Effect on Mo-adsorption/Tc-elution properties of alumina with different surface structures

Fujita, Yoshitaka; Seki, Misaki; Sano, Tadafumi*; Fujihara, Yasuyuki*; Kitagawa, Tomoya*; Matsukura, Minoru*; Hori, Junichi*; Suzuki, Tatsuya*; Tsuchiya, Kunihiko

Journal of Radioanalytical and Nuclear Chemistry, 327(3), p.1355 - 1363, 2021/03

AA2020-0805.pdf:0.77MB

https://doi.org/10.1007/s10967-021-07616-z

We prepared three types of AlO with different surface structures and investigated Mo-adsorption/Tc-elution properties using [Mo]MoO that was irradiated in the Kyoto University Research Reactor. AlO adsorbed [Mo]molybdate ions in solutions at different pH; the lower was the pH, the higher was the Mo-adsorption capacity of AlO. The Tc-elution properties of molybdate ion adsorbed AlO were elucidated by flowing saline. Consequently, it was suggested that Mo-adsorption/desorption properties are affected by the specific surface of AlO and Tc-elution properties are affected by the crystal structure of AlO.

Preliminary tests on adsorption / desorption of alumina adsorbents

Suzuki, Yoshitaka; Ishida, Takuya*; Suzuki, Yumi*; Matsukura, Minoru*; Kurosaki, Fumio*; Nishikata, Kaori; Mimura, Hitoshi*; Tsuchiya, Kunihiko

JAEA-Technology 2016-027, 24 Pages, 2016/12

JAEA-Technology-2016-027.pdf:4.15MB

The research and development (R&D) on the production of Mo/Tc by (n,) method has been carried out in the Neutron Irradiation and Testing Reactor Center. The Mo production by (n,) reaction is a simple and easy method, and it also is advantageous from viewpoints of nuclear proliferation resistance and waste management. However, it is difficult to produce the Tc solution with high radioactive concentration because the specific radioactivity of Mo by this method is extremely low. Up to now, various Mo absorbents such as Polyzirconium Compound (PZC) and Polytitanium Compound (PTC) have been developed with high Mo adsorption efficiency. It is necessary for utilization to the generator of these absorbents to evaluate the effect of elements containing these absorbents and to assure the quality of Tc solution. In this report, the status of R&D of the Mo adsorbents was investigated. The alumina as Mo adsorbent, which uses in medical Mo/Tc generator, was focused and Mo adsorption/desorption properties of three kinds of alumina was evaluated by different properties such as crystal structure and specific surface.

Effect on molybdenum adsorption/desorption property of alumina

Suzuki, Yoshitaka; Ishida, Takuya; Suzuki, Yumi*; Matsukura, Minoru*; Kurosaki, Fumio*; Nishikata, Kaori; Mimura, Hitoshi*; Tsuchiya, Kunihiko

no journal, , 

no abstracts in English

Development of treatment for low radioactive effluent in Tokai Reprocessing Plant, 14; Study of Cs/Sr adsorption process by two linked column experiment

Takano, Masato; Ito, Yoshiyuki; Suzuki, Tatsuya*; Takimoto, Mayumi*; Matsukura, Minoru*; Mimura, Hitoshi*; Mori, Koichi*; Iwasaki, Mamoru*

no journal, , 

no abstracts in English

Study of pelletizing and sintering technologies of secondary wastes produced from contaminated water treatment, 2; Evaluation of the pelletized and the sintered products

Kurosaki, Fumio*; Ueda, Hiroshi*; Yoneyama, Takashi*; Matsukura, Minoru*; Mimura, Hitoshi*; Sato, Junya; Nakazawa, Osamu; Meguro, Yoshihiro; Mori, Koichi*; Komori, Hideyuki*

no journal, , 

no abstracts in English

Development of alumina adsorbents for Mo/Tc generator, 2; Effect on molybdenum adsorption of alumina with different surface properties

Suzuki, Yoshitaka; Namekawa, Yoji; Kitagawa, Tomoya*; Matsukura, Minoru*; Kurosaki, Fumio*; Nishikata, Kaori; Matsui, Yoshinori; Mimura, Hitoshi*; Tsuchiya, Kunihiko

no journal, , 

no abstracts in English

Molybdenum adsorption and recovery properties of alumina adsorbent for Mo/Tc generator

Suzuki, Yoshitaka; Namekawa, Yoji*; Kitagawa, Tomoya*; Kakei, Sadanori*; Matsukura, Minoru*; Yoshinaga, Hideo*; Mimura, Hitoshi*; Tsuchiya, Kunihiko

no journal, , 

no abstracts in English

Mo adsorption and Tc elution properties of alumina using (n, )Mo

Fujita, Yoshitaka; Seki, Misaki; Sano, Tadafumi*; Suzuki, Tatsuya*; Kitagawa, Tomoya*; Nishikata, Kaori; Matsukura, Minoru*; Tsuchiya, Kunihiko

no journal, , 

no abstracts in English

ギブサイト系アルミナのモリブデン吸着剤及びそれを用いた99MO/99MTCジェネレータ

藤田 善貴; 土谷 邦彦

松倉 実*; 北河 友也*

JP, 2016-172615  Patent licensing information  Patent publication (In Japanese)

【課題】現在99Mo/99mTcジェネレータに使用されている、χとγの混相を持つ現在使用されている医療用アルミナよりもMo吸着量が高く、一度吸着したMoを回収可能なギブサイト系アルミナのモリブデン吸着剤及びそれを用いた99Mo/99mTcジェネレータを提供すること。 【解決手段】モリブデン吸着剤は、モリブデン(Mo)の比表面積換算吸着量が、0.275 mg/m2から0.450 mg/m2の範囲にあることを特徴とするギブサイト系アルミナから成り、この吸着剤は、吸着したモリブデンを簡単な方法で回収できることから、天然同位体もしくは98Mo濃縮Moから(n,γ)法を利用して99mTcを得る99Mo/99mTcジェネレータとして特に有効である。

擬ベーマイト系アルミナのモリブデン吸着剤及びそれを用いた99MO/99MTCジェネレータ

藤田 善貴; 土谷 邦彦

松倉 実*; 北河 友也*

JP, 2016-172617  Patent licensing information  Patent publication (In Japanese)

【課題】現在99Mo/99mTcジェネレータに使用されている、χとγの混相を持つ現在使用されている医療用アルミナよりもMo吸着量が高く、一度吸着したMoを回収可能な擬ベーマイト系アルミナのモリブデン吸着剤及びそれを用いた99Mo/99mTcジェネレータを提供すること。 【解決手段】モリブデン吸着剤は、モリブデン(Mo)の比表面積換算吸着量が、0.273 mg/m2から0.368 mg/m2の範囲にあることを特徴とする擬ベーマイト系アルミナから成り、この吸着剤は、吸着したモリブデンを簡単な方法で回収できることから、天然同位体もしくは98Mo濃縮Moから(n,γ)法を利用して99mTcを得る99Mo/99mTcジェネレータとして特に有効である。