Efficient and rapid capture of uranium(VI) in wastewater via multi-amine modified β-cyclodextrin porous polymer

doi:10.1016/j.cjche.2023.12.018

中国化学工程学报 ›› 2024, Vol. 68 ›› Issue (4): 144-155.DOI: 10.1016/j.cjche.2023.12.018

Efficient and rapid capture of uranium(VI) in wastewater via multi-amine modified β-cyclodextrin porous polymer

Xing Zhong, Yubin Tan, Siyuan Wu, Caixia Hu, Kai Guo, Yongchuan Wu, Neng Yu, Mingyang Ma, Ying Dai

School of Chemistry and Materials Science, East China University of Technology, Nanchang 330013, China

收稿日期:2023-08-04 修回日期:2023-12-21 出版日期:2024-04-28 发布日期:2024-06-28
通讯作者: Caixia Hu,E-mail address:hucaixia@ecut.edu.cn;Ying Dai,E-mail address:daiying@ecut.edu.cn
基金资助:
National Natural Science Foundation of China (21603064, 52102214), Natural Science Foundation of Jiangxi Province (20202BABL203026, 20212BAB203001, 20202BABL214016) and College Student Innovation and Enterprise Programme of Jiangxi Province (S202310405010) provided funding for this study.

Efficient and rapid capture of uranium(VI) in wastewater via multi-amine modified β-cyclodextrin porous polymer

Xing Zhong, Yubin Tan, Siyuan Wu, Caixia Hu, Kai Guo, Yongchuan Wu, Neng Yu, Mingyang Ma, Ying Dai

School of Chemistry and Materials Science, East China University of Technology, Nanchang 330013, China

Received:2023-08-04 Revised:2023-12-21 Online:2024-04-28 Published:2024-06-28
Contact: Caixia Hu,E-mail address:hucaixia@ecut.edu.cn;Ying Dai,E-mail address:daiying@ecut.edu.cn
Supported by:
National Natural Science Foundation of China (21603064, 52102214), Natural Science Foundation of Jiangxi Province (20202BABL203026, 20212BAB203001, 20202BABL214016) and College Student Innovation and Enterprise Programme of Jiangxi Province (S202310405010) provided funding for this study.

摘要/Abstract

摘要： It is quite important to ensure the safety and sustainable development of nuclear energy for the treatment of radioactive wastewater. To treat radioactive wastewater efficiently and rapidly, two multi-amine β-cyclodextrin polymers (diethylenetriamine β-cyclodextrin polymer (DETA-TFCDP) and triethylenetetramine β-cyclodextrin polymer (TETA-TFCDP)) were prepared and applied to capture uranium. Results exhibited that DETA-TFCDP and TETA-TFCDP displayed the advantages of high adsorption amounts (612.2 and 628.2 mg·g^-1, respectively) and rapid adsorption rates, which can reach (88 ±1)% of their equilibrium adsorption amounts in 10 min. Moreover, the adsorbent processes of DETA-TFCDP and TETA-TFCDP on uranium(VI) followed the Langmuir model and pseudo-second-order model, stating they were mainly chemisorption and self-endothermic. Besides, TETA-TFCDP also showed excellent selectivity in the presence of seven competing cations and could be effectively reused five times via Na₂CO₃ as the desorption reagent. Meanwhile, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy illustrated that the enriched multi-amine groups and oxygen-containing functional groups on the surface of TETA-TFCDP were the main active sites for capturing uranium(VI). Hence, multi-amine β-cyclodextrin polymers are a highly efficient, rapid, and promising adsorbent for capturing uranium(VI) from radioactive wastewater.

关键词: Adsorption, Waste water, Pollution, Uranium(VI), β-Cyclodextrin

Abstract: It is quite important to ensure the safety and sustainable development of nuclear energy for the treatment of radioactive wastewater. To treat radioactive wastewater efficiently and rapidly, two multi-amine β-cyclodextrin polymers (diethylenetriamine β-cyclodextrin polymer (DETA-TFCDP) and triethylenetetramine β-cyclodextrin polymer (TETA-TFCDP)) were prepared and applied to capture uranium. Results exhibited that DETA-TFCDP and TETA-TFCDP displayed the advantages of high adsorption amounts (612.2 and 628.2 mg·g^-1, respectively) and rapid adsorption rates, which can reach (88 ±1)% of their equilibrium adsorption amounts in 10 min. Moreover, the adsorbent processes of DETA-TFCDP and TETA-TFCDP on uranium(VI) followed the Langmuir model and pseudo-second-order model, stating they were mainly chemisorption and self-endothermic. Besides, TETA-TFCDP also showed excellent selectivity in the presence of seven competing cations and could be effectively reused five times via Na₂CO₃ as the desorption reagent. Meanwhile, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy illustrated that the enriched multi-amine groups and oxygen-containing functional groups on the surface of TETA-TFCDP were the main active sites for capturing uranium(VI). Hence, multi-amine β-cyclodextrin polymers are a highly efficient, rapid, and promising adsorbent for capturing uranium(VI) from radioactive wastewater.

Key words: Adsorption, Waste water, Pollution, Uranium(VI), β-Cyclodextrin

Xing Zhong, Yubin Tan, Siyuan Wu, Caixia Hu, Kai Guo, Yongchuan Wu, Neng Yu, Mingyang Ma, Ying Dai. Efficient and rapid capture of uranium(VI) in wastewater via multi-amine modified β-cyclodextrin porous polymer[J]. 中国化学工程学报, 2024, 68(4): 144-155.

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Efficient and rapid capture of uranium(VI) in wastewater via multi-amine modified β-cyclodextrin porous polymer

Efficient and rapid capture of uranium(VI) in wastewater via multi-amine modified β-cyclodextrin porous polymer

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