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A molecular extraction process for vanadium based on tandem selective complexation and precipitation

Author

Listed:
  • Oluwatomiwa A. Osin

    (University of Calgary)

  • Shuo Lin

    (University of Calgary)

  • Benjamin S. Gelfand

    (University of Calgary)

  • Stephanie Ling Jie Lee

    (Tongji University
    Tongji University)

  • Sijie Lin

    (Tongji University
    Tongji University)

  • George K. H. Shimizu

    (University of Calgary)

Abstract

Recycling vanadium from alternative sources is essential due to its expanding demand, depletion in natural sources, and environmental issues with terrestrial mining. Here, we present a complexation-precipitation method to selectively recover pentavalent vanadium ions, V(V), from complex metal ion mixtures, using an acid-stable metal binding agent, the cyclic imidedioxime, naphthalimidedioxime (H2CIDIII). H2CIDIII showed high extraction capacity and fast binding towards V(V) with crystal structures showing a 1:1 M:L dimer, [V2(O)3(C12H6N3O2)2]2−, 1, and 1:2 M:L non-oxido, [V(C12H6N3O2)2] ̶ complex, 2. Complexation selectivity studies showed only 1 and 2 were anionic, allowing facile separation of the V(V) complexes by pH-controlled precipitation, removing the need for solid support. The tandem complexation-precipitation technique achieved high recovery selectivity for V(V) with a selectivity coefficient above 3 × 105 from synthetic mixed metal solutions and real oil sand tailings. Zebrafish toxicity assay confirmed the non-toxicity of 1 and 2, highlighting H2CIDIII’s potential for practical and large-scale V(V) recovery.

Suggested Citation

  • Oluwatomiwa A. Osin & Shuo Lin & Benjamin S. Gelfand & Stephanie Ling Jie Lee & Sijie Lin & George K. H. Shimizu, 2024. "A molecular extraction process for vanadium based on tandem selective complexation and precipitation," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-46958-6
    DOI: 10.1038/s41467-024-46958-6
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    1. Alexander S. Ivanov & Christina J. Leggett & Bernard F. Parker & Zhicheng Zhang & John Arnold & Sheng Dai & Carter W. Abney & Vyacheslav S. Bryantsev & Linfeng Rao, 2017. "Origin of the unusually strong and selective binding of vanadium by polyamidoximes in seawater," Nature Communications, Nature, vol. 8(1), pages 1-10, December.
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