Thermal treatment of Cs-exchanged chabazite by hot isostatic pressing to support decommissioning of Fukushima Daiichi Nuclear Power Plant.
Thermal treatment of Cs-exchanged chabazite by hot isostatic pressing to support decommissioning of Fukushima Daiichi Nuclear Power Plant.
复制标题
通过热等静压对铯交换菱沸石进行热处理,以支持福岛第一核电站的退役。
DOI:
10.1016/j.jhazmat.2021.125250
复制
发表时间:
2021
影响因子:
13.6
通讯作者:
Gardner LJ
中科院分区:
文献类型:
--
作者:
Gardner LJ
Ion exchange materials are used widely for the removal of radionuclides from contaminated water at nuclear licensed sites, during normal operating procedures, decommissioning and in accident clean-up, such as the ongoing recovery operation at the Fukushima Daiichi nuclear power plant. Framework silicate inorganic ion exchange materials, such as chabazite ((Na0.14K1.03Ca1.00Mg0.17)[Al3.36Si8.53O24]•9.7H2O), have shown particular selectivity towards137Cs uptake, but their safe storage poses a number challenges requiring conditioning into passively safe waste packages of minimal volume. We demonstrate the transformation of Cs-exchanged chabazite into a glass-ceramic wasteform by hot isostatic pressing to produce a durable consolidated monolith. The application of heat and pressure resulted in the collapse of the chabazite framework, forming crystalline Cs-substituted leucite (Cs0.15(3)K0.57(4)Al0.90(4)Si2.24(5)O6) incorporated within a K2O-CaO-MgO-Al2O3-SiO2glass. The Cs partitioned preferentially into the Cs/K-feldspar which incorporated ~77% of the Cs2O inventory. Analysis of the chemical durability of the glass-ceramic wasteform revealed that the Cs release rates were comparable or lower than those reported for vitrified high level and intermediate level wastes. Overall, hot isostatic pressing was demonstrated to be an effective processing technology for conditioning spent inorganic ion exchange materials by yielding durable and passively safe wasteforms.
登录
查看更多内容
影响因子:
13.6
作者:
S. Walling;M. Kauffmann;L. J. Gardner;D. Bailey;M. Stennett;C. Corkhill;N. Hyatt
通讯作者:
N. Hyatt
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
E. Vance;S. Moricca;B. D. Begg;M. Stewart;Y. Zhang;M. Carter
通讯作者:
M. Carter
影响因子:
3.9
作者:
D. Gregg;Rifat Farzana;P. Dayal;R. Holmes;G. Triani
通讯作者:
G. Triani
影响因子:
9.9
作者:
J. Stakebake
通讯作者:
J. Stakebake
DOI:
--
发表时间:
1976
期刊:
影响因子:
--
作者:
F. Mazzi;E. Galli;G. Gottardi
通讯作者:
G. Gottardi