Microscopic analyses of complexes formed in adsorbent for Mo and Zr separation chromatography

Ryoji Abe; Kohei Nagoshi; Tsuyoshi Arai; Sou Watanabe; Yuichi Sano; Haruaki Matsuura; Hideaki Takagi; Nobutaka Shimizu; Masashi Koka; Takahiro Sato

doi:10.1016/j.nimb.2017.02.082

Microscopic analyses of complexes formed in adsorbent for Mo and Zr separation chromatography

Ryoji Abe, Kohei Nagoshi, Tsuyoshi Arai, Sou Watanabe, Yuichi Sano, Haruaki Matsuura, Hideaki Takagi, Nobutaka Shimizu, Masashi Koka, Takahiro Sato

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Molybdenum and zirconium obstruct the efficient recovery of minor actinides (MA(III): Am(III) and Cm(III)) by extraction chromatography; hence, the removal of these elements prior to MA(III) recovery is desirable. The use of an adsorbent impregnated with bis(2-ethylhexyl) hydrogen phosphate (HDEHP) for Mo and Zr decontamination was evaluated in this report. The adsorption/elution and column separation experiments showed that Mo and Zr in the simulated HLLW were selectively adsorbed on the particles, and that Mo was eluted by H₂O₂. EXAFS analysis and SAXS patterns of the adsorbent containing Zr revealed that the Zr-HDEHP complex had a crystal-like periodic structure similar to the structure of the precipitate produced in the solvent extraction system. Micro-PIXE analysis revealed that distribution of the residual Zr on the adsorbent was uniform.

Original language	English
Pages (from-to)	173-178
Number of pages	6
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	404
DOIs	https://doi.org/10.1016/j.nimb.2017.02.082
Publication status	Published - 2017 Aug 1

Keywords

EXAFS
Extraction chromatography
SAXS
Zr
micro-PIXE

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nimb.2017.02.082

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Abe, R., Nagoshi, K., Arai, T., Watanabe, S., Sano, Y., Matsuura, H., Takagi, H., Shimizu, N., Koka, M., & Sato, T. (2017). Microscopic analyses of complexes formed in adsorbent for Mo and Zr separation chromatography. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 404, 173-178. https://doi.org/10.1016/j.nimb.2017.02.082

Abe, R, Nagoshi, K, Arai, T, Watanabe, S, Sano, Y, Matsuura, H, Takagi, H, Shimizu, N, Koka, M & Sato, T 2017, 'Microscopic analyses of complexes formed in adsorbent for Mo and Zr separation chromatography', Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 404, pp. 173-178. https://doi.org/10.1016/j.nimb.2017.02.082

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abstract = "Molybdenum and zirconium obstruct the efficient recovery of minor actinides (MA(III): Am(III) and Cm(III)) by extraction chromatography; hence, the removal of these elements prior to MA(III) recovery is desirable. The use of an adsorbent impregnated with bis(2-ethylhexyl) hydrogen phosphate (HDEHP) for Mo and Zr decontamination was evaluated in this report. The adsorption/elution and column separation experiments showed that Mo and Zr in the simulated HLLW were selectively adsorbed on the particles, and that Mo was eluted by H2O2. EXAFS analysis and SAXS patterns of the adsorbent containing Zr revealed that the Zr-HDEHP complex had a crystal-like periodic structure similar to the structure of the precipitate produced in the solvent extraction system. Micro-PIXE analysis revealed that distribution of the residual Zr on the adsorbent was uniform.",

keywords = "EXAFS, Extraction chromatography, SAXS, Zr, micro-PIXE",

author = "Ryoji Abe and Kohei Nagoshi and Tsuyoshi Arai and Sou Watanabe and Yuichi Sano and Haruaki Matsuura and Hideaki Takagi and Nobutaka Shimizu and Masashi Koka and Takahiro Sato",

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year = "2017",

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doi = "10.1016/j.nimb.2017.02.082",

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T1 - Microscopic analyses of complexes formed in adsorbent for Mo and Zr separation chromatography

AU - Abe, Ryoji

AU - Nagoshi, Kohei

AU - Arai, Tsuyoshi

AU - Watanabe, Sou

AU - Sano, Yuichi

AU - Matsuura, Haruaki

AU - Takagi, Hideaki

AU - Shimizu, Nobutaka

AU - Koka, Masashi

AU - Sato, Takahiro

PY - 2017/8/1

Y1 - 2017/8/1

N2 - Molybdenum and zirconium obstruct the efficient recovery of minor actinides (MA(III): Am(III) and Cm(III)) by extraction chromatography; hence, the removal of these elements prior to MA(III) recovery is desirable. The use of an adsorbent impregnated with bis(2-ethylhexyl) hydrogen phosphate (HDEHP) for Mo and Zr decontamination was evaluated in this report. The adsorption/elution and column separation experiments showed that Mo and Zr in the simulated HLLW were selectively adsorbed on the particles, and that Mo was eluted by H2O2. EXAFS analysis and SAXS patterns of the adsorbent containing Zr revealed that the Zr-HDEHP complex had a crystal-like periodic structure similar to the structure of the precipitate produced in the solvent extraction system. Micro-PIXE analysis revealed that distribution of the residual Zr on the adsorbent was uniform.

AB - Molybdenum and zirconium obstruct the efficient recovery of minor actinides (MA(III): Am(III) and Cm(III)) by extraction chromatography; hence, the removal of these elements prior to MA(III) recovery is desirable. The use of an adsorbent impregnated with bis(2-ethylhexyl) hydrogen phosphate (HDEHP) for Mo and Zr decontamination was evaluated in this report. The adsorption/elution and column separation experiments showed that Mo and Zr in the simulated HLLW were selectively adsorbed on the particles, and that Mo was eluted by H2O2. EXAFS analysis and SAXS patterns of the adsorbent containing Zr revealed that the Zr-HDEHP complex had a crystal-like periodic structure similar to the structure of the precipitate produced in the solvent extraction system. Micro-PIXE analysis revealed that distribution of the residual Zr on the adsorbent was uniform.

KW - EXAFS

KW - Extraction chromatography

KW - SAXS

KW - Zr

KW - micro-PIXE

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JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

ER -

Microscopic analyses of complexes formed in adsorbent for Mo and Zr separation chromatography

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