Banda, Raju Lee, Hwa Young Lee, Man Seung 2024-01-20T14:30:54Z 2024-01-20T14:30:54Z 2021-09-04 2012-07-18 0888-5885 https://pubs.kist.re.kr/handle/201004/129059 Liquid liquid extraction studies have been performed to investigate the selective extraction of zirconium (Zr) and hafnium (Hf) in hydrochloric acid medium. For this purpose, several amine-based extractants were used at varying concentrations of extractants and HCl. Among the tested extractants, Alamine 336 showed good selectivity for Zr over Hf and led to the highest separation factor. A McCabe-Thiele diagram was constructed for the extraction of Zr with Alamine 336 in kerosene, and the tested batch simulation of counter-current extraction studies showed that the extractions of Zr and Hf impurities were 98.5% and 12.5%, respectively. The coextracted Hf was scrubbed with dilute H2SO4 solution, and complete stripping of Zr was successfully achieved from the loaded organic phase by simple contact with 1 M HCl solution. English AMER CHEMICAL SOC LIQUID-LIQUID-EXTRACTION HAFNIUM SEPARATION AQUEOUS-SOLUTION ZIRCONIUM MIXTURES MEDIA Separation of Zr from Hf in Hydrochloric Acid Solution Using Amine-Based Extractants Article 10.1021/ie3008264 1 INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, v.51, no.28, pp.9652 - 9660 INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 51 28 9652 9660 scie scopus 000306452600023 2-s2.0-84863892107 Engineering, Chemical Engineering Article LIQUID-LIQUID-EXTRACTION HAFNIUM SEPARATION AQUEOUS-SOLUTION ZIRCONIUM MIXTURES MEDIA zirconium hafnium separation extractant