Separation of Silver (I) and Zinc(II) from Nitrate Solutions by Solvent Extraction with LIX63

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  • Sun Pan-Pan
    Department of Environment and Energy Engineering, Chonnam National University
  • Min Byoung-Jun
    Department of Environment and Energy Engineering, Chonnam National University
  • Kim Sung-Tae
    Department of Environment and Energy Engineering, Chonnam National University
  • Cho Sung-Yong
    Department of Environment and Energy Engineering, Chonnam National University

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Abstract

<p>The separation of Ag(I) and Zn(II) from nitrate solutions using 5,8-diethyl-7-hydroxy-dodecan-6-oxime (LIX63) as the extractant was investigated as a function of nitric acid (HNO3) and extractant concentrations. Selective extraction of Ag(I) over Zn(II) was achieved with LIX63 when HNO3 concentration was in the range 0.001–1 mol/dm3. Quantitative stripping of Ag(I) from loaded LIX63 was accomplished using 5 mol/dm3 of HNO3. The McCabe-Thiele diagrams for the extraction and stripping of Ag(I) with LIX63 were constructed, and the results were verified by simulated cross-current extraction and stripping experiments. Finally, Ag(I) and Zn(II) solutions of high purity (> 99.95%) were obtained.</p>

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 58 (2), 287-290, 2017

    The Japan Institute of Metals and Materials

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