Removal of uranium and thorium from aqueous solution by ultrafiltration

Studies on removal of U(VI) and Th(IV) from aqueous solution have been carried out by ultrafiltration (UF) and dendrimer assisted ultrafiltration (DAUF) using regenerated cellulose acetate membrane and PAMAM [poly(amido)amine] dendrimer chelating agent. In UF, the U(VI) and Th(IV) are removed from a...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2015-01, p.441
Main Authors: Ilaiyaraja, P, Deb, Ashish Kumar Singha, Ponraju, D
Format: Article
Language:English
Subjects:
Cellulose
Uranium
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Summary:Studies on removal of U(VI) and Th(IV) from aqueous solution have been carried out by ultrafiltration (UF) and dendrimer assisted ultrafiltration (DAUF) using regenerated cellulose acetate membrane and PAMAM [poly(amido)amine] dendrimer chelating agent. In UF, the U(VI) and Th(IV) are removed from aqueous solution by adsorption/mass deposition on the membrane at pH > 4. In DAUF, the water soluble PAMAM dendrimer chelating agent effectively concentrates these metal ions in retentate thereby preventing the mass deposition on membrane. At acidic pH (≤ 3), the binding of metal ions with PAMAM dendrimer is very weak and hence PAMAM can be regenerated and reused. Keywords: Ultrafiltration * PAMAM * Uranium * Thorium * Metal ion speciation * Dendrimer
ISSN:0236-5731
DOI:10.1007/s10967-014-3462-x