Extractive separation of La and Nd using Ionic Liquid as extractant

Kumari, Aarti and Sinha, Manish K and Sahu, S K and Pandey, B D (2014) Extractive separation of La and Nd using Ionic Liquid as extractant. In: 18th International Conference on Non-ferrous Minerals & Metals -2014, 11-12 July, 2014, Nagpur.



Significant amount of Rare Earth Metals (REMs) are used in magnets, batteries, tube lights, catalyst etc. due to their unique features. Therefore, it is necessary to develop a process which can extract and separate the individual REMs efficiently. The present investigation deals with the solvent extraction and separation of light rare earth elements such as La and Nd from the chloride medium using an ionic liquid(IL), [R3N+.Cy272-] as an extractant. Various parameters were investigated to optimize the condition for separating La(III) and Nd(III) of 10-4M concentration each. At pH 4.0, 90% Nd(III) and 20% La(III) were extracted from the chloride solution. The pH0.5 values for La(III) and Nd(III) were found to be 4.5 and 3.7 respectively. Extraction of La(III) and Nd(III) increased with the increase in IL concentration. At pH 4.5 and IL concentration of 0.01M separation factor (βNd/La) Nd(III) over La(III) was found to be 49. This shows that synthesized ionic liquid has sufficient potential to separate lighter lanthanides (e.g. La and Nd) from their mixed solutions generated during the processing of the REMs from primary or secondary resources.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Rare earths, Ionic Liquid, Extractants
Divisions:Metal Extraction and Forming
ID Code:7718
Deposited By:Ms. Aarti Kumari
Deposited On:17 Nov 2017 16:21
Last Modified:17 Nov 2017 16:21
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