Solvent Extraction of Zirconium and Hafnium from Hydrochloric Acid Solutions Using Acidic Organophosphorus Extractants and Their Mixtures with TOPO

Title
Solvent Extraction of Zirconium and Hafnium from Hydrochloric Acid Solutions Using Acidic Organophosphorus Extractants and Their Mixtures with TOPO
Authors
Ling Yun Wang이화영Man Seung Lee
Keywords
zirconium; hafnium; acidic organophosphorus extractant; trioctylphosphine oxide (TOPO); synergism
Issue Date
2013-07
Publisher
Materials transactions
Citation
VOL 54, NO 8, 1460-1466
Abstract
Solvent extraction of Zr and Hf from hydrochloric acid solution was performed by using acidic organophosphorus extractants and their mixtures with TOPO. In the HCl concentration range from 1 to 4 mol/d㎥, solvation reaction was responsible for the extraction of Zr and Hf by single acidic organophosphorus extractants, such as D2EHPA, PC88A and Cyanex272. Although the extraction percentage of both metals by single and mixture of extractants increased with the increase of HCl concentration, the dependence of separation factor on the HCl concentration showed opposite behavior in both extractant systems. Synergistic extraction of Zr and Hf was obtained by the mixtures. Single Cyanex272 and a mixture of Cyanex272 and TOPO were found to be the most efficient in separating the two metals.
URI
http://pubs.kist.re.kr/handle/201004/45769
ISSN
13459678
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE