Research on the Uranium ion Removal Performance of Polyethyleneimine/Ramie Fiber Self-Supporting Membranes

ZHANG Shuang; TANG Yong; AN Zaixu; CHEN Xixi; NA Bing; LIU Hesheng; LIU Yuhui

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ZHANG Shuang, TANG Yong, AN Zaixu, et al. Research on the Uranium ion Removal Performance of Polyethyleneimine/Ramie Fiber Self-Supporting Membranes[J]. Acta Materiae Compositae Sinica.

Citation:

ZHANG Shuang, TANG Yong, AN Zaixu, et al. Research on the Uranium ion Removal Performance of Polyethyleneimine/Ramie Fiber Self-Supporting Membranes[J]. Acta Materiae Compositae Sinica.

ZHANG Shuang, TANG Yong, AN Zaixu, et al. Research on the Uranium ion Removal Performance of Polyethyleneimine/Ramie Fiber Self-Supporting Membranes[J]. Acta Materiae Compositae Sinica.

Citation:

ZHANG Shuang, TANG Yong, AN Zaixu, et al. Research on the Uranium ion Removal Performance of Polyethyleneimine/Ramie Fiber Self-Supporting Membranes[J]. Acta Materiae Compositae Sinica.

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Research on the Uranium ion Removal Performance of Polyethyleneimine/Ramie Fiber Self-Supporting Membranes

ZHANG Shuang¹,
TANG Yong²,
AN Zaixu²,
CHEN Xixi²,
NA Bing^{1, 2
,
,},
LIU Hesheng⁴,
LIU Yuhui^{3
,
,}

1.
State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, 330013
2.
School of Chemistry and Materials Science, East China University of Technology, Nanchang, 330013
3.
School of Nuclear Science and Engineering, East China University of Technology, Nanchang, 330013
4.
School of Mechanical and Vehicle Engineering, East China Jiaotong University, Nanchang, 330013

Funds: National Foundation Committee Youth Science Fund project (22006013) ; Regional science fund project of National Foundation Committee (22266003) ; Jiangxi Provincial Innovation and Entrepreneurship Training Program for College Students (20225BCJ23020) ; China Uranium Corporation Limited - East China University of Technology State Key Laboratory of Nuclear Resources and Environment Joint innovation fund project (2023NRE-LH-18)

Received Date: 2023-12-05
Accepted Date: 2024-01-20
Rev Recd Date: 2024-01-09

Available Online: 2024-03-01

Abstract

Abstract

In order to deal with the increasingly serious energy and environmental pollution problems, the treatment of uranium containing wastewater has become an urgent matter. In order to treat uranium containing wastewater efficiently and conveniently, polyethylenimide/ramie fiber self-sustaining membrane (PEI/RAM) was prepared by grafting polyethylimide (PEI) onto ramie fiber after treatment with low eutic solvent (DES, choline chloride-oxalic acid system), and was used to remove uranyl ion (UO₂²⁺) in aqueous solution. The effects of initial concentration of UO₂²⁺, pH value of solution, adsorption time and temperature on the properties of the adsorbent were studied. When the initial concentration of uranyl ion is 20 mg/L and the solution pH is 6, the adsorption equilibrium capacity of uranium reaches 302 mg·g⁻¹. The uranium adsorption process of PEI/RAM is closer to Langmuir model and quasi-second-order kinetic model. In the presence of interfering metal ions (Ca²⁺, K⁺, Mg²⁺, Na⁺), the polyethylenimide/Ramie fiber self-supported film (PEI/RAM) adsorbent showed good selectivity for uranyl ions, and its adsorption capacity for UO₂²⁺ (20 mg/L) was nearly 70 times that of other metal ions (20 mg/L).
- polyethylenimide(PEI),
- ramie fiber,
- adsorb,
- uranium,
- deep eutectic solvent(DES)
Long Abstrsct
Innovation Points