DBPapers
DOI: 10.5593/sgem2017/51/S20.054

Er(III) SOLVENT SUBLATION FROM DILUTE AQUEOUS SOLUTIONS

O. Lobacheva, I. Berlinskii
Wednesday 13 September 2017 by Libadmin2017

References: 17th International Multidisciplinary Scientific GeoConference SGEM 2017, www.sgem.org, SGEM2017 Conference Proceedings, ISBN 978-619-7408-08-9 / ISSN 1314-2704, 29 June - 5 July, 2017, Vol. 17, Issue 51, 409-416 pp, DOI: 10.5593/sgem2017/51/S20.054

ABSTRACT

The development of the small and poor deposits of rare-earth elements can be useful when creating effective, waste-free technology, requiring the solution of actual tasks on the modern stage of development of this kind of industry. The paper presents the possibility of the removal of the Er+3 from dilute aqueous solutions by adsorption-bubble method-Solvent Sublation (SS) using sodium dodecyl sulfate (NaDS). A theoretical and experimental investigation of SS in solutions of the nitrates of Er+3 with NaDS, used as a transport agent for the target component is determined. SS process kinetic laws are defined in the solutions containing Er+3 and surface-active substance. Getting dependencies of the distribution coefficient of the erbium (III) in the process SS of pH of the equilibrium aqueous phase will allow us to predict the direction of the process of REE extraction. Comparison of pH of extraction the pH of hydrate formation allows concluding, in what form the extracted Er+3 from solutions of hydrometallurgical processing of technogenic raw materials of the poor are removed.

Keywords: Rare earth elements (erbium cations (III)), surface active substance - sodium dodecyl sulfate, solvent sublation process