Removal of uranium (VI) from aqueous solution by amidoxime functionalized superparamagnetic polymer microspheres prepared by a controlled radical polymerization in the presence of DPE

Yuan, Dingzhong; Chen, Long; Xiong, Xin; Yuan, Ligang; Liao, Shijun; Wang, Yun

doi:10.1016/j.cej.2015.10.014

Cited by 175 publications

(74 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Adsorption kinetics is an important method to effectively reflect the adsorption mechanism of adsorbates on materials [2, 72–74]. Results of adsorption kinetic experiments of U(VI) were shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Uranium, as one of the vital radionuclides and a key fuel for nuclear reactors, has been widely used in many fields, such as nuclear power plant, medical research, the war industry, and so on [1, 2]. Uranium is a long-lived and high perniciousness radionuclide with a number of radioactive daughter products that inevitably has a harmful effect on human health and ecological in the process of exploitation and application [1–5].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ultra-thin iron phosphate nanosheets for high efficient U(VI) adsorption

Xiao

et al. 2019

Journal of Hazardous Materials

104

View full text Add to dashboard Cite

In this study, the ultra-thin iron phosphate Fe7(PO4)6 nanosheets (FP1) with fine-controlled morphology, has been designed as a new two-dimensional (2D) material for uranium adsorption. Due to its unique high accessible 2D structure, atom-dispersed phosphate/iron anchor groups and high specific surface area (27.77 m2·g−1), FP1 shows an extreme-high U(VI) adsorption capacity (704.23 mg·g−1 at 298 K, pH = 5.0 ± 0.1), which is about 27 times of conventional 3D Fe7(PO4)6 (24.51 mg·g−1-sample FP2) and higher than most 2D absorbent materials, showing a great value in the treatment of radioactive wastewater. According to the adsorption results, the sorption between U(VI) and FP1 is spontaneous and endothermic, and can be conformed to single molecular layer adsorption. Based on the analyses of FESEM, EDS, Mapping, FT-IR and XRD after adsorption, the possibile adsorption mechanism can be described as a Monolayer Surface Complexation and Stacking mode (MSCS-Mode). Additionally, the research not only provide a novel preparing method for 2D phosphate materials but also pave a new pathway to study other two-dimensional adsorption materials.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ultra-thin iron phosphate nanosheets for high efficient U(VI) adsorption

Xiao

et al. 2019

Journal of Hazardous Materials

104

View full text Add to dashboard Cite

show abstract

“…It was speculated that the highly selective adsorption resulted from the plentiful amino groups of collagen fibers in HSLW. The bond distance UN was significantly shorter than that of other metal‐N including Ni 2+ , Co 2+ and Cd 2+ , leading to a strong tendency for nitrogen functional groups to interact with uranium . In addition, the phenolic hydroxyl groups of tannin on HSLW exhibited superior adsorption performance for uranium due to the favorable coordination of oxygen‐containing functional groups towards metal cations with large radius .…”

Section: Resultsmentioning

confidence: 99%

“…The bond distance U-N was significantly shorter than that of other metal-N including Ni 2+ , Co 2+ and Cd 2+ , leading to a strong tendency for nitrogen functional groups to interact with uranium. 50 In addition, the phenolic hydroxyl groups of tannin on HSLW exhibited superior adsorption performance for uranium due to the favorable coordination of oxygen-containing functional groups towards metal cations with large radius. 51 Furthermore, the distribution coefficient K d was close to 5000 mL g −1 , revealing excellent affinity of HSLW towards uranium.…”

Section: Effect Of Competitive Ionsmentioning

confidence: 99%

Selective adsorption of uranium from salt lake‐simulated solution by phenolic‐functionalized hollow sponge‐like adsorbent

Lin

Yan

et al. 2018

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND Hydrothermal carbonization has become a proficient technique to synthesize carbon materials from biomass owing to its availability and environmental friendliness. Chrome‐tanned leather, a biomass waste that contains numerous functional groups, is a potential adsorbent for separation of heavy metal ions. In the present work, a phenolic‐functionalized hollow sponge‐like adsorbent (HSLW) was synthesized from leather waste via hydrothermal carbonization in the presence of tannin. This study aims to develop a novel adsorbent for uranium separation from salt lake. RESULTS The adsorbent was characterized by several techniques and the adsorption behavior of the adsorbent towards uranium was investigated. The maximum adsorption capacity of the absorbent reached 200.10 mg g−1 at 328.15 K. The adsorption process fitted well with the linear Freundlich isotherm model and pseudo‐second‐order model. The thermodynamic parameters indicated that the adsorption process was spontaneous, feasible and endothermic in nature. Selective adsorption in competitive multi‐ion solution and simulated high‐salinity system showed that the adsorbent had not only strong affinity but also high selectivity towards uranium. CONCLUSION HSLW could become a promising adsorbent for practical and efficient selective separation and recovery of uranium from salt lakes. © 2018 Society of Chemical Industry

show abstract

“…Among these adsorbents, crosslinked poly(acrylamidoximes) was highly appreciated owing to its stability in seawater and high adsorption selectivity and capacity of U(VI). This work is followed by substantial research focusing on amidoxime-based adsorbents (Zhuang et al 2018;Wu et al 2018;Zhao et al 2014b;Yuan et al 2016;Wang et al 2018b;Cheng et al 2019), and numerous reviews on amidoxime-based adsorbents for uranium harvest (Abney et al 2017). So far, the countable marine experiments have all involved amidoxime-based polymer adsorbents (Gill et al 2016;Ladshaw et al 2017).…”

Section: Adsorbents Bearing Amidoxime Ligandsmentioning

confidence: 99%

Extraction and adsorption of U(VI) from aqueous solution using affinity ligand-based technologies: an overview

Wang

Zhuang

2019

Rev Environ Sci Biotechnol

104

View full text Add to dashboard Cite

In terms of energy resource recovery and environmental protection, the separation of U(VI) from aqueous solutions is vital. Adsorption and solvent extraction are the most common separation technologies, which are also widely used for uranium recovery or removal from aqueous solution. The linear structure of uranyl ion and its multiple coordination feasibilities offer great opportunities for its extractive and adsorptive separation. This review briefly summarized and analyzed the recent advances in the separation of uranyl ions from aqueous solutions, mainly focusing on the selective extraction and adsorption using affinity ligands-based technology, which is promising method due to the high selectivity, capable of recovering uranium at low concentration and complicate aqueous environment. The affinity ligands for uranyl ions, including organophosphorus, calixarenes, amidoxime, imidazole and other derivatives were introduced. These donor ligands for design of extraction solvents or adsorbents for the separation of uranyl ions were summarized. The further research on the coordination chemistry towards uranyl ions and removal mechanisms would provide vital information for the development of more effective ligands with higher affinity, stability and compatibility in various systems, which is still challenging.

show abstract

Removal of uranium (VI) from aqueous solution by amidoxime functionalized superparamagnetic polymer microspheres prepared by a controlled radical polymerization in the presence of DPE

Cited by 175 publications

References 41 publications

Ultra-thin iron phosphate nanosheets for high efficient U(VI) adsorption

Ultra-thin iron phosphate nanosheets for high efficient U(VI) adsorption

Selective adsorption of uranium from salt lake‐simulated solution by phenolic‐functionalized hollow sponge‐like adsorbent

Extraction and adsorption of U(VI) from aqueous solution using affinity ligand-based technologies: an overview

Contact Info

Product

Resources

About