Effect of H2O2, NaClO and Fe on the dissolution of unirradiated UO2 in NaCl 5 mol kg(-1). Comparison with spent fuel dissolution experiments

被引：42

作者：

Gimenez, J ^{[1
]}

Baraj, E ^{[1
]}

Torrero, ME ^{[1
]}

Casas, I ^{[1
]}

dePablo, J ^{[1
]}

机构：

[1] UPC,DEPT CHEM ENGN,BARCELONA 08028,SPAIN

来源：

JOURNAL OF NUCLEAR MATERIALS | 1996年 / 238卷 / 01期

关键词：

D O I：

10.1016/S0022-3115(96)00341-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of H2O2, NaClO and Fe on the dissolution of unirradiated UO2(s) in NaCl 5 mol kg(-1) has been studied at neutral to alkaline pH. Dissolution rates have been determined as a function of oxidant concentration. A general equation to correlate both parameters has been obtained: log r = (-8.0 +/- 0.2) + log[Ox](0.93 +/- 0.07). The values obtained have been compared to those given for spent fuel under the same experimental conditions. The effect of iron is similar in both unirradiated UO2 and spent fuel with a final uranium concentration around 5 x 10(-8) mol kg(-1) which corresponds to the solubility value of UO2(f) under reducing conditions.

引用

页码：64 / 69

页数：6

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