Journal
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
Volume 313, Issue 1, Pages 113-121Publisher
SPRINGER
DOI: 10.1007/s10967-017-5283-1
Keywords
Uranium; Saline lake brine; Amidoximated silica; Sorption
Funding
- National Natural Science Foundation of China [11505250, 11575260, 11205216]
- Innovation Key Program of the Chinese Academy of Sciences [KJCX2-YW-N49-2, KJCX2-YW-N50-3]
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A series of silica sorbents with different content of amidoxime groups were prepared through co-condensation method and applied to extract uranium from saline lake brine. The optimum amidoxime group content was determined and effects of pH on uranium sorption were investigated. Sorption kinetic and isotherms were also investigated. XPS analysis indicated that the adsorption mechanism of uranium was attributed to the interaction between uranyl ion and N in the amidoxime. Amidoximated silica could efficiently absorb the naturally occurring uranium in the saline lake brine samples from Qinghai, China.
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