Solvent extraction of Zirconium and hafnium with 1 and 2-octanol: a comparative study
Loading...
Date
Authors
Kabangu Mpinga, John
Lubbe, Simon J.
Crouse, Philippus L.
Journal Title
Journal ISSN
Volume Title
Publisher
The Italian Association of Chemical Engineering
Abstract
Comparative solvent extraction studies of Zr and Hf were carried out from acidic chloride and potassium
fluoride solutions with 1 or 2-octanol as extractants. The extraction process was experimentally investigated
as a function of contact time, hydrochloric acid concentration, sulfuric acid concentration, hydrofluoric acid
concentration, nitric acid concentration, amount of potassium fluoride added and organic-to-aqueous phase
ratio. The results show that zirconium is preferentially extracted into the organic phase. Under the optimal
operating conditions of 10 % HCl, 1.5 M KF, 15 minutes and an organic-to-aqueous phase ratio of 2:1, the
extraction percentage of zirconium and hafnium is 94.3 % of Zr and 64.3 % of Hf and a separation factor of
9.2 for 2-octanol and 93.1 of Zr and 60.9 % of Hf and a separation factor of 8.7 %. 2-octanol shows a slightly
higher extraction percentage and separation factor over 1-octonal.
Description
Keywords
Zirconium, Hafnium, 2-Octanol, Separation
Sustainable Development Goals
Citation
Kabangu J.M., Lubbe S., Crouse P.L., 2019, Solvent Extraction of Zirconium and Hafnium with 1 and 2-octanol: a
Comparative Study, Chemical Engineering Transactions, 75, 607-612 DOI:10.3303/CET1975102.