1
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Sun D, Lv C, Hua Y, Li M, Zhang X, Fang Q, Cai T, Wu X. High efficiency electrochemical separation of uranium(VI) from uranium-containing wastewater by microbial fuel cells with different cathodes. Bioelectrochemistry 2023; 151:108393. [PMID: 36739701 DOI: 10.1016/j.bioelechem.2023.108393] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 01/25/2023] [Accepted: 01/27/2023] [Indexed: 02/04/2023]
Abstract
As an emerging versatile technology for separating uranium from uranium-containing wastewater (UCW), microbial fuel cell (MFC) offers a novel approach to UCW treatment. Its cathode is essential for the treatment of UCW. To thoroughly investigate the efficacy of MFC in treating UCW, investigations were conducted using MFCs with five materials (containing iron sheet (IP), stainless steel mesh (SSM), carbon cloth (CC), carbon brush (CB), and nickel foam (NF)) as cathodes. The results revealed that each MFC system performed differently in terms of carbon source degradation, uranium removal, and electricity production. In terms of carbon source degradation, CB-MFC showed the best performance. The best uranium removal method was NF-MFC, and the best electricity production method was carbon-based cathode MFC. Five MFC systems demonstrated stable performance and consistent difference over five cycles, with CC-MFC outperforming the others. Furthermore, SEM and XPS characterization of the cathode materials before and after the experiment revealed that a significant amount of U(IV) was generated during the uranium removal process, indicating that uranium ions were primarily removed by electrochemical reduction precipitation. This study confirmed that abiotic cathode MFC had a high UCW removal potential and served as a good guideline for obtaining the best cathode for MFC.
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Affiliation(s)
- Du Sun
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, PR China
| | - Chunxue Lv
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, PR China
| | - Yilong Hua
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, PR China; Hengyang Key Laboratory of Soil Pollution Control and Remediation, University of South China, Hengyang 421001, PR China
| | - Mi Li
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, PR China; Hengyang Key Laboratory of Soil Pollution Control and Remediation, University of South China, Hengyang 421001, PR China
| | - Xiaowen Zhang
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, PR China; Hengyang Key Laboratory of Soil Pollution Control and Remediation, University of South China, Hengyang 421001, PR China
| | - Qi Fang
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, PR China; Hengyang Key Laboratory of Soil Pollution Control and Remediation, University of South China, Hengyang 421001, PR China
| | - Tao Cai
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, PR China; Hengyang Key Laboratory of Soil Pollution Control and Remediation, University of South China, Hengyang 421001, PR China
| | - Xiaoyan Wu
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, PR China; Hengyang Key Laboratory of Soil Pollution Control and Remediation, University of South China, Hengyang 421001, PR China.
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2
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Li M, Xu W, Wu X, Zhang X, Fang Q, Cai T, Yang J, Hua Y. Enhanced mechanism of calcium towards uranium incorporation and stability in magnetite during electromineralization. JOURNAL OF HAZARDOUS MATERIALS 2023; 457:131641. [PMID: 37329595 DOI: 10.1016/j.jhazmat.2023.131641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 05/05/2023] [Accepted: 05/13/2023] [Indexed: 06/19/2023]
Abstract
Doping uranium into a room-temperature stable Fe3O4 lattice structure effectively reduces its migration. However, the synergistic or competitive effects of coexisting ions in an aqueous solution directly affect the uranium mineralization efficiency and the structural stability of uranium-bearing Fe3O4. The effects of calcium, carbonate, and phosphate on uranium electromineralization were investigated via batch experiments and theoretical calculations. Calcium incorporated into the Fe3O4 lattice increased the level and stability of doped uranium in Fe3O4. Uranium and calcium occupied the octahedral and tetrahedral sites of Fe3O4, respectively; the formation energy was only -10.23 eV due to strong hybridization effects between Fe1s, U4f, O2p, and Ca3d orbitals. Compared to the uranium-doped Fe3O4, uranium leaching ratios decreased by 19.2 % and 48.9 % under strongly acidic and alkaline conditions after 120 days. However, high concentrations of phosphate inhibited Fe3O4 crystallization. These results should provide new avenues for the development of multi-metal co-doping technologies and mineralization optimization to treat uranium-containing complex wastewater.
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Affiliation(s)
- Mi Li
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China
| | - Wanqin Xu
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China
| | - Xiaoyan Wu
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China
| | - Xiaowen Zhang
- Hengyang Key Laboratory of Soil Pollution Control and Remediation, University of South China, Hengyang 421001, China
| | - Qi Fang
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China
| | - Tao Cai
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China
| | - Jianping Yang
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Yilong Hua
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
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3
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Xiong L, Wang Y, Cui W, Chen L, Luo Q, Cao X, Liu Y. Preparation of ion-doped amorphous titanium phosphates and their adsorption properties for U(VI). J Radioanal Nucl Chem 2023. [DOI: 10.1007/s10967-023-08778-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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4
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Liao Y, Lei R, Weng X, Yan C, Fu J, Wei G, Zhang C, Wang M, Wang H. Uranium capture by a layered 2D/2D niobium phosphate/holey graphene architecture via an electro-adsorption and electrocatalytic reduction coupling process. JOURNAL OF HAZARDOUS MATERIALS 2023; 442:130054. [PMID: 36182892 DOI: 10.1016/j.jhazmat.2022.130054] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/12/2022] [Accepted: 09/22/2022] [Indexed: 06/16/2023]
Abstract
As an energy-efficient and eco-friendly technique, capacitive deionization (CDI) has shown great potential for uranium (U(VI)) capture recently. However, extracting U(VI) with high kinetics, capacity and selectivity remains a major challenge due to the current surface active sites-based material and co-existing ions in aqueous solution. Here we rationally designed a layered 2D/2D niobium phosphate/holey graphene (HGNbP) electrode material, and originally demonstrated its efficient U(VI) capture ability via an electro-adsorption and electrocatalytic reduction coupling process. The less-accumulative loose layered architecture, open polycrystalline construction of niobium phosphate with active phosphate sites, and rich in-plane nano-pores on conductive graphene nanosheets endowed HGNbP with fast charge/ion transport, high electroconductivity and superior pseudocapacitance, which enabled U(VI) ions first to be electro-adsorbed, then physico-chemical adsorbed, and finally electrocatalysis reduced/deposited onto electrode surface without the limitation of active sites under a low potential of 1.2 V. Based on these virtues, the HGNbP exhibited a fast adsorption kinetics, with a high removal rate of 99.9% within 30 min in 50 mg L-1 U(VI) solution, and a high adsorption capacity up to 1340 mg g-1 in 1000 mg L-1 U(VI) solution. Furthermore, the good recyclability and selectivity towards U(VI) were also realized.
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Affiliation(s)
- Yun Liao
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China; Hunan key laboratory for the design and application of actinide complexes, University of South China, Hengyang, Hunan 421001, PR China.
| | - Ruilin Lei
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Xiaofang Weng
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Chuan Yan
- School of Nuclear Science and Technology, University of South China, Hengyang, Hunan 421001, China
| | - Jiaxi Fu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Guoxing Wei
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Chen Zhang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Meng Wang
- School of Nuclear Science and Technology, University of South China, Hengyang, Hunan 421001, China.
| | - Hongqing Wang
- Hunan key laboratory for the design and application of actinide complexes, University of South China, Hengyang, Hunan 421001, PR China.
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5
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Tang J, Lei Y, Nie X, Gao Z, Pan N, Li X, Zou H, Li L. Rapid and highly selective capture of U(VI) from water by copper phosphate. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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6
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Jin X, Liu G, Bao C, Chen D, Du X, Chen K, Rao L, Huang Z, Huang Q. Selectively sequestrating aqueous Bi(III) with titanium pyrophosphate polyhedral submicro-particles. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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7
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Lv SY, Li M, Wu XY, Zhang XW, Hua YL, Bi L, Fang Q, Cai T. A non-polluting method for rapidly purifying uranium-containing wastewater and efficiently recovering uranium through electrochemical mineralization and oxidative roasting. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125885. [PMID: 34492823 DOI: 10.1016/j.jhazmat.2021.125885] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 03/26/2021] [Accepted: 04/09/2021] [Indexed: 06/13/2023]
Abstract
Iron-based materials have been widely used for treating uranium-containing wastewater. However, the iron-uranium solids originating by treating radioactive water through pollutant transfer methods has become a new uncontrolled source of persistent radioactive pollution. The safe disposal of such hazardous waste is not yet well-resolved. The electrochemical mineralization method was developed to rapidly purify uranium-containing wastewater through lattice doping in magnetite and recover uranium without generating any pollutants. An unexpected isolation of U3O8 from uranium-doped magnetite was discovered through in-situ XRD with a temperature variation from 300 °C to 700 °C. Through HRTEM and DFT calculation, it was confirmed that the destruction of the inverse spinel crystal structure during the gradual transformation of magnetite into γ-Fe2O3 and α-Fe2O3 promoted the migration, aggregation, and isolation of uranium atoms. Uniquely generated U3O8 and Fe2O3 were easily separated and over 80% uranium and 99.5% iron could be recovered. These results demonstrate a new strategy for uranium utilization and the environmentally friendly treatment of uranium-containing wastewater.
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Affiliation(s)
- Shao-Yan Lv
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China
| | - Mi Li
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China; Hengyang Key Laboratory of Soil Pollution Control and Remediation, University of South China, Hengyang 421001, China.
| | - Xiao-Yan Wu
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China
| | - Xiao-Wen Zhang
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China
| | - Yi-Long Hua
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China
| | - Lei Bi
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China
| | - Qi Fang
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China
| | - Tao Cai
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China
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8
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Tissot C, Pooley GM, Hadadi MA, Barkatt A. A highly regenerable phosphate-based adsorbent for Uranium in seawater: Characterization and performance assessment using 233U tracer. SEP SCI TECHNOL 2021. [DOI: 10.1080/01496395.2021.1917612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Chanel Tissot
- Department of Materials Science and Engineering, University of Maryland, MD, USA
| | - Grace M. Pooley
- Department of Chemistry, The Catholic University of America, Washington, DC, USA
| | - Mohammad Adel Hadadi
- Department of Chemistry, The Catholic University of America, Washington, DC, USA
| | - Aaron Barkatt
- Department of Chemistry, The Catholic University of America, Washington, DC, USA
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9
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Xue C, Mao Y, Wang W, Song Z, Zhao X, Sun J, Wang Y. Current status of applying microwave-associated catalysis for the degradation of organics in aqueous phase - A review. J Environ Sci (China) 2019; 81:119-135. [PMID: 30975315 DOI: 10.1016/j.jes.2019.01.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Revised: 01/14/2019] [Accepted: 01/15/2019] [Indexed: 06/09/2023]
Abstract
Interactions between microwaves and certain catalysts can lead to efficient, energy-directed convergence of a relatively dispersed microwave field onto the reactive sites of the catalyst, which produces thermal or discharge effects around the catalyst. These interactions form "high-energy sites" (HeS) that promote energy efficient utilization and enhanced in situ degradation of organic pollutants. This article focuses on the processes occurring between microwaves and absorbing catalysts, and presents a critical review of microwave-absorbing mechanisms. This article also discusses aqueous phase applications of relevant catalysts (iron-based, carbon-based, soft magnetic, rare earth, and other types) and microwaves, special effects caused by the dimensions and structures of catalytic materials, and the optimization and design of relevant reactors for microwave-assisted catalysis of wastewater. The results of this study demonstrate that microwave-assisted catalysis can effectively enhance the degradation rate of organic compounds in an aqueous phase and has potential applications to a variety of engineering fields such as microwave-assisted pyrolysis, pollutant removal, material synthesis, and water treatment.
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Affiliation(s)
- Chao Xue
- School of Energy and Power Engineering, Shandong University, Jinan 250100, China
| | - Yanpeng Mao
- School of Energy and Power Engineering, Shandong University, Jinan 250100, China.
| | - Wenlong Wang
- School of Energy and Power Engineering, Shandong University, Jinan 250100, China
| | - Zhanlong Song
- School of Energy and Power Engineering, Shandong University, Jinan 250100, China
| | - Xiqiang Zhao
- School of Energy and Power Engineering, Shandong University, Jinan 250100, China
| | - Jing Sun
- School of Energy and Power Engineering, Shandong University, Jinan 250100, China
| | - Yanxiang Wang
- School of Material Science & Engineering, Shandong University, Jinan 250100, China
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10
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Yang P, Liu Q, Liu J, Chen R, Li R, Bai X, Wang J. Highly efficient immobilization of uranium(VI) from aqueous solution by phosphonate-functionalized dendritic fibrous nanosilica (DFNS). JOURNAL OF HAZARDOUS MATERIALS 2019; 363:248-257. [PMID: 30308364 DOI: 10.1016/j.jhazmat.2018.09.062] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 09/08/2018] [Accepted: 09/24/2018] [Indexed: 05/20/2023]
Abstract
A novel phosphonate assisted fabrication dendritic fibrous nanosilica (DFNS)-based adsorbing material was successfully synthesis via organic modification with 3-aminopropyltriethoxysilane (KH550), epichlorohydrin (ECH) and phytic acid (PA) on the grounds of hard-soft-acid-base theory, in which organic phosphorous can be applied for efficient chelating uranium(VI) (U(VI)). The adsorption properties can be evaluated by setting a series parameters (pH, adsorbent dose, contact time, initial U(VI) concentration). It is clear that uranium as a "hard" lewis acid can easily form chelating bond with "hard" donor-ligands so that as-papered PA-DFNS has an excellent adsorption capacity (qm = 1106 mg g-1, 298.15 K), which exhibits a 163% increment compared with that of original DNFS under the same condition. In the meantime, the adsorption equilibrium time of PA-DNFS (t = 60 min) was shortened by 33% compared with that of pristine DNFS. Besides, the PA-DFNS exhibited good removal efficiency and stability under the 0.1 M HNO3 after 6 cycles, extending the application of PA-DFNS in the field of adsorption.
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Affiliation(s)
- Peipei Yang
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China
| | - Qi Liu
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China.
| | - Jingyuan Liu
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China
| | - Rongrong Chen
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China
| | - Rumin Li
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China
| | - Xuefeng Bai
- College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China
| | - Jun Wang
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; Harbin Engineering University Capital Management Co. Ltd., PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China; Institute of Advanced Marine Materials, Harbin Engineering University, 150001, PR China.
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11
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Adsorption of uranium(VI) on mesoporous silica microspheres supported titanium hydroxide hybrid material. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-6288-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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12
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Lu BQ, Li M, Zhang XW, Huang CM, Wu XY, Fang Q. Immobilization of uranium into magnetite from aqueous solution by electrodepositing approach. JOURNAL OF HAZARDOUS MATERIALS 2018; 343:255-265. [PMID: 28965015 DOI: 10.1016/j.jhazmat.2017.09.037] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 08/12/2017] [Accepted: 09/21/2017] [Indexed: 06/07/2023]
Abstract
Immobilization of uranium into magnetite (Fe3O4), which was generated from metallic iron by electrochemical method, was proposed to rapidly remove uranium from aqueous solution. The effects of electrochemical parameters such as electrode materials, voltage, electrode gap, reaction time and pH value on the crystallization of Fe3O4 and uranium removal efficiencies were investigated. More than 90% uranium in the solution was precipitated with Fe3O4 under laboratory conditions when uranium concentration range from 0.5mg/L to 10mg/L. The Fe3O4 crystallization mechanism and immobilization of uranium was proved by XPS, XRD, TEM, FTIR and VSM methods. The results indicated that the cationic (including Fe2+, Fe3+ and U(VI)) migrate to cathode side under the electric field and the uranium was incorporated or adsorbed by Fe3O4 which was generated at cathode while the pH ranges between 2-7. The uranium-containing precipitate of Fe3O4 can exist stably at the acid concentration below 60g/L. Furthermore, the precipitate may be used as valuable resources for uranium or iron recycling, which resulted in no secondary pollution in the removal of uranium from aqueous solution.
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Affiliation(s)
- Bing-Qing Lu
- School of Environmental Protection and Safety Engineering, University of South China, Hengyang 421001, China
| | - Mi Li
- School of Environmental Protection and Safety Engineering, University of South China, Hengyang 421001, China; Key Laboratory of Radioactive Waste Treatment and Disposal, University of South China, Hengyang 421001, China.
| | - Xiao-Wen Zhang
- School of Environmental Protection and Safety Engineering, University of South China, Hengyang 421001, China; Key Laboratory of Radioactive Waste Treatment and Disposal, University of South China, Hengyang 421001, China
| | - Chun-Mei Huang
- School of Environmental Protection and Safety Engineering, University of South China, Hengyang 421001, China
| | - Xiao-Yan Wu
- School of Environmental Protection and Safety Engineering, University of South China, Hengyang 421001, China; Key Laboratory of Radioactive Waste Treatment and Disposal, University of South China, Hengyang 421001, China
| | - Qi Fang
- School of Environmental Protection and Safety Engineering, University of South China, Hengyang 421001, China; Key Laboratory of Radioactive Waste Treatment and Disposal, University of South China, Hengyang 421001, China
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13
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Titanium Pyrophosphate for Removal of Trivalent Heavy Metals and Actinides Simulated by Retention of Europium. ScientificWorldJournal 2017; 2017:2675897. [PMID: 28785720 PMCID: PMC5529645 DOI: 10.1155/2017/2675897] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 04/24/2017] [Accepted: 05/09/2017] [Indexed: 11/18/2022] Open
Abstract
This work addresses the synthesis of titanium pyrophosphate, as well as the characterization and evaluation of the sorption process of europium, for removal of trivalent heavy metals and actinides simulate. The evaluation of the surface properties of titanium pyrophosphate was carried out determining the surface roughness and surface acidity constants. The values obtained from the determination of the surface roughness of the synthesized solid indicate that the surface of the material presents itself as slightly smooth. The FITEQL program was used to fit the experimental titration curves to obtain the surface acidity constants: logK+ = 3.59 ± 0.06 and logK- = -3.90 ± 0.05. The results of sorption kinetics evidenced that the pseudo-order model explains the retention process of europium, in which the initial sorption velocity was 8.3 × 10-4 mg g-1 min-1 and kinetic constant was 1.8 × 10-3 g mg min-1. The maximum sorption capacity was 0.6 mg g-1. The results obtained from sorption edge showed the existence of two bidentate complexes on the surface.
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14
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Shao D, Li Y, Wang X, Hu S, Wen J, Xiong J, Asiri AM, Marwani HM. Phosphate-Functionalized Polyethylene with High Adsorption of Uranium(VI). ACS OMEGA 2017; 2:3267-3275. [PMID: 31457652 PMCID: PMC6641584 DOI: 10.1021/acsomega.7b00375] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Accepted: 05/15/2017] [Indexed: 05/12/2023]
Abstract
For uranium extraction from seawater, development of new stable and reusable sorbents with high affinity and good selectivity for U(VI) is required. Herein, a new phosphate-functionalized polyethylene (denoted PO4/PE) was synthesized via a simple Ar-jet plasma treatment of PE in concentrated H3PO4 and was employed in U(VI) extraction from seawater. The prepared PO4/PE shows superior performance in the extraction of trace U(VI) from seawater. The adsorption process followed the second-order kinetics model and the Langmuir model. The maximum adsorption capacity of PO4/PE for U(VI) reaches 173.8 mg/g at pH 8.2 and 298 K. PO4/PE can be effectively regenerated by 0.1 mol/L Na2CO3 and reused well even after eight cycles. Experimental results offer a new approach for U(VI) uptake from seawater.
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Affiliation(s)
- Dadong Shao
- Institute
of Nuclear Physics and Chemistry, China
Academy of Engineering Physics, No. 64 Mianshan Road, Mianyang 621900, P. R. China
| | - Yuying Li
- School
of Chemistry & Environmental Engineering, Wuyi University, No.
2 Dongcheng Road, Jiangmen 529020, P. R. China
| | - Xiaolin Wang
- Institute
of Nuclear Physics and Chemistry, China
Academy of Engineering Physics, No. 64 Mianshan Road, Mianyang 621900, P. R. China
- E-mail: (X.W.)
| | - Sheng Hu
- Institute
of Nuclear Physics and Chemistry, China
Academy of Engineering Physics, No. 64 Mianshan Road, Mianyang 621900, P. R. China
- E-mail: (S.H.)
| | - Jun Wen
- Institute
of Nuclear Physics and Chemistry, China
Academy of Engineering Physics, No. 64 Mianshan Road, Mianyang 621900, P. R. China
| | - Jie Xiong
- Institute
of Nuclear Physics and Chemistry, China
Academy of Engineering Physics, No. 64 Mianshan Road, Mianyang 621900, P. R. China
| | - Abdullah M. Asiri
- Chemistry
Department, Faculty of Science, King Abdulaziz
University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Hadi M. Marwani
- Chemistry
Department, Faculty of Science, King Abdulaziz
University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
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15
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Zeng J, Zhang H, Sui Y, Hu N, Ding D, Wang F, Xue J, Wang Y. New Amidoxime-Based Material TMP-g-AO for Uranium Adsorption under Seawater Conditions. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b05006] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jiayun Zeng
- Key
Discipline Laboratory for National Defense for Biotechnology in Uranium
Mining and Hydrometallurgy, University of South China, Hengyang 421001, China
| | - Hui Zhang
- Key
Discipline Laboratory for National Defense for Biotechnology in Uranium
Mining and Hydrometallurgy, University of South China, Hengyang 421001, China
| | - Yang Sui
- Hunan Taohuajiang
Nuclear Power Co., Ltd, Yiyang 413000, China
| | - Nan Hu
- Key
Discipline Laboratory for National Defense for Biotechnology in Uranium
Mining and Hydrometallurgy, University of South China, Hengyang 421001, China
| | - Dexin Ding
- Key
Discipline Laboratory for National Defense for Biotechnology in Uranium
Mining and Hydrometallurgy, University of South China, Hengyang 421001, China
| | - Fang Wang
- Key
Discipline Laboratory for National Defense for Biotechnology in Uranium
Mining and Hydrometallurgy, University of South China, Hengyang 421001, China
| | - Jinhua Xue
- Key
Discipline Laboratory for National Defense for Biotechnology in Uranium
Mining and Hydrometallurgy, University of South China, Hengyang 421001, China
| | - Yongdong Wang
- Key
Discipline Laboratory for National Defense for Biotechnology in Uranium
Mining and Hydrometallurgy, University of South China, Hengyang 421001, China
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