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3562589 
Journal Article 
Transport kinetics of Hg2+ through bulk liquid membrane using calix[4]arene ketone derivative as carrier 
Alpoguz, HK; Memon, S; Ersoz, M; Yilmaz, M 
2004 
1 
Separation Science and Technology
ISSN: 0149-6395
EISSN: 1520-5754 
39 
4 
799-810 
WOS:000220579000004 
In this article, calix[4]arene ketone derivative was used
as a carrier to transport Hg2+ ions from an aqueous solution into an aqueous receiving solution.
The kinetic parameters (k(1), k(2), R-m(max), t(max), J(d)(max), J(a)(max)) were investigated
with influence of temperature, the solvent, and stirring rate and analyzed in the formation of
two consecutive, irreversible first order reactions. The membrane entrance rate, k(1), and the
membrane exit rate, k(2), constants were increased with temperature and stirring rate and found
to be dependent on the solvent type in the order CH2Cl2 > CHCl3 > CCl4. The activation energy was
obtained as 5.28 kcal/mol from the slope of the Arrhenius plot for the case of maximum membrane
exit flux, J(a)(max). This value indicates that the process is controlled by species diffusion. 
liquid membrane; transport kinetics; temperature effects; diffusional rate-determining step; calixarenes