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Naik MUD. Adsorbents for the Uranium Capture from Seawater for a Clean Energy Source and Environmental Safety: A Review. ACS OMEGA 2024; 9:12380-12402. [PMID: 38524451 PMCID: PMC10956418 DOI: 10.1021/acsomega.3c07961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 01/27/2024] [Accepted: 02/01/2024] [Indexed: 03/26/2024]
Abstract
On the global level, uranium is considered the main nuclear energy source, and its removal from terrestrial ores is enough to last until the end of the current century. Therefore, a major focus is attracted toward the capture of uranium from a sustainable source (seawater). Uranium recovery from seawater has been reported over the last few decades, and recently many efforts have been devoted to the preparation of such adsorbents with higher selectivity and adsorption capacity. The purpose of this review is to report the advancement in adsorbent preparation and modification of porous materials. It also discusses challenges such as adsorbent selectivity, low uranium concentration in seawater, contact time, biofouling, and the solution to the problems necessary to ensure a better adsorption performance of the adsorbent.
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Affiliation(s)
- Mehraj-ud-din Naik
- Department of Chemical Engineering,
College of Engineering, Jazan University, Jazan 45142, Kingdom of Saudi Arabia
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2
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Ioannidis I, Pashalidis I, Arkas M. Actinide Ion (Americium-241 and Uranium-232) Interaction with Hybrid Silica-Hyperbranched Poly(ethylene imine) Nanoparticles and Xerogels. Gels 2023; 9:690. [PMID: 37754371 PMCID: PMC10530514 DOI: 10.3390/gels9090690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 08/22/2023] [Accepted: 08/23/2023] [Indexed: 09/28/2023] Open
Abstract
The binding of actinide ions (Am(III) and U(VI)) in aqueous solutions by hybrid silica-hyperbranched poly(ethylene imine) nanoparticles (NPs) and xerogels (XGs) has been studied by means of batch experiments at different pH values (4, 7, and 9) under ambient atmospheric conditions. Both materials present relatively high removal efficiency at pH 4 and pH 7 (>70%) for Am(III) and U(VI). The lower removal efficiency for the nanoparticles is basically associated with the compact structure of the nanoparticles and the lower permeability and access to active amine groups compared to xerogels, and the negative charge of the radionuclide species is formed under alkaline conditions (e.g., UO2(CO3)34- and Am(CO3)2-). Generally, the adsorption process is relatively slow due to the very low radionuclide concentrations used in the study and is basically governed by the actinide diffusion from the aqueous phase to the solid surface. On the other hand, adsorption is favored with increasing temperature, assuming that the reaction is endothermic and entropy-driven, which is associated with increasing randomness at the solid-liquid interphase upon actinide adsorption. To the best of our knowledge, this is the first study on hybrid silica-hyperbranched poly(ethylene imine) nanoparticle and xerogel materials used as adsorbents for americium and uranium at ultra-trace levels. Compared to other adsorbent materials used for binding americium and uranium ions, both materials show far higher binding efficiency. Xerogels could remove both actinides even from seawater by almost 90%, whereas nanoparticles could remove uranium by 80% and americium by 70%. The above, along with their simple derivatization to increase the selectivity towards a specific radionuclide and their easy processing to be included in separation technologies, could make these materials attractive candidates for the treatment of radionuclide/actinide-contaminated water.
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Affiliation(s)
- Ioannis Ioannidis
- Laboratory of Radioanalytical and Environmental Chemistry, Department of Chemistry, University of Cyprus, P.O. Box 20537, Cy-1678 Nicosia, Cyprus;
| | - Ioannis Pashalidis
- Laboratory of Radioanalytical and Environmental Chemistry, Department of Chemistry, University of Cyprus, P.O. Box 20537, Cy-1678 Nicosia, Cyprus;
| | - Michael Arkas
- National Centre for Scientific Research “Demokritos”, Institute of Nanoscience and Nanotechnology, 15310 Athens, Greece
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Maity T, Aggarwal A, Dasgupta S, Velachi V, Singha Deb AK, Ali SM, Maiti PK. Efficient Removal of Uranyl Ions Using PAMAM Dendrimer: Simulation and Experiment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:6794-6802. [PMID: 37126805 DOI: 10.1021/acs.langmuir.3c00332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
In this work, using atomistic molecular dynamics (MD) simulations and polymer-assisted ultrafiltration experiments, we explore the adsorption and removal of uranyl ions from aqueous solutions using poly(amidoamine) (PAMAM) dendrimers. The effects of uranyl ion concentration and the pH of the solution were examined for PAMAM dendrimers of generations 3, 4, and 5. Our simulation results show that PAMAM has a high adsorption capacity for the uranyl ions. The adsorption capacity increases with increasing concentration of uranyl ions for all 3 generations of PAMAM in agreement with experimental findings. We find that the number of uranyl ions bound to PAMAM is significantly higher in acidic solutions (pH < 3) as compared to neutral solutions (pH ∼ 7) for all uranyl ion concentrations. Additionally, we find an increase in the number of adsorbed uranyl ions to PAMAM with the increase in the dendrimer generation. This increase is due to the greater number of binding sites present for higher-generation PAMAM dendrimers. Our simulation study shows that nitrate ions form a solvation shell around uranyl ions, which allows them to bind to PAMAM binding sites, including the amide, amine, and carbonyl groups. In polymer-assisted ultrafiltration (PAUF) experiments, the removal percentage of uranyl ions by G3 PAMAM dendrimer increased from 36.3% to 42.6% as the metal ion concentration increased from 2.1 × 10-5 M to 10.5 × 10-5 M at a pH of 2. Our combined experiment and simulation study suggests that PAMAM is an effective adsorbent for removing uranyl ions from aqueous solutions.
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Affiliation(s)
- Tarun Maity
- Center for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India
| | - Abhishek Aggarwal
- Center for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India
| | - Subhadeep Dasgupta
- Center for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India
| | - Vasumathi Velachi
- PG & Research Department of Physics, Affiliated to Bharathidasan University, Holy Cross College, Tiruchirappalli 620002, India
| | | | - Sk Musharaf Ali
- Chemical Engineering Division, Bhabha Atomic Research Centre, Mumbai 91-400085, India
| | - Prabal K Maiti
- Center for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India
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Application of Hydrogen-Bonded Organic Frameworks in Environmental Remediation: Recent Advances and Future Trends. SEPARATIONS 2023. [DOI: 10.3390/separations10030196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023] Open
Abstract
The hydrogen-bonded organic frameworks (HOFs) are a class of porous materials with crystalline frame structures, which are self-assembled from organic structures by hydrogen bonding in non-covalent bonds π-π packing and van der Waals force interaction. HOFs are widely used in environmental remediation due to their high specific surface area, ordered pore structure, pore modifiability, and post-synthesis adjustability of various physical and chemical forms. This work summarizes some rules for constructing stable HOFs and the synthesis of HOF-based materials (synthesis of HOFs, metallized HOFs, and HOF-derived materials). In addition, the applications of HOF-based materials in the field of environmental remediation are introduced, including adsorption and separation (NH3, CO2/CH4 and CO2/N2, C2H2/C2He and CeH6, C2H2/CO2, Xe/Kr, etc.), heavy metal and radioactive metal adsorption, organic dye and pesticide adsorption, energy conversion (producing H2 and CO2 reduced to CO), organic dye degradation and pollutant sensing (metal ion, aniline, antibiotic, explosive steam, etc.). Finally, the current challenges and further studies of HOFs (such as functional modification, molecular simulation, application extension as remediation of contaminated soil, and cost assessment) are discussed. It is hoped that this work will help develop widespread applications for HOFs in removing a variety of pollutants from the environment.
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5
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Mei D, Liu L, Yan B. Adsorption of uranium (VI) by metal-organic frameworks and covalent-organic frameworks from water. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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6
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Sakr AK, Abdel Aal MM, Abd El-Rahem KA, Allam EM, Abdel Dayem SM, Elshehy EA, Hanfi MY, Alqahtani MS, Cheira MF. Characteristic Aspects of Uranium(VI) Adsorption Utilizing Nano-Silica/Chitosan from Wastewater Solution. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12213866. [PMID: 36364642 PMCID: PMC9658519 DOI: 10.3390/nano12213866] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 10/23/2022] [Accepted: 10/26/2022] [Indexed: 05/13/2023]
Abstract
A new nano-silica/chitosan (SiO2/CS) sorbent was created using a wet process to eliminate uranium(VI) from its solution. Measurements using BET, XRD, EDX, SEM, and FTIR were utilized to analyze the production of SiO2/CS. The adsorption progressions were carried out by pH, SiO2/CS dose, temperature, sorbing time, and U(VI) concentration measurements. The optimal condition for U(VI) sorption (165 mg/g) was found to be pH 3.5, 60 mg SiO2/CS, for 50 min of sorbing time, and 200 mg/L U(VI). Both the second-order sorption kinetics and Langmuir adsorption model were observed to be obeyed by the ability of SiO2/CS to eradicate U(VI). Thermodynamically, the sorption strategy was a spontaneous reaction and exothermic. According to the findings, SiO2/CS had the potential to serve as an effectual sorbent for U(VI) displacement.
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Affiliation(s)
- Ahmed K. Sakr
- Department of Civil and Environmental Engineering, Wayne State University, 5050 Anthony Wayne Drive, Detroit, MI 48202, USA
- Correspondence: (A.K.S.); (M.F.C.)
| | | | | | - Eman M. Allam
- Nuclear Materials Authority, El Maadi, Cairo 11381, Egypt
| | | | | | - Mohamed Y. Hanfi
- Nuclear Materials Authority, El Maadi, Cairo 11381, Egypt
- Institute of Physics and Technology, Ural Federal University, St. Mira, 19, 620002 Yekaterinburg, Russia
| | - Mohammed S. Alqahtani
- Department of Radiological Sciences, College of Applied Medical Sciences, King Khalid University, Abha 61421, Saudi Arabia
- BioImaging Unit, Space Research Centre, University of Leicester, Michael Atiyah Building, Leicester LE1 7RH, UK
| | - Mohamed F. Cheira
- Department of Civil and Environmental Engineering, Wayne State University, 5050 Anthony Wayne Drive, Detroit, MI 48202, USA
- Correspondence: (A.K.S.); (M.F.C.)
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7
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Li L, Li H, Lin M, Wen J, Hu S. Effects of chain conformation on uranium adsorption performance of amidoxime adsorbents. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122777] [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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8
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Miao X, Dong Z, Zhai M, Zhao L. Radiation synthesis of imidazolium-based polymeric ionic liquid gel for efficient adsorption of Re(VII) and U(VI) from aqueous solution. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:69967-69979. [PMID: 35579833 DOI: 10.1007/s11356-022-20763-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 05/07/2022] [Indexed: 06/15/2023]
Abstract
In this research, an imidazolium-based polymeric ionic liquid (PIL) gel was effectively synthesized in one step via electron beam (EB) radiation technology. The synthesized gel with gel fraction of 78% under 80 kGy was used for the adsorption and separation of Re(VII) and U(VI). The structure of the gel was characterized by FTIR, SEM, BET, and XPS. Furthermore, batch adsorption was experimented to explore its performance of Re(VII) and U(VI) removal. The two adsorption processes all more fitted the Langmuir isotherm model with the maximum adsorption capacities of 892.9 mg/g for Re(VII) and 243.9 mg/g for U(VI). The adsorption reached equilibrium within 1 min for Re(VII), while within 4 min for U(VI), showing its greatly rapid adsorption rate because of its three-dimensional porous network structure. In addition, the separation experiments of Re/U replied that PIL gel could effectively separate Re(VII) from the simulated uranium leaching solution. Regeneration experiments present the good reusability of PIL gel. This work demonstrated the practical application of EB-radiation technology in the synthesis of PIL gel, which is a promising adsorbent for Re(VII) and U(VI) recovery .
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Affiliation(s)
- Xinying Miao
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Zhen Dong
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Maolin Zhai
- Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Key Laboratory of Polymer Chemistry and Physics of the Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Long Zhao
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
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9
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Efficient separation of uranium in solution by ZnFe2O4 doped with TiO2: Adsorption behaviors and mechanism study. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Ammar H, Shaaban AF, Lasheen TA, Nouh ESA. Preparation of new modified silica gel terminated with phenylphosphonic acid-amide moieties for adsorption of uranium(VI) from aqueous solutions. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08452-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
AbstractPAMAM dendrimers modified silica gel terminated phenylphosphonic acid-amide moieties (Si-6G PAMAM-PPAAM) was prepared for uranium(VI) adsorption from aqueous solutions by batch and fixed-bed column methods. The experimental results showed that the maximum capacity was 434.78 mg g−1. Equilibrium isotherm data obeyed Langmuir isotherm model. Kinetic adsorption followed pseudo-second order model and thermodynamic parameters implied the adsorption was spontaneous, endothermic. The adsorption performance of the new adsorbent toward uranium using fixed-bed column method was also investigated. The investigated adsorbent (Si-6G PAMAM-PPAAM) was successfully used to extract uranium from leach liquor of granitic rock sample.
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11
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Synthesis and characterization of chitosan-vermiculite-lignin ternary composite as an adsorbent for effective removal of uranyl ions from aqueous solution: Experimental and theoretical analyses. Int J Biol Macromol 2022; 209:1234-1247. [PMID: 35461866 DOI: 10.1016/j.ijbiomac.2022.04.128] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 04/08/2022] [Accepted: 04/17/2022] [Indexed: 12/25/2022]
Abstract
Chitosan (Ch), vermiculite (V) and lignin (L) were used as the components of a natural composite adsorbent (Ch-VL) for the removal of the UO22+ ions in aqueous solutions. During the study, we recorded and analyzed the initial UO22+ ion concentration, initial pH, contact time, temperature, and recovery. The recycling performance of the Ch-VL composite was assessed by three sequential adsorption/desorption experiments. Adsorption performance of the Ch-VL composite for UO22+ ions was 600 mg L-1 at pH 4.5 and temperature of 25 °C. Thermodynamic findings, ΔH0:28.1 kJ mol-1, and ΔG0:-14.1 kJ mol-1 showed that adsorption behavior was endothermic and spontaneous. Its maximum adsorption capacity was 0.322 mol kg-1, obtained from the Langmuir isotherm model. The adsorption kinetics indicated that it followed the pseudo-second-order and intraparticle diffusion rate kinetics. The adsorption thermodynamic shown indicated that the UO22+ ion adsorption was both spontaneous and endothermic. The adsorption process was enlightened by FT-IR and SEM-EDX analyses. The study suggested a simple and cost-effective approach for the removal of toxic UO22+ ions from wastewater. To highlight the adsorption mechanism, DFT calculations were performed. Theoretical results are in good agreement with experimental observations.
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12
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Wang Q, Zhu S, Xi C, Zhang F. A Review: Adsorption and Removal of Heavy Metals Based on Polyamide-amines Composites. Front Chem 2022; 10:814643. [PMID: 35308790 PMCID: PMC8931339 DOI: 10.3389/fchem.2022.814643] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 01/17/2022] [Indexed: 11/24/2022] Open
Abstract
In recent years, the problem of heavy metal pollution has become increasingly prominent, so it is urgent to develop new heavy metal adsorption materials. Compared with many adsorbents, the polyamide-amine dendrimers (PAMAMs) have attracted extensive attention of researchers due to its advantages of macro-molecular cavity, abundant surface functional groups, non-toxicity, high efficiency and easy modification. But in fact, it is not very suitable as an adsorbent because of its solubility and difficulty in separation, which also limits its application in environmental remediation. Therefore, in order to make up for the shortcomings of this material to a certain extent, the synthesis and development of polymer composite materials based on PAMAMs are increasingly prominent in the direction of solving heavy metal pollution. In this paper, the application of composites based on PAMAMs and inorganic or organic components in the adsorption of heavy metal ions is reviewed. Finally, the prospects and challenges of PAMAMs composites for removal of heavy metal ions in water environment are discussed.
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Wu M, Ding L, Liao J, Zhang Y, Zhu W. Preparation of novel porous Al 2O 3-SiO 2nanocomposites via solution-freeze-drying-calcination method for the efficient removal of uranium in solution. NANOTECHNOLOGY 2021; 33:095705. [PMID: 34814117 DOI: 10.1088/1361-6528/ac3c7a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 11/23/2021] [Indexed: 06/13/2023]
Abstract
In this work, the efficient extraction of uranium in solution using Al2O3-SiO2-T was reported. Kinetics and isotherm models indicated that the removal process of uranium on Al2O3-SiO2-T accorded with pseudo-second-order kinetic model and Langmuir isotherm model, which showed that the adsorption process was a uniform mono-layer chemical behavior. The maximum adsorption capacity of Al2O3-SiO2-T reached 738.7 mg g-1, which was higher than AlNaO6Si2(349.8 mg g-1) and Al2O3-SiO2-NT (453.1 mg g-1), indicating that the addition of template could effectively improve the adsorption performance of Al2O3-SiO2to uranium. Even after five cycles of adsorption-desorption, the removal percentage of uranium on Al2O3-SiO2-T remained 96%. Besides, the extraction efficiency of uranium on Al2O3-SiO2-T was 72.5% in simulated seawater, which suggested that the Al2O3-SiO2-T was expected to be used for uranium extraction from seawater. Further, the interaction mechanism between Al2O3-SiO2-T and uranium species was studied. The results showed that the electrostatic interaction and complexation played key roles in the adsorption process of Al2O3-SiO2-T to uranium.
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Affiliation(s)
- Maoling Wu
- State Key Laboratory of Environment-friendly Energy Materials, Sichuan Co-Innovation Center for New Energetic Materials, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Defence Science & Technology, Southwest University of Science and Technology, Mianyang 621010, People's Republic of China
| | - Ling Ding
- State Key Laboratory of Environment-friendly Energy Materials, Sichuan Co-Innovation Center for New Energetic Materials, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Defence Science & Technology, Southwest University of Science and Technology, Mianyang 621010, People's Republic of China
| | - Jun Liao
- State Key Laboratory of Environment-friendly Energy Materials, Sichuan Co-Innovation Center for New Energetic Materials, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Defence Science & Technology, Southwest University of Science and Technology, Mianyang 621010, People's Republic of China
| | - Yong Zhang
- State Key Laboratory of Environment-friendly Energy Materials, Sichuan Co-Innovation Center for New Energetic Materials, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Defence Science & Technology, Southwest University of Science and Technology, Mianyang 621010, People's Republic of China
| | - Wenkun Zhu
- State Key Laboratory of Environment-friendly Energy Materials, Sichuan Co-Innovation Center for New Energetic Materials, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Defence Science & Technology, Southwest University of Science and Technology, Mianyang 621010, People's Republic of China
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14
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Purification of uranium-contaminated radioactive water by adsorption: A review on adsorbent materials. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119675] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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15
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Poly(amidoamine) dendrimer decorated dendritic fibrous nano-silica for efficient removal of uranium (VI). J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122511] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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16
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Şenol ZM, Keskin ZS, Özer A, Şimşek S. Application of kaolinite-based composite as an adsorbent for removal of uranyl ions from aqueous solution: kinetics and equilibrium study. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-08070-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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17
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Qin W, Xu K, Wang J, Cui X, Zhang J, Weng Y. Phosphorous-functionalized PAMAM dendrimers supported on mesoporous silica for Zr(iv) and Hf(iv) separation. RSC Adv 2021; 11:34754-34765. [PMID: 35494761 PMCID: PMC9042711 DOI: 10.1039/d1ra05781b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 09/06/2021] [Indexed: 11/21/2022] Open
Abstract
To overcome the urgency of zirconium and hafnium separation, a novel mesoporous silica sorbent (PS-G1.0-MSNs) modified with phosphorous-functionalized G1.0 PAMAM dendrimers was prepared. The adsorption and separation behaviors of PS-G1.0-MSNs adsorbent on Zr(iv) and Hf(iv) were perfromed as a function of acidity, contact time, temperature, and ion concentrations by batch sorption methods. The maximum adsorption capacities for Zr(iv) and Hf(iv) were 25.7 mg g−1 and 5.36 mg g−1 under optimal experimental conditions, respectively, and the separation factor βHf/Zr = 2.0 > 1 demonstrated that the prepared sorbent had preferential selectivity for Hf(iv) in rich Zr(iv) solution. Moreover, kinetic data indicated that the sorption process on Zr(iv) and Hf(iv) achieved equilibrium within 120 min, and followed the pseudo-first-order model with a rate-determining step. The adsorption amount increased as temperature raised from 283 K to 303 K and the isothermal data plotted with the Langmuir model was better than the Freundlich model with monolayer behavior. Thermodynamic data analysis indicated that the sorption process was spontaneous and endothermic. Furthermore, XPS analysis revealed that the metal ion adsorption was mainly induced by the chemical coordination of Zr(iv) and Hf(iv) ions with N, O, P atoms of amide and phosphate groups. The present work provides good guidelines on the design of high efficient sorbent for the separation of Hf(iv) from Zr(iv) solutions. The adsorption and separation process of PS-G1.0-MSNs on Zr(iv) and Hf(iv).![]()
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Affiliation(s)
- Wei Qin
- Anhui Province Key Laboratory of Optoelectronic and Magnetism Functional Materials, Anqing Normal University Anqing 246011 China +86-556-5708017
| | - Kaixuan Xu
- Anhui Province Key Laboratory of Optoelectronic and Magnetism Functional Materials, Anqing Normal University Anqing 246011 China +86-556-5708017
| | - Junwei Wang
- Anhui Province Key Laboratory of Optoelectronic and Magnetism Functional Materials, Anqing Normal University Anqing 246011 China +86-556-5708017
| | - Xiaofeng Cui
- Anhui Province Key Laboratory of Optoelectronic and Magnetism Functional Materials, Anqing Normal University Anqing 246011 China +86-556-5708017
| | - Jianli Zhang
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University Yinchuan 750021 China
| | - Yaqing Weng
- Jiangxi Academy of Sciences Nanchang 330012 China
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Bayou N, Aït-Amar H, Belkhiri S, Bouhila Z, Houhoune F, Khemaissia S, Azli T. Equilibrium, isotherms and kinetic studies of uranium sorption onto AlPO 4 -5 and SAPO-5 materials. CR CHIM 2021. [DOI: 10.5802/crchim.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Şenol ZM. A chitosan-based composite for adsorption of uranyl ions; mechanism, isothems, kinetics and thermodynamics. Int J Biol Macromol 2021; 183:1640-1648. [PMID: 34044032 DOI: 10.1016/j.ijbiomac.2021.05.130] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/28/2021] [Accepted: 05/19/2021] [Indexed: 10/21/2022]
Abstract
The present paper describes a green and cost-effective approach to investigate chitosan-sepiolite (Ch-Sep) composite as an adsorbent for removal of UO22+ ions in aqueous solution. The Ch-Sep composite was prepared as a beads using with two cross-linking agents: tripolyphosphate (TPP) and epichlorohydrin (ECH). Their adsorption properties for the removal of UO22+ ions in aqueous solution by batch experimental conditions were studied. The adsorptive removal processes of UO22+ ions from aqueous solution were evaluated by Langmuir, Freundlich and Dubinin-Radushkevich isotherm models, and was found to be perfectly fit to the Langmuir model (R2 = 0.971). The maximum adsorption capacity was 0.220 mol kg-1 at 25 °C from Langmuir isotherm model. Adsorption energy was 12.1 kJ mol-1 indicating that the adsorption process was chemical. The adsorption kinetics followed the pseudo second order and intra particle diffusion models. The thermodynamics parameters of UO22+ ions removal from aqueous solution was confirmed spontaneous, endothermic and possible at higher temperatures behavior of adsorption process. The adsorption mechanism of UO22+ ions onto Ch-Sep composite beads was investigated by FT-IR and SEM analysis. These findings revealed the effectiveness and potential of the newly synthesized Ch-Sep composite beads for the removal of UO22+ ions.
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Affiliation(s)
- Zeynep Mine Şenol
- Cumhuriyet University, Zara Vocational School, Department of Food Technology, 58140 Sivas, Turkey.
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Senol-Arslan D. Isotherms, kinetics and thermodynamics of pb(ii) adsorption by crosslinked chitosan/sepiolite composite. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03688-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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21
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Xie X, Wang Y, Zhou W, Chen C, Xiong Z. Investigation of U(VI) adsorption properties of poly(trimesoyl chloride-co-polyethyleneimine). J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.121966] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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22
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Zhang G, Xiao Y, Yin Q, Yan J, Zang C, Zhang H. In Situ Synthesis of Silver Nanoparticles on Amino-Grafted Polyacrylonitrile Fiber and Its Antibacterial Activity. NANOSCALE RESEARCH LETTERS 2021; 16:36. [PMID: 33591425 PMCID: PMC7886948 DOI: 10.1186/s11671-021-03496-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 02/07/2021] [Indexed: 05/28/2023]
Abstract
In this study, amino hyperbranched polymers (HBP)-grafted polyacrylonitrile (PAN) fiber was prepared through an amidation reaction in an autoclave. The prepared PAN-G-HBP fiber can complex Ag+ through amino groups of amino HBP, and in a hot steaming condition, Ag+ can be converted to Ag0 through the reducibility of HBP. PAN-G-HBP and Ag nanoparticles (NPs)-coated fibers were then characterized through FTIR, UV-VIS DRS, FE-SEM, EDS, XPS and antibacterial measurement. FTIR results confirmed HBP was grafted on the surface of PAN fiber. FE-SEM showed that after grafting with HBP, the average diameter of PAN fibers was amplified. EDS, XPS, and UV-VIS DRS method indicated that under hot steaming condition and with the reducibility of HBP, Ag NPs uniform coating on the PAN-G-HBP. Ag NPs-coated fibers exhibits excellent antibacterial property against Escherichia coli and Staphylococcus aureus. Even under 20 times home washing conditions, the antibacterial reduction of Ag NPs-coated PAN fiber can achieved more than 98.94%.
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Affiliation(s)
- Guangyu Zhang
- National and Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Health, School of Textile and Clothing, Nantong University, Nantong, 226019 People’s Republic of China
| | - Yao Xiao
- National and Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Health, School of Textile and Clothing, Nantong University, Nantong, 226019 People’s Republic of China
| | - Qitao Yin
- National and Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Health, School of Textile and Clothing, Nantong University, Nantong, 226019 People’s Republic of China
| | - Jiawei Yan
- Faculty of Textile Science and Technology, Shinshu University, 3-15-1, Tokida, Ueda, Nagano, 386-8567 Japan
| | - Chuanfeng Zang
- National and Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Health, School of Textile and Clothing, Nantong University, Nantong, 226019 People’s Republic of China
| | - Huiyun Zhang
- Dongfang Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, 100078 People’s Republic of China
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Zhang Q, Zhang S, Zhao J, Wei P, Wang C, Liu P, Zhao X, Zeng K, Wu F, Liu Z. Unexpected ultrafast and highly efficient removal of uranium from aqueous solutions by a phosphonic acid and amine functionalized polymer adsorbent. NEW J CHEM 2021. [DOI: 10.1039/d1nj00218j] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
P(DMAA–B2MP) was prepared by solvothermal polymerization and exhibits fast and efficient sorption of uranium(vi) from aqueous solutions.
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Affiliation(s)
- Qinghua Zhang
- State Key Laboratory of Nuclear Resources and Environment
- East China University of Technology
- Nanchang 330013
- China
| | - Shiao Zhang
- State Key Laboratory of Nuclear Resources and Environment
- East China University of Technology
- Nanchang 330013
- China
| | - Jizhou Zhao
- State Key Laboratory of Nuclear Resources and Environment
- East China University of Technology
- Nanchang 330013
- China
| | - Peng Wei
- State Key Laboratory of Nuclear Resources and Environment
- East China University of Technology
- Nanchang 330013
- China
| | - Changfu Wang
- State Key Laboratory of Nuclear Resources and Environment
- East China University of Technology
- Nanchang 330013
- China
| | - Pan Liu
- State Key Laboratory of Nuclear Resources and Environment
- East China University of Technology
- Nanchang 330013
- China
| | - Xiaohong Zhao
- College of Chemistry
- Nanchang University
- Nanchang 330031
- China
| | - Kai Zeng
- State Key Laboratory of Nuclear Resources and Environment
- East China University of Technology
- Nanchang 330013
- China
| | - Faming Wu
- State Key Laboratory of Nuclear Resources and Environment
- East China University of Technology
- Nanchang 330013
- China
| | - Zhirong Liu
- State Key Laboratory of Nuclear Resources and Environment
- East China University of Technology
- Nanchang 330013
- China
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24
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Bai J, Ma X, Gong C, Chen Y, Yan H, Wang K, Wang J. A novel amidoxime functionalized porous resins for rapidly selective uranium uptake from solution. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114443] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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25
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Synthesis and characterization of chitosan–vermiculite composite beads for removal of uranyl ions: isotherm, kinetics and thermodynamics studies. J Radioanal Nucl Chem 2020. [DOI: 10.1007/s10967-020-07481-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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26
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Beiki S, Moniri E, Hassani AH, Ahmad Panahi H. Preparation and Characterization of Dendrimer‐Modified Magnetite Nanoparticles for Adsorption of Humic Acid from Aqueous Solution. ChemistrySelect 2020. [DOI: 10.1002/slct.202000737] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Somayeh Beiki
- Department of Natural Resources and EnvironmentScience and Research BranchIslamic Azad University Tehran Iran
| | - Elham Moniri
- Department of ChemistryVaramin (Pishva) BranchIslamic Azad University Tehran Iran
| | - Amir Hessam Hassani
- Department of Natural Resources and EnvironmentScience and Research BranchIslamic Azad University Tehran Iran
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Wang X, Feng J, Cai Y, Fang M, Kong M, Alsaedi A, Hayat T, Tan X. Porous biochar modified with polyethyleneimine (PEI) for effective enrichment of U(VI) in aqueous solution. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 708:134575. [PMID: 31806329 DOI: 10.1016/j.scitotenv.2019.134575] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 09/01/2019] [Accepted: 09/19/2019] [Indexed: 06/10/2023]
Abstract
This study investigated the modification of moso bamboo biochar with polyethyleneimine (PEI) for the efficient enrichment of U(VI) in aqueous solution. The alkali/acid treated biochars with amine groups (PEI-alkali-biochar or PEI-acid-biochar) were characterized by SEM, BET, TGA, FTIR and XPS. The effects of contact time, U(VI) concentration, pH and ionic strength on U(VI) adsorption by PEI-alkali/acid-biochar were studied. U(VI) adsorption process on PEI-alkali/acid-biochar obeys pseudo-second-order model. Intraparticle diffusion model was used to investigate the controlled factors of the adsorption process. The fitting of Langmuir model gives the maximum adsorption capacities of 212.7 mg/g for PEI-alkali-biochar and 185.6 mg/g for PEI-acid-biochar, which are almost 9-10 times higher than that of pristine biochar (20.1 mg/g). The thermodynamic parameters illustrate that U(VI) adsorption on PEI-alkali/acid-biochar is an exothermic and spontaneous process. The FTIR and XPS analyses imply that U(VI) adsorption by PEI-alkali/acid-biochar is mainly controlled by complexation between U(VI) and amine groups. PEI-alkali/acid-biochar could be considered as a low-cost and outstanding material for U(VI) removal from radionuclide wastewater in practical application.
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Affiliation(s)
- Xin Wang
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Jinghua Feng
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Yawen Cai
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Ming Fang
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China.
| | - Mingguang Kong
- Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - Ahmed Alsaedi
- NAAM Research Group, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Tasawar Hayat
- NAAM Research Group, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Xiaoli Tan
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China; NAAM Research Group, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
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28
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Adsorption of uranium(VI) from aqueous solution by novel dibutyl imide chelating resin. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06949-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Song J, Han B, Song H, Yang J, Zhang L, Ning P, Lin Z. Nonreductive biomineralization of uranium by Bacillus subtilis ATCC-6633 under aerobic conditions. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2019; 208-209:106027. [PMID: 31442938 DOI: 10.1016/j.jenvrad.2019.106027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 08/01/2019] [Accepted: 08/10/2019] [Indexed: 06/10/2023]
Abstract
Nonreductive biomineralization of uranium is a promising methodology for the removal of uranium contamination as it provides stable products and wide applications. However, the efficiency of mineralization has become a major obstacle for the removal of uranium contamination by this technology, and the mineralizing process still remains largely obscure. To solve this problem in a practical way, we report a fast nonreductive biomineralization process of uranium by Bacillus subtilis ATCC-6633, a widespread bacterium with environmentally-friendly applications. In this system, we demonstrated that the size and crystallization degree of the obtained nonreduced biomineralized products is significantly superior to the results reported in the literature under comparable conditions. Meanwhile, combined with SEM, TEM, and FT-IR, a mineralization process of uranium transfer from the outer surface of the Bacillus subtilis ATCC-6633 to the internal has been clearly observed, which was accompanied by the evolution of amorphous U(VI) to crystalline uramphite. This work uncovers whole-process insights into the nonreductive biomineralization of uranium by Bacillus subtilis ATCC-6633, paving a new way for the rapid and sustained removal of uranium contamination.
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Affiliation(s)
- Jianing Song
- School of Environment and Energy, The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters (Ministry of Education), South China University of Technology, Guangzhou, 510006, China; Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, South China University of Technology, Guangzhou, 510006, China
| | - Bin Han
- School of Environment and Energy, The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters (Ministry of Education), South China University of Technology, Guangzhou, 510006, China; Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, South China University of Technology, Guangzhou, 510006, China
| | - Han Song
- School of Environment and Energy, The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters (Ministry of Education), South China University of Technology, Guangzhou, 510006, China; Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, South China University of Technology, Guangzhou, 510006, China
| | - Jinrong Yang
- School of Environment and Energy, The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters (Ministry of Education), South China University of Technology, Guangzhou, 510006, China; Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, South China University of Technology, Guangzhou, 510006, China
| | - Lijuan Zhang
- School of Environment and Energy, The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters (Ministry of Education), South China University of Technology, Guangzhou, 510006, China; Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, South China University of Technology, Guangzhou, 510006, China.
| | - Ping Ning
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, China
| | - Zhang Lin
- School of Environment and Energy, The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters (Ministry of Education), South China University of Technology, Guangzhou, 510006, China; Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, South China University of Technology, Guangzhou, 510006, China
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Pinaeva U, Dietz T, Al Sheikhly M, Balanzat E, Castellino M, Wade T, Clochard M. Bis[2-(methacryloyloxy)ethyl] phosphate radiografted into track-etched PVDF for uranium (VI) determination by means of cathodic stripping voltammetry. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2019.06.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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31
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Gül ÜD, Şenol ZM, Gürsoy N, Şimşek S. Effective UO 22+ removal from aqueous solutions using lichen biomass as a natural and low-cost biosorbent. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2019; 205-206:93-100. [PMID: 31121425 DOI: 10.1016/j.jenvrad.2019.05.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 04/29/2019] [Accepted: 05/10/2019] [Indexed: 06/09/2023]
Abstract
The UO22+ biosorption properties of a lichen, Evernia prunastri, from aqueous solutions were investigated. The widely occurring lichen samples were collected from the forest in Bilecik-Turkey. The UO22+ biosorption onto lichen was characterized by FT-IR and SEM-EDX analysis techniques before and after biosorption. The effects of the solution pH, biosorbent dosage, UO22+ concentration, contact time, and temperature on UO22+ biosorption on lichen sample were studied by using the batch method. The isotherm experimental data were described using isotherm models of Langmuir, Freundlich and Dubinin Radushkevich. The maximum UO22+ biosorption capacity of the lichen sample was estimated by the Langmuir equation to be 0.270 mol kg-1. The adsorption energy from the Dubin Radushkevich model was found to be 8.24 kJ mol-1. Kinetic data determined that the biosorption was best described by the pseudo-second-order kinetic model. Thermodynamic findings showed that the biosorption process was endothermic, entropy increased and spontaneous. In conclusion, the lichen appears to be a promising biosorbent for the removal of UO22+ ions from aqueous solutions because of high biosorption capacity, easy usability, low cost, and high reusability performance.
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Affiliation(s)
- Ülküye Dudu Gül
- Bilecik Seyh Edebali University, Vocational School of Health Sciences, 11230, Bilecik, Turkey
| | - Zeynep Mine Şenol
- Cumhuriyet University, Zara Vocational School, Department of Food Technology, 58140, Sivas, Turkey
| | - Nevcihan Gürsoy
- Cumhuriyet University Faculty of Engineering Department of Food Engineering, 58140, Sivas, Turkey
| | - Selçuk Şimşek
- Cumhuriyet University, Faculty of Science, Department of Chemistry, 58140, Sivas, Turkey.
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32
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Xie Y, Chen C, Ren X, Tan X, Song G, Chen D, Alsaedi A, Hayat T. Coupling g-C3N4 nanosheets with metal-organic frameworks as 2D/3D composite for the synergetic removal of uranyl ions from aqueous solution. J Colloid Interface Sci 2019; 550:117-127. [DOI: 10.1016/j.jcis.2019.04.090] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 04/29/2019] [Indexed: 01/26/2023]
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Priyadarshini N, Ilaiyaraja P. Adsorption of U(VI) and Th(IV) from simulated nuclear waste using PAMAM and DGA functionalized PAMAM dendron grafted styrene divinylbenzene chelating resins. CHEMICAL PAPERS 2019. [DOI: 10.1007/s11696-019-00830-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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34
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Xie Y, Chen C, Ren X, Wang X, Wang H, Wang X. Emerging natural and tailored materials for uranium-contaminated water treatment and environmental remediation. PROGRESS IN MATERIALS SCIENCE 2019; 103:180-234. [DOI: https:/doi.org/10.1016/j.pmatsci.2019.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/25/2023]
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35
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Kılınç E, Özdemir S, Yalçın MS, Soylak M. A magnetized fungal solid-phase extractor for the preconcentrations of uranium(VI) and thorium(IV) before their quantitation by ICP-OES. Mikrochim Acta 2019; 186:355. [PMID: 31098920 DOI: 10.1007/s00604-019-3474-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Accepted: 04/29/2019] [Indexed: 11/28/2022]
Abstract
The fungus Bovista plumbea immobilized on γ-Fe2O3 nanoparticles is shown to be a novel sorbent for magnetic solid-phase extractions of U(VI) and Th(IV). The biosorbent was characterized by FT-IR, SEM, and EDX. The effects of pH value, flow rate and volume of sample, amounts of biomass and support material, eluent type, foreign ions and repeated use of the sorbent on extraction efficiency were investigated. The sorption capacities are 41 and 44 mg g-1, respectively, for U(VI) and Th(IV). The results indicated that B. plumbea immobilized onto γ-Fe2O3 nanoparticles can be utilized as a novel material for the preconcentrations of U(VI) and Th(IV) in certified materials and in spiked tap, river and lake waters. Graphical abstract Schematic presentation of a method for preconcentrations of Th(IV) and U(VI) ions using γ-Fe2O3 nanoparticles loaded with the fungus Bovista plumbea.
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Affiliation(s)
- Ersin Kılınç
- Department of Chemistry and Chemical Processing Technologies, Technical Science Vocational School, Dicle University, 21280, Diyarbakır, Turkey.
| | - Sadin Özdemir
- Food Processing Programme, Technical Science Vocational School, Mersin University, 33343, Mersin, Turkey
| | - M Serkan Yalçın
- Department of Chemical and Chemical Processing Technologies, Technical Science Vocational School, Mersin University, 33343, Mersin, Turkey.
| | - Mustafa Soylak
- Department of Chemistry, Faculty of Sciences, Erciyes University, 38039, Kayseri, Turkey.,Technology Research & Application Center (TAUM), Erciyes University, 38039, Kayseri, Turkey
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Pahan S, Panja S, Banerjee D, Dhami PS, Yadav JS, Kaushik CP. Preparation of chitosan functionalized polyamidoamine for the separation of trivalent lanthanides from acidic waste solution. RADIOCHIM ACTA 2019. [DOI: 10.1515/ract-2018-3022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The manuscript deals with the sorption of Am(III) and Eu(III) from pH medium using chitosan functionalized with dendrimer like polyamidoamine (PAMAM) polymers up to third generation. The PAMAM polymers were introduced into chitosan by two step processes and were characterized by various instrumental techniques like FTIR, XRD, TG-DTA. The sorption process was highly pH dependent for both Am(III) and Eu(III) with increasing trend for higher pH of the solution. Kinetics of equilibration was found to be fast with equilibrium attained in 10 min for both the metal ions. Pseudo 2nd order kinetics mechanism was found to be followed for both Am(III) and Eu(III). The sorption process of Eu(III) was found to fit the Langmuir isotherm model with maximum sorption capacity of 6.01 mg/g. There was no effect on the generation of PAMAM Dendron on the efficiency, kinetics or sorption capacity for Am(III) as well as Eu(III). The synthesized different generation of PAMAM functionalized chitosan is a promising material for removal of actinides and lanthanides from waste water solution.
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Affiliation(s)
- S. Pahan
- Process Development Division, Bhabha Atomic Research Centre , Trombay, Mumbai 400085 , India
- Homi Bhabha National Institute, Bhabha Atomic Research Centre , Trombay, Mumbai 400085 , India
| | - S. Panja
- Fuel Reprocessing Division, Bhabha Atomic Research Centre , Trombay, Mumbai 400085 , India
| | - D. Banerjee
- Process Development Division, Bhabha Atomic Research Centre , Trombay, Mumbai 400085 , India
| | - P. S. Dhami
- Fuel Reprocessing Division, Bhabha Atomic Research Centre , Trombay, Mumbai 400085 , India
| | - J. S. Yadav
- Fuel Reprocessing Division, Bhabha Atomic Research Centre , Trombay, Mumbai 400085 , India
| | - C. P. Kaushik
- Waste Management Division , Bhabha Atomic Research Centre , Trombay, Mumbai 400085 , India
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Abstract
The biosorption is an effective and economical method to deal with the wastewater with low concentrations of uranium. In this study, we present a systematic investigation of the adsorption properties, such as the kinetics, thermodynamics, and mechanisms, of modified rice stems. The rice stems treated with 0.5 mol/L NaOH solutions show higher removal percentage of uranium than those unmodified under the conditions of initial pH (pH = 4.0), absorbent dosage (5–8 g/L), temperature (T = 298 K), and adsorption equilibrium time (t = 180 min). The removal percentage of uranium(VI) decreases with increasing initial concentration of uranium(VI). The Langmuir isotherm model, which suggests predominant monolayered sorption, is better than Freundlich and Temkin models to elucidate the adsorption isotherm of adsorbed uranium. Kinetic analyses indicate that the uranium(VI) adsorption of the modified rice stem is mainly controlled by surface adsorption. The pseudo-second-order kinetic model, with the correlation coefficient of R2 = 0.9992, fits the adsorption process much better than other kinetic models (e.g., pseudo-second-order kinetic model, Elovich kinetic model, and intraparticle diffusion model). The thermodynamic parameters ΔG0, ΔH0, and ΔS0 demonstrate that the adsorption of uranium(VI) is an endothermic and spontaneous process, which can be promoted by temperature. The adsorption of uranium can change the morphology and the structure characteristics of the modified rice stem through interaction with the adsorption sites, such as O-H, C=O, Si=O, and P-O on the surface.
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Jain R, Peräniemi S, Jordan N, Vogel M, Weiss S, Foerstendorf H, Lakaniemi AM. Removal and recovery of uranium(VI) by waste digested activated sludge in fed-batch stirred tank reactor. WATER RESEARCH 2018; 142:167-175. [PMID: 29870950 DOI: 10.1016/j.watres.2018.05.042] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 05/22/2018] [Accepted: 05/23/2018] [Indexed: 06/08/2023]
Abstract
This study demonstrated the removal and recovery of uranium(VI) in a fed-batch stirred tank reactor (STR) using waste digested activated sludge (WDAS). The batch adsorption experiments showed that WDAS can adsorb 200 (±9.0) mg of uranium(VI) per g of WDAS. The maximum adsorption of uranium(VI) was achieved even at an acidic initial pH of 2.7 which increased to a pH of 4.0 in the equilibrium state. Desorption of uranium(VI) from WDAS was successfully demonstrated from the release of more than 95% of uranium(VI) using both acidic (0.5 M HCl) and alkaline (1.0 M Na2CO3) eluents. Due to the fast kinetics of uranium(VI) adsorption onto WDAS, the fed-batch STR was successfully operated at a mixing time of 15 min. Twelve consecutive uranium(VI) adsorption steps with an average adsorption efficiency of 91.5% required only two desorption steps to elute more than 95% of uranium(VI) from WDAS. Uranium(VI) was shown to interact predominantly with the phosphoryl and carboxyl groups of the WDAS, as revealed by in situ infrared spectroscopy and time-resolved laser-induced fluorescence spectroscopy studies. This study provides a proof-of-concept of the use of fed-batch STR process based on WDAS for the removal and recovery of uranium(VI).
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Affiliation(s)
- Rohan Jain
- Tampere University of Technology, Faculty of Natural Sciences, P.O. Box 541, FI-33101 Tampere, Finland; Helmholtz-Zentrum Dresden - Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Bautzner Landstraße 400, 01328 Dresden, Germany.
| | - Sirpa Peräniemi
- School of Pharmacy, University of Eastern Finland, P.O. Box 1627, FI-70221 Kuopio, Finland
| | - Norbert Jordan
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Resource Ecology, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - Manja Vogel
- Helmholtz-Zentrum Dresden - Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Bautzner Landstraße 400, 01328 Dresden, Germany; Helmholtz-Zentrum Dresden - Rossendorf, Institute of Resource Ecology, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - Stephan Weiss
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Resource Ecology, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - Harald Foerstendorf
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Resource Ecology, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - Aino-Maija Lakaniemi
- Tampere University of Technology, Faculty of Natural Sciences, P.O. Box 541, FI-33101 Tampere, Finland
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Wen R, Li Y, Zhang M, Guo X, Li X, Li X, Han J, Hu S, Tan W, Ma L, Li S. Graphene-synergized 2D covalent organic framework for adsorption: A mutual promotion strategy to achieve stabilization and functionalization simultaneously. JOURNAL OF HAZARDOUS MATERIALS 2018; 358:273-285. [PMID: 29990815 DOI: 10.1016/j.jhazmat.2018.06.059] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 06/21/2018] [Accepted: 06/25/2018] [Indexed: 06/08/2023]
Abstract
Most of current absorbents are difficult to hold favorable stability and functionality simultaneously when used in condition of high acidity and strong radiation existing in nuclear industry. Herein, a new graphene-synergized 2D covalent organic framework (GS-COF) was obtained via an in-situ loading of a covalent organic framework (TDCOF) on graphene sheets based on a mutual promotion strategy proposed in this work. The corresponding oximation products, o-GS-COF, and also o-TDCOF as a reference object, were respectively prepared subsequently. The results of experiments confirmed that o-GS-COF possesses better acid and irradiation stability than that of o-TDCOF. Adsorption experiments showed that the adsorption capacity of o-GS-COF for uranium is 144.2 mg g-1, higher than that of GO (92.5 mg g-1) and o-TDCOF (105.0 mg g-1), and the maximum adsorption capacity reaches 220.1 mg g-1. In the multi-ions system, o-GS-COF also displayed good selective adsorption property for uranium with SFU/M 35-100 for 5 coexisting divalent metal ions and 14-18 for 5 coexisting trivalent lanthanide ions. The proposed strategy successfully achieved the synergistic improvement of both stability and functionality for the desired adsorbing materials and is of considerable practical utility in the field of design and preparation of reliable high-performance absorbents.
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Affiliation(s)
- Rui Wen
- College of Chemistry, Sichuan University, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Chengdu, 610064, PR China
| | - Yang Li
- College of Chemistry, Sichuan University, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Chengdu, 610064, PR China
| | - Meicheng Zhang
- College of Chemistry, Sichuan University, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Chengdu, 610064, PR China
| | - Xinghua Guo
- College of Chemistry, Sichuan University, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Chengdu, 610064, PR China
| | - Xing Li
- College of Chemistry, Sichuan University, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Chengdu, 610064, PR China
| | - Xiaofeng Li
- College of Chemistry, Sichuan University, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Chengdu, 610064, PR China
| | - Jun Han
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, PR China
| | - Sheng Hu
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, PR China
| | - Wang Tan
- College of Chemistry, Sichuan University, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Chengdu, 610064, PR China
| | - Lijian Ma
- College of Chemistry, Sichuan University, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Chengdu, 610064, PR China.
| | - Shoujian Li
- College of Chemistry, Sichuan University, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Chengdu, 610064, PR China
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40
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Huang X, Yang J, Wang J, Bi J, Xie C, Hao H. Design and synthesis of core-shell Fe 3O 4@PTMT composite magnetic microspheres for adsorption of heavy metals from high salinity wastewater. CHEMOSPHERE 2018; 206:513-521. [PMID: 29778076 DOI: 10.1016/j.chemosphere.2018.04.184] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 04/27/2018] [Accepted: 04/29/2018] [Indexed: 05/22/2023]
Abstract
In this study, a novel magnetic nanoparticles (MNP) modified by an organodisulfide polymer (PTMT) was designed for adsorption of heavy metals (Hg(II), Pb(II) and Cd(II)) from simulated coal chemical high salinity wastewater. The MNP-PTMT nano-composite was synthesize and characterized by SEM, TEM, FTIR, BET, VSM, TGA and XRD. The results indicate that the wanted MNP-PTMT magnetic nanoparticles were successfully obtained by modification. Adsorption experiments were systematically carried out to evaluate the performance of the obtained nanoparticles and to build up the adsorption models. The results demonstrate that the adsorption kinetic and isotherms thermodynamic followed the pseudo-second-order model and the Freundlich equation, respectively. In the presence of the inorganic salt in high salinity wastewater, the adsorption efficiency of MNP-PTMT for heavy metals was still excellent. The magnetic adsorbent could be recovered from aqueous solution by an external magnetic field in 20s and the subsequent regeneration of Hg(II)/Pb(II) loaded MNP-PTMT can be efficiently achieved by using EDTA-2Na solution as desorbent. The novel MNP-PTMT nanoparticles could be used reproductively for five times without apparent decrease in sorption capacity.
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Affiliation(s)
- Xin Huang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), Tianjin 300072, China.
| | - Jinyue Yang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Jingkang Wang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), Tianjin 300072, China
| | - Jingtao Bi
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Chuang Xie
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), Tianjin 300072, China
| | - Hongxun Hao
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), Tianjin 300072, China.
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41
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Guo D, Lou C, Huang Z, Muhammad N, Qiming Z, Wu S, Zhu Y. Fabrication of graphene oxide polymer composite particles with grafted poly(amidoamine) dendrimers and their application in ion chromatography. NEW J CHEM 2018. [DOI: 10.1039/c8nj00754c] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Graphene oxide polymer composite particles with grafted PAMAM dendrimers and their application in ion chromatography.
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Affiliation(s)
- Dandan Guo
- Department of Chemistry
- Xixi Campus
- Zhejiang University
- Hangzhou 310028
- China
| | - Chaoyan Lou
- Department of Chemistry
- Xixi Campus
- Zhejiang University
- Hangzhou 310028
- China
| | - Zhongping Huang
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Nadeem Muhammad
- Department of Chemistry
- Xixi Campus
- Zhejiang University
- Hangzhou 310028
- China
| | - Zhao Qiming
- College of Pharmacy
- Zhejiang Chinese Medical University
- Hangzhou 310053
- China
| | - Shuchao Wu
- Zhejiang Institute of Geology and Mineral Resources
- Hangzhou 310007
- China
| | - Yan Zhu
- Department of Chemistry
- Xixi Campus
- Zhejiang University
- Hangzhou 310028
- China
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42
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Removal of U(VI) and Th(IV) from aqueous solutions by organically modified diatomaceous earth: Evaluation of equilibrium, kinetic and thermodynamic data. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.minpro.2017.08.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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43
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Studies of anionic dendrimer adsorption mechanism on the zirconium(IV) oxide surface – Electrokinetic and thermal properties of nanosized composites. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.09.047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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El-sherif RM, Lasheen T, Jebril E. Fabrication and characterization of CeO 2 -TiO 2 -Fe 2 O 3 magnetic nanoparticles for rapid removal of uranium ions from industrial waste solutions. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.05.119] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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45
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Bayou N, Aït-Amar H, Attou M, Menacer S. Removal of uranium (VI) from nuclear effluents onto aluminophosphate and silicoaluminophosphate molecular sieves. CR CHIM 2017. [DOI: 10.1016/j.crci.2017.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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46
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Ilaiyaraja P, Deb AKS, Ponraju D, Ali SM, Venkatraman B. Surface Engineering of PAMAM-SDB Chelating Resin with Diglycolamic Acid (DGA) Functional Group for Efficient Sorption of U(VI) and Th(IV) from Aqueous Medium. JOURNAL OF HAZARDOUS MATERIALS 2017; 328:1-11. [PMID: 28073058 DOI: 10.1016/j.jhazmat.2017.01.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 12/31/2016] [Accepted: 01/02/2017] [Indexed: 06/06/2023]
Abstract
A novel chelating resin obtained via growth of PAMAM dendron on surface of styrene divinyl benzene resin beads, followed by diglycolamic acid functionalization of the dendrimer terminal. Batch experiments were conducted to study the effects of pH, nitric acid concentration, amount of adsorbent, shaking time, initial metal ion concentration and temperature on U(VI) and Th(IV) adsorption efficiency. Diglycolamic acid terminated PAMAM dendrimer functionalized styrene divinylbenzene chelating resin (DGA-PAMAM-SDB) is found to be an efficient candidate for the removal of U(VI) and Th(IV) ions from aqueous (pH >4) and nitric acid media (>3M). The sorption equilibrium could be reached within 60min, and the experimental data fits with pseudo-second-order model. Langmuir sorption isotherm model correlates well with sorption equilibrium data. The maximum U(VI) and Th(IV) sorption capacity onto DGA-PAMAMG5-SDB was estimated to be about 682 and 544.2mgg-1 respectively at 25°C. The interaction of actinides and chelating resin is reversible and hence, the resin can be regenerated and reused. DFT calculation on the interaction of U(VI) and Th(IV) ions with chelating resin validates the experimental findings.
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Affiliation(s)
| | - A K Singha Deb
- Chemical Engineering Division, Bhabha Atomic Research Centre, Mumbai, India
| | - D Ponraju
- Safffety Engineering Division, Indira Gandhi Centre for Atomic Research, Kalpakkam, India
| | - Sk Musharaf Ali
- Chemical Engineering Division, Bhabha Atomic Research Centre, Mumbai, India
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47
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Elhefnawy OA, Elabd AA. Optimization of uranyl ions removal from aqueous solution by natural and modified kaolinites. RADIOCHIM ACTA 2017. [DOI: 10.1515/ract-2016-2712] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The paper addresses the modifications of the most common mineral clay “kaolinite” for U(VI) removal from aqueous solutions. A new modified Egyptian natural kaolinite (Ca-MK) was prepared by coating kaolinite with calcium oxide. Another modification process was utilized by calcination and acid activation of kaolinite (E-MK). The Egyptian natural kaolinite (E-NK) and the two modified kaolinites were characterized by different techniques SEM, EDX, XRD, and FTIR. The removal process were investigated in batch experiments as a function of pH, contact time, initial U(VI) concentration, effect of temperature, and recovery of U(VI) were studied. The equilibrium stage was achieved after 60 min and the kinetic data was described well by pseudo-second order model. Isothermal data was better described by the Langmuir isotherm model, indicating the homogeneous removal process. Also the removal process was studied on different temperature 293, 313, and 323 K. The thermodynamic parameters ΔH°, ΔS°, and ΔG° were calculated. The thermodynamic results pointed to the endothermic and favorable nature of the U(VI) removal process in the three kaolinite adsorbents. This study indicated that (Ca-MK) has higher CEC and can be used as a new adsorbent for highly efficient removal of U(VI) from aqueous solutions.
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Affiliation(s)
- O. A. Elhefnawy
- Nuclear Safeguards and Physical Protection Department , Nuclear and Radiological Regulatory Authority (NRRA) , P.O. Box 7551 , Cairo , Egypt , Tel.: +2 01007117101, Fax: +2 2274 02 38
| | - A. A. Elabd
- Nuclear Safeguards and Physical Protection Department , Nuclear and Radiological Regulatory Authority (NRRA) , P.O. Box 7551 , Cairo , Egypt
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48
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Yen CH, Lien HL, Chung JS, Yeh HD. Adsorption of precious metals in water by dendrimer modified magnetic nanoparticles. JOURNAL OF HAZARDOUS MATERIALS 2017; 322:215-222. [PMID: 26921983 DOI: 10.1016/j.jhazmat.2016.02.029] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 01/19/2016] [Accepted: 02/11/2016] [Indexed: 06/05/2023]
Abstract
Magnetic nanoparticles modified by third-generation dendrimers (MNP-G3) and MNP-G3 further modified by ethylenediaminetetraacetic acid (EDTA) (MNP-G3-EDTA) were conducted to investigate their ability for recovery of precious metals (Pd(IV), Au(III), Pd(II) and Ag(I)) in water. Experiments were carried out using batch reactors for the studies of adsorption kinetics, adsorption isotherms, competitive adsorption and regeneration. The pseudo second-order model is the best-fit model among others suggesting that the adsorption of precious metals by MNP-G3 in water is a chemisorption process. Three adsorption isotherms namely Langmuir, Freundlich and Dubinin-Radushkevich isotherm were examined and the results showed the similarities and consistency of both linear and nonlinear analyses. Pd(IV) and Au(III) with higher valence exhibited relatively better adsorption efficiency than Pd(II) and Ag(I) with lower valence suggesting that the adsorption of precious metals by MNP-G3 is a function of valence. In the presence of the competing ion Zn(II), the adsorption efficiency of MNP-G3 for all four precious metals was declined significantly. The use of MNP-G3-EDTA revealed an increase in the adsorption efficiency for all four precious metals. However, the low selectivity of MNP-G3 towards precious metals was not enhanced by the modification of EDTA onto the MNP-G3. The regeneration of metal-laden MNP-G3 can be readily performed by using 1.0% HCl solution as a desorbent solution.
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Affiliation(s)
- Chia-Hsin Yen
- Institute of Environmental Engineering, National Chiao Tung University, 300 Hsinchu, Taiwan
| | - Hsing-Lung Lien
- Department of Civil and Environmental Engineering, National University of Kaohsiung, 811 Kaohsiung, Taiwan.
| | - Jung-Shing Chung
- Department of Civil and Environmental Engineering, National University of Kaohsiung, 811 Kaohsiung, Taiwan
| | - Hund-Der Yeh
- Institute of Environmental Engineering, National Chiao Tung University, 300 Hsinchu, Taiwan
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49
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Wang X, Li R, Liu J, Chen R, Zhang H, Liu Q, Li Z, Wang J. Melamine modified graphene hydrogels for the removal of uranium(vi) from aqueous solution. NEW J CHEM 2017. [DOI: 10.1039/c7nj01927k] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Melamine-modified graphene hydrogels (MA–GH) were successfully synthesized through a simple one-step method.
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Affiliation(s)
- Xue Wang
- Key Laboratory of Superlight Material and Surface Technology
- Ministry of Education
- Harbin Engineering University
- Harbin 150001
- China
| | - Rumin Li
- Key Laboratory of Superlight Material and Surface Technology
- Ministry of Education
- Harbin Engineering University
- Harbin 150001
- China
| | - Jingyuan Liu
- Key Laboratory of Superlight Material and Surface Technology
- Ministry of Education
- Harbin Engineering University
- Harbin 150001
- China
| | - Rongrong Chen
- Key Laboratory of Superlight Material and Surface Technology
- Ministry of Education
- Harbin Engineering University
- Harbin 150001
- China
| | - Hongsen Zhang
- Key Laboratory of Superlight Material and Surface Technology
- Ministry of Education
- Harbin Engineering University
- Harbin 150001
- China
| | - Qi Liu
- Key Laboratory of Superlight Material and Surface Technology
- Ministry of Education
- Harbin Engineering University
- Harbin 150001
- China
| | - Zhanshuang Li
- Key Laboratory of Superlight Material and Surface Technology
- Ministry of Education
- Harbin Engineering University
- Harbin 150001
- China
| | - Jun Wang
- Key Laboratory of Superlight Material and Surface Technology
- Ministry of Education
- Harbin Engineering University
- Harbin 150001
- China
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50
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Chen A, Shang C, Shao J, Zhang J, Huang H. The application of iron-based technologies in uranium remediation: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 575:1291-1306. [PMID: 27720254 DOI: 10.1016/j.scitotenv.2016.09.211] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 09/25/2016] [Accepted: 09/26/2016] [Indexed: 06/06/2023]
Abstract
Remediating uranium contamination is of worldwide interest because of the increasing release of uranium from mining and processing, nuclear power leaks, depleted uranium components in weapons production and disposal, and phosphate fertilizer in agriculture activities. Iron-based technologies are attractive because they are highly efficient, inexpensive, and readily available. This paper provides an overview of the current literature that addresses the application of iron-based technologies in the remediation of sites with elevated uranium levels. The application of iron-based materials, the current remediation technologies and mechanisms, and the effectiveness and environmental safety considerations of these approaches were discussed. Because uranium can be reduced and reoxidized in the environment, the review also proposes strategies for long-term in situ remediation of uranium. Unfortunately, iron-based materials (nanoscale zerovalent iron and iron oxides) can be toxic to microorganisms. As such, further studies exploring the links among the fates, ecological impacts, and other environmentally relevant factors are needed to better understand the constraints on using iron-based technologies for remediation.
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Affiliation(s)
- Anwei Chen
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
| | - Cui Shang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
| | - Jihai Shao
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China.
| | - Jiachao Zhang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
| | - Hongli Huang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
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