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Journal Articles

Safety assessment of adsorbent for extraction chromatography and effect on radiation of separation operation

Miyazaki, Yasunori; Sano, Yuichi

Hoshasen Kagaku (Internet), (112), p.27 - 32, 2021/11

no abstracts in English

Journal Articles

Observation of Eu adsorption band in the CMPO/SiO$$_{2}$$-P column by neutron resonance absorption imaging

Miyazaki, Yasunori; Watanabe, So; Nakamura, Masahiro; Shibata, Atsuhiro; Nomura, Kazunori; Kai, Tetsuya; Parker, J. D.*

JPS Conference Proceedings (Internet), 33, p.011073_1 - 011073_7, 2021/03

Neutron resonance absorption imaging was adapted to observe the Eu band adsorbed in the CMPO/SiO$$_{2}$$-P column for minor actinide recovery by extraction chromatography. Several wet columns were prepared by either light water or heavy water and compared with the dry column to evaluate the neutron transmission. The neutron transmission spectra showed that 45% was transmitted through the dry column while 20% and 40% were transmitted through the wet columns of light water and heavy water, respectively. The results indicated that heavy water is more applicable than light water to observe the Eu adsorption band in the CMPO/SiO$$_{2}$$-P column.

Journal Articles

Study on gamma-ray-degradation of adsorbent for low pressure-loss extraction chromatography

Miyazaki, Yasunori; Sano, Yuichi; Okamura, Nobuo; Watanabe, Masayuki; Koka, Masashi*

QST-M-29; QST Takasaki Annual Report 2019, P. 72, 2021/03

no abstracts in English

Journal Articles

The Photoelectron spectroscopic study of the hydrated complex of HONTA + HNO$$_{3}$$

Miyazaki, Yasunori; Adachi, Junichi*; Masuda, Ryotaro*; Gejo, Tatsuo*; Hoshino, Masamitsu*

Photon Factory Activity Report 2021 (Internet), 2 Pages, 2021/00

no abstracts in English

Oral presentation

Degradation behaviors of the TODGA/SiO$$_{2}$$-P adsorbent for extraction chromatography

Miyazaki, Yasunori; Watanabe, So; Sano, Yuichi; Kofuji, Hirohide; Takeuchi, Masayuki; Ishigami, Ryoya*

no journal, , 

Extraction chromatography has been employed to separate minor actinides (MAs) from spent nuclear fuel for the purpose of reducing environmental impact. In our strategy, the polymer-coated SiO$$_{2}$$ particle with an extractant is packed in a column and utilized for group separation and/or isolation of the specific element (Am and Cm, for example) from high level liquid waste. The safety use of chromatography was assessed by irradiation to the adsorbent with He$$^{2+}$$ beam and $$gamma$$ ray to simulate the high-level nuclear waste. In this study, we focused on a recently developed extractant TODGA and its degradation behavior on top of the SiO$$_{2}$$-P adsorbent was investigated by a similar experimental manner.

Oral presentation

Investigation of the chemical composition for the Zr-Te deposition by reaction crystallization method

Shimohashi, Kengo*; Arai, Takahiro*; Ito, Daiyu*; Hirasawa, Izumi*; Miyazaki, Yasunori; Takeuchi, Masayuki

no journal, , 

no abstracts in English

Oral presentation

Deterioration study of adsorbents for selective minor actinides separation using extraction chromatography under radiation

Miyazaki, Yasunori; Watanabe, So; Sano, Yuichi; Kofuji, Hirohide; Takeuchi, Masayuki; Ishigami, Ryoya*; Koka, Masashi*; Sato, Takahiro*

no journal, , 

no abstracts in English

Oral presentation

Prevention of ZMH adhesion by the addition of MoO$$_{3}$$ crystal

Shimohashi, Kengo*; Ito, Daiyu*; Hirasawa, Izumi*; Miyazaki, Yasunori; Takeuchi, Masayuki

no journal, , 

no abstracts in English

Oral presentation

Basic research programs of vitrification technology for waste volume reduction, 43; Separation property of HLW adsorption glass for Mo and Zr recovery

Kofuji, Hirohide; Watanabe, So; Goto, Ichiro; Miyazaki, Yasunori; Nomura, Kazunori; Takeuchi, Masayuki

no journal, , 

no abstracts in English

Oral presentation

$$gamma$$-ray resistant assessment of MA adsorbent for the next generation vitrification

Miyazaki, Yasunori; Sano, Yuichi; Kofuji, Hirohide; Watanabe, So; Koka, Masashi*; Sato, Takahiro*

no journal, , 

no abstracts in English

Oral presentation

Safety assessment study of extraction chromatographic adsorbent by radiation

Miyazaki, Yasunori; Sano, Yuichi; Kofuji, Hirohide; Watanabe, So; Koka, Masashi*; Sato, Takahiro*

no journal, , 

no abstracts in English

Oral presentation

Development of high performance clarification system for reprocessing; System concept and fundamental study of filter performance

Takeuchi, Masayuki; Miyazaki, Yasunori; Kofuji, Hirohide

no journal, , 

no abstracts in English

Oral presentation

Basic research programs of vitrification technology for waste volume reduction, 57; Granulation of porous silica particle for extraction chromatography adsorbent

Miyazaki, Yasunori; Goto, Ichiro*; Watanabe, So; Sano, Yuichi; Kofuji, Hirohide; Takeuchi, Masayuki

no journal, , 

no abstracts in English

Oral presentation

Preventing encrustation of Zirconium Molybdate Hydrate by suspended molybdenum trioxide hydrate

Abe, Risako*; Hirasawa, Izumi*; Miyazaki, Yasunori; Takeuchi, Masayuki

no journal, , 

no abstracts in English

Oral presentation

Preventing precipitate/encrustation of ZMH by Te addition

Shimohashi, Kengo*; Hirasawa, Izumi*; Miyazaki, Yasunori; Takeuchi, Masayuki

no journal, , 

no abstracts in English

Oral presentation

Development of resonance neutron imaging technique to reveal ion separation behavior for extraction chromatography

Miyazaki, Yasunori; Watanabe, So; Nakamura, Masahiro; Shibata, Atsuhiro; Nomura, Kazunori

no journal, , 

High-level liquid waste generated by reprocessing spent nuclear fuel is geologically disposed after vitrification, and partitioning and transmutation of minor actinide (MA: Am, Cm) is performed to minimize the volume and toxicity of radioactive waste. We have been developing extraction chromatography for selective MA partitioning. The calculation code that simulates partitioning behavior of ions is developed, but the chromatogram is not yet reproduced adequately. The resonance neutron imaging at J-PARC allows us to observe partitioning behavior of ions inside the column undestructively. The obtained diffusion and dispersion data is applied to upgrade the simulation code as well as increase of column partition property.

Oral presentation

Basic research programs of vitrification technology for waste volume reduction, 70; Vitrification property of HLW adsorption glass

Kofuji, Hirohide; Miyazaki, Yasunori; Watanabe, So; Goto, Ichiro*; Oyama, Koichi; Takeuchi, Masayuki

no journal, , 

no abstracts in English

Oral presentation

Effect of temperature change on ZMH encrustation

Sue, Kasumi*; Hirasawa, Izumi*; Miyazaki, Yasunori; Takeuchi, Masayuki

no journal, , 

no abstracts in English

Oral presentation

Understanding the elution adsorption behavior of Eu in the column using the resonant neutron imaging method

Sato, Daisuke; Miyazaki, Yasunori; Watanabe, So; Nakamura, Masahiro; Kai, Tetsuya; Shibata, Atsuhiro; Nomura, Kazunori

no journal, , 

no abstracts in English

Oral presentation

Granulation of silica support for minor actinide recovery by spray drying method

Ambai, Hiromu; Goto, Ichiro*; Miyazaki, Yasunori; Sano, Yuichi; Takeuchi, Masayuki; Watanabe, Masayuki; Nemoto, Gentaro*

no journal, , 

no abstracts in English

32 (Records 1-20 displayed on this page)