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- Title
Adsorption of U(VI) from aqueous solution by sulfonated ordered mesoporous carbon.
- Authors
Zhang, Zhi-Bin; Yu, Xiao-Feng; Cao, Xiao-Hong; Hua, Rong; Li, Min; Liu, Yun-Hai
- Abstract
The sulfonated mesoporous carbon (CMK-3-SOH) prepared by functionalizing mesoporous carbon (CMK-3) via vapor transfer method has been explored for the removal and recovery of uranium from aqueous solutions. The influences of different experimental parameters such as solution pH, initial concentration, contact time and temperature on adsorption were investigated. The results showed that CMK-3-SOH has the highest uranium sorption capacity at initial pH of 5.0 and contact time of 120 min, and the adsorption process could be better described by the pseudo-second-order model and Langmuir isotherm. Selective adsorption studies showed that the CMK-3-SOH could selectively remove of U(VI), and the selectivity coefficients of mesoporous carbon in the presence of co-existing ions, Mg(II), Zn(II), Mn(II), Cu(II), Ni(II), Sr(II) and Hg(II) improved after functionalization.
- Subjects
ADSORPTION (Chemistry); URANIUM; AQUEOUS solutions; MESOPOROUS materials; CARBON; LANGMUIR isotherms; SULFONATION
- Publication
Journal of Radioanalytical & Nuclear Chemistry, 2014, Vol 301, Issue 3, p821
- ISSN
0236-5731
- Publication type
Article
- DOI
10.1007/s10967-014-3237-4