Abstract
Abstract Solvent extraction experiments have been performed to separate Nd and Pr from chloride leaching solution of monazite sandusing PC88A and D2EHPA. For this purpose, the effect of the saponification of PC88A and D2EHPA on the extraction and sep-aration of the two metals were studied by varying the pH of aqueous solution. In the experimental ranges conducted in this study,the distribution coefficients of Nd were higher than those of Pr and separation factor value increased with the increase of solutionpH. Saponification of PC88A enhanced the distribution coefficients of Nd and Pr as well as the separation factor. Saponificationof D2EHPA had some effect on the extraction of the two metals but little effect on the separation factor.Key words : Solvent extraction, PC88A, D2EHPA, Saponification, Separation *Received : August 19, 2013 · Revised : September 9, 2013 · Accepted : September 23, 2013Corresponding Author : Man-Seung Lee (E-mail : mslee@mokpo.ac.kr)Department of Advanced Materials Science & Engineering, Mokpo National University, 61 Dorim-ri, Chungkye-myun, Muan-gun,Chonnam, 534-729, KoreaTel : +82-62-450-2492 / Fax : +82-62-450-2498 ⓒThe Korean Institute of Resources Recycling. All rights reserved. This is an open-access article distributed under the termsof the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/), which permitsunrestricted non-commercial use, distribution and reproduction in any medium, provided the original work is properly cited.
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