High capacity immobilization of TRPO waste by Gd2Zr2O7 pyrochlore

被引：31

作者：

Lu, Xirui ^{[1
,2
]}

Ding, Yi ^{[2
]}

Dan, Hui ^{[2
]}

Wen, Mingfen ^{[3
]}

Mao, Xueli ^{[2
]}

Wu, Yanlin ^{[4
]}

Wang, Xiaolin ^{[1
]}

机构：

[1] China Acad Engn Phys, Mianyang 621900, Peoples R China

[2] Southwest Univ Sci & Technol, Key Subject Lab Natl Def Radioact Waste & Environ, Mianyang 621010, Peoples R China

[3] Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China

[4] Grad Univ Adv Studies, Hayama 2400193, Japan

来源：

MATERIALS LETTERS | 2014年 / 136卷

基金：

中国国家自然科学基金;

关键词：

Pyrochlore; TRPO wastes; Solubility; Nuclear waste forms; Chemical durability; ACTINIDES; MATRIX;

D O I：

10.1016/j.matlet.2014.08.021

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper describes the immobilization of trialkyl phosphine oxides (TRPO) waste in Gd2Zr2O7 pyrochlore through designed elements occupation. It was found that up to 45 wt% TRPO waste could be successfully incorporated in the Gd2Zr2O7 pyrochlore structure and the ordered pyrochlore structure was maintained. The Gd and Zr position could be replaced by the elements of TRPO wastes in the same time through designed elements occupation. Furthermore, the results of anti-leaching experiment shown that the immobilized TRPO waste have good chemical durability. This route provides an alternative flexible system to tackle radioactive wastes arising from the advanced nuclear reactors. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：1 / 3

页数：3

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