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Hu Z, Zhou Z, Guo J, Liu Y, Yang S, Guo Y, Wang L, Sun Z, Yang Z. Surface Engineering Design of Nano FeS@ Stenotrophomonas sp. by Ultrasonic Chemical Method for Efficient U(VI) and Th(IV) Extraction. TOXICS 2023; 11:297. [PMID: 37112524 PMCID: PMC10144925 DOI: 10.3390/toxics11040297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/14/2023] [Accepted: 03/21/2023] [Indexed: 06/19/2023]
Abstract
Nano-FeS has great potential for use in the management of radioactive contaminants. In this paper, we prepared a FeS@Stenotrophomonas sp. composite material by ultrasonic chemistry, and it showed excellent removal of uranium and thorium from the solution. Through optimization of the experimental conditions, it was found that the maximum adsorption capacities for uranium and thorium reached 481.9 and 407.5 mg/g for a composite made with a synthetic ratio of 1:1, pH 5 and 3.5, respectively, for U and Th, and sonication for 20 min. Compared with those of FeS or Stenotrophomonas alone, the removal capacity was greatly improved. The results of a mechanistic study indicated that efficient removal of the uranium and thorium was due to ion exchange, reduction, and microbial surface adsorption. FeS@Stenotrophomonas sp. could be applied to U(VI) and Th(IV) extraction for radioactive water.
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Affiliation(s)
- Zhongqiang Hu
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
- School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013, China
| | - Zhongkui Zhou
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
- School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013, China
| | - Jianping Guo
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
- School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013, China
| | - Yong Liu
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
- School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013, China
| | - Shunjing Yang
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
- School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013, China
| | - Yadan Guo
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
- School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013, China
| | - Liping Wang
- School of Environmental and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China
| | - Zhanxue Sun
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
- School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013, China
| | - Zhihui Yang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
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Ouyang Y, Xu Y, Zhao L, Deng M, Yang P, Peng G, Ke G. Preparation of ZnNiAl-LDHs microspheres and their adsorption behavior and mechanism on U(VI). Sci Rep 2021; 11:21625. [PMID: 34732804 PMCID: PMC8566569 DOI: 10.1038/s41598-021-01133-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 10/22/2021] [Indexed: 11/09/2022] Open
Abstract
Ternary zinc-nickel-aluminum hydrotalcites (ZnNiAl-LDHs) were prepared by hydrothermal synthesis. The structure and morphology of the materials were characterized using X-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), nitrogen adsorption-desorption (BET) and other test techniques. ZnNiAl-LDHs was applied in the treatment of uranium-containing wastewater, the effects of initial pH of the solution, adsorption temperature and contact time on its adsorption performance were systematically investigated, and the adsorption performance of ZnNiAl-LDHs and ZnAl-LDHs on uranyl ions were compared. The result showed that ZnNiAl-LDHs were 3D microspheres self-assembled from flakes, with a specific surface area of 102.02 m2/g, which was much larger than that of flake ZnAl-LDHs (18.49 m2/g), and the saturation adsorption capacity of ZnNiAl-LDHs for uranyl ions (278.26 mg/g) was much higher than that of ZnAl-LDHs for uranyl ions (189.16 mg/g), so the ternary ZnNiAl-LDHs had a more excellent adsorption capacity. In addition, kinetic and thermodynamic studies showed that the adsorption process of ZnNiAl-LDHs on uranyl ions conformed to the pseudo-second-order kinetic model and Langmuir isotherm model. The positive value of ΔH and the negative value of ΔG indicated that the adsorption process was endothermic and spontaneous. The adsorption mechanism was analyzed by X-ray energy spectroscopy (EDS), fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS). The results showed that the adsorption of uranyl ions by ZnNiAl-LDHs mainly consisted of complexation and ion substitution. The research results prove that ZnNiAl-LDHs is an adsorbent with low cost and excellent performance, and it has a good application prospect in the field of uranium-containing wastewater treatment.
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Affiliation(s)
- Yanquan Ouyang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, China.,Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang, 421001, China
| | - Yuanxin Xu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, China.,Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang, 421001, China
| | - Limei Zhao
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, China.,Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang, 421001, China
| | - Mingzhan Deng
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, China.,Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang, 421001, China
| | - Pengfei Yang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, China. .,Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang, 421001, China. .,China Nuclear Construction Key Laboratory of High Performance Concrete, University of South China, Hengyang, 421001, China.
| | - Guowen Peng
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, China.,Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang, 421001, China
| | - Guojun Ke
- China Nuclear Construction Key Laboratory of High Performance Concrete, University of South China, Hengyang, 421001, China.,Hunan Provincial Key Laboratory of High Performance Special Concrete, University of South China, Hengyang, 421001, China
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Iron Based Chitin Composite Films for Efficient Solar Seawater Desalination. Processes (Basel) 2021. [DOI: 10.3390/pr9071126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Seawater desalination provides a convenient method for the sustainable production of fresh water. However, the preparation of low-cost, high-efficiency solar absorbers remains a huge challenge. To this end, our research group designed and produced a cheap absorber—a membrane made of natural polymer chitin with black FeS and Fe3O4, respectively. Due to the hierarchical pore structure, excellent photothermal performance and good hydrophilicity of the film, their water evaporation rates reached 1.47 kg/m2/h and 1.55 kg/m2/h under one sunlight, respectively. Under about 10 suns, the highest desalination efficiency of FeS/chitin and Fe3O4/chitin are 90% and 74%, respectively, and their salinities are also in line with the World Health Organization drinking water standards. These results indicate the potential of chitin-based nanomaterials as high-efficiency solar absorbers to produce fresh water.
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Dai L, Nie C, Sun W, Xiao Y, Mao Y, Wu Z, Liao L, Xiao X. Complexation and enantioselectivity of sulfur/selenium-substituted uranyl-salophens with R/S-chiral lactone for RRS/SSR-3, 5-Dimethyl-2-(3-fluorophenyl)-2-morpholinols. J Radioanal Nucl Chem 2020. [DOI: 10.1007/s10967-020-07137-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Synthesis of X-Zeolite from Waste Basalt Powder and its Influencing Factors and Synthesis Mechanism. MATERIALS 2019; 12:ma12233895. [PMID: 31779067 PMCID: PMC6926885 DOI: 10.3390/ma12233895] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 11/12/2019] [Accepted: 11/21/2019] [Indexed: 11/23/2022]
Abstract
Traditional hydrothermal method (TH) and alkali fusion-assisted hydrothermal method (AFH) were evaluated for the preparation of zeolites from waste basalt powder by using NaOH as the activation reagent in this study. The synthesized products were characterized by BET, XRD, FTIR and SEM. The effects of acid treatment, alkali/basalt ratio, calcination temperature and crystallization temperature on the synthesis process were studied. The results showed that AFH successfully synthesized zeolite X with higher crystallinity and no zeolite was formed by TH. The specific surface area of synthetic zeolite X was 486.46 m2·g−1, which was much larger than that of original basalt powder (12.12 m2·g−1). Acid treatment and calcination temperature had no effect on zeolite types, but acid treatment improved the yield and quality of zeolite. Alkali/basalt ratio and crystallization temperature not only affected the crystallinity of synthesized zeolites but also affected its type. The optimum synthesis condition of zeolite X are as follows: acid treatment of 5 wt% HCl solution, NaOH/basalt ratio of 1:1, a calcination temperature of 650 °C and crystallization temperature of 120 °C. The work shows that basalt can be used as a raw material to prepare zeolite.
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