Study on selective separation of cesium from high level liquid waste using a macroporous silica-based supramolecular recognition absorbent

Y. Wu; S.-Y. Kim; D. Tozawa; T. Ito; T. Tada; K. Hitomi; E. Kuraoka; H. Yamazaki; K. Ishii

doi:10.1007/s10967-012-1738-6

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 293: Issue 1

Study on selective separation of cesium from high level liquid waste using a macroporous silica-based supramolecular recognition absorbent

Authors:

Y. Wu

Y. Wu Cyclotron and Radioisotope Center, Tohoku University, 6-3, Aza-Aoba, Aramaki, Aoba-ku, Sendai, 980-8578 Japan

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S.-Y. Kim

S.-Y. Kim Cyclotron and Radioisotope Center, Tohoku University, 6-3, Aza-Aoba, Aramaki, Aoba-ku, Sendai, 980-8578 Japan

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D. Tozawa

D. Tozawa Department of Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University, 6-6-01-2, Aza-Aoba, Aramaki, Aoba-ku, Sendai, 980-8579 Japan

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T. Ito

T. Ito Department of Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University, 6-6-01-2, Aza-Aoba, Aramaki, Aoba-ku, Sendai, 980-8579 Japan

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T. Tada

T. Tada Cyclotron and Radioisotope Center, Tohoku University, 6-3, Aza-Aoba, Aramaki, Aoba-ku, Sendai, 980-8578 Japan

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K. Hitomi

K. Hitomi Cyclotron and Radioisotope Center, Tohoku University, 6-3, Aza-Aoba, Aramaki, Aoba-ku, Sendai, 980-8578 Japan

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E. Kuraoka

E. Kuraoka Cyclotron and Radioisotope Center, Tohoku University, 6-3, Aza-Aoba, Aramaki, Aoba-ku, Sendai, 980-8578 Japan

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H. Yamazaki

H. Yamazaki Cyclotron and Radioisotope Center, Tohoku University, 6-3, Aza-Aoba, Aramaki, Aoba-ku, Sendai, 980-8578 Japan

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, and

K. Ishii

K. Ishii

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Pages:: 13–20

Online Publication Date:: 24 Mar 2012

Publication Date:: 01 Jul 2012

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s10967-012-1738-6

Keywords:: Cesium; High level liquid waste (HLLW); Macroporous silica-based support; Calix-crown; Adsorption; Equilibrium; Column

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Abstract

A macroporous silica-based supramolecular recognition absorbent (Calix[4] + Dodecanol)/SiO₂–P, was prepared by successive impregnation and fixing the 1,3-[(2,4-diethylheptylethoxy)oxy]-2,4-crown-6-Calix[4]arene (Calix[4]arene-R14) and its molecule modifier 1-Dodecanol onto SiO₂ silica-based polymer support. The characterization of (Calix[4] + Dodecanol)/SiO₂–P was examined by thermal gravimetry and differential thermal analysis and electron probe microanalysis. Relatively large separation factors of Cs and other metal ions (α_Cs/Mⁿ⁺) above 60 were obtained in the presence of 3 M HNO₃. The adsorption data of Cs(I) fitted well with Langmuir isotherm and the maximum adsorption capacity was estimated to be 0.19 mmol g⁻¹. The Cs(I) in 3 M HNO₃ were also effectively adsorption on (Calix[4] + Dodecanol)/SiO₂–P in the column operation, and the loaded Cs(I) was successfully eluted with an eluent of H₂O. The column packed with (Calix[4] + Dodecanol)/SiO₂–P had excellent reusability after three cycles.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)