Direct separation of minor actinides from high level liquid waste by Me2CA-BTP/SiO2-P adsorbent

被引：26
作者：
Ning, Shun Yan [1 ,2 ]
Wang, Xin Peng [1 ,2 ]
Zou, Qing [3 ]
Shi, Wei Qun [1 ]
Tang, Fang Dong [4 ]
He, Lin Feng [4 ]
Wei, Yue Zhou [1 ,2 ,3 ]
机构：
[1] Guangxi Univ, Sch Resources Environm & Mat, Nanning 530004, Peoples R China
[2] Guangxi Univ, State Key Lab Proc Nonferrous Met & Featured Mat, Nanning 530004, Peoples R China
[3] Shanghai Jiao Tong Univ, Sch Nucl Sci & Engn, Shanghai 200240, Peoples R China
[4] Shanghai Inst Measurement & Testing Technol, Shanghai 201203, Peoples R China
来源：
SCIENTIFIC REPORTS | 2017年 / 7卷
关键词：
ME-2-CA-BTP/SIO2-P ADSORBENT; EXTRACTION CHROMATOGRAPHY; TRIVALENT LANTHANIDES; ADSORPTION BEHAVIOR; FISSION-PRODUCTS; BTP ADSORBENT; NITRIC-ACID; EU(III); AM(III); AMERICIUM(III);
D O I：
10.1038/s41598-017-14758-2
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Directly separating minor actinides (MA: Am, Cm, etc.) from high level liquid waste (HLLW) containing lanthanides and other fission products is of great significance for the whole nuclear fuel cycle, especially in the aspects of reducing long-term radioactivity and simplifying the post-processing separation process. Herein, a novel silica-based adsorbent Me-2-CA-BTP/SiO2-P was prepared by impregnating Me-2-CA-BTP (2,6-bis(5,6,7,8-tetrahydro-5,8,9,9-tetramethyl-5,8-methano-1,2,4-benzotriazin-3-yl) pyridine) into porous silica/polymer support particles (SiO2-P) under reduced pressure. It was found Me(2)CA-BTP/SiO2-P exhibited good adsorption selectivity towards 241Am(III) over 152Eu(III) in a wide nitric acid range, acceptable adsorption kinetic, adequate stability against. irradiation in 1 and 3 M HNO3 solutions, and successfully separated 241Am(III) from simulated 3 M HNO3 HLLW. In sum, considering the good overall performance of Me-2-CA-BTP/SiO2-P adsorbent, it has great application potential for directly separating MA from HLLW, and is expected to establish an advanced simplified MA separation process, which is very meaningful for the development of nuclear energy.
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页数：7
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