Liquid-liquid extraction of trivalent actinides and lanthanides with mixtures of N-benzoyl-N-phenyl hydroxylamine and neutral donors

1987 ◽  
Vol 109 (2) ◽  
pp. 329-335 ◽  
Author(s):  
J. N. Mathur ◽  
P. K. Khopkar
Keyword(s):  
Liquid Extraction ◽  
Liquid Liquid Extraction ◽  
Trivalent Actinides

scholarly journals Assessment of ligand extraction properties: an intercomparison campaign amongst EUROPARTners

2008 ◽  
Vol 96 (4-5) ◽  
Author(s):  
Clement Hill ◽  
Jean-F. Desreux ◽  
Christian Ekberg ◽  
Amparo Glez Espartero ◽  
M. Galetta ◽  
...  
Keyword(s):  
Metal Cation ◽  
Cation Distribution ◽  
Liquid Extraction ◽  
The Third ◽  
Liquid Liquid Extraction ◽  
Trivalent Actinides ◽  
Extraction Properties ◽  
Integrated Project

An intercomparison campaign was organized at the beginning of the European FP6 EUROPART Integrated Project, among the partners involved in the assessment of the extracting properties of novel ligands, in order to check their accuracy and reliability when determining metal cation distribution ratios. Three different extracting systems, presenting various selectivity and affinity towards trivalent actinides were selected: (i) CMPO, (ii) TPTZ and (iii) BTP. Although some differences could be pointed out in the implementation of liquid–liquid extraction tests, the distribution ratios measured by the nine partners were fairly reproducible (<20% deviation) for the first two extracting systems. However, large discrepancies occurred when testing the third extracting system, due to its strong hydrolytic instability, thus pointing out the difficulty of assessing extraction properties of instable ligands.

Comparison of Sorption and Extraction Methods for Recovery of Trace Organics from Water

1983 ◽  
Vol 15 (6-7) ◽  
pp. 149-159 ◽  
Author(s):  
V C Blok ◽  
G P Slater ◽  
E M Giblin
Keyword(s):  
Solvent Extraction ◽  
Methylene Chloride ◽  
Extraction Methods ◽  
Liquid Extraction ◽  
Standard Mixture ◽  
Liquid Liquid Extraction ◽  
Trace Organics ◽  
Tenax Gc

Several commercially available adsorbents were compared with solvent extraction methods for their utility in recovering trace organics from water. The adsorbents examined included Amberlite XAD-2, XAD-4 and XAD-8, Ambersorb XE340 and XE348 and Tenax-GC. All were found to produce high artifact levels, even after extensive clean-up, making them unsuitable for the analysis of trace organics in water. Quantitatively, Likens-Nickerson or continuous liquid-liquid extraction with méthylene chloride gave better recoveries than the adsorbents. Qualitatively, extractive methods were preferred as they yielded much lower levels of impurities than the adsorbents. These methods of recovering trace organics were evaluated using a standard mixture of compounds added to the water at a level of 55 µg/l. Likens-Nickerson extraction gave comparable recoveries of this mixture at 55 µg/l and 11 µg/l.

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