA, I

KAMIZONO, H

机构：

[1] Department of Environmental Safety Research, Japan Atomic Energy Research Institute, Ibaraki-ken, 319-11, Tokai-Mura

来源：

JOURNAL OF NUCLEAR MATERIALS | 1993年 / 202卷 / 1-2期

关键词：

Composition effects - Durability - Hydrochloric acid - Lanthanum compounds - Leaching - pH effects - Solutions;

D O I：

10.1016/0022-3115(93)90039-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Durability of an La2Zr2O7 waste form containing various amounts of simulated HLW elements was examined at 90-degrees-C in three kinds of solutions. In HCl solution of pH = 1, the leach rates of La, Nd and Ce from the La2Zr2O7 waste form decreased with increasing concentration of Nd and Ce which were solved in LaZr2O7 yielding solid solutions. In deionized water of pH = 5.6 and NaOH solution of pH = 10, however, such a compositional effect on leach rates was not observed because of the formation of hydroxides or carbonates on the surface of the solid.

引用

页码：163 / 168

页数：6

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