Journal
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
Volume 314, Issue 2, Pages 1039-1050Publisher
SPRINGER
DOI: 10.1007/s10967-017-5482-9
Keywords
Carboxymethyl konjac glucomannan; La3+; Al3+; Sorption; U(VI)
Funding
- special project of nuclear energy development [13zg610301]
- Longshan academic talent research support plan of Southwest University of Science and Technology [17LZX302]
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The microsphere of carboxymethyl konjac glucomannan immobilizing La3+ and Al3+ (CMKGM-La-Al) has been explored for sorption of U(VI). The maximum U(VI) sorption capacity of the microsphere is found to be 45.4 mg g(-1) at pH 5. Experimental data are fitted well with the linear Langmuir and linear pseudo-first-order kinetic model. The sorption process is endothermic, spontaneous and favorable. The possible mechanism of CMKGM modification and sorption of U(VI) on CMKGM-La-Al involves ion exchange and coordination reaction. The comparison between CMKGM-La-Al and other sorbents suggests that CMKGM-La-Al can be considered as an effective sorbent for U(VI) sorption.
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