Separations: Materials, Devices, and Processes

Silica-based iminodiacetic acid functionalized adsorbent for Ni hydrometallurgical extraction of nickeliferous laterite

  1. Xin Li1,2,*,
  2. Baohua Li1,
  3. Shan Wu1,2,
  4. Jingbing Li1,
  5. Qitai Xu1,
  6. Zhiqiang Yang3,
  7. Yuqiang Liu3,
  8. Shaohua Wang3,
  9. Dongsheng Chen1,*

Article first published online: 2 MAR 2012

DOI: 10.1002/aic.13774

Issue

AIChE Journal

AIChE Journal

Volume 58, Issue 12, pages 3818–3824, December 2012

Additional Information

How to Cite

Li, X., Li, B., Wu, S., Li, J., Xu, Q., Yang, Z., Liu, Y., Wang, S. and Chen, D. (2012), Silica-based iminodiacetic acid functionalized adsorbent for Ni hydrometallurgical extraction of nickeliferous laterite. AIChE J., 58: 3818–3824. doi: 10.1002/aic.13774

Author Information

  1. 1

    Engineering and Technology Research Center for Inorgnic Type Ion-Exchange Resin, Henan University, Kaifeng 475004, People's Republic China

  2. 2

    School of the Chemistry and Environment, Jiaying University, Meizhou 514015, People's Republic China

  3. 3

    Jinchuan Group Limited, Jinchang 737100, People's Republic China

*Engineering and Technology Research Center for Inorgnic Type Ion-Exchange Resin, Henan University, Kaifeng 475004, People's Republic China

Publication History

  1. Issue published online: 8 NOV 2012
  2. Article first published online: 2 MAR 2012
  3. Accepted manuscript online: 10 FEB 2012 11:51AM EST
  4. Manuscript Revised: 19 JAN 2012
  5. Manuscript Received: 2 DEC 2011

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Keywords:

  • adsorbent;
  • nickel;
  • low grade;
  • nickeliferous laterite;
  • hydrometallurgical extraction

Abstract

A novel silica-based iminodiacetic acid functionalized adsorbent was fabricated and then used to nickel hydrometallurgical extraction for low-grade nickeliferous laterites. The surface morphology of the adsorbent was characterized by scanning electron microscopy. The adsorption experiment indicated a maximum nickel load capacity of about 0.45 mmol/g. Analysis of adsorption thermodynamic and kinetics revealed a spontaneous adsorption process driven by entropy increase, and limited by film diffusion. Semi-industrial scale column experiments revealed that the Ni2+ in the acidic leach liquor of low-grade nickeliferous laterites may be efficiently extracted by the iminodiacetic acid functionalized adsorbent, if the Fe3+ ions existing in the acidic leach liquor were previously reduced to be Fe2+ by sodium sulfite. This environmentally safe adsorbent may supplant the traditional solvent extraction process for low-grade nickeliferous laterites. © 2012 American Institute of Chemical Engineers AIChE J, 2012

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