Extraction of Lanthanum and Samarium from Nitrate Medium by some Commercial Organophosphorus Extractants

The extraction of lanthanum(III) and samarium(III) from nitrate solutions by some phosphine oxide compounds (Cyanex 921, Cyanex 923, and Cyanex 925) in kerosene was investigated. The influence of the different factors affecting the extraction was studied in detail. The extraction of these metals usi...

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Published inSolvent extraction and ion exchange Vol. 25; no. 2; pp. 225 - 240
Main Authors El-Nadi, Y. A., El-Hefny, N. E., Daoud, J. A.
Format Journal Article
LanguageEnglish
Published Taylor & Francis Group 01.03.2007
Subjects
Cyanex 921
Cyanex 923
Cyanex 925
extraction
La(III)
Sm(III)
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Summary:The extraction of lanthanum(III) and samarium(III) from nitrate solutions by some phosphine oxide compounds (Cyanex 921, Cyanex 923, and Cyanex 925) in kerosene was investigated. The influence of the different factors affecting the extraction was studied in detail. The extraction of these metals using the above extractants was compared and the sequence of extraction was found to be Cyanex 921>Cyanex 923≫Cyanex 925. The stripping percent of La(III) and Sm(III) by 0.75 M HNO 3 from the loaded organic phase after two stages were 72% and 5.2%, respectively, which could enable a good separation between these two lanthanides.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0736-6299
1532-2262
DOI:10.1080/07366290601169485