Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 320, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.molliq.2020.114443
Keywords
Hyper-crosslinked porous resins; Amidoxime; Adsorbent; Uranium (VI)
Funding
- China Postdoctoral Science Foundation [2017M621231]
- Postdoctoral Science Foundation of Heilongjiang Province [LBH-Z16010]
- National Natural Science Foundation of China [21404027, NSFC 51872057]
- Fundamental Research Funds for the Central Universities [3072020CF1020]
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Traditional adsorption resin prepared by a low efficiency method has a low porosity and surface area, which limits the adsorption performance of the resin. Therefore, a novel porous resin was developed by structural design of the resins through post- modification with HPA and a post-crosslinked method. The novel porous post-modification resin was successfully prepared by the multistep method. Meanwhile, the high surface area and abundant micropores in HCR-AO can improve the adsorption rate by accelerating the diffusion of uranium in the external diffusion stage. The removal capacity of HCR-AO increased 366% for HCR and 120% for PSD-AO at the same initial concentration. HCR-AO takes less time to reach equilibrium than PSD-AO and HCR. Excitingly, the adsorption amount of the material dropped only slightly even after 8 cycles. The short equilibrium time and outstanding removal efficiency makes it a novel candidate for further extraction of U (VI) from seawater. (C) 2020 Elsevier B.V. All rights reserved.
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