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Kinetics of chromium(III) transport through a liquid membrane containing DNNSA as a carrier
Paweł Religa1, Roman Gawroński, Paweł Gierycz
1Technical University of Radom, Radom, Poland. p.religa@pr.radom.pl
Abstract:
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.
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