Kinetics of chromium(III) transport through a liquid membrane containing DNNSA as a carrier

Int J Mol Sci. 2009 Mar;10(3):964-75. doi: 10.3390/ijms10030964. Epub 2009 Mar 9.


Kinetics of Cr(III) ions transport through a bulk liquid membrane containing dinonylnaphthalenesulfonic acid (DNNSA) as a carrier, flowing over aqueous phases, has been examined. Special attention has been paid to the effect of the membrane's velocity flow on the chromium concentration decrease in a feed phase. For the description of relationships of chromium(III) concentration in particular phases with the time, a model based on the assumption of consecutive first-order reactions was proposed. Satisfactory compatibility of experiments and model results have been obtained both for the membrane flow velocities below 0.0034 m.s(-1) when the interfaces begin to fluctuate slightly and for low initial Cr(III) concentration in the feed phase.

Keywords: Transport kinetics of chromium(III); bulk liquid membrane; dinonylnaphthalenesulfonic acid (DNNSA).

MeSH terms

  • Chromium / chemistry*
  • Hydrogen-Ion Concentration
  • Kinetics
  • Lipid Bilayers / chemistry*
  • Lipid Bilayers / metabolism
  • Models, Theoretical
  • Naphthalenesulfonates / chemistry*
  • Time Factors


  • Lipid Bilayers
  • Naphthalenesulfonates
  • Chromium