Materials Transactions Online

Materials Transactions, Vol.58 No.05 (2017) pp.829-833
© 2017 The Japan Institute of Metals and Materials

Recovery of Silver from the Nitrate Leaching Solution of a Spent Ag/α-Al2O3 Catalyst by Solvent Extraction and Reduction

Pan-Pan Sun1, Bong-Jo Rho1 and Sung-Yong Cho1

1Department of Environment and Energy Engineering, Chonnam National University, Gwangju 61186, Republic of Korea

Nitric acid was employed to strip silver from loaded 5,8-diethyl-7-hydroxy-dodecan-6-oxime (LIX63) in the recovery of silver from a leaching solution of a spent Ag/α-Al2O3 catalyst. The loaded LIX63 was obtained by contacting the real leaching solution with 0.5 mol/dm3 LIX63 diluted in kerosene. In order to produce silver powder by reduction, the HNO3 in the stripping solution was recovered by extraction with tri 2-ethylhexyl amine (TEHA) followed by stripping with distilled water. Silver powder was obtained by reduction with 0.1 mol/dm3 L-ascorbic acid. A flowsheet was proposed to recover Ag from the leaching solution of the spent Ag/α-Al2O3 catalyst by solvent extraction and reduction with minimum waste emissions.

[doi:10.2320/matertrans.M2017019]

(Received 2017/01/17; Accepted 2017/02/20; Published 2017/04/25)

Keywords: silver, nitric acid, TEHA, solvent extraction, recovery

PDF(member)PDF (member) PDF(organization)PDF (organization) Order DocumentOrder Document Table of ContentsTable of Contents

REFERENCES

  1. A. Fornalczyk: J. Achievements Mater. Manuf. Eng. 55 (2012) 864-868.
  2. A.M. Sastre, A. Kumar and F.J. Alguacil: J. Chem. Technol. Biotechnol. 79 (2004) 306-310.
  3. M.S. Alam, K. Inoue, K. Yoshizuka, Y. Dong and P. Zhang: Hydrometallurgy 44 (1997) 245-254.
  4. O. Ortet and A.P. Paiva: Sep. Sci. Technol. 45 (2010) 1130-1138.
  5. S. Kedy, F. Kandil and N. Almhna: J. Chin. Chem. Soc. 59 (2011) 1-5.
  6. F. Xie, D. Lu, H. Yang and D. Dreisinger: Miner. Process. Extr. Metall. Rev. 35 (2014) 229-238.
  7. J. Hanzlík, J. Jehlička, O. Šebek, Z. Weishauptová and V. Machoviè: Water Res. 38 (2004) 2178-2184.
  8. L. Zhang, S. Yang, T. Han, L. Zhong, C. Ma, Y. Zhou and X. Han: Appl. Surf. Sci. 263 (2012) 696-703.
  9. M. Gurung, B.B. Adhikari, H. Kawakita, K. Ohto, K. Inoue and S. Alam: Hydrometallurgy 133 (2013) 84-93.
  10. K.C. Sole and J.B. Hiskey: Hydrometallurgy 37 (1995) 129-147.
  11. S. Laki, A.A. Shamsabadi and A. Kargari: Hydrometallurgy 160 (2016) 38-46.
  12. L. Zeng and C.Y. Cheng: Hydrometallurgy 98 (2009) 10-20.
  13. Y. Baba, Y. Umezaki and K. Inoue: J. Chem. Eng. of Jpn 19 (1986) 27-30.
  14. Y.I. Lee, S.H. Park, J.S. Kim, D.W. Kim and K.Y. Choi: Bull. Korean Chem. Soc. 20 (1999) 487-490.
  15. K. Ohto, E. Murakami, T. Shinohara, K. Shiratsuchi, K. Inoue and M. Iwasaki: Anal. Chim. Acta 341 (1997) 275-283.
  16. K.C. Sole, T.L. Ferguson and J.B. Hiskey: Solvent Extr. Ion Exch. 12 (1994) 1033-1050.
  17. K. Shimojo and M. Goto: Anal. Chem. 76 (2004) 5039-5044.
  18. V. Stankovic, L. Outarra, F. Zonnevijlle and C. Comninellis: Separ. Purif. Tech. 61 (2008) 366-374.
  19. E. Löfström-Engdahl, E. Aneheim, C. Ekberg, M. Foreman, G. Skarnemark, Z. Hájková and B. Grüner: Procedia Chem. 7 (2012) 239-244.
  20. T. Sato, K. Sato and M. Ito: Proc. Int. Solvent Extr. Conf. (1996) 665-670.
  21. C. Foulon, D. Pareau and G. Durand: Hydrometallurgy 51 (1999) 139-153.
  22. K.R. Barnard and N.L. Turner: Hydrometallurgy 109 (2011) 29-36.
  23. N.L. Turner and K.R. Barnard: Hydrometallurgy 117-118 (2012) 79-85.
  24. P.P. Sun, H.I. Song, T.Y. Kim, B.J. Min and S.Y. Cho: Ind. Eng. Chem. Res. 53 (2014) 20241-20246.
  25. D.F. Haghshenas, D. Darvishi, H. Rafieipour, E.K. Alamdari and A.A. Salardini: Hydrometallurgy 97 (2009) 173-179.
  26. C.H. Shin, J.Y. Kim, J.Y. Kim, H.S. Kim, H.S. Lee, D. Mohapatra, J.W. Ahn, J.G. Ahn and W.K. Bae: J. Hazard. Mater. 163 (2009) 729-734.
  27. R. Banda, T.H. Nguyen and M.S. Lee: Chem. Process Eng. 34 (2013) 153-163.
  28. T.H. Nguyen and M.S. Lee: Korean J. Met. Mater. 52 (2013) 799-803.
  29. S.P. Wu and S.Y. Meng: Mater. Chem. Phys. 89 (2005) 423-427.
  30. D. Pulak and B. Sukalyan: Int. J. Chem Tech Res. 3 (2011)1349-1358.
  31. D.S.R. Murthy and P.M. Prasad: Hydrometallurgy 42 (1996) 27-33.


[JIM HOME] [JOURNAL ARCHIVES]

© 2017 The Japan Institute of Metals and Materials
Comments to us : editjt@jim.or.jp