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Separation Science and Technology Volume 44, 2009 - Issue 3
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EXTRACTION

Comparative Studies on the Extraction of Protactinium Using Different Kinds of Organic Extractants

F. H. El-Sweify Nuclear Chemistry Department, Radioisotopes Production Division, Hot Labs Center, Atomic Energy Authority, Cairo, Egypt
,
A. A. Abdel Fattah Nuclear Chemistry Department, Radioisotopes Production Division, Hot Labs Center, Atomic Energy Authority, Cairo, EgyptCorrespondence[email protected]
&
S. M. Ali Nuclear Chemistry Department, Radioisotopes Production Division, Hot Labs Center, Atomic Energy Authority, Cairo, Egypt
Pages 753-772 | Received 13 Oct 2007, Accepted 02 Jul 2008, Published online: 22 Jun 2010
 
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Abstract

The extraction behavior of Pa(V) from various aqueous solutions was studied using different extractants, namely Amberlite-LA-2 (Amb-LA2), diethylhexyl phosphoric acid (HDEHP), tributylphosphate (TBP) and Tricaprylylmethyl ammonium chloride (TCMA) in toluene. The extraction was carried out from slightly acidic as well as strong acidic solutions of HCl, HBr, and HI, at various temperatures. The extracted species in every case were postulated. Extraction chromatography behavior of Pa(V), its homologue Nb(V), and the chemically similar elements Zr(IV) and Hf(IV) were also studied in the case of TCMA. Radioactive isotopes were used for tracing the corresponding elements. Some separation alternatives were achieved.

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