期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 17, 期 1, 页码 398-406出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cp04289a
关键词
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资金
- National Natural Science Foundation of China [11305218, 21225730, 91326202]
- Science Foundation of Institute of Plasma Physics, Chinese Academy of Sciences [DSJJ-13-YY01]
- Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection
- Priority Academic Program Development of Jiangsu Higher Education Institutions
Polyacrylamide (PAM) grafted graphene oxide (denoted as PAM/GO) was synthesized by the plasma-induced polymerization technique and applied as an adsorbent for the simultaneous removal of radionuclides from radioactive wastewater. The interactions of PAM/GO with the radionuclides U(VI), Eu(III) and Co(II) were studied, along with their sorption kinetics. The results indicated that radionuclide sorption on PAM/GO was affected by the solution pH and ionic strength. The maximum sorption capacities of U(VI), Eu(III) and Co(II) on PAM/GO (0.698, 1.245 and 1.621 mmol g(-1), respectively) at pH = 5.0 +/- 0.1 and T = 295 K were much higher than those of radionuclides on GO and other adsorbents. The thermodynamic data (Delta H-0, Delta S-0 and Delta G(0)) calculated from the temperature-dependent sorption isotherms suggested that the sorption of radionuclides on PAM/GO was a spontaneous and endothermic process. These results indicate that PAM/GO is a promising material for the control of radionuclide pollution.
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