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Comparison of Adsorption Capacity and Removal Efficiency of Strontium by Six Typical Adsorption Materials. SUSTAINABILITY 2022. [DOI: 10.3390/su14137723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The rapid development and application of nuclear technology have been accompanied by the production of large amounts of radioactive wastes, of which Sr is a typical nuclide. In this study, six typical materials with strong adsorption properties, namely activated carbon, kaolin, montmorillonite, bentonite, zeolite, and attapulgite, were selected. Their adsorption mechanisms were investigated by analyzing their adsorption isotherms, adsorption kinetics, micromorphologies, element contents, specific surface areas, crystal structures, and functional groups. The results showed that the adsorption efficiency of Sr by the six adsorbents can be ranked as zeolite, bentonite, attapulgite, montmorillonite, activated carbon, and kaolin, among which the maximum adsorption capacity of zeolite was 4.07 mg/g. Based on the adsorption kinetic and thermodynamic fitting results, the adsorption of Sr by zeolites, bentonite and attapulgite is consistent with Langmuir model, the pseudo-first-order and pseudo-second-order model, and the adsorption process of Sr (II) by montmorillonite, activated carbon and kaolinite is consistent with the Freundlich model and corresponds to non-uniform adsorption. The main mechanisms of the six materials are physical adsorption, ion exchange and complexation. In summary, zeolite, bentonite, and attapulgite, especially zeolite, are highly effective for the treatment of radioactive wastewater containing strontium and have great application value in the treatment of radioactive wastes.
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2
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Kim S, Jo S, Huh TH, Kwark YJ, Lee TS. Cesium ion adsorption and desorption on electrospun mesoporous silica nanofibers immobilized with Prussian blue. CHEMOSPHERE 2022; 290:133318. [PMID: 34921861 DOI: 10.1016/j.chemosphere.2021.133318] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 11/29/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
To fabricate an efficient Cs ion adsorbent and prevent unexpected loss of Prussian blue (PB) colloidal particles during use, PB was immobilized on the surface of electrospun mesoporous silica nanofibers (MSFs) via a newly developed method of double exposure to Fe (III) ions. To introduce PB on MSFs, the MSFs were functionalized with ethylenediamine moiety to bind to Fe (III) ions, which would firmly anchor PB. MSFs were pretreated with Fe (III) ions and exposed to K4 [Fe(II) (CN)6] to form PB. We found that this process did not provide a sufficient PB amount on the MSFs. To increase the PB amount, after initial PB formation, the MSFs were treated with Fe (III) ions again so that the unreacted K4 [Fe(II) (CN)6] remaining on the MSFs could become PB. An investigation of the adsorption isotherms and kinetics of the nanofibrous adsorbent indicated that monolayer chemisorption had occurred. The maximum Cs ion adsorption capacity using the method of double exposure to Fe (III) ions was determined to be 14.66 mg/g, which was higher by a factor of 2.24 than the case that was not prepared by this method. Cs ions were selectively adsorbed over other cations and could be removed in both acidic and basic conditions, presumably because of the robust MSFs.
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Affiliation(s)
- Sihyun Kim
- Organic and Optoelectronic Materials Laboratory, Department of Applied Organic Materials Engineering, Chungnam National University, Daejeon, 34134, South Korea
| | - Seonyoung Jo
- Organic and Optoelectronic Materials Laboratory, Department of Applied Organic Materials Engineering, Chungnam National University, Daejeon, 34134, South Korea
| | - Tae-Hwan Huh
- Department of Organic Materials and Fiber Engineering, Soongsil University, Seoul, 06978, South Korea
| | - Young-Je Kwark
- Department of Organic Materials and Fiber Engineering, Soongsil University, Seoul, 06978, South Korea
| | - Taek Seung Lee
- Organic and Optoelectronic Materials Laboratory, Department of Applied Organic Materials Engineering, Chungnam National University, Daejeon, 34134, South Korea.
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3
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Falyouna O, Eljamal O, Maamoun I, Tahara A, Sugihara Y. Magnetic zeolite synthesis for efficient removal of cesium in a lab-scale continuous treatment system. J Colloid Interface Sci 2020; 571:66-79. [DOI: 10.1016/j.jcis.2020.03.028] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 03/04/2020] [Accepted: 03/08/2020] [Indexed: 11/25/2022]
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4
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Gwon YJ, Lee JJ, Lee KW, Ogden MD, Harwood LM, Lee TS. Prussian Blue Decoration on Polyacrylonitrile Nanofibers Using Polydopamine for Effective Cs Ion Removal. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06639] [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]
Affiliation(s)
- Young Jin Gwon
- Organic and Optoelectronic Materials Laboratory, Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, Korea
| | - Jeong Jun Lee
- Organic and Optoelectronic Materials Laboratory, Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, Korea
| | - Kune-Woo Lee
- Organic and Optoelectronic Materials Laboratory, Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, Korea
| | - Mark D. Ogden
- Separations and Nuclear Chemical Engineering Research, Department of Chemical and Biological Engineering, The University of Sheffield, Sheffield, S1 3JD, United Kingdom
| | - Laurence M. Harwood
- Department of Chemistry, University of Reading, Reading, RG6 6AH, United Kingdom
| | - Taek Seung Lee
- Organic and Optoelectronic Materials Laboratory, Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, Korea
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Eun S, Hong HJ, Kim H, Jeong HS, Kim S, Jung J, Ryu J. Prussian blue-embedded carboxymethyl cellulose nanofibril membranes for removing radioactive cesium from aqueous solution. Carbohydr Polym 2020; 235:115984. [PMID: 32122514 DOI: 10.1016/j.carbpol.2020.115984] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/16/2020] [Accepted: 02/10/2020] [Indexed: 02/08/2023]
Abstract
In this study, we synthesized a Prussian blue (PB)-embedded macroporous carboxymethyl cellulose nanofibril (CMCNF) membrane for facile cesium (Cs) removal. The PB was formed in situ at Fe3+ sites on a CMCNF framework cross-linked using FeCl3 as a cross-linking agent. Cubic PB particles of size 5-20 nm were observed on the macroporous CMCNF membrane surface. The PB-CMCNF membrane showed 2.5-fold greater Cs adsorption capacity (130 mg/gPB-CMCNF) than commercial PB nanoparticles, even though the PB loading of the PB-CMCNF membrane was less than 100 mg/gPB-CMCNF. The macroporous structure of the CMCNF membrane led to improved diffusion in the solution, thereby increasing the Cs adsorption capacity. The Cs adsorption behavior was systematically investigated in different solution chemistry. Finally, 137Cs removal using a semicontinuous adsorption module was demonstrated in real seawater. The results showed that the PB-CMCNF membrane is a highly effective, practical material for the removal of 137Cs from aqueous environments.
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Affiliation(s)
- Semin Eun
- School of Civil Engineering, ChungBuk National University (CBNU), Cheongju, Chungbuk, 28644, Republic of Korea.
| | - Hye-Jin Hong
- Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, 34132, Republic of Korea.
| | - Hyuncheol Kim
- Nuclear Emergency and Environmental Protection Division, Korea Atomic Energy Research Institute (KAERI), Daejeon, 34057, Republic of Korea.
| | - Hyeon Su Jeong
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), Wanju, Jeonbuk, 55324, Republic of Korea.
| | - Soonhyun Kim
- Division of Energy Technology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea.
| | - Jongwon Jung
- School of Civil Engineering, ChungBuk National University (CBNU), Cheongju, Chungbuk, 28644, Republic of Korea.
| | - Jungho Ryu
- Geologic Environment Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, 34132, Republic of Korea.
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6
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El-Din AMS, Monir T, Sayed MA. Nano-sized Prussian blue immobilized costless agro-industrial waste for the removal of cesium-137 ions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:25550-25563. [PMID: 31267400 DOI: 10.1007/s11356-019-05851-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 06/24/2019] [Indexed: 06/09/2023]
Abstract
For human health and safety, it is of great importance to develop innovative materials with a vast capacity for powerful removal of radioactive ions from aqueous solutions. Prussian blue functionalized sugarcane bagasse (PB-SCB) was successfully prepared for the efficient elimination of radioactive cesium (137Cs) using a nontoxic, environmentally friendly, and costless method. The prepared renewable material was characterized using different techniques to emphasize morphology, functional groups, crystal structure, and the adsorption process. The adsorption of Cs(I) was better fitted to the pseudo-second-order model than pseudo-first-order model which revealed a chemical adsorption mechanism. The experimental isotherm results were best illustrated by the Freundlich model (R2 = 0.98). Besides, the obtained values for the thermodynamic parameters indicating that the adsorption process was endothermic and spontaneous in nature. In addition to demonstrating high adsorption capacity for Cs ion removal (56.7 mg/g at 30 °C), PB-SCB might consider being an efficient and cost-effective adsorbent for the decontamination of cesium, where an estimated cost analysis revealed that the expenditure for the removal of 1000 mg/L cesium from alkaline radioactive wastewater is likely to be US$0.12. Graphical abstract.
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Affiliation(s)
| | - Tarek Monir
- Hot Lab. Center, Atomic Energy Authority, Cairo, 13759, Egypt
| | - Moubarak A Sayed
- Central Lab. for Elemental and Isotopic Analysis, Atomic Energy Authoritys, Cairo, 13759, Egypt
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7
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Lee I, Park CW, Yoon SS, Yang HM. Facile synthesis of copper ferrocyanide-embedded magnetic hydrogel beads for the enhanced removal of cesium from water. CHEMOSPHERE 2019; 224:776-785. [PMID: 30851529 DOI: 10.1016/j.chemosphere.2019.02.199] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 02/23/2019] [Accepted: 02/28/2019] [Indexed: 06/09/2023]
Abstract
A simple one-step approach for fabricating copper ferrocyanide-embedded magnetic hydrogel beads (CuFC-MHBs) was designed, and the beads were applied to the effective removal of cesium (Cs) and then magnetically separated from water. The polyvinyl alcohol (PVA)-coated CuFC (PVA-CuFC) was first synthesized using PVA as a stabilizer and subsequently embedded in magnetic hydrogel beads made of a cross-linked network between the PVA and magnetic iron oxide nanoparticles that was prepared through the simple dropwise addition of a mixed solution of PVA-CuFC, PVA and iron salt into an ammonium hydroxide solution. The synthesis and chemical immobilization of the PVA-CuFC in the magnetic beads were simple, facile and achieved in one pot, and the process is scalable and convenient for the large-scale treatment of Cs-contaminated water. The resulting CuFC-MHBs showed effective Cs removal performance with a high Kd value of 66,780 mL/g and excellent structural stability without the release of CuFC for at least 1 month and could be effectively separated from water by an external magnet. Moreover, the CuFC-MHBs selectively adsorbed Cs with high Kd values in the presence of various competing ions, such as in simulated groundwater (24,500 mL/g) and seawater (8290 mL/g), and maintained their Cs absorption ability in a wide pH range from 3 to 11. The convenient fabrication method and effective removal of Cs from various aqueous media demonstrated that the CuFC-MHBs have great potential for practical application in the decontamination of Cs-contaminated water sources caused by nuclear accidents and radioactive liquid waste in various nuclear industry fields.
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Affiliation(s)
- Inae Lee
- Decommissioning Technology Research Division, Korea Atomic Energy Research Institute, 989-111 Daedukdaero, Yuseong, Daejeon, 34057, South Korea; Dept. of Chemistry, Sungkyunkwan University, Suwon, Kyeonggi-do, South Korea
| | - Chan Woo Park
- Decommissioning Technology Research Division, Korea Atomic Energy Research Institute, 989-111 Daedukdaero, Yuseong, Daejeon, 34057, South Korea
| | - Seung Soo Yoon
- Dept. of Chemistry, Sungkyunkwan University, Suwon, Kyeonggi-do, South Korea.
| | - Hee-Man Yang
- Decommissioning Technology Research Division, Korea Atomic Energy Research Institute, 989-111 Daedukdaero, Yuseong, Daejeon, 34057, South Korea.
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Külahcı F, Bilici A. Advances on identification and animated simulations of radioactivity risk levels after Fukushima Nuclear Power Plant accident (with a data bank): A Critical Review. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06559-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Roh H, Kim Y, Kim YK, Harbottle D, Lee JW. Amino-functionalized magnetic chitosan beads to enhance immobilization of potassium copper hexacyanoferrate for selective Cs+ removal and facile recovery. RSC Adv 2019; 9:1106-1114. [PMID: 35517610 PMCID: PMC9059498 DOI: 10.1039/c8ra09386e] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 12/20/2018] [Indexed: 11/22/2022] Open
Abstract
Potassium copper hexacyanoferrate (KCuHCF)-incorporated magnetic chitosan beads (HMC) were synthesized for both selective Cs+ removal in aqueous solutions and facile recovery of the spent adsorbent. To disperse and immobilize large amounts of the KCuHCF, methyl acrylate and diethylenetriamine were sequentially grafted onto the one-step synthesized magnetic chitosan beads. The additional introduction of amino functionality led to the enriched Cu2+ ions on the bead surface to incorporate KCuHCF into the grafting matrix. Consequently, the HMC exhibited a high Cs+ capacity calculated to be 136.47 mg g−1 from the Langmuir model, and the equilibrium was established within 4 h. Moreover, the HMC exhibited excellent stability in a wide pH range from 4 to 11 and an outstanding Cs+ selectivity (>97%) in seawater (1.11 mg L−1 Cs+). From a practical point of view, the HMC was stable during five successive adsorption cycles and easily recovered by magnets, enabling continuous operation to decontaminate a large volume of wastewater. The magnetic chitosan beads were amino-functionalized by grafting and showed an outstanding removal performance for radioactive Cs+.![]()
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Affiliation(s)
- Hyelin Roh
- Department of Chemical and Biomolecular Engineering
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 305-701
- Republic of Korea
| | - Yonghwan Kim
- Department of Chemical and Biomolecular Engineering
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 305-701
- Republic of Korea
| | - Yun Kon Kim
- Department of Chemical and Biomolecular Engineering
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 305-701
- Republic of Korea
| | - David Harbottle
- School of Chemical and Process Engineering
- University of Leeds
- Leeds LS2 9JT
- UK
| | - Jae W. Lee
- Department of Chemical and Biomolecular Engineering
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 305-701
- Republic of Korea
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10
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Cervone G, Hultquist C. Calibration of Safecast dose rate measurements. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2018; 190-191:51-65. [PMID: 29753145 DOI: 10.1016/j.jenvrad.2018.04.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 04/18/2018] [Accepted: 04/19/2018] [Indexed: 06/08/2023]
Abstract
A methodology is presented to calibrate contributed Safecast dose rate measurements acquired between 2011 and 2016 in the Fukushima prefecture of Japan. The Safecast data are calibrated using observations acquired by the U.S. Department of Energy at the time of the 2011 Fukushima Daiichi power plant nuclear accident. The methodology performs a series of interpolations between the U.S. government and contributed datasets at specific temporal windows and at corresponding spatial locations. The coefficients found for all the different temporal windows are aggregated and interpolated using quadratic regressions to generate a time dependent calibration function. Normal background radiation, decay rates, and missing values are taken into account during the analysis. Results show that the standard Safecast static transformation function overestimates the official measurements because it fails to capture the presence of two different Cesium isotopes and their changing magnitudes with time. A model is created to predict the ratio of the isotopes from the time of the accident through 2020. The proposed time dependent calibration takes into account this Cesium isotopes ratio, and it is shown to reduce the error between U.S. government and contributed data. The proposed calibration is needed through 2020, after which date the errors introduced by ignoring the presence of different isotopes will become negligible.
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Affiliation(s)
- Guido Cervone
- Geoinformatics and Earth Observation Laboratory, Dept. of Geography and Institute for CyberScience, The Pennsylvania State University, University Park, PA, United States; Research Application Laboratory, National Center for Atmospheric Research, Boulder, CO, United States.
| | - Carolynne Hultquist
- Geoinformatics and Earth Observation Laboratory, Dept. of Geography and Institute for CyberScience, The Pennsylvania State University, University Park, PA, United States.
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Eco-friendly one-pot synthesis of Prussian blue-embedded magnetic hydrogel beads for the removal of cesium from water. Sci Rep 2018; 8:11476. [PMID: 30065289 PMCID: PMC6068103 DOI: 10.1038/s41598-018-29767-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 07/18/2018] [Indexed: 11/30/2022] Open
Abstract
A simple one-step approach to fabricating Prussian blue-embedded magnetic hydrogel beads (PB-MHBs) was fabricated for the effective magnetic removal of radioactive cesium (137Cs) from water. Through the simple dropwise addition of a mixed aqueous solution of iron salts, commercial PB and polyvinyl alcohol (PVA) to an ammonium hydroxide (NH4OH) solution, the formation of hydrogel beads and the encapsulation of PB in beads were achieved in one pot through the gelation of PVA with in situ-formed iron oxide nanoparticles as the cross-linker. The obtained PB-MHBs, with 43.77 weight % of PB, were stable without releasing PB for up to 2 weeks and could be effectively separated from aqueous solutions by an external magnetic field, which is convenient for the large-scale treatment of Cs-contaminated water. Detailed Cs adsorption studies revealed that the adsorption isotherms and kinetics could be effectively described by the Langmuir isotherm model and the pseudo-second-order model, respectively. Most importantly, the PB-MHBs exhibited excellent selectivity for 137Cs in 137Cs-contaminated simulated groundwater (55 Bq/g) with a high removal efficiency (>99.5%), and the effective removal of 137Cs from real seawater by these PB-MHBs demonstrated the excellent potential of this material for practical application in the decontamination of 137Cs-contaminated seawater.
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12
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Porous hydrogel containing Prussian blue nanoparticles for effective cesium ion adsorption in aqueous media. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2017.11.034] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Yang HM, Hwang KS, Park CW, Lee KW. Sodium-copper hexacyanoferrate-functionalized magnetic nanoclusters for the highly efficient magnetic removal of radioactive caesium from seawater. WATER RESEARCH 2017; 125:81-90. [PMID: 28834769 DOI: 10.1016/j.watres.2017.08.037] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 08/08/2017] [Accepted: 08/15/2017] [Indexed: 06/07/2023]
Abstract
Sodium-copper hexacyanoferrate (NaCuHCF)-functionalized magnetic nanoadsorbents were fabricated for the highly efficient magnetic removal of radioactive caesium from seawater. The magnetic nanoclusters (MNCs), composed of many individual Fe3O4 nanoparticles, were covalently coated with polyethyleneimine (PEI) to functionalize the MNC surfaces with NaCuHCF. After simple immobilization of Cu and Na ferrocyanide on the NC surface, the resulting NaCuHCF-functionalized MNCs showed good magnetic properties and a significant adsorption capacity for Cs+ with a high content of NaCuHCF (36.04%). The adsorption kinetics and isotherms were well fit to a pseudo-second-order model and Langmuir isotherm, respectively. The sorption of 97.35% Cs by the NaCuHCF-PEI-MNCs completed in less than 5 min, and the maximum adsorption capacity of the adsorbent was 166.67 mg/g. The NaCuHCF-PEI-MNCs selectively adsorbed Cs even in the presence of various competing ions, such as Na, K, Mg, and Ca, and the Cs removal mechanism was revealed as ion exchange between Cs in solution and Na in the NaCuHCF-PEI-MNCs. In radioactive tests, our adsorbent displayed excellent removal performance in real seawater with a high removal efficiency exceeding 99.73%, a decontamination factor exceeding 372, and a high stability in water over a wide pH range from 4 to 10 with negligible leaching of Fe.
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Affiliation(s)
- Hee-Man Yang
- Decontamination & Decommissioning Research Division, Korea Atomic Energy Research Institute, 989-111 Daedukdaero, Yuseong, Daejeon, 305-353, Republic of Korea.
| | - Kyu Sun Hwang
- Decontamination & Decommissioning Research Division, Korea Atomic Energy Research Institute, 989-111 Daedukdaero, Yuseong, Daejeon, 305-353, Republic of Korea
| | - Chan Woo Park
- Decontamination & Decommissioning Research Division, Korea Atomic Energy Research Institute, 989-111 Daedukdaero, Yuseong, Daejeon, 305-353, Republic of Korea
| | - Kune-Woo Lee
- Decontamination & Decommissioning Research Division, Korea Atomic Energy Research Institute, 989-111 Daedukdaero, Yuseong, Daejeon, 305-353, Republic of Korea
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Yang HM, Hwang KS, Park CW, Lee KW. Polyvinyl alcohol-borate hydrogel containing magnetic adsorbent for surface decontamination. ANN NUCL ENERGY 2017. [DOI: 10.1016/j.anucene.2017.05.044] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Takahara S, Ikegami M, Yoneda M, Kondo H, Ishizaki A, Iijima M, Shimada Y, Matsui Y. Bioaccessibility of Fukushima-Accident-Derived Cs in Soils and the Contribution of Soil Ingestion to Radiation Doses in Children. RISK ANALYSIS : AN OFFICIAL PUBLICATION OF THE SOCIETY FOR RISK ANALYSIS 2017; 37:1256-1267. [PMID: 27689685 DOI: 10.1111/risa.12694] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 07/22/2016] [Accepted: 07/24/2016] [Indexed: 06/06/2023]
Abstract
Ingestion of contaminated soil is one potential internal exposure pathway in areas contaminated by the Fukushima Daiichi Nuclear Power Plant accident. Doses from this pathway can be overestimated if the availability of radioactive nuclides in soils for the gastrointestinal tract is not considered. The concept of bioaccessibility has been adopted to evaluate this availability based on in vitro tests. This study evaluated the bioaccessibility of radioactive cesium from soils via the physiologically-based extraction test (PBET) and the extractability of those via an extraction test with 1 mol/L of hydrochloric acid (HCl). The bioaccessibility obtained in the PBET was 5.3% ± 1%, and the extractability in the tests with HCl was 16% ± 3%. The bioaccessibility was strongly correlated with the extractability. This result indicates the possibility that the extractability in HCl can be used as a good predictor of the bioaccessibility with PBET. In addition, we assessed the doses to children from the ingestion of soil via hand-to-mouth activity based on our PBET results using a probabilistic approach considering the spatial distribution of radioactive cesium in Date City in Fukushima Prefecture and the interindividual differences in the surveyed amounts of soil ingestion in Japan. The results of this assessment indicate that even if children were to routinely ingest a large amount of soil with relatively high contamination, the radiation doses from this pathway are negligible compared with doses from external exposure owing to deposited radionuclides in Fukushima Prefecture.
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Affiliation(s)
- Shogo Takahara
- Nuclear Safety Research Center, Japan Atomic Energy Agency, Ibaraki, Japan
- Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Maiko Ikegami
- Research Reactor Institute, Kyoto University, Kyoto, Japan
| | - Minoru Yoneda
- Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Hitoshi Kondo
- Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Azusa Ishizaki
- Nuclear Safety Research Center, Japan Atomic Energy Agency, Ibaraki, Japan
| | - Masashi Iijima
- Nuclear Safety Research Center, Japan Atomic Energy Agency, Ibaraki, Japan
| | - Yoko Shimada
- Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Yasuto Matsui
- Graduate School of Engineering, Kyoto University, Kyoto, Japan
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Hwang KS, Park CW, Lee KW, Park SJ, Yang HM. Highly efficient removal of radioactive cesium by sodium-copper hexacyanoferrate-modified magnetic nanoparticles. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2016.12.052] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Zong Y, Zhang Y, Lin X, Ye D, Qiao D, Zeng S. Facile synthesis of potassium copper ferrocyanide composite particles for selective cesium removal from wastewater in the batch and continuous processes. RSC Adv 2017. [DOI: 10.1039/c7ra03111d] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A composite CMC–KCuFC particle adsorbent was fabricated in this study, based on the use of a CMC biopolymer cross-linked with Cu2+via a syringe pump device, serving as an efficient biosorbent for Cs ion removal and adsorption from wastewater.
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Affiliation(s)
- Youli Zong
- Engineering Research Center of Biomass Materials
- Ministry of Education
- Mianyang
- China
| | - Yongde Zhang
- Department of Materials Science and Engineering
- Southwest University of Science and Technology
- Mianyang
- China
- Engineering Research Center of Biomass Materials
| | - Xiaoyan Lin
- Department of Materials Science and Engineering
- Southwest University of Science and Technology
- Mianyang
- China
- Engineering Research Center of Biomass Materials
| | - Dong Ye
- Engineering Research Center of Biomass Materials
- Ministry of Education
- Mianyang
- China
| | - Dan Qiao
- Engineering Research Center of Biomass Materials
- Ministry of Education
- Mianyang
- China
| | - Shuangneng Zeng
- Engineering Research Center of Biomass Materials
- Ministry of Education
- Mianyang
- China
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Fukuda T, Hiji M, Kino Y, Abe Y, Yamashiro H, Kobayashi J, Shimizu Y, Takahashi A, Suzuki T, Chiba M, Inoue K, Kuwahara Y, Morimoto M, Katayama M, Donai K, Shinoda H, Sekine T, Fukumoto M, Isogai E. Software development for estimating the concentration of radioactive cesium in the skeletal muscles of cattle from blood samples. Anim Sci J 2015; 87:842-7. [DOI: 10.1111/asj.12490] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 04/29/2015] [Accepted: 05/17/2015] [Indexed: 11/30/2022]
Affiliation(s)
- Tomokazu Fukuda
- Graduate School of Agricultural Sciences; Tohoku University; Sendai Japan
- Tohoku Agricultural Science Center for Reconstruction; Graduate School of Agricultural Sciences, Tohoku University; Sendai Japan
| | | | - Yasushi Kino
- Department of Chemistry; Tohoku University; Sendai Japan
| | - Yasuyuki Abe
- National Research Center for Protozoa Diseases; Obihiro University of Agriculture and Veterinary Medicine; Obihiro Japan
| | | | - Jin Kobayashi
- Miyagi University, School of Food; Agricultural and Environmental Sciences; Miyagi Japan
| | | | | | | | - Mirei Chiba
- Graduate School of Dentistry; Tohoku University; Sendai Japan
| | - Kazuya Inoue
- Department of Pathology; Institute of Development, Aging and Cancer, Tohoku University; Sendai Japan
| | - Yoshikazu Kuwahara
- Department of Pathology; Institute of Development, Aging and Cancer, Tohoku University; Sendai Japan
| | - Motoko Morimoto
- Miyagi University, School of Food; Agricultural and Environmental Sciences; Miyagi Japan
| | - Masafumi Katayama
- Graduate School of Agricultural Sciences; Tohoku University; Sendai Japan
| | - Kenichiro Donai
- Graduate School of Agricultural Sciences; Tohoku University; Sendai Japan
| | - Hisashi Shinoda
- Graduate School of Dentistry; Tohoku University; Sendai Japan
| | - Tsutomu Sekine
- Center for the Advancement of Higher Education; Tohoku University; Sendai Japan
| | - Manabu Fukumoto
- Department of Pathology; Institute of Development, Aging and Cancer, Tohoku University; Sendai Japan
| | - Emiko Isogai
- Graduate School of Agricultural Sciences; Tohoku University; Sendai Japan
- Tohoku Agricultural Science Center for Reconstruction; Graduate School of Agricultural Sciences, Tohoku University; Sendai Japan
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Fukuda T, Kino Y, Abe Y, Yamashiro H, Kobayashi J, Shimizu Y, Takahashi A, Suzuki T, Chiba M, Takahashi S, Inoue K, Kuwahara Y, Morimoto M, Shinoda H, Hiji M, Sekine T, Fukumoto M, Isogai E. Cesium radioactivity in peripheral blood is linearly correlated to that in skeletal muscle: Analyses of cattle within the evacuation zone of the Fukushima Daiichi Nuclear Power Plant. Anim Sci J 2014; 86:120-4. [DOI: 10.1111/asj.12301] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Accepted: 07/02/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Tomokazu Fukuda
- Graduate School of Agricultural Sciences; Tohoku University; Sendai Miyagi Japan
| | - Yasushi Kino
- Department of Chemistry; Tohoku University; Sendai Miyagi Japan
| | - Yasuyuki Abe
- National Research Center for Protozoa Diseases; Obihiro University of Agriculture and Veterinary Medicine; Obihiro Hokkaido Japan
| | | | - Jin Kobayashi
- Miyagi University; School of Food, Agricultural and Environmental Sciences; Miyagi Japan
| | - Yoshinaka Shimizu
- Graduate School of Dentistry; Tohoku University; Sendai Miyagi Japan
| | | | - Toshihiko Suzuki
- Graduate School of Dentistry; Tohoku University; Sendai Miyagi Japan
| | - Mirei Chiba
- Graduate School of Dentistry; Tohoku University; Sendai Miyagi Japan
| | - Shintaro Takahashi
- Department of Pathology; Institute of Development, Aging and Cancer; Tohoku University; Sendai Miyagi Japan
| | - Kazuya Inoue
- Department of Pathology; Institute of Development, Aging and Cancer; Tohoku University; Sendai Miyagi Japan
| | - Yoshikazu Kuwahara
- Department of Pathology; Institute of Development, Aging and Cancer; Tohoku University; Sendai Miyagi Japan
| | - Motoko Morimoto
- Miyagi University; School of Food, Agricultural and Environmental Sciences; Miyagi Japan
| | - Hisashi Shinoda
- Graduate School of Dentistry; Tohoku University; Sendai Miyagi Japan
| | - Masahiro Hiji
- Hitachi Solutions East Japan, Ltd; Sendai Miyagi Japan
| | - Tsutomu Sekine
- Center for the Advancement of Higher Education; Tohoku University; Sendai Miyagi Japan
| | - Manabu Fukumoto
- Department of Pathology; Institute of Development, Aging and Cancer; Tohoku University; Sendai Miyagi Japan
| | - Emiko Isogai
- Graduate School of Agricultural Sciences; Tohoku University; Sendai Miyagi Japan
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Yamashiro H, Abe Y, Fukuda T, Kino Y, Kawaguchi I, Kuwahara Y, Fukumoto M, Takahashi S, Suzuki M, Kobayashi J, Uematsu E, Tong B, Yamada T, Yoshida S, Sato E, Shinoda H, Sekine T, Isogai E, Fukumoto M. Effects of radioactive caesium on bull testes after the Fukushima nuclear plant accident. Sci Rep 2013; 3:2850. [PMID: 24100305 PMCID: PMC3792411 DOI: 10.1038/srep02850] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Accepted: 09/04/2013] [Indexed: 11/18/2022] Open
Abstract
We aimed to investigate the effect of chronic radiation exposure associated with the Fukushima Daiichi Nuclear Plant accident on the testis from 2 bulls. Estimated dose of internal exposure in one bull was 0.7-1.2 mGy (¹³⁴Cs) and 0.4-0.6 mGy (¹³⁷Cs) and external exposure was 2.0 mGy (¹³⁴Cs) and 0.8 mGy (¹³⁷Cs) (196 days). Internal dose in the other was 3.2-6.1 mGy (¹³⁴Cs) and 1.8-3.4 mGy (¹³⁷Cs) and external dose was 1.3 mGy (¹³⁴Cs) and 0.6 mGy (¹³⁷Cs) (315 days). Sperm morphology and spermatogenesis were within normal ranges. ¹³⁴,¹³⁷Cs radioactivity was detected but Cs was not detectable in the testis by electron probe microanalysis. Thus, adverse radiation-induced effects were not observed in bull testes following chronic exposure to the above levels of radiation for up to 10 months. Since we could analyse a limited number of testes, further investigation on the effects of ionizing radiation on spermatogenesis should be extended to more animals.
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Affiliation(s)
| | - Yasuyuki Abe
- Graduate School of Science and Engineering, Yamagata University, Yamagata, Japan
| | - Tomokazu Fukuda
- Graduate School of Agricultural Sciences, Tohoku University, Sendai, Japan
| | - Yasushi Kino
- Department of Chemistry, Tohoku University, Sendai, Japan
| | - Isao Kawaguchi
- National Institute of Radiological Sciences, Chiba, Japan
| | - Yoshikazu Kuwahara
- Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Motoi Fukumoto
- Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Shintaro Takahashi
- Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Masatoshi Suzuki
- Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Jin Kobayashi
- School of Food, Agricultural and Environmental Sciences, Miyagi University, Sendai, Japan
| | - Emi Uematsu
- Faculty of Agriculture, Niigata University, Niigata, Japan
| | - Bin Tong
- Faculty of Agriculture, Niigata University, Niigata, Japan
| | | | | | - Eimei Sato
- Graduate School of Agricultural Sciences, Tohoku University, Sendai, Japan
| | - Hisashi Shinoda
- Graduate School of Dentistry, Tohoku University, Sendai, Japan
| | - Tsutomu Sekine
- Department of Chemistry, Tohoku University, Sendai, Japan
| | - Emiko Isogai
- Graduate School of Agricultural Sciences, Tohoku University, Sendai, Japan
| | - Manabu Fukumoto
- Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
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Fukuda T, Kino Y, Abe Y, Yamashiro H, Kuwahara Y, Nihei H, Sano Y, Irisawa A, Shimura T, Fukumoto M, Shinoda H, Obata Y, Saigusa S, Sekine T, Isogai E, Fukumoto M. Distribution of artificial radionuclides in abandoned cattle in the evacuation zone of the Fukushima Daiichi nuclear power plant. PLoS One 2013; 8:e54312. [PMID: 23372703 PMCID: PMC3553152 DOI: 10.1371/journal.pone.0054312] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2012] [Accepted: 12/11/2012] [Indexed: 11/18/2022] Open
Abstract
The Fukushima Daiichi Nuclear Power Plant (FNPP) accident released large amounts of radioactive substances into the environment. In order to provide basic information for biokinetics of radionuclides and for dose assessment of internal exposure brought by the FNPP accident, we determined the activity concentration of radionuclides in the organs of 79 cattle within a 20-km radius around the FNPP. In all the specimens examined, deposition of Cesium-134 (134Cs, half-life: 2.065 y) and 137Cs (30.07 y) was observed. Furthermore, organ-specific deposition of radionuclides with relatively short half-lives was detected, such as silver-110m (110mAg, 249.8 d) in the liver and tellurium-129m (129mTe, 33.6 d) in the kidney. Regression analysis showed a linear correlation between the radiocesium activity concentration in whole peripheral blood (PB) and that in each organ. The resulting slopes were organ dependent with the maximum value of 21.3 being obtained for skeletal muscles (R2 = 0.83, standard error (SE) = 0.76). Thus, the activity concentration of 134 Cs and 137Cs in an organ can be estimated from that in PB. The level of radioactive cesium in the organs of fetus and infants were 1.19-fold (R2 = 0.62, SE = 0.12), and 1.51-fold (R2 = 0.70, SE = 0.09) higher than that of the corresponding maternal organ, respectively. Furthermore, radiocesium activity concentration in organs was found to be dependent on the feeding conditions and the geographic location of the cattle. This study is the first to reveal the detailed systemic distribution of radionuclides in cattle attributed to the FNPP accident.
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Affiliation(s)
- Tomokazu Fukuda
- Graduate School of Agricultural Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - Yasushi Kino
- Graduate School of Science, Tohoku University, Sendai, Miyagi, Japan
| | - Yasuyuki Abe
- Graduate School of Science and Engineering, Yamagata University, Tsuruoka, Yamagata, Japan
| | | | - Yoshikazu Kuwahara
- Department of Pathology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Miyagi, Japan
| | - Hidekazu Nihei
- Graduate School of Science, Tohoku University, Sendai, Miyagi, Japan
| | - Yosuke Sano
- Graduate School of Science, Tohoku University, Sendai, Miyagi, Japan
| | - Ayumi Irisawa
- Graduate School of Science, Tohoku University, Sendai, Miyagi, Japan
| | - Tsutomu Shimura
- Department of Pathology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Miyagi, Japan
| | - Motoi Fukumoto
- Department of Pathology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Miyagi, Japan
| | - Hisashi Shinoda
- Graduate School of Dentistry, Tohoku University, Sendai, Miyagi, Japan
| | - Yuichi Obata
- RIKEN BioResource Center (BRC), Tsukuba, Ibaraki, Japan
| | - Shin Saigusa
- National Institute of Radiological Sciences, Chiba, Chiba, Japan
| | - Tsutomu Sekine
- Center for the Advancement of Higher Education, Tohoku University, Sendai, Miyagi, Japan
| | - Emiko Isogai
- Graduate School of Agricultural Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - Manabu Fukumoto
- Department of Pathology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Miyagi, Japan
- * E-mail:
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Ishigaki A, Higashi H, Sakamoto T, Shibahara S. The Great East-Japan Earthquake and Devastating Tsunami: An Update and Lessons from the Past Great Earthquakes in Japan since 1923. TOHOKU J EXP MED 2013; 229:287-99. [DOI: 10.1620/tjem.229.287] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Akemi Ishigaki
- The Tohoku Journal of Experimental Medicine, Tohoku University Medical Press
| | - Hikari Higashi
- The Tohoku Journal of Experimental Medicine, Tohoku University Medical Press
| | - Takako Sakamoto
- The Tohoku Journal of Experimental Medicine, Tohoku University Medical Press
- Department of Molecular Biology and Applied Physiology, Tohoku University School of Medicine
| | - Shigeki Shibahara
- The Tohoku Journal of Experimental Medicine, Tohoku University Medical Press
- Department of Molecular Biology and Applied Physiology, Tohoku University School of Medicine
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23
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Abstract
This commentary reviews the international radiation protection policy that resulted in the evacuation of more than 90,000 residents from areas near the Fukushima Daiichi NPS and the enormous expenditures to protect them against a hypothetical risk of cancer. The basis for the precautionary measures is shown to be invalid; the radiation level chosen for evacuation is not conservative. The actions caused unnecessary fear and suffering. An appropriate level for evacuation is recommended. Radical changes to the ICRP recommendations are long overdue.
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Bernal AJ, Dolinoy DC, Huang D, Skaar DA, Weinhouse C, Jirtle RL. Adaptive radiation-induced epigenetic alterations mitigated by antioxidants. FASEB J 2012; 27:665-71. [PMID: 23118028 DOI: 10.1096/fj.12-220350] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Humans are exposed to low-dose ionizing radiation (LDIR) from a number of environmental and medical sources. In addition to inducing genetic mutations, there is concern that LDIR may also alter the epigenome. Such heritable effects early in life can either be positively adaptive or result in the enhanced formation of diseases, including cancer, diabetes, and obesity. Herein, we show that LDIR significantly increased DNA methylation at the viable yellow agouti (A(vy)) locus in a sex-specific manner (P=0.004). Average DNA methylation was significantly increased in male offspring exposed to doses between 0.7 and 7.6 cGy, with maximum effects at 1.4 and 3.0 cGy (P<0.01). Offspring coat color was concomitantly shifted toward pseudoagouti (P<0.01). Maternal dietary antioxidant supplementation mitigated both the DNA methylation changes and coat color shift in the irradiated offspring. Thus, LDIR exposure during gestation elicits epigenetic alterations that lead to positive adaptive phenotypic changes that are negated with antioxidants, indicating they are mediated in part by oxidative stress. These findings provide evidence that in the isogenic A(vy) mouse model, epigenetic alterations resulting from LDIR play a role in radiation hormesis, bringing into question the assumption that every dose of radiation is harmful.
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Affiliation(s)
- Autumn J Bernal
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina,, USA
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Hong JY, Oh WK, Shin KY, Kwon OS, Son S, Jang J. Spatially controlled carbon sponge for targeting internalized radioactive materials in human body. Biomaterials 2012; 33:5056-66. [DOI: 10.1016/j.biomaterials.2012.03.064] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Accepted: 03/18/2012] [Indexed: 10/28/2022]
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26
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Abstract
The current radiation safety paradigm using the linear no-threshold (LNT) model is based on the premise that even the smallest amount of radiation may cause mutations increasing the risk of cancer. Autopsy studies have shown that the presence of cancer cells is not a decisive factor in the occurrence of clinical cancer. On the other hand, suppression of immune system more than doubles the cancer risk in organ transplant patients, indicating its key role in keeping occult cancers in check. Low dose radiation (LDR) elevates immune response, and so it may reduce rather than increase the risk of cancer. LNT model pays exclusive attention to DNA damage, which is not a decisive factor, and completely ignores immune system response, which is an important factor, and so is not scientifically justifiable. By not recognizing the importance of the immune system in cancer, and not exploring exercise intervention, the current paradigm may have missed an opportunity to reduce cancer deaths among atomic bomb survivors. Increased antioxidants from LDR may reduce aging-related non-cancer diseases since oxidative damage is implicated in these. A paradigm shift is warranted to reduce further casualties, reduce fear of LDR, and enable investigation of potential beneficial applications of LDR.
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