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Zhang S, Huang Q, Chen L, Zhong Y, Hu F, Wu K, Yin X, Hamza MF, Wei Y, Ning S. Phosphination of amino-modified mesoporous silica for the selective separation of strontium. JOURNAL OF HAZARDOUS MATERIALS 2024; 467:133741. [PMID: 38341887 DOI: 10.1016/j.jhazmat.2024.133741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 01/30/2024] [Accepted: 02/05/2024] [Indexed: 02/13/2024]
Abstract
Radioactive strontium (90Sr) is considered as one of the most dangerous radionuclides due to its high biochemical toxicity. For the efficient and selective separation of Sr from acidic environments, a novel functional adsorbent CEPA@SBA-15-APTES was prepared in this work through the phosphorylation of amino-modified mesoporous silica with organic content of approximately 20 wt%. CEPA@SBA-15-APTES was characterized by TEM, SEM, EDS, TG-DSC, BET, FTIR, and XPS techniques, revealing its characteristics of an ordered hexagonal lattice-like structure and rich functional groups. The experimental results demonstrated that the adsorbent exhibited good adsorption capacity for Sr over a wide acidity range (i.e., from 10-10 M to 4 M HNO3). The adsorption equilibriums of Sr by CEPA@SBA-15-APTES in 10-6 M and 3 M HNO3 solutions were reached within 30 and 5 min, respectively, and the adsorption capacities at 318 K were 112.6 and 71.8 mg/g, respectively. Furthermore, by combining the experimental and characterization results, we found that the adsorption mechanism consisted of ion exchange between Sr(II) and H+ (in P-OH) in the 10-6 M HNO3 solution and coordination between the Sr(II) and oxygen-containing (CO and P = O) functional groups in the 3 M HNO3 solution.
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Affiliation(s)
- Shichang Zhang
- Institute of Nuclear Energy Safety Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, PR China; University of Science and Technology of China, Hefei 230026, PR China
| | - Qunying Huang
- Institute of Nuclear Energy Safety Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, PR China; University of Science and Technology of China, Hefei 230026, PR China.
| | - Lifeng Chen
- School of Nuclear Science and Technology, University of South China, Hengyang 421001, PR China
| | - Yilai Zhong
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, PR China
| | - Fengtao Hu
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, PR China
| | - Kun Wu
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, PR China
| | - Xiangbiao Yin
- School of Nuclear Science and Technology, University of South China, Hengyang 421001, PR China
| | - Mohammed F Hamza
- School of Nuclear Science and Technology, University of South China, Hengyang 421001, PR China
| | - Yuezhou Wei
- School of Nuclear Science and Technology, University of South China, Hengyang 421001, PR China; School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Shunyan Ning
- School of Nuclear Science and Technology, University of South China, Hengyang 421001, PR China.
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2
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Lu X, Liu Z, Wang W, Wang X, Ma H, Cao M. Synthesis and Evaluation of Peptide-Manganese Dioxide Nanocomposites as Adsorbents for the Removal of Strontium Ions. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 14:52. [PMID: 38202507 PMCID: PMC10780728 DOI: 10.3390/nano14010052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 12/19/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024]
Abstract
In this study, a novel organic-inorganic hybrid material IIGK@MnO2 (2-naphthalenemethyl-isoleucine-isoleucine-glycine-lysine@manganese dioxide) was designed as a novel adsorbent for the removal of strontium ions (Sr2+). The morphology and structure of IIGK@MnO2 were characterized using TEM, AFM, XRD, and XPS. The results indicate that the large specific surface area and abundant negative surface charges of IIGK@MnO2 make its surface rich in active adsorption sites for Sr2+ adsorption. As expected, IIGK@MnO2 exhibited excellent adsorbing performance for Sr2+. According to the adsorption results, the interaction between Sr2+ and IIGK@MnO2 can be fitted with the Langmuir isotherm and pseudo-second-order equation. Moreover, leaching and desorption experiments were conducted to assess the recycling capacity, demonstrating significant reusability of IIGK@MnO2.
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Affiliation(s)
- Xingjie Lu
- State Key Laboratory of Heavy Oil Processing, Department of Biological and Energy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China; (X.L.); (Z.L.); (X.W.)
- Department of Radiochemistry, China Institute of Atomic Energy, Beijing 102413, China;
| | - Zhen Liu
- State Key Laboratory of Heavy Oil Processing, Department of Biological and Energy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China; (X.L.); (Z.L.); (X.W.)
| | - Wentao Wang
- Department of Radiochemistry, China Institute of Atomic Energy, Beijing 102413, China;
| | - Xin Wang
- State Key Laboratory of Heavy Oil Processing, Department of Biological and Energy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China; (X.L.); (Z.L.); (X.W.)
| | - Hongchao Ma
- State Key Laboratory of Heavy Oil Processing, Department of Biological and Energy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China; (X.L.); (Z.L.); (X.W.)
| | - Meiwen Cao
- State Key Laboratory of Heavy Oil Processing, Department of Biological and Energy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China; (X.L.); (Z.L.); (X.W.)
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3
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Mironyuk I, Kaglyan A, Vasylyeva H, Mykytyn I, Gudkov D, Turovska L. Investigation of the chemical and radiation stability of titanium dioxide with surface arsenate groups during 90Sr adsorption. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2022; 251-252:106974. [PMID: 35961101 DOI: 10.1016/j.jenvrad.2022.106974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 07/23/2022] [Accepted: 07/24/2022] [Indexed: 06/15/2023]
Abstract
The chemical and radiation stability of titanium dioxide with surface arsenate groups during 90Sr adsorption has been studied. The oxalate technique has been used to obtain a solution containing 90Sr from the objects of the aquatic environment of the Chornobyl Exclusion Zone. The dependence of the strontium adsorption on the acidity of the solution and the initial activity of the solution (Bq per mL) has been shown. SEM, XRF, and EDS spectroscopy confirm the chemical resistance of 4As-TiO2 during regeneration. According to the study with 90Sr, the decrease in the adsorption capacity of 4As-TiO2 during regeneration is associated with incomplete leaching of strontium from 4As-TiO2 micropores. Using an electron accelerator, the radiation resistance of titanium dioxide with surface arsenate groups to β- -particles with an energy of 1 MeV has been studied. The invariability of the elemental composition and adsorption properties of 4As-TiO2 at irradiation doses of 5·107Sv testifies to the high radiation resistance of 4As-TiO2. The result obtained indicates the promise of 4As-TiO2 for improving radiochemical methods.
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Affiliation(s)
- I Mironyuk
- Department of Chemistry, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine.
| | - A Kaglyan
- Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kyiv, Ukraine.
| | - H Vasylyeva
- Uzhhorod National University, Uzhhorod, Ukraine.
| | - I Mykytyn
- Department of Chemistry, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine.
| | - D Gudkov
- Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kyiv, Ukraine.
| | - L Turovska
- Department of Medical Informatics, Medical and Biological Physics, Ivano-Frankivsk National Medical University, Ivano-Frankivsk, Ukraine.
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Shen Z, Yan G, Chen G, Cao L, Tang X, Sun Y, Liu J, Yang S, Lin L, Zeng X. Preparation and strontium adsorption behaviors of a new sodium manganese silicate material. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120824] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Palamarchuk M, Egorin A, Golikov A, Trukhin I, Bratskaya S. Hydrothermal oxidation of pre-dissolved resorcinol-formaldehyde resins as a new approach to safe processing of spent cesium-selective organic ion-exchangers. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125880. [PMID: 34492820 DOI: 10.1016/j.jhazmat.2021.125880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 04/08/2021] [Accepted: 04/09/2021] [Indexed: 06/13/2023]
Abstract
Here we report a new approach to predisposal processing of spent resorcinol-formaldehyde resins (RFR) selective to cesium radionuclides via dissolution and hydrothermal oxidation (HTO) with the mineralization efficiency above 85%. Using a combination of potentiometric and colloid titration, we have shown that dissolution of RFR by consecutive treatment with nitric acid and sodium hydroxide solutions at optimal concentrations of 3-5 mol/L and 1 mol/L, respectively, yields colloid solutions of partially depolymerized and oxidized RFR. The efficiency of HTO of resorcinol and RFR solutions with hydrogen peroxide was investigated in a flow-type stainless steel reactor in the temperature range 165-250 °С and at linear flow rates of 1-3 cm/min. It was demonstrated that HTO allowed efficient resorcinol mineralization using hydrogen peroxide at H2O2: resorcinol molar ratios above 10 at 195 °С and a linear flow rate of 2 cm/min. Due to the colloidal nature of organics in RFR solution, its efficient decomposition occurred at higher temperature or molar excess of the oxidizer as compared to resorcinol, but in both cases HTO was the most efficient in acidic media yielding acetic acid as the main oxidation resistant product.
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Affiliation(s)
- Marina Palamarchuk
- Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, 159, Prosp. 100-letya Vladivostoka, Vladivostok 690022, Russia.
| | - Andrey Egorin
- Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, 159, Prosp. 100-letya Vladivostoka, Vladivostok 690022, Russia
| | - Alexey Golikov
- Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, 159, Prosp. 100-letya Vladivostoka, Vladivostok 690022, Russia
| | - Ivan Trukhin
- Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, 159, Prosp. 100-letya Vladivostoka, Vladivostok 690022, Russia
| | - Svetlana Bratskaya
- Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, 159, Prosp. 100-letya Vladivostoka, Vladivostok 690022, Russia
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7
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Li J, Jin J, Zou Y, Sun H, Zeng X, Huang X, Feng M, Kanatzidis MG. Efficient Removal of Cs + and Sr 2+ Ions by Granulous (Me 2NH 2) 4/3(Me 3NH) 2/3Sn 3S 7·1.25H 2O/Polyacrylonitrile Composite. ACS APPLIED MATERIALS & INTERFACES 2021; 13:13434-13442. [PMID: 33705090 DOI: 10.1021/acsami.1c01983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The need to effectively and selectively remove radioactive 137Cs and 90Sr from nuclear waste solutions persists to mitigate their environmental mobility and high radiotoxicity. Because it is difficult to effectively remove them from acidic environments that degrade most sorbents, new sorbent materials are highly desirable. Here, efficient removal of Cs+ and Sr2+ is achieved by the composite of layered tin sulfide (Me2NH2)4/3(Me3NH)2/3Sn3S7·1.25H2O (FJSM-SnS) and polyacrylonitrile (PAN) (FJSM-SnS/PAN). The granulous composite possesses regular particle morphology and good mechanical strength as an engineered form. It shows excellent acid-base and γ-irradiation resistance, high maximum adsorption capacities (qm) of 296.12 and 62.88 mg/g for Cs+ and Sr2+ ions, respectively, and high selectivity even in the presence of excess Na+ ions or using lake water. Impressively, qmCs of FJSM-SnS/PAN reaches 89.29 mg/g under even acidic conditions (pH = 2.5). The column loaded with FJSM-SnS/PAN granules exhibits high removal rates (R) toward low-concentration Cs+ and Sr2+ ions under both neutral and acidic conditions. Moreover, the composite can be recycled and reused with high RCs and RSr. This work highlights the great potential of metal sulfide ion-exchangers in engineered form for the efficient removal of Cs+ or Sr2+ ions, especially under acidic conditions, for radionuclide remediation.
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Affiliation(s)
- Jilong Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P.R. China
| | - Jiance Jin
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Yanmin Zou
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
| | - Haiyan Sun
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Xi Zeng
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Xiaoying Huang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Meiling Feng
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Mercouri G Kanatzidis
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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Liu X, Wang J. Electro-adsorption characteristics and mechanism of Sr2+ ions by capacitive deionization and CFD analysis study. PROGRESS IN NUCLEAR ENERGY 2021. [DOI: 10.1016/j.pnucene.2020.103628] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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9
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Ding B, Wang Z, Wang X, Yang W, Wang S, Li C, Dai H, Tao S. Sr2+ adsorbents produced by microfluidics. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.126072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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10
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Liu X, Wang J. Adsorptive removal of Sr 2+ and Cs + from aqueous solution by capacitive deionization. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:3182-3195. [PMID: 32902750 DOI: 10.1007/s11356-020-10691-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 08/31/2020] [Indexed: 06/11/2023]
Abstract
The electro-assisted adsorptive removal of Sr2+ and Cs+ ions from aqueous solution by capacitive deionization (CDI) was studied using activated carbon cloth (ACC) as electrode. Various influencing factors, including initial concentration and the applied voltage, on the removal efficiency of Sr2+ and Cs+ were examined. The results showed that ACC electrode had a large amount of oxygen- and nitrogen-containing functional groups. The removal efficiency of Sr2+ and Cs+ was 40.58% and 62.05%, respectively, which decreased when their initial concentration increased from 3 to 20 mg L-1. The removal efficiency of Sr2+ and Cs+ increased by 26.64% and 17.84% with increase of the applied voltage. CDI process is favorable to remove high valence ions due to the ion-exchange and charge interaction mechanisms. The mixed-order (MO) model could fit the adsorption kinetics of Sr2+ and Cs+ (R2 = 0.938). The Redlich-Peterson isotherm could be used for Sr2+ and Cs+ adsorption. After adsorption, Sr and Cs partly deposited on the surface of the ACC, which did not change the surface structure of the ACC electrode.
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Affiliation(s)
- Xiaojing Liu
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Jianlong Wang
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing, 100084, People's Republic of China.
- Beijing Key Laboratory of Radioactive Waste Treatment, INET, Tsinghua University, Beijing, 100084, People's Republic of China.
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11
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Soonthornwiphat N, Kobayashi Y, Toda K, Kuroda K, Islam CR, Otake T, Elakneswaran Y, Provis JL, Sato T. Encapsulation of Sr-loaded titanate spent adsorbents in potassium aluminosilicate geopolymer. J NUCL SCI TECHNOL 2020. [DOI: 10.1080/00223131.2020.1775717] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
| | - Yutaro Kobayashi
- Graduate School of Engineering, Hokkaido University, Sapporo, Japan
| | - Kanako Toda
- Graduate School of Engineering, Hokkaido University, Sapporo, Japan
| | - Kazuma Kuroda
- Graduate School of Engineering, Hokkaido University, Sapporo, Japan
| | | | - Tsubasa Otake
- Faculty of Engineering, Hokkaido University, Sapporo, Japan
| | | | - John L. Provis
- Department of Materials Science and Engineering, The University of Sheffield, Sheffield, UK
| | - Tsutomu Sato
- Faculty of Engineering, Hokkaido University, Sapporo, Japan
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12
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Amesh P, Suneesh A, Venkatesan K, Uma Maheswari R, Vijayalakshmi S. Preparation and ion exchange studies of cesium and strontium on sodium iron titanate. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116393] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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13
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Ke X, Bernal SA, Sato T, Provis JL. Alkali aluminosilicate geopolymers as binders to encapsulate strontium-selective titanate ion-exchangers. Dalton Trans 2019; 48:12116-12126. [PMID: 31328757 DOI: 10.1039/c9dt02108f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Alkali-activated metakaolin geopolymers are attracting interest in the conditioning of nuclear wastes, especially for their ability to immobilise cationic species. However, there is limited understanding of the chemical interactions between the encapsulated spent ion-exchangers, used for decontaminating waste water, and the host aluminosilicate matrix. The lack of such understanding makes it difficult to predict the long-term stability of the waste form. In this study, the suitability of using metakaolin based geopolymer as a matrix for encapsulation of titanate-type ion-exchangers loaded with non-radioactive Sr was investigated for the first time, via spectroscopic and microstructural inspection of the encapsulated ion-exchangers and the aluminosilicate gel matrix. The microstructural and chemical properties of metakaolin geopolymers remained stable after encapsulating titanate type spent ion-exchangers, performed desirably as host materials for conditioning of Sr-loaded titanate ion-exchangers.
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Affiliation(s)
- Xinyuan Ke
- Department of Materials Science & Engineering, The University of Sheffield, Sheffield S1 3JD, UK.
| | - Susan A Bernal
- Department of Materials Science & Engineering, The University of Sheffield, Sheffield S1 3JD, UK.
| | - Tsutomu Sato
- Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-0808, Japan
| | - John L Provis
- Department of Materials Science & Engineering, The University of Sheffield, Sheffield S1 3JD, UK.
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Villard A, Toquer G, Siboulet B, Trens P, Grandjean A, Dufrêche JF. Sorption pH dependance of strontium/calcium by sodium nonatitanate. CHEMOSPHERE 2018; 202:33-39. [PMID: 29554505 DOI: 10.1016/j.chemosphere.2018.02.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 01/22/2018] [Accepted: 02/04/2018] [Indexed: 06/08/2023]
Abstract
Sodium nonatitanate powder is a layered material containing some potential exchangeable sodium ions between layers. In this work, sorption mechanism of this material has been studied and modeled at the solid-liquid interface. In particular, the ion-exchange mechanism is up to now not entirely known and especially the role of the pH on sorption properties. To investigate this latter, the solid is first equilibrated with inert acidic and base (nitric acid and triethylamine) for which the co-ions nitrate and triethylammonium do not penetrate the solid. The exchange between proton or divalent ions (strontium or calcium), and the sodium initially located in the sodium nonatitanate, is characterized through capillary ionic chromatography and conductivity experiments. To understand and explain the sorption properties, we modeled the equilibrium constant of different exchange reactions as a function of the solution pH. The equilibrium constants of the strontium/sodium and the calcium/sodium exchange have been obtained. We have shown the important role of the pH on the sorption rate of the strontium and moreover the hydrolysis rate of the sodium nonatitanate is calculated. We found that one eighth of sodium is spontaneously hydrolysed in aqueous phase whereas seven-eighths are exchanged by different divalent cations (strontium or calcium). Strontium and calcium exhibit similar exchange curves and competition with the proton adsorbed is modeled with global equilibrium constant. The prediction is in agreement with the conductivity experiments and the global extraction isotherms.
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Affiliation(s)
- Arnaud Villard
- Institut de Chimie Séparative de Marcoule, UMR 5257, CEA, CNRS, ENSCM, Univ Montpellier, Marcoule, France.
| | - Guillaume Toquer
- Institut de Chimie Séparative de Marcoule, UMR 5257, CEA, CNRS, ENSCM, Univ Montpellier, Marcoule, France.
| | - Bertrand Siboulet
- Institut de Chimie Séparative de Marcoule, UMR 5257, CEA, CNRS, ENSCM, Univ Montpellier, Marcoule, France
| | - Philippe Trens
- Institut Charles Gerhardt, UMR 5253, ENSCM, CNRS, Univ Montpellier, Montpellier, France
| | - Agnès Grandjean
- Institut de Chimie Séparative de Marcoule, UMR 5257, CEA, CNRS, ENSCM, Univ Montpellier, Marcoule, France
| | - Jean-François Dufrêche
- Institut de Chimie Séparative de Marcoule, UMR 5257, CEA, CNRS, ENSCM, Univ Montpellier, Marcoule, France
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16
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Enhanced adsorption of radioactive strontium ions from aqueous solution by H2O2-modified attapulgite. J Radioanal Nucl Chem 2017. [DOI: 10.1007/s10967-017-5184-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Hong HJ, Jeong HS, Kim BG, Hong J, Park IS, Ryu T, Chung KS, Kim H, Ryu J. Highly stable and magnetically separable alginate/Fe 3O 4 composite for the removal of strontium (Sr) from seawater. CHEMOSPHERE 2016; 165:231-238. [PMID: 27657815 DOI: 10.1016/j.chemosphere.2016.09.034] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 07/15/2016] [Accepted: 09/10/2016] [Indexed: 06/06/2023]
Abstract
In this study, a highly stable alginate/Fe3O4 composite was synthesized, and systematically investigated for the practical application of strontium (Sr) removal in complex media, such as seawater and radioactive wastewater. To overcome the drawbacks of the use of alginate microspheres, high contents of alginic acid and Fe3O4 were used to provide a more rigid structure with little swelling and facile separation, respectively. The synthesized composite was optimized for particle sizes of <400 μm and 1% content of Fe3O4. The alginate/Fe3O4 composite showed excellent Sr uptake (≈400.0 mg/g) and exhibited outstanding selectivity for Sr among various cations (Na, Mg, Ca and K). However, in diluted Sr condition (50 mg/L), Ca significantly affected Sr adsorption, resulting in a decrease of Kd value from 3.7 to 2.4 at the 0.01 M Ca. The alginate/Fe3O4 composite could be completely regenerated using 0.1 M HCl and CaCl2. In real seawater spiked with 50 mg/L of Sr, the alginate/Fe3O4 composite showed 12.5 mg/g of Sr uptake, despite the highly concentrated ions in seawater. The adsorption experiment for radio-active 90Sr revealed a removal efficiency of 67% in real seawater, demonstrating the reliability of the alginate/Fe3O4 composite.
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Affiliation(s)
- Hye-Jin Hong
- Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Republic of Korea
| | - Hyeon Su Jeong
- Applied Quantum Composite Research Center, Korea Institute of Science and Technology (KIST), Eunha-ri San 101, Bongdong-eup, Wanju-gun, Jeollabuk-do 565-905, Republic of Korea
| | - Byoung-Gyu Kim
- Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Republic of Korea
| | - Jeongsik Hong
- Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Republic of Korea
| | - In-Su Park
- Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Republic of Korea
| | - Taegong Ryu
- Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Republic of Korea
| | - Kang-Sup Chung
- Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Republic of Korea
| | - Hyuncheol Kim
- Environmental Radioactivity Assessment Team, Korea Atomic Energy Research Institute (KAERI), Daejeon 34057, Republic of Korea
| | - Jungho Ryu
- Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Republic of Korea.
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Li W, Yao W, Zhu W, Xi C, Duan T. In situ preparation of mycelium/bayberry tannin for the removal of strontium from aqueous solution. J Radioanal Nucl Chem 2016. [DOI: 10.1007/s10967-016-4808-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Duvail M, Villard A, Nguyen TN, Dufrêche JF. Thermodynamics of Associated Electrolytes in Water: Molecular Dynamics Simulations of Sulfate Solutions. J Phys Chem B 2015; 119:11184-95. [DOI: 10.1021/acs.jpcb.5b03088] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Magali Duvail
- Institut de Chimie Séparative
de Marcoule (ICSM), UMR 5257, CEA-CNRS-Université Montpellier-ENSCM, Site
de Marcoule, Bâtiment 426, BP 17171, F-30207 Bagnols-sur-Cèze Cedex, France
| | - Arnaud Villard
- Institut de Chimie Séparative
de Marcoule (ICSM), UMR 5257, CEA-CNRS-Université Montpellier-ENSCM, Site
de Marcoule, Bâtiment 426, BP 17171, F-30207 Bagnols-sur-Cèze Cedex, France
| | - Thanh-Nghi Nguyen
- Institut de Chimie Séparative
de Marcoule (ICSM), UMR 5257, CEA-CNRS-Université Montpellier-ENSCM, Site
de Marcoule, Bâtiment 426, BP 17171, F-30207 Bagnols-sur-Cèze Cedex, France
| | - Jean-François Dufrêche
- Institut de Chimie Séparative
de Marcoule (ICSM), UMR 5257, CEA-CNRS-Université Montpellier-ENSCM, Site
de Marcoule, Bâtiment 426, BP 17171, F-30207 Bagnols-sur-Cèze Cedex, France
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