Precipitation of EDTA from heavy metal complex solutions and its regeneration

  • O. Gyliene Institute of Chemistry, Vilnius, Lithuania
  • J. Aikaite Institute of Chemistry, Vilnius, Lithuania
  • O. Nivinskiene Biocentras, Inc., Vilnius, Lithuania
Keywords: EDTA, regeneration, insoluble compounds, copper ions, electrolysis

Abstract

A method is proposed for the removal of EDTA (ethylenediaminetetraacetate) in the form of the insoluble compound Cu₂EDTA·4H₂O from complex solutions of heavy metals, such as Ni(II), Zn(II), Co(II), Cd(II), Ca(II), and Mg(II). The formation of the insoluble Cu₂EDTA·4H₂O precipitate occurs in the pH range of 3 to 5.5. After dissolving the precipitate in water, acid, or alkali, copper can be easily removed from the resulting suspensions by electrolysis.

Published
2004-08-30
How to Cite
Gyliene, O., Aikaite, J., & Nivinskiene, O. (2004). Precipitation of EDTA from heavy metal complex solutions and its regeneration. Technology and Design in Electronic Equipment, (4), 54-56. Retrieved from https://www.tkea.com.ua/index.php/journal/article/view/TKEA2004.4.54
Issue
No. 4 (2004): Tekhnologiya i konstruirovanie v elektronnoi apparature
Section
Articles

Copyright (c) 2004 O. Gyliene, J. Aikaite, O. Nivinskiene

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