首页|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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It is quite important to ensure the safety and sustainable development of nuclear energy for the treat-ment of radioactive wastewater.To treat radioactive wastewater efficiently and rapidly,two multi-amineβ-cyclodextrin polymers(diethylenetriamine β-cyclodextrin polymer(DETA-TFCDP)and triethylene-tetramine 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 equi-librium 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.

AdsorptionWaste waterPollutionUranium(Ⅵ)β-Cyclodextrin

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

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

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Jiangxi ProvinceNatural Science Foundation of Jiangxi ProvinceNatural Science Foundation of Jiangxi ProvinceCollege Student Innovation and Enterprise Programme of Jiangxi Province

216030645210221420202BABL20302620212BAB20300120202BABL214016S202310405010

2024

10.1016/j.cjche.2023.12.018

中国化学工程学报(英文版)
中国化工学会

中国化学工程学报(英文版)

CSTPCDEI
影响因子：0.818
ISSN：1004-9541
年,卷(期)：2024.68(4)
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