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Original Articles

Adsorption of UO22+ from Aqueous Solutions by Inorganic Exchangers

Pages 381-388 | Published online: 22 Jul 2008
 

Abstract

Various natural and treated clays as well as some synthetic exchangers have been used to remove UO2 2+ from aqueous solutions. Different factors which affect the adsorption process such as time, pH, competing ions … etc were studied. The mechanism of adsorption was found to be under film diffusion control. It was concluded that the naturally occuring clays are suitable as adsorbent for UO2 2+ and their capacities are comparable, if not better than those treated clays or synthetic exchangers.

Es werden unterschiedliche natürliche und vorher behandelte Tonarten als auch einige synthetische Anstauschcr zur Abtrennung von UO2 2+ aus wäβrigen Lösungen eingeselzt. Verschiedene Faktoren, die den Adsorptionsprozeβ beeinflussen, wie die Zeitdauer, der pH-Wert, andere konhurrierende Ionen u. ä. m. wurden untersucht. Es stellte sich heraus, daβ der Adsorptionsmechanismus durch eine Filmdiffusion kontrolliert wird. Dienatürlich vorkommenden Tonesind durchaus als Adsorbentien fur UO2 2+ geeignet und ihre Aufnahmekapzitäten sind vergleichbar, wenn nicht mit unter besser als jene, die bei behandelten Tonen oder synthetischen Austauschem gefunden werden.

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