Abstract
The modified TRPO process for removing actinide elements from synthetic solution, which was taken from reprocessing of power reactor nuclear fuel, was verified by cascade experiment. Neptunium valence was adjusted in the process for improving neptunium removing efficiency. At 1 mol/L concentration of HNO{sub 3} of feed solution and after a few stages of extraction with 30% t=TRPO kerosene, over 99.9% of Am, Pu, Np and U could be removed from HAW (high level radioactive waste) solution. The stripping of actinides loaded in TRPO are accomplished by high concentration nitric acid, oxalic acid and sodium carbonate instead of amino carboxylic complexing agents used in previous process. The actinides stripped were divided into three groups, which are Am + RE, Np + Pu, and U, and the cross contamination between them is small. Behaviours of F.P. elements are divided into three types which are not extracted, little extracted and extracted elements. The extracted elements are rare earth and Pd, Zr and Mo which are co-extracted with actinides. The separation factor between actinides and other two types of F.P.elements will increase if more scrubbing sections are added in the process. The relative concentration profile of actinide elements and Tc in various stages
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Chongli, Song;
Dazhu, Yang;
Longhai, He;
Jingming, Xu;
Yongjun, Zhu
[1]
- Inst. of Nucl. Energy Technology, Tsinghua Univ., Beijing (China)
Citation Formats
Chongli, Song, Dazhu, Yang, Longhai, He, Jingming, Xu, and Yongjun, Zhu.
Removal of actinide elements from high level radioactive waste by trialkylphosphine oxide (TRPO). Cascade extraction verification with synthetic HAW solution.
China: N. p.,
1992.
Web.
Chongli, Song, Dazhu, Yang, Longhai, He, Jingming, Xu, & Yongjun, Zhu.
Removal of actinide elements from high level radioactive waste by trialkylphosphine oxide (TRPO). Cascade extraction verification with synthetic HAW solution.
China.
Chongli, Song, Dazhu, Yang, Longhai, He, Jingming, Xu, and Yongjun, Zhu.
1992.
"Removal of actinide elements from high level radioactive waste by trialkylphosphine oxide (TRPO). Cascade extraction verification with synthetic HAW solution."
China.
@misc{etde_10120250,
title = {Removal of actinide elements from high level radioactive waste by trialkylphosphine oxide (TRPO). Cascade extraction verification with synthetic HAW solution}
author = {Chongli, Song, Dazhu, Yang, Longhai, He, Jingming, Xu, and Yongjun, Zhu}
abstractNote = {The modified TRPO process for removing actinide elements from synthetic solution, which was taken from reprocessing of power reactor nuclear fuel, was verified by cascade experiment. Neptunium valence was adjusted in the process for improving neptunium removing efficiency. At 1 mol/L concentration of HNO{sub 3} of feed solution and after a few stages of extraction with 30% t=TRPO kerosene, over 99.9% of Am, Pu, Np and U could be removed from HAW (high level radioactive waste) solution. The stripping of actinides loaded in TRPO are accomplished by high concentration nitric acid, oxalic acid and sodium carbonate instead of amino carboxylic complexing agents used in previous process. The actinides stripped were divided into three groups, which are Am + RE, Np + Pu, and U, and the cross contamination between them is small. Behaviours of F.P. elements are divided into three types which are not extracted, little extracted and extracted elements. The extracted elements are rare earth and Pd, Zr and Mo which are co-extracted with actinides. The separation factor between actinides and other two types of F.P.elements will increase if more scrubbing sections are added in the process. The relative concentration profile of actinide elements and Tc in various stages as well as the distribution of actinides and F.P. elements in the process stream solutions are also presented.}
place = {China}
year = {1992}
month = {Mar}
}
title = {Removal of actinide elements from high level radioactive waste by trialkylphosphine oxide (TRPO). Cascade extraction verification with synthetic HAW solution}
author = {Chongli, Song, Dazhu, Yang, Longhai, He, Jingming, Xu, and Yongjun, Zhu}
abstractNote = {The modified TRPO process for removing actinide elements from synthetic solution, which was taken from reprocessing of power reactor nuclear fuel, was verified by cascade experiment. Neptunium valence was adjusted in the process for improving neptunium removing efficiency. At 1 mol/L concentration of HNO{sub 3} of feed solution and after a few stages of extraction with 30% t=TRPO kerosene, over 99.9% of Am, Pu, Np and U could be removed from HAW (high level radioactive waste) solution. The stripping of actinides loaded in TRPO are accomplished by high concentration nitric acid, oxalic acid and sodium carbonate instead of amino carboxylic complexing agents used in previous process. The actinides stripped were divided into three groups, which are Am + RE, Np + Pu, and U, and the cross contamination between them is small. Behaviours of F.P. elements are divided into three types which are not extracted, little extracted and extracted elements. The extracted elements are rare earth and Pd, Zr and Mo which are co-extracted with actinides. The separation factor between actinides and other two types of F.P.elements will increase if more scrubbing sections are added in the process. The relative concentration profile of actinide elements and Tc in various stages as well as the distribution of actinides and F.P. elements in the process stream solutions are also presented.}
place = {China}
year = {1992}
month = {Mar}
}