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Radiochimica Acta

International Journal for chemical aspects of nuclear science and technology

Editor-in-Chief: Qaim, Syed M.

12 Issues per year

IMPACT FACTOR 2017: 1.202

CiteScore 2017: 1.22

SCImago Journal Rank (SJR) 2017: 0.409
Source Normalized Impact per Paper (SNIP) 2017: 0.869

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Volume 99, Issue 11


Extraction of caesium(I) from HNO3 medium using room temperature ionic liquid containing calix[4]crown ligands as the selective extractants

S. A. Ansari / P. K. Mohapatra / D. R. Raut / V. K. Manchanda
Published Online: 2011-08-10 | DOI: https://doi.org/10.1524/ract.2011.1866


Studies on the extraction of Cs(I) from nitric acid medium were carried out using three commercial calix-crown ligands, viz. calix[4]arene-bis-crown-6, calix[4]arene-bis-1,2-benzocrown-6 and calix[4]arene-bis-2,3-naphthocrown-6 dissolved in different room temperature ionic liquids (RTILs), viz. 1-butyl-3-methyl-imidazolium hexafluorophosphate (C4mim·PF6), 1-hexyl-3-methyl-imidazolium hexafluorophosphate (C6mim·PF6) and 1-octyl-3-methyl-imidazolium hexafluorophosphate (C8mim·PF6). The distribution ratio of Cs(I) decreased with increased alkyl chain length of RTILs. The effect of nitric acid concentration on distribution behaviour of Cs(I) by calix[4]arene-bis-1,2-benzocrown-6 was investigated. The extraction of Cs(I) from HNO3 was found to be exothermic and extraction was found to be enthalpy driven. Selective extraction of Cs(I) could be achieved from a mixt ure of various fission product elements like Tc, Mo, Zr, Ce, Ru, La, Ba, and Sr.

Keywords: Room temperature ionic liquid; Radio-caesium; Solvent extraction; Radioactive waste managemen

About the article

* Correspondence address: Bhabha Atomic Research Centre, Radiochemistry Division, Trombay, Mumbai 400-085, Indien,

Published Online: 2011-08-10

Published in Print: 2011-11-01

Citation Information: Radiochimica Acta International journal for chemical aspects of nuclear science and technology, Volume 99, Issue 11, Pages 713–717, ISSN (Print) 0033-8230, DOI: https://doi.org/10.1524/ract.2011.1866.

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