A versatile monazite-IPG glass-ceramic waste form with simulated HLW: Synthesis and characterization

被引：30

作者：

Asuvathraman, R. ^{[1
]}

Joseph, Kitheri ^{[1
]}

Madhavan, R. Raja ^{[1
]}

Sudha, R. ^{[1
]}

Prabhu, R. Krishna ^{[1
]}

Kutty, K. V. Govindan ^{[1
]}

机构：

[1] Indira Gandhi Ctr Atom Res, Chem Grp, Mat Chem Div, Kalpakkam 603102, Tamil Nadu, India

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2015年 / 35卷 / 15期

关键词：

HLW immobilization; Ca doped CePO4 monazite; Nuclear waste form; Iron phosphate glass (IPG); Glass-ceramic; Leaching; MCC-5; IRON PHOSPHATE-GLASSES; NUCLEAR-WASTE; RADIOACTIVE-WASTE; DEGREES-C; PHASE; STABILITY; ACTINIDES; CORROSION; DEPOSITS; SPECTRA;

D O I：

10.1016/j.jeurceramsoc.2015.07.025

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In Ca doped CePO4 monazite (viz., Ce0.8Ca0.2PO4) cerium exhibits mixed valence state (+3 and +4) and therefore can accommodate cations of any valence (by converting Ce3+ to Ce4+ or vice versa) subject to the size and other restrictions. A simulated waste form prepared based on the versatile monazite phase, Ce0.8Ca0.2PO4, showed higher leaching for Cs and Mo indicating that these elements do not enter the monazite lattice. Iron phosphate glass (IPG) is an alternate glass waste form considered for HLW immobilization. A glass-ceramic composite of crystalline monazite and IPG could have synergistic effects and can improve the leaching resistance. The preparation and characterization of a versatile monazite-IPG glass-ceramic waste form with 20 wt.% simulated HLW oxides and its leaching behavior are reported in this paper. The monazite-IPG glass-ceramic simulated waste form is found to have excellent chemical durability. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：4233 / 4239

页数：7

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