ADSORPTION OF URANIUM FROM AQUEOUS-SOLUTIONS USING ACTIVATED CARBON

Citation
Wa. Abbasi et M. Streat, ADSORPTION OF URANIUM FROM AQUEOUS-SOLUTIONS USING ACTIVATED CARBON, Separation science and technology, 29(9), 1994, pp. 1217-1230
Citations number
48
Categorie Soggetti
Engineering, Chemical","Chemistry Analytical
ISSN journal
01496395
Volume
29
Issue
9
Year of publication
1994
Pages
1217 - 1230
Database
ISI
SICI code
0149-6395(1994)29:9<1217:AOUFAU>2.0.ZU;2-1
Abstract
The adsorption of uranium from aqueous solution has been investigated using conventional commercially available activated carbons. It was fo und that treatment with hot nitric acid oxidized the surface of activa ted carbon and significantly increased the adsorption capacity for ura nium in near-neutral and slightly acidic nitrate solutions. Equilibriu m data were fitted to a simplified Freundlich isotherm for the purpose of comparison of oxidized and as-received samples. The decontaminatio n of aqueous solutions was investigated in small column experiments. A n ion-exchange mechanism of uranium sorption from aqueous solution is discussed.