Studying the Kinetics and Equilibrium of Praseodymium (III) Sorption by Naturally Occurring Mordenite-Containing Tuff
N. M. KOZHEVNIKOVA
Baikal Institute of Nature Management, Siberian Bramch of the Russian Academy of Sciences,Ul. Sakhyanovoy 8, Ulan Ude 670047 (Russia)
E-mail: nicas@binm.bscnet.ru
Keywords: naturally occurring mordenite-containing tuff, praseodymium, kinetics, equilibrium
Pages: 293–296
Abstract
Kinetic laws inherent in the sorption of praseodymium (III) ions from sulphate solutions on mordenite containing tuff. Kinetic parameters for the sorption process were determined, and constructed absorption isotherms for praseodymium ions were obtained. It has been established that the rate-determining stage is presented both by external and internal diffusion. From dilute solutions (<0.002 mol/L) praseodymium can be extracted to a complete extent.
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