Issue

Vol. 25 No. 3 (2013): Vol 25 Issue 3

Copyright (c) 2013 AJC

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Extraction Separation of Gold in n-Propyl Alcohol- Ammonium Sulfate Aqueous Two-Phase System

https://doi.org/10.14233/ajchem.2013.13114
Pengzhi Xiang
Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, P.R. China ; School of Chemical Engineering, Yunnan Radio & TV University, No. 113 Xuefu Road, Kunming 650222, P.R. China
Yuntao Gao
School of Chemistry and Biotechnology, Yunnan Nationalities University, Kunming 650031, P.R. China

Corresponding Author(s) : Pengzhi Xiang

xpz20022002@yahoo.com.cn

Asian Journal of Chemistry, Vol. 25 No. 3 (2013): Vol 25 Issue 3

Abstract

The extraction behaviours of gold(III) in the n-propyl alcohol (PrOH)-ammonium sulfate aqueous two-phase extraction system were investigated. The amount of (NH4)2SO4 added, the initial volume of n-propyl alcohol and the acidity of the system are mainly factors that affect the formation and phase separation of the aqueous two-phase system. Gold(III) is found to be extracted into the n-propyl alcohol phase due to the formation of ion pair complex of [Au I4–·PrOH2+] in the presence of KI and in hydrochloric acid medium, an extraction rate of 99 % for gold can be achieved under optimized conditions. The proposed method has been applied to the separation of gold from large amount of base metals in synthetic sample and exhibits selectivity to gold(III).

Keywords

Extraction Separation Gold n-Propyl alcohol Ammonium sulfate
Xiang, P., & Gao, Y. (2012). Extraction Separation of Gold in n-Propyl Alcohol- Ammonium Sulfate Aqueous Two-Phase System. Asian Journal of Chemistry, 25(3), 1492–1496. https://doi.org/10.14233/ajchem.2013.13114
Download Citation
Endnote/Zotero/Mendeley (RIS)
BibTeX
References
  1. S.B. Dhoot, J.M. Dalal and V.G. Gaikar, Sep. Sci. Tech., 42, 1859 (2007).
  2. B.Y. Zaslavsky, Aqueous Two-Phase Partitioning, Physical Chemistry and Bioanalytical Application, Marcel Dekker: New York, USA (1995).
  3. M. Perumalsamy and T. Murugesan, Sep. Sci. Technol., 42, 2049 (2007).
  4. P.A. Aguinaga-Diaz and R.Z. Guzman, Sep. Sci. Technol., 31, 1483 (1996).
  5. R.D. Rogers, A.H. Bond and B.B. Cary, Sep. Sci. Technol., 28, 1091 (1993).
  6. R.D. Rogers, A.H. Bond, C.B. Bauer, J.H. Zhang and S.T. Griffin, J. Chromatogr. B, 680, 221 (1996).
  7. A. Yoshifumi, I. Mario and T. Shigeyuki, Talanta, 53, 645 (2000).
  8. J.H. Michael, P.J. Daniel and Y. Hong, Polymer, 46, 2567 (2005).
  9. A.J. Tong, Y. Wu, S.D. Tan, L.D. Li, A. Yoshifumi and T. Shigeyuki, Anal. Chim. Acta, 369, 11 (1998).
  10. S.H. Li, C.Y. He, H.W. Liu, K. Li and F. Liu, J. Chromatogr. B, 826, 58 (2005).
  11. C.Y. He, S.H. Li, H.W. Liu, K. Li and F. Liu, J. Chromatogr. A, 1082, 143 (2005).
  12. Z.H. Wang, Y. Zeng, M.H. Ma and C.L. Shu, J. Microchem., 60, 143 (1998).
  13. X.H. Liu, Y.T. Gao, R.S. Tang and W. Wang, Sep. Purf. Technol., 50, 263 (2006).
  14. Y.T. Gao and W. Wang, Chin. J. Appl. Chem., 19, 578 (2002 ) (in Chinese).
  15. Y.T. Gao, L.S. Wu and W. Wang, Chin. J. Anal. Chem., 29, 901 (2001) (in Chinese).
  16. S.X. Cai and C. Huang, Analysis of Noble Metals, Metallurgical Industry Press: Bejing, edn. 2 (1984) (in Chinese).
  17. S. Masami, N. Noriko, H. Tadashige, S. Daigo, E. Yukihiro and K. Satoshi, Anal. Chim. Acta, 427, 293 (2001).
  18. M. Mojski, Talanta, 25, 163 (1978).
  19. E. Hogfeldt, Stablity Constants of Metal-Ion Complexes: Part A: Inorganic Ligands, Pergamon Press: Oxford. New York, edn. 1 (1982).
  20. D.H. Logsdail and M.J. Slater, Solvent. Extr. Process., Elsevier: Oxford, Vol. 3, edn. 1 (1993).
  21. M. Zhong, B. Han and H. Yan, J. Supercrit. Fluids, 4, 265 (1991).
Read More
Author biographies is not available.
Download
PDF
Statistic
Read Counter : 0 Download : 0