Magnetic Sorbents for Removing U(VI) from Aqueous Media

Sorption of U(VI) onto magnetic sorbents from aqueous media was studied. The limiting value of the U(VI) adsorption onto magnetite and magnetic potassium zinc hexacyanoferrate(II) at pH 5.0, calculated from the Langmuir equation, is 125 and 102 μmol g –1 , respectively. Natural components of waters,...

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Bibliographic Details
Published in:Radiochemistry (New York, N.Y.) N.Y.), 2018-05, Vol.60 (3), p.281-286
Main Authors: Puzyrnaya, L. N., Shunkov, V. S., Pshinko, G. N., Kosorukov, A. A.
Format: Article
Language:English
Subjects:
Calcium ions
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Magnetic separation
Nuclear Chemistry
Sorbents
Sorption
Uranium
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Summary:Sorption of U(VI) onto magnetic sorbents from aqueous media was studied. The limiting value of the U(VI) adsorption onto magnetite and magnetic potassium zinc hexacyanoferrate(II) at pH 5.0, calculated from the Langmuir equation, is 125 and 102 μmol g –1 , respectively. Natural components of waters, namely, Na + and Ca 2+ ions and fulvic acids at concentrations of up to 200 mg dm –3 , do not noticeably influence the U(VI) sorption onto magnetic sorbents. Owing to high selectivity (degree of recovery 87–91%) and possibility of separating the solid phase by magnetic separation, these sorbents show promise for removing U(VI) from mineralized mine water.
ISSN:1066-3622
1608-3288
DOI:10.1134/S1066362218030098