Sorption of Neodymium from Nitrate Solutions by Humic Acids-Based Sorbent

  • A.G. Ismailova al-Farabi Kazakh National University, al-Farabi ave. 71, Almaty, Kazakhstan
  • G.Zh. Akanova al-Farabi Kazakh National University, al-Farabi ave. 71, Almaty, Kazakhstan
  • Kh.S. Tassibekov al-Farabi Kazakh National University, al-Farabi ave. 71, Almaty, Kazakhstan
  • D.Kh. Kamysbayev al-Farabi Kazakh National University, al-Farabi ave. 71, Almaty, Kazakhstan
  • B.T. Yermagambet Institute of Coal Chemistry and Technology LLP, 26 Akzhol Str., Astana, Kazakhstan
  • M.K. Kazankapova Institute of Coal Chemistry and Technology LLP, 26 Akzhol Str., Astana, Kazakhstan
  • Zh.M. Kassenova Institute of Coal Chemistry and Technology LLP, 26 Akzhol Str., Astana, Kazakhstan
Keywords: Neodymium, humic acids, carbon-containing sorbent, sorption efficiency

Abstract

 This work obtained a sorbent based on humic acids (HA) isolated from oxidized brown coals of the Maikuben deposit. The study of humic acids by IR spectroscopy showed the presence of various functional groups (OH-, COOH-) in the sorbent, which can enter into ion-exchange reactions with metals. Humic acids have been tested as a sorbent for neodymium. Neodymium sorption was carried out under static conditions from nitrate solutions. It was found that with a sorption time of 30 min and a solution pH is 1.0, the sorption efficiency of neodymium is 95.5%. A sorbent based on humic acids was used to separate neodymium from a solution obtained by dissolving electronic waste (neodymium magnet). SEM-analysis and mapping of the sorbent surface after neodymium sorption showed that neodymium was absent on the sorbent surface.

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Published
2022-12-12
How to Cite
[1]
A. Ismailova, “Sorption of Neodymium from Nitrate Solutions by Humic Acids-Based Sorbent”, Eurasian Chem.-Technol. J., vol. 24, no. 4, p. 313‒321, Dec. 2022.
Section
Articles