Obtaining yttrium oxide from waste superconducting chips at high temperatures and control of its chemical purity

Authors

  • Pedro Lam Centro de Estudios Aplicados al Desarrollo Nuclear
  • Juan R. Estévez Centro de Estudios Aplicados al Desarrollo Nuclear
  • Omar Cariaga Centro de Estudios Aplicados al Desarrollo Nuclear
  • Iván Pupo Centro de Estudios Aplicados al Desarrollo Nuclear
  • Diana R. López Centro de Estudios Aplicados al Desarrollo Nuclear
  • Janín Cruz Centro de Estudios Aplicados al Desarrollo Nuclear
  • Manuel J. Valdés Centro de Estudios Aplicados al Desarrollo Nuclear

Abstract

In this work the separation processes applied to recovery of Y from refuses of high temperatures ceramic superconductors (HTCS) are described, as well as to the determination by spectrophotometry of some rare earth elements (REE) present in the obtained product (Y2O3). During the first stage selective dissolution and precipitation methods in combination with a procedure of separation by cationic exchange in citric acid medium were utilized. In the second stage, previous to the colorimetric analysis of some present REE impurities in this compound, it was necessary to develop two separative serial processes by ionic chromatography in presence of several complexing organic agents (lactic acid, a-HIBA and citric acid). Simultaneously the determination by Energy Dispersive X-Ray Fluorescence of these elements was performed, as well as of Ba and Cu, in the itrium oxide.

Published

2022-11-07

How to Cite

Lam, P. ., R. Estévez, J., Cariaga, O. ., Pupo, I., R. López, D., Cruz, J. ., & J. Valdés, M. . (2022). Obtaining yttrium oxide from waste superconducting chips at high temperatures and control of its chemical purity. NATIONAL CENTER FOR SCIENTIFIC RESEARCH (CENIC) CHEMICAL SCIENCES JOURNAL, 30(1), 039-043. Retrieved from https://revista.cnic.edu.cu/index.php/RevQuim/article/view/2448

Issue

Section

Research articles