Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1007/s12665-014-3258-x |
| Document | Shareable Link |
| Title (Primary) | Sorption of uranyl and arsenate on SiO2, Al2O3, TiO2 and FeOOH |
| Author | Nair, S.; Karimzadeh, L.; Merkel, B.J. |
| Source Titel | Environmental Earth Sciences |
| Year | 2014 |
| Department | BOPHY |
| Volume | 72 |
| Issue | 9 |
| Page From | 3507 |
| Page To | 3512 |
| Language | englisch |
| UFZ wide themes | RU1 |
| Abstract | Migration of uranium and arsenic in aquatic environments is often controlled by sorption on minerals present along the water flow path. To investigate the sorption behaviour, batch experiments were conducted for uranium and arsenic as single components and also solutions containing both uranium and arsenic in the presence of SiO2, Al2O3, TiO2 and FeOOH at a pH ranging from 3 to 9. In solutions containing only U(VI) or As(V) with the minerals, the sorption of U(VI) was low at acidic pH range and increases with increasing pH, whereas As(V) showed opposite sorption behaviour to Al2O3, TiO2 and FeOOH from acidic pH range to alkaline condition. For the As(V)–SiO2 system, the sorption was low for almost all pH. Sorption of U(VI) and As(V) on SiO2 and FeOOH is almost similar in solutions containing either U(VI) or As(V) separately, or both together. In the U(VI)–As(V)–Al2O3 system, a significant retardation in uranyl sorption and an enhancement in arsenate sorption on Al2O3 were observed for a wide range of pH. The sorption behaviour of U(VI) and As(V) was changed when Al2O3 was replaced by TiO2, where an increase in sorption was observed for both elements. The sorption behaviour of uranyl and arsenate in the U(VI)–As(V)–TiO2 system gives evidence for the formation of uranyl–arsenate complexes. The change in sorption retardation/enhancement of U(VI) and As(V) could be explained by the formation of uranyl–arsenate complexes or due to the competitive sorption between uranyl and arsenate species. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=15525 |
| Nair, S., Karimzadeh, L., Merkel, B.J. (2014): Sorption of uranyl and arsenate on SiO2, Al2O3, TiO2 and FeOOH Environ. Earth Sci. 72 (9), 3507 - 3512 10.1007/s12665-014-3258-x |
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