Issue
Korean Journal of Chemical Engineering,
Vol.22, No.6, 894-898, 2005
Chromium(VI) Removal in a Semi-Continuous Process of Hollow Fiber Membrane with Organic Extractants
.Chromium(VI) extraction from aqueous metal solution was experimentally studied by using a hollow fiber supported liquid membrane module. Organic extractants of D2EHPA, TBP, Lix79 and TOA were used to investigate the extraction performance. The extraction efficiencies of single and multiple component systems were examined with single or multiple extractants, and the role of multiple extraction operations and the difference between batch and continuous processes were inspected to find the optimum extraction condition. The experimental outcome indicates that the extraction process is controlled by aqueous phase mass transfer and multiple extraction operations do not reduce the extraction efficiency. The coexisting elements give no significant effect on chromium removal, while the mixed extractants of D2EHPA and TBP enhance the extraction efficiency by 84%. The efficiencies of batch and continuous extraction processes are nearly identical.
[References]
  1. Alguacil FJ, Caravaca C, Martin MI, J. Chem. Technol. Biotechnol., 78(10), 1048, 2003
  2. Aravindhan R, Madhan B, Rao JR, Nair BU, Ramasami T, Environ. Sci. Technol., 38(1), 300, 2004
  3. Choi DW, Kim YH, Korean J. Chem. Eng., 20(4), 768, 2003
  4. Cichy W, Szymanoski J, Environ. Sci. Technol., 36(9), 2088, 2002
  5. Dahuron L, Cussler EL, AIChE J., 34(1), 130, 1988
  6. Devi NB, Nathsarma KC, Chakravortty V, Hydrometallurgy, 54(2-3), 117, 2000
  7. Fontas C, Salvado V, Hidalgo M, Ind. Eng. Chem. Res., 41(6), 1616, 2002
  8. Gherrou A, Kerdjoudi H, Molinari R, Drioli E, Sep. Purif. Technol., 28(3), 235, 2002
  9. Ho WS, Poddar TK, Environ. Prog., 20(1), 44, 2001
  10. Ho WSW, Adv. Membrane Tech. Annals N. Y. Acad. Sci., 984, 97, 2003
  11. Juang RS, Huang HC, J. Membr. Sci., 156(2), 179, 1999
  12. Koopman C, Witkamp GJ, Sep. Sci. Technol., 37(6), 1273, 2002
  13. Kumar A, Haddad R, Benzal G, Ninou R, Sastre AM, J. Membr. Sci., 174(1), 17, 2000
  14. Narin I, Soylak M, Elci L, Dogan M, Anal. Lett., 34(11), 1935, 2001
  15. Prakorn R, Ura P, Korean J. Chem. Eng., 20(4), 724, 2003
  16. Prakorn R, Kwanta N, Ura P, Korean J. Chem. Eng., 21(6), 1212, 2004
  17. Vincent T, Guibal E, Solvent Extraction Ion Exchange, 18(6), 1241, 2000
  18. Weerawat P, Nattaphol V, Ura P, Korean J. Chem. Eng., 20(6), 1092, 2003
  19. Zhang PW, Yokoyama T, Itabashi O, Wakui Y, Suzuki TM, Inoue K, J. Power Sources, 77(2), 116, 1999