Effect of solvent on the extraction of lanthanides with picrolonic acid
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Akbar Ali
Abstract
Extraction of Eu(III), Tb(III) and Lu(III), as representatives of lanthanides, has been studied with picrolonic acid [1-p-nitrophenyl-3-methyl-4-nitro-5-pyrazolone (HPA)] as extractant in various solvents such as acetylacetone (ACAC), 1-octanol (ONL), n-hexanol (HNL), 1-butanol (nBNL), 2-butanol (iBNL), cyclohexanone (CHN), n-butyl ether (BE), di(1,2-dichloroethyl)ether (DCEE), diisobutylketone (DIBK), benzene and toluene from aqueous solution of pH 1–2, having ionic strength of 0.01 mol dm−3 (K+/H+, Cl−). The composition of the extracted adduct has been determined as M(PA)3 except in DCEE where it is M(PA)3·(HPA). Extraction constants (logߙKex) were calculated and on the basis of logߙKex, the role of diluents in the extraction process has been discussed. The solvents with respect to their extractability of the rare earth metal ions can be arranged in the order ACAC>DIBK>BE>DCEE>ONL>HNL>CHN.
© by Oldenbourg Wissenschaftsverlag, Islamabad, Germany
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Articles in the same Issue
- New cross section measurements for the production of the Auger electron emitters 77Br and 80mBr
- Development of a SISAK extraction system for chemical studies of element 108, hassium
- Spectroscopic study on the mononuclear hydrolysis species of Pu(VI) under oxidation conditions
- Origin assessment of uranium ore concentrates based on their rare-earth elemental impurity pattern
- Performance of the mesh-type liquid cadmium cathode structure for the electrodeposition of uranium from the molten salt
- Temperature effect on U(VI) sorption onto Na-bentonite
- Rapid separation method for actinides in emergency soil samples
- Effect of solvent on the extraction of lanthanides with picrolonic acid
- Separation and purification of no-carrier-added arsenic from bulk amounts of germanium for use in radiopharmaceutical labelling
- Labelling and optimization of PHOTOFRIN® with 99mTc
- Appreciation to Referees
