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Yamaguchi A, Kurihara Y, Nagata K, Tanaka K, Higaki S, Kobayashi T, Tanida H, Ohara Y, Yokoyama K, Yaita T, Yoshimura T, Okumura M, Takahashi Y. Molecular geochemistry of radium: A key to understanding cation adsorption reaction on clay minerals. J Colloid Interface Sci 2024; 661:317-332. [PMID: 38301469 DOI: 10.1016/j.jcis.2024.01.120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 12/26/2023] [Accepted: 01/17/2024] [Indexed: 02/03/2024]
Abstract
Adsorption reactions of various cations on clay minerals have different effects on their environmental behaviors depending on the molecular-scale adsorption structure. Some cations form outer-sphere complexes via hydration, while others create inner-sphere complexes through dehydration. This preference dictates their environmental impact. However, the factors controlling these complex formations remain unclear. Furthermore, research on the adsorption preferences of radium (Ra) is lacking. Thus, this study conducted the first EXAFS study of Ra2+ adsorbed on clay minerals and showed that Ra2+ forms inner-sphere complexes on vermiculite, which can be surprising because Ra2+ is a divalent cation and prefers to be hydrated. In order to investigate the factors controlling the complex formations, this study conducted systematic EXAFS measurements and DFT calculations for alkali and alkaline earth metal cations. The results showed the importance of the size-matching effect between the adsorbed cation and the cavity of the tetrahedral sheets and that the complex formation can be estimated by the combination of the ionic radius and hydration enthalpy of the adsorbed cation. Furthermore, this study also analyzed environmental core samples. Their results showed the fixation of Ra2+ by clay minerals and the controlling factors can effectively predict cation environmental behavior.
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Affiliation(s)
- Akiko Yamaguchi
- Center for Computational Science and e-Systems, Japan Atomic Energy Agency, Kashiwa-shi, Chiba 277-0871, Japan; Advanced Science Research Center, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan; Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan; Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Yuichi Kurihara
- Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; Ningyo-toge Environmental Engineering Center, Japan Atomic Energy Agency, Kagamino-cho, Tomata-gun, Okayama 708-0698, Japan; Department of Nuclear Technology, Nagaoka University of Technology, Nagaoka-shi, Niigata 940-2188, Japan
| | - Kojiro Nagata
- Radioisotope Research Center, Institute for Radiation Sciences Osaka University, Suita-shi, Osaka 565-0871, Japan
| | - Kazuya Tanaka
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan; Ningyo-toge Environmental Engineering Center, Japan Atomic Energy Agency, Kagamino-cho, Tomata-gun, Okayama 708-0698, Japan
| | - Shogo Higaki
- Isotope Science Center, The University of Tokyo, Bunkyo-ku, Tokyo 113-0032, Japan
| | - Tohru Kobayashi
- Materials Sciences Research Center, Japan Atomic Energy Agency, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Hajime Tanida
- Materials Sciences Research Center, Japan Atomic Energy Agency, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Yoshiyuki Ohara
- Environmental Sales Department, Environment Business Department, Nihon Kaisui Co., LTD., Chiyoda-ku, Tokyo 101-0062, Japan
| | - Keiichi Yokoyama
- Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - Tsuyoshi Yaita
- Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - Takashi Yoshimura
- Radioisotope Research Center, Institute for Radiation Sciences Osaka University, Suita-shi, Osaka 565-0871, Japan
| | - Masahiko Okumura
- Center for Computational Science and e-Systems, Japan Atomic Energy Agency, Kashiwa-shi, Chiba 277-0871, Japan
| | - Yoshio Takahashi
- Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; Isotope Science Center, The University of Tokyo, Bunkyo-ku, Tokyo 113-0032, Japan
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Narita H, Maeda M, Tokoro C, Suzuki T, Tanaka M, Shiwaku H, Yaita T. Extraction of Se(iv) and Se(vi) from aqueous HCl solution by using a diamide-containing tertiary amine. RSC Adv 2023; 13:17001-17007. [PMID: 37288380 PMCID: PMC10243184 DOI: 10.1039/d3ra01341c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 05/01/2023] [Indexed: 06/09/2023] Open
Abstract
Here, we investigated the mechanism underlying the extraction of Se(iv) and Se(vi) from aqueous HCl solutions by N-2-ethylhexyl-bis(N-di-2-ethylhexyl-ethylamide)amine (EHBAA). In addition to examining extraction behavior, we also elucidated structural properties of the dominant Se species in solution. Two types of aqueous HCl solutions were prepared by dissolving a SeIV oxide or a SeVI salt. X-ray absorption near edge structure analyses revealed that Se(vi) was reduced to Se(iv) in 8 M HCl. Using 0.5 M EHBAA, ∼50% of Se(vi) was extracted from 0.5 M HCl. In contrast, Se(iv) was hardly extracted from 0.5 to 5 M HCl; however, at molar concentrations above 5 M, the extraction efficiency of Se(iv) increased drastically, reaching ∼85%. Slope analyses for the distribution ratios of Se(iv) in 8 M HCl and Se(vi) in 0.5 M HCl showed that apparent stoichiometries of Se(iv) or Se(vi) to EHBAA were 1 : 1 and 1 : 2, respectively. Extended X-ray absorption fine structure measurements revealed that the inner-sphere of the Se(iv) and Se(vi) complexes extracted with EHBAA was [SeOCl2] and [SeO4]2-, respectively. Together, these results indicate that Se(iv) is extracted from 8 M HCl with EHBAA via a solvation-type reaction, whereas Se(vi) is extracted from 0.5 M HCl via an anion-exchange-type reaction.
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Affiliation(s)
- Hirokazu Narita
- Global Zero Emission Research Center, National Institute of Advanced Industrial Science and Technology (AIST) 16-1 Onogawa Tsukuba Ibaraki 305-8569 Japan
| | - Motoki Maeda
- School of Creative Science and Engineering, Waseda University 3-4-1 Okubo Shinjuku Tokyo 169-8555 Japan
| | - Chiharu Tokoro
- School of Creative Science and Engineering, Waseda University 3-4-1 Okubo Shinjuku Tokyo 169-8555 Japan
| | - Tomoya Suzuki
- Global Zero Emission Research Center, National Institute of Advanced Industrial Science and Technology (AIST) 16-1 Onogawa Tsukuba Ibaraki 305-8569 Japan
| | - Mikiya Tanaka
- National Institute of Advanced Industrial Science and Technology (AIST) 1-1-1 Umezono Tsukuba Ibaraki 305-8560 Japan
| | - Hideaki Shiwaku
- Materials Science Research Center, Japan Atomic Energy Agency (JAEA) 1-1-1 Koto Sayo Hyogo 679-5148 Japan
| | - Tsuyoshi Yaita
- Materials Science Research Center, Japan Atomic Energy Agency (JAEA) 1-1-1 Koto Sayo Hyogo 679-5148 Japan
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Yamaguchi A, Nagata K, Kobayashi K, Tanaka K, Kobayashi T, Tanida H, Shimojo K, Sekiguchi T, Kaneta Y, Matsuda S, Yokoyama K, Yaita T, Yoshimura T, Okumura M, Takahashi Y. EXAFS spectroscopy measurements and ab initio molecular dynamics simulations reveal the hydration structure of the radium(II) ion. iScience 2022; 25:104763. [PMID: 35992079 PMCID: PMC9386089 DOI: 10.1016/j.isci.2022.104763] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 06/27/2022] [Accepted: 07/09/2022] [Indexed: 12/02/2022] Open
Abstract
Radium is refocused from the viewpoint of an environmental pollutant and cancer therapy using alpha particles, where it mainly exists as a hydrated ion. We investigated the radium hydration structure and the dynamics of water molecules by extended X-ray absorption fine structure (EXAFS) spectroscopy and ab initio molecular dynamics (AIMD) simulation. The EXAFS experiment showed that the coordination number and average distance between radium ion and the oxygen atoms in the first hydration shell are 9.2 ± 1.9 and 2.87 ± 0.06 Å, respectively. They are consistent with those obtained from the AIMD simulations, 8.4 and 2.88 Å. The AIMD simulations also revealed that the water molecules in the first hydration shell of radium are less structured and more mobile than those of barium, which is an analogous element of radium. Our results indicate that radium can be more labile than barium in terms of interactions with water. Extended X-ray absorption fine structure (EXAFS) measurement revealed the hydration structure of radium ion Ab initio molecular dynamics (AIMD) simulation brought consistent results AIMD revealed the structural and dynamic properties of the water molecules The hydration structure of radium ion is more labile than that of barium ion
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Shimojo K, Fujiwara I, Oshima T, Yokoyama K, Yaita T. Lanthanide extraction using a thiodiglycolamic acid extractant: effect of S-donor on lanthanide separation. ANAL SCI 2022; 38:1003-1006. [PMID: 35597878 DOI: 10.1007/s44211-022-00123-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 04/27/2022] [Indexed: 11/01/2022]
Abstract
Liquid-liquid extraction of lanthanide (Ln) ions was investigated using N,N-dioctylthiodiglycolamic acid (DOTDGAA), which is a sulfur donor ligand with an amide group and a carboxyl group connected by a thioether chain. The extraction performance and selectivity of DOTDGAA for Ln ions were compared with those of N,N-dioctyldiglycolamic acid (DODGAA), which is also an oxygen donor ligand with a similar chemical structure, to assess the effect of the soft/hard donor atom on Ln separation. DOTDGAA quantitatively extracted all Ln ions while being selective toward the light and middle Ln ions, in contrast to the selectivity of DODGAA for heavier Ln ions. Slope analysis demonstrated that the Ln3+ transfer using DOTDGAA proceeded through a proton-exchange reaction, forming a 1:3 complex, Ln(DOTDGAA)3. The back-extraction of Ln ions from the extracting phase was successfully achieved under acidic conditions.
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Affiliation(s)
- Kojiro Shimojo
- Materials Sciences Research Center, Japan Atomic Energy Agency (JAEA), 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo, 679-5148, Japan.
| | - Iori Fujiwara
- Materials Sciences Research Center, Japan Atomic Energy Agency (JAEA), 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo, 679-5148, Japan.,Department of Applied Chemistry, University of Miyazaki, 1-1 Gakuen Kibanadai Nishi, Miyazaki, 889-2192, Japan
| | - Tatsuya Oshima
- Department of Applied Chemistry, University of Miyazaki, 1-1 Gakuen Kibanadai Nishi, Miyazaki, 889-2192, Japan
| | - Keiichi Yokoyama
- Materials Sciences Research Center, Japan Atomic Energy Agency (JAEA), 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo, 679-5148, Japan
| | - Tsuyoshi Yaita
- Materials Sciences Research Center, Japan Atomic Energy Agency (JAEA), 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo, 679-5148, Japan
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Matsuda S, Yokoyama K, Yaita T, Kobayashi T, Kaneta Y, Simonnet M, Sekiguchi T, Honda M, Shimojo K, Doi R, Nakashima N. Marking actinides for separation: Resonance-enhanced multiphoton charge transfer in actinide complexes. Sci Adv 2022; 8:eabn1991. [PMID: 35584222 PMCID: PMC9116592 DOI: 10.1126/sciadv.abn1991] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 04/04/2022] [Indexed: 06/15/2023]
Abstract
Precise separation and purification of f-block elements are important and challenging especially for the reduction of nuclear waste and the recycling of rare metals but are practically difficult mainly because of their chemical similarity. A promising way to overcome this difficulty is controlling their oxidation state by nonchemical processes. Here, we show resonance-enhanced multiphoton charge transfer in actinide complexes, which leads to element-specific control of their oxidation states owing to the distinct electronic spectra arising from resonant transitions between f orbitals. We observed oxidation of trivalent americium in nitric acid. In addition, we found that the coordination of nitrates is essential for promoting the oxidation reaction, which is the first finding ever relevant to the primary process of photoexcitation via resonant transitions of f-block elements. The resonance-enhanced photochemical process could be used in the nuclear waste management, as it would facilitate the mutual separation of actinides, such as americium and curium.
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Affiliation(s)
- Shohei Matsuda
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
- Materials Sciences Research Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - Keiichi Yokoyama
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Tsuyoshi Yaita
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Tohru Kobayashi
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Yui Kaneta
- Materials Sciences Research Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan
| | - Marie Simonnet
- Materials Sciences Research Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - Tetsuhiro Sekiguchi
- Materials Sciences Research Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - Mitsunori Honda
- Materials Sciences Research Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - Kojiro Shimojo
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Reisuke Doi
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Nobuaki Nakashima
- Department of Chemistry, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
- Institute for Laser Technology, 1-8-4 Utsubo-honmachi, Nishi-ku, Osaka 550-0004, Japan
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Shirasaki K, Nagai M, Nakase M, Tabata C, Sunaga A, Yaita T, Yamamura T. Sr( ii) extraction by crown ether in HFC: entropy driven mechanism through H 2PFTOUD. RSC Adv 2022; 12:26922-26933. [PMID: 36275164 PMCID: PMC9490450 DOI: 10.1039/d2ra04411k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 09/12/2022] [Indexed: 11/24/2022] Open
Abstract
The solvent extraction of Sr(ii) was carried out using dicyclohexano-18-crown-6 (DCH18C6) and two HFC mixed solvents MS1 and MS2, where MS1 was composed of 30/60 (w/w)% trans-1,2-dichloroethylene/HFC-43 (HFC-43: 1,1,1,2,2,3,4,5,5,5-decafluoropentane) and MS2 was 5/95 (w/w)% heptane/HFC-43. Nitric acid and perfuruoro-3-6-9-trioxaundecane-1,11-dioic acid (H2PFTOUD) were used to study the effect of acid on the extraction. The maximum distribution ratio of Sr(ii) (DSr) observed for H2PFTOUD conditions was ∼180, and >10 times larger than aqueous nitric acid conditions. The DSr value was influenced by concentrations of the DCH18C6, Sr(ii), and acid, and by temperature. The composition of extracted complexes was estimated using slope analysis as an Sr(ii)–anion–DCH18C6 ratio of ∼1 : 2 : 1. From the extended X-ray absorption fine structure (EXAFS) measurements of Sr(ii) in the aqueous and organic phases, it is inferred that regardless of the acid used, DCH18C6 coordinates to the first coordination sphere of the Sr(ii) extracted complexes and Sr(ii) is hydrated (complexation with H2PFTOUD cannot be distinguished) in the aqueous phase. Thermodynamic data were significantly changed by choice of acid, i.e., both enthalpy and entropy values were negative for nitric acid conditions, on the other hand, entropy values were large and positive for H2PFTOUD conditions. These results have demonstrated that the combination of HFC solvent and crown ether is applicable for metal extraction. The solvent extraction of Sr(ii) was carried out using DCH18C6, and two HFC mixed solvents composed of organic solvents and HFC-43 (HFC-43: 1,1,1,2,2,3,4,5,5,5-decafluoropentane), and two acids (nitric acid and H2PFTOUD).![]()
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Affiliation(s)
- Kenji Shirasaki
- Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan
| | - Mitsuie Nagai
- Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan
| | - Masahiko Nakase
- Fukushima Reconstruction and Revitalization Unit, Institute of Innovative Research, Tokyo Institute of Technology, Tokyo 152-8550, Japan
| | - Chihiro Tabata
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, Kumatori, Osaka 590-0494, Japan
- Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai, Ibaragi 319-1195, Japan
| | - Ayaki Sunaga
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, Kumatori, Osaka 590-0494, Japan
- Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Tsuyoshi Yaita
- Materials Sciences Research Center, Japan Atomic Energy Agency, Kouto, Hyogo 679-5148, Japan
| | - Tomoo Yamamura
- Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, Kumatori, Osaka 590-0494, Japan
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Simonnet M, Kobayashi T, Shimojo K, Yokoyama K, Yaita T. Study on Phenanthroline Carboxamide for Lanthanide Separation: Influence of Amide Substituents. Inorg Chem 2021; 60:13409-13418. [PMID: 34428030 DOI: 10.1021/acs.inorgchem.1c01729] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Phenanthroline carboxamide compounds are promising for lanthanide intra-series separation. This paper presents a study on the effect of structure modification of phenanthroline carboxamides on the extraction of the whole lanthanide series. The study consists of theoretical calculations, extraction experiments of the 14 stable lanthanides, and extended X-ray absorption fine structure (EXAFS) analyses of Nd and Dy complexes. Tridentate monocarboxamides and tetradentate dicarboxamides show different trends in series extraction, although both preferentially extract the light lanthanides. The amide substituents, although not directly coordinating the metal ions, were also found to impact the distribution ratio, most probably due to a modification in the internal polarity of the molecules. This latter effect, if extrapolated to other nitrogen-based ligands such as pyridines or triazines, can be used to further fine-tune extractants for a process improvement.
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Affiliation(s)
- Marie Simonnet
- Materials Sciences Research Center, Japan Atomic Energy Agency, Shirakata 2-4, 319-1195 Tokai-Mura, Japan
| | - Tohru Kobayashi
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Kojiro Shimojo
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Keiichi Yokoyama
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Tsuyoshi Yaita
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
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Suzuki T, Otsubo U, Ogata T, Shiwaku H, Kobayashi T, Yaita T, Matsuoka M, Murayama N, Narita H. Speciation and separation of platinum(iv) polynuclear complexes in concentrated nitric acid solutions. Dalton Trans 2021; 50:11390-11397. [PMID: 34195711 DOI: 10.1039/d1dt01392k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Understanding the solution chemistry of Pt(iv) is crucial for the hydrometallurgy of precious metals. To gain such an understanding, the speciation and separation of Pt(iv) complexes in concentrated HNO3 solutions were investigated via Pt LIII edge X-ray absorption fine structure (XAFS) spectroscopy. The XAFS results for concentrated HNO3 solutions of Na2Pt(OH)6 revealed the dominant presence of Pt polynuclear complexes, wherein the formation of Pt(iv) polynuclear complexes depended on the metal concentration and the Na2Pt(OH)6 dissolution temperature. The dominant species present in a heated nitrate solution of 0.90 g-Pt L-1 and a non-heated nitrate solution of 3.2 g-Pt L-1 were dinuclear Pt(iv) complexes, whereas those in a heated solution of 3.0 g-Pt L-1 were predominantly larger polynuclear complexes, such as, tetra- and hexa-nuclear complexes. The presence of larger Pt(iv) complexes was confirmed via XAFS spectroscopy, wherein the adsorption of Pt(iv) ions from a 10 M HNO3 solution by a chelating resin functionalised with iminodiacetic acid and a strongly basic anion-exchange resin bearing trimethyl ammonium nitrate was examined. The adsorption of 50 mg L-1 of Pt(iv) by the two resins was tested using aqueous solutions diluted from heated HNO3 solutions with varying metal concentrations, and also from a non-heated solution. We found that Pt(iv) complexes from heating solutions containing high Pt(iv) concentrations displayed high adsorption percentages. In addition, the selective adsorption of Pt(iv) over Pd(ii), Ag(i), Cu(ii), Ni(ii), and Fe(iii) from a 10 M HNO3 solution was achieved using a strongly basic anion-exchange resin.
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Affiliation(s)
- Tomoya Suzuki
- Global Zero Emission Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 16-1, Onogawa, Tsukuba, Ibaraki, Japan.
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Shimojo K, Suzuki H, Yokoyama K, Yaita T, Ikeda-Ohno A. Solvent Extraction of Technetium(VII) and Rhenium(VII) Using a Hexaoctylnitrilotriacetamide Extractant. ANAL SCI 2020; 36:1435-1437. [PMID: 33191366 DOI: 10.2116/analsci.20c014] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Liquid-liquid extraction for the removal of pertechnetate (99TcO4-) and perrhenate (ReO4-) is reported based on using the tripodal extractant N,N,N',N',N″,N″-hexa-n-octylnitrilotriacetamide (HONTA) composed of three amide groups and a tertiary amine. The extraction behaviors were compared with those using alkyldiamideamines (ADAAM(Oct) and ADAAM(EH)), and the commercial amine-type extractant, trioctylamine (TOA). HONTA quantitatively extracted 99TcO4- and ReO4- in the pH range from 1.0 to 2.5 by the co-extraction of protons. The extraction performance of the extractants was improved in the order of HONTA > ADAAM(Oct) > ADAAM(EH) > TOA. 99TcO4- and ReO4- in the extracting phase were successfully stripped using neutral aqueous solutions as the receiving phase, and the extraction ability of HONTA was maintained after five repeated uses.
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Affiliation(s)
- Kojiro Shimojo
- Materials Sciences Research Center, Japan Atomic Energy Agency (JAEA).,Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
| | - Hideya Suzuki
- Nuclear Science and Engineering Center, Japan Atomic Energy Agency (JAEA)
| | - Keiichi Yokoyama
- Materials Sciences Research Center, Japan Atomic Energy Agency (JAEA)
| | - Tsuyoshi Yaita
- Materials Sciences Research Center, Japan Atomic Energy Agency (JAEA)
| | - Atsushi Ikeda-Ohno
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
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Simonnet M, Suzuki S, Miyazaki Y, Kobayashi T, Yokoyama K, Yaita T. Lanthanide Intra-series Separation by a 1,10-Phenanthroline Derivative: Counterion Effect. Solvent Extraction and Ion Exchange 2020. [DOI: 10.1080/07366299.2020.1744806] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Marie Simonnet
- Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai-mura, Japan
| | - Shinichi Suzuki
- Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai-mura, Japan
| | - Yuji Miyazaki
- Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai-mura, Japan
| | - Tohru Kobayashi
- Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai-mura, Japan
| | - Keiichi Yokoyama
- Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai-mura, Japan
| | - Tsuyoshi Yaita
- Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai-mura, Japan
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Suzuki T, Ogata T, Tanaka M, Kobayashi T, Shiwaku H, Yaita T, Narita H. Unique Anion-exchange Properties of 3,3'-Diaminobenzidine Resulting in High Selectivity for Rhodium(III) over Palladium(II) and Platinum(IV) in a Concentrated Hydrochloric Acid Solution. ANAL SCI 2019; 35:1353-1360. [PMID: 31447471 DOI: 10.2116/analsci.19p204] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The effective recovery of Rh(III) from mixtures also containing Pd(II) and Pt(IV) is one of the most difficult tasks in platinum group metal refining. Adding 3,3'-diaminobenzidine (DAB) to 7 and 10 M HCl aqueous solutions containing Rh(III), Pd(II), and Pt(IV) chlorido species affords the effective separation of Rh(III) from Pd(II) and Pt(IV) through a process where Rh(III) becomes sequestered into solid phases composed of DAB. The stoichiometry and inner coordination sphere of the metal in Rh-DAB complexes were determined by estimating the Rh(III), H+, and Cl- concentrations in the solid phase and X-ray absorption fine structure measurements to clarify the mechanism of DAB selectivity for Rh(III). These results indicate that the Rh-DAB reaction in a concentrated HCl solution occurs in two steps: (1) the precipitation of DAB trihydrochloride salts, where DAB's amino groups are protonated and (2) anion exchange of the trihydrochloride salts for chloride ions with [RhCl6]3-, which is the predominant species in a concentrated HCl solution. By contrast, ion-pair complexes with [PdCl4]2- and [PtCl6]2- were not observed in DAB phases. The significantly lower affinity of the DAB trihydro cation for [PtCl6]2- and [PdCl4]2- than for [RhCl6]3- in 7 and 10 M HCl solutions accounts for the effective separation of Rh(III) from Pd(II) and Pt(IV).
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Affiliation(s)
- Tomoya Suzuki
- Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Takeshi Ogata
- Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Mikiya Tanaka
- Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Tohru Kobayashi
- Materials Sciences Research Center, Japan Atomic Energy Agency (JAEA)
| | - Hideaki Shiwaku
- Materials Sciences Research Center, Japan Atomic Energy Agency (JAEA)
| | - Tsuyoshi Yaita
- Materials Sciences Research Center, Japan Atomic Energy Agency (JAEA)
| | - Hirokazu Narita
- Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
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12
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Narita H, Nicolson RM, Motokawa R, Ito F, Morisaku K, Goto M, Tanaka M, Heller WT, Shiwaku H, Yaita T, Gordon RJ, Love JB, Tasker PA, Schofield ER, Antonio MR, Morrison CA. Proton Chelating Ligands Drive Improved Chemical Separations for Rhodium. Inorg Chem 2019; 58:8720-8734. [DOI: 10.1021/acs.inorgchem.9b01136] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Hirokazu Narita
- Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
| | - Rebecca M. Nicolson
- EaStCHEM School of Chemistry, University of Edinburgh, The King’s Buildings, David Brewster Road, Edinburgh EH9 3FJ, U.K
| | - Ryuhei Motokawa
- Materials Sciences Research Center, Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - Fumiyuki Ito
- Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
| | - Kazuko Morisaku
- Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
| | - Midori Goto
- Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
| | - Mikiya Tanaka
- Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
| | - William T. Heller
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Hideaki Shiwaku
- Materials Sciences Research Center, Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - Tsuyoshi Yaita
- Materials Sciences Research Center, Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - Ross J. Gordon
- Johnson Matthey Technology Centre, Sonning Common, Reading RG4 9NH, U.K
| | - Jason B. Love
- EaStCHEM School of Chemistry, University of Edinburgh, The King’s Buildings, David Brewster Road, Edinburgh EH9 3FJ, U.K
| | - Peter A. Tasker
- EaStCHEM School of Chemistry, University of Edinburgh, The King’s Buildings, David Brewster Road, Edinburgh EH9 3FJ, U.K
| | - Emma R. Schofield
- Johnson Matthey Technology Centre, Sonning Common, Reading RG4 9NH, U.K
| | - Mark R. Antonio
- Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, United States
| | - Carole A. Morrison
- EaStCHEM School of Chemistry, University of Edinburgh, The King’s Buildings, David Brewster Road, Edinburgh EH9 3FJ, U.K
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13
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Simonnet M, Miyazaki Y, Suzuki S, Yaita T. Quantitative Analysis of Cs Extraction by Some Dialkoxycalix[4]Arene-Crown-6 Extractants. Solvent Extraction and Ion Exchange 2019. [DOI: 10.1080/07366299.2019.1575002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Marie Simonnet
- Actinide Chemistry Group, Materials Sciences Research Center, Japan Atomic Energy Agency, Naka-Gun, Japan
| | - Yuji Miyazaki
- Actinide Chemistry Group, Materials Sciences Research Center, Japan Atomic Energy Agency, Naka-Gun, Japan
| | - Shinichi Suzuki
- Actinide Chemistry Group, Materials Sciences Research Center, Japan Atomic Energy Agency, Naka-Gun, Japan
| | - Tsuyoshi Yaita
- Actinide Chemistry Group, Materials Sciences Research Center, Japan Atomic Energy Agency, Naka-Gun, Japan
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14
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Kobayashi T, Akutsu K, Nakase M, Suzuki S, Shiwaku H, Yaita T. Complexation properties and structural character of lanthanides complexes of O,N-hetero donor ligand BIZA. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1575880] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- T. Kobayashi
- Materials Sciences Research Center, Japan Atomic Energy Agency, Sayo-cho, Sayo-gun, Hyogo, Japan
| | - K. Akutsu
- Research Center for Neutron Science and Technology, Comprehensive Research Organization for Science and Society, Tokai, Ibaraki, Japan
| | - M. Nakase
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, Meguro-ku, Tokyo, Japan
| | - S. Suzuki
- Materials Sciences Research Center, Japan Atomic Energy Agency, Sayo-cho, Sayo-gun, Hyogo, Japan
| | - H. Shiwaku
- Materials Sciences Research Center, Japan Atomic Energy Agency, Sayo-cho, Sayo-gun, Hyogo, Japan
| | - T. Yaita
- Materials Sciences Research Center, Japan Atomic Energy Agency, Sayo-cho, Sayo-gun, Hyogo, Japan
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15
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Nakase M, Kobayashi T, Shiwaku H, Suzuki S, Grimes TS, Mincher BJ, Yaita T. Relationship Between Structure and Coordination Strength of N and N,O-Hybrid Donor Ligands with Trivalent Lanthanides. Solvent Extraction and Ion Exchange 2019. [DOI: 10.1080/07366299.2018.1532137] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Masahiko Nakase
- Aqueous Separation and Radiochemistry Department, Idaho National Laboratory, Idaho Falls, Idaho, USA
- Actinide Chemistry Group, Japan Atomic Energy Agency, Hyogo, Japan
| | - Tohru Kobayashi
- Actinide Chemistry Group, Japan Atomic Energy Agency, Hyogo, Japan
| | - Hideaki Shiwaku
- Actinide Chemistry Group, Japan Atomic Energy Agency, Hyogo, Japan
| | - Shinichi Suzuki
- Actinide Chemistry Group, Japan Atomic Energy Agency, Hyogo, Japan
| | - Travis S. Grimes
- Aqueous Separation and Radiochemistry Department, Idaho National Laboratory, Idaho Falls, Idaho, USA
| | - Bruce J. Mincher
- Aqueous Separation and Radiochemistry Department, Idaho National Laboratory, Idaho Falls, Idaho, USA
| | - Tsuyoshi Yaita
- Actinide Chemistry Group, Japan Atomic Energy Agency, Hyogo, Japan
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16
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Honda M, Goto T, Sakanaka Y, Yaita T, Suzuki S. Electrochemical Cs removal and crystal formation from Fukushima weathered biotite in molten NaCl-CaCl<sub>2</sub>. AIMS Electronics and Electrical Engineering 2019. [DOI: 10.3934/electreng.2019.2.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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17
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Ashida S, Tanaka N, Ito Y, Matsuoka M, Hashimoto T, Okano K, Miyazaki Y, Kobayashi T, Yaita T, Mori A. Nosyl (2-Nitrobenzenesulfonyl) Annulation Strategy toward Winding Vine-Shaped Bithiophenes. J Org Chem 2018; 83:14797-14801. [PMID: 30424603 DOI: 10.1021/acs.joc.8b02382] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Winding vine-shaped bithiophene was synthesized through the nosyl (2-nitrobenzenesulfonyl) cyclization protocol. The reaction of bithiophene bearing bromomethyl groups at the 3,3'-positions with nosylated 1,2-ethylenediamine in the presence of potassium carbonate afforded the annulated product in excellent yield. The obtained bithiophene was found to contain a 10-membered ring, which was confirmed by X-ray analysis. The related nosyldiamine bearing a tri- or tetramethylene group also reacted in a similar manner, affording an 11- or 12-membered macrocycle, respectively.
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Affiliation(s)
- Shiomi Ashida
- Department of Chemical Science and Engineering , Kobe University , 1-1 Rokkodai, Nada , Kobe 657-8501 , Japan
| | - Naoki Tanaka
- Department of Chemical Science and Engineering , Kobe University , 1-1 Rokkodai, Nada , Kobe 657-8501 , Japan
| | - Yukiko Ito
- Department of Chemical Science and Engineering , Kobe University , 1-1 Rokkodai, Nada , Kobe 657-8501 , Japan
| | - Mitsuru Matsuoka
- Department of Chemical Science and Engineering , Kobe University , 1-1 Rokkodai, Nada , Kobe 657-8501 , Japan
| | - Takayoshi Hashimoto
- Research Facility Center for Science and Technology , Kobe University , 1-1 Rokkodai, Nada , Kobe 657-8501 , Japan
| | - Kentaro Okano
- Department of Chemical Science and Engineering , Kobe University , 1-1 Rokkodai, Nada , Kobe 657-8501 , Japan
| | - Yuji Miyazaki
- Japan Atomic Agency , 1-1-1, Kouto, Sayo-cho , Sayo-gun , Hyogo 679-5148 , Japan
| | - Tohru Kobayashi
- Japan Atomic Agency , 1-1-1, Kouto, Sayo-cho , Sayo-gun , Hyogo 679-5148 , Japan
| | - Tsuyoshi Yaita
- Japan Atomic Agency , 1-1-1, Kouto, Sayo-cho , Sayo-gun , Hyogo 679-5148 , Japan
| | - Atsunori Mori
- Department of Chemical Science and Engineering , Kobe University , 1-1 Rokkodai, Nada , Kobe 657-8501 , Japan
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18
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Ambai H, Nishizuka Y, Sano Y, Uchida N, Iijima S, Shiwaku H, Yaita T. Effect of seawater components on corrosion behavior of SUS316L in nitric acid solution containing metal ions. J NUCL SCI TECHNOL 2018. [DOI: 10.1080/00223131.2018.1552212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
| | | | - Yuichi Sano
- Japan Atomic Energy Agency, Tokai-mura, Japan
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19
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Mukai H, Tamura K, Kikuchi R, Takahashi Y, Yaita T, Kogure T. Cesium desorption behavior of weathered biotite in Fukushima considering the actual radioactive contamination level of soils. J Environ Radioact 2018; 190-191:81-88. [PMID: 29775841 DOI: 10.1016/j.jenvrad.2018.05.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 04/11/2018] [Accepted: 05/05/2018] [Indexed: 06/08/2023]
Abstract
For the better understanding of radioactive contamination in Fukushima Prefecture at present and in future, Cs desorption experiments have been conducted mainly using weathered biotite (WB) collected from Fukushima Prefecture and considering the actual contamination level (∼10-10 wt%) of radiocesium in Fukushima Prefecture. In the experiments, 137Cs sorbed to WB by immersing in 137Cs solution for one day was mostly desorbed by solutions of 1 M NaNO3, 1 M LiNO3, 10-1 M HCl, and 10-1 M HNO3, although it was barely desorbed by 1 M KNO3, 1 M CsNO3, 1 M NH4NO3, and natural seawater. X-ray diffraction analysis of WB after immersing in these solutions suggested that the collapse of the hydrated interlayers in WB suppressed the desorption of Cs. On the other hand, 137Cs was barely desorbed from WB even by the treatments with solutions of NaNO3 and LiNO3 if the duration for the sorption was longer than approximately two weeks, as well as radioactive WB collected from actual contaminated soils in Fukushima Prefecture. This result implies that Cs sorbed in WB became more strongly fixed with time. Probably removal of radiocesium sorbed in weathered granitic soil at Fukushima Prefecture is difficult by any electrolyte solutions, as more than seven years have passed since the accident.
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Affiliation(s)
- Hiroki Mukai
- Department of Earth and Planetary Science, Graduate School of Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8567, Japan.
| | - Kenji Tamura
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Ryosuke Kikuchi
- Department of Earth and Planetary Science, Graduate School of Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yoshio Takahashi
- Department of Earth and Planetary Science, Graduate School of Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Tsuyoshi Yaita
- Quantum Beam Science Center and Fukushima Environmental Safety Center, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Toshihiro Kogure
- Department of Earth and Planetary Science, Graduate School of Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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20
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Tsukada C, Yoshida H, Ogawa S, Yoshigoe A, Yagi S, Yaita T. Surface chemical states of gold nanoparticles prepared using the solution-plasma method in a CsCl aqueous solution. SURF INTERFACE ANAL 2018. [DOI: 10.1002/sia.6555] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chie Tsukada
- Materials Sciences Research Center; Japan Atomic Energy Agency; 1-1-1, Kouto, Sayo-cho Sayo-gun Hyogo 679-5148 Japan
- Synchrotron Radiation Research Center; Nagoya University; Furo-cho, Chikusa-ku Nagoya-shi Aichi 464-8603 Japan
| | - Hikaru Yoshida
- Materials Sciences Research Center; Japan Atomic Energy Agency; 1-1-1, Kouto, Sayo-cho Sayo-gun Hyogo 679-5148 Japan
- Toyama Co., Ltd; 3816-1, Kishi, Ashigarakami-gun Yamakita-machi Kanagawa 258-0112 Japan
| | - Satoshi Ogawa
- Graduate School of Engineering; Nagoya University; Furo-cho, Chikusa-ku Nagoya-shi Aichi 464-8603 Japan
| | - Akitaka Yoshigoe
- Materials Sciences Research Center; Japan Atomic Energy Agency; 1-1-1, Kouto, Sayo-cho Sayo-gun Hyogo 679-5148 Japan
| | - Shinya Yagi
- Graduate School of Engineering; Nagoya University; Furo-cho, Chikusa-ku Nagoya-shi Aichi 464-8603 Japan
- Institute of Materials and Systems for Sustainability; Nagoya University, Furo-cho, Chikusa-ku Nagoya-shi Aichi 464-8603 Japan
| | - Tsuyoshi Yaita
- Materials Sciences Research Center; Japan Atomic Energy Agency; 1-1-1, Kouto, Sayo-cho Sayo-gun Hyogo 679-5148 Japan
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21
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Francisco PCM, Sato T, Otake T, Kasama T, Suzuki S, Shiwaku H, Yaita T. Mechanisms of Se(IV) Co-precipitation with Ferrihydrite at Acidic and Alkaline Conditions and Its Behavior during Aging. Environ Sci Technol 2018; 52:4817-4826. [PMID: 29589745 DOI: 10.1021/acs.est.8b00462] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Understanding the form of Se(IV) co-precipitated with ferrihydrite and its subsequent behavior during phase transformation is critical to predicting its long-term fate in a range of natural and engineered settings. In this work, Se(IV)-ferrihydrite co-precipitates formed at different pH were characterized with chemical extraction, transmission electron microscopy (TEM), and X-ray absorption spectroscopy (XAS) to determine how Se(IV) is associated with ferrihydrite. Results show that despite efficient removal, the mode and stability of Se(IV) retention in the co-precipitates varied with pH. At pH 5, Se(IV) was removed dominantly as a ferric selenite-like phase intimately associated with ferrihydrite, while at pH 10, it was mostly present as a surface species on ferrihydrite. Similarly, the behavior of Se(IV) and the extent of its retention during phase transformation varied with pH. At pH 5, Se(IV) remained completely associated with the solid phase despite the phase change, whereas it was partially released back into solution at pH 10. Regardless of this difference in behavior, TEM and XAS results show that Se(IV) was retained within the crystalline post-aging products and possibly occluded in nanopore and defect structures. These results demonstrate a potential long-term immobilization pathway for Se(IV) even after phase transformation. This work presents one of the first direct insights on Se(IV) co-precipitation and its behavior in response to iron phase transformations.
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Affiliation(s)
- Paul Clarence M Francisco
- Environmental Geology Laboratory, Graduate School of Engineering , Hokkaido University , Kita 13 Nishi 8 , Sapporo , Hokkaido 060-8628 , Japan
| | - Tsutomu Sato
- Environmental Geology Laboratory, Graduate School of Engineering , Hokkaido University , Kita 13 Nishi 8 , Sapporo , Hokkaido 060-8628 , Japan
| | - Tsubasa Otake
- Environmental Geology Laboratory, Graduate School of Engineering , Hokkaido University , Kita 13 Nishi 8 , Sapporo , Hokkaido 060-8628 , Japan
| | - Takeshi Kasama
- Center for Electron Nanoscopy , Technical University of Denmark , DK-2800 Kongens Lyngby , Denmark
| | - Shinichi Suzuki
- Actinide Chemistry Group, Materials Sciences Research Center , Japan Atomic Energy Agency , 2-4 Shirakata , Tokai-mura , Ibaraki 319-1195 , Japan
| | - Hideaki Shiwaku
- Actinide Chemistry Group, Materials Sciences Research Center , Japan Atomic Energy Agency , 2-4 Shirakata , Tokai-mura , Ibaraki 319-1195 , Japan
| | - Tsuyoshi Yaita
- Actinide Chemistry Group, Materials Sciences Research Center , Japan Atomic Energy Agency , 2-4 Shirakata , Tokai-mura , Ibaraki 319-1195 , Japan
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Honda M, Shimoyama I, Kogure T, Baba Y, Suzuki S, Yaita T. Proposed Cesium-free Mineralization Method for Soil Decontamination: Demonstration of Cesium Removal from Weathered Biotite. ACS Omega 2017; 2:8678-8681. [PMID: 31457398 PMCID: PMC6645549 DOI: 10.1021/acsomega.7b01304] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 11/14/2017] [Indexed: 06/10/2023]
Abstract
The removal possibility of sorbed Cs from weathered biotite (WB), which is considered a major Cs adsorbent in the soil of Fukushima, has been investigated by the addition of an NaCl-CaCl2 mixed salt powder with a 1:1 ratio of Na and Ca and subsequent heat treatment under a reduced pressure of 14 Pa. X-ray fluorescence analysis was used to determine the Cs removal rate at elevated temperatures. The structural changes and new phases formed were determined using powder X-ray diffraction as well as electron diffraction and X-ray microanalysis in a transmission electron microscope. We found that Cs was completely removed from the specimen heated at 700 °C, where WB completely decomposed and augite was formed. On the basis of this finding, we propose the Cs-free mineralization method as a new soil-decontamination process in which Cs minerals are transformed by heating with certain additives into minerals that cannot incorporate Cs.
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Affiliation(s)
- Mitsunori Honda
- Materials
Sciences Research Center (MSRC), Japan Atomic
Energy Agency (JAEA), 2-4, Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - Iwao Shimoyama
- Materials
Sciences Research Center (MSRC), Japan Atomic
Energy Agency (JAEA), 2-4, Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
- Fukushima
Environmental Safety Center, Japan Atomic
Energy Agency (JAEA), 6-6 Sakae-machi, Fukushima-shi, Fukushima 960-8031, Japan
| | - Toshihiro Kogure
- Department
of Earth and Planetary Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yuji Baba
- Materials
Sciences Research Center (MSRC), Japan Atomic
Energy Agency (JAEA), 2-4, Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - Shinichi Suzuki
- Materials
Sciences Research Center (MSRC), Japan Atomic
Energy Agency (JAEA), 2-4, Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
- Fukushima
Environmental Safety Center, Japan Atomic
Energy Agency (JAEA), 6-6 Sakae-machi, Fukushima-shi, Fukushima 960-8031, Japan
| | - Tsuyoshi Yaita
- Materials
Sciences Research Center (MSRC), Japan Atomic
Energy Agency (JAEA), 2-4, Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
- Fukushima
Environmental Safety Center, Japan Atomic
Energy Agency (JAEA), 6-6 Sakae-machi, Fukushima-shi, Fukushima 960-8031, Japan
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23
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Narita H, Maeda M, Tokoro C, Suzuki T, Tanaka M, Motokawa R, Shiwaku H, Yaita T. Comparison of the Extractabilities of Tetrachloro- and Tetrabromopalladate(II) Ions with a Thiodiglycolamide Compound. ANAL SCI 2017; 33:1305-1309. [PMID: 29129872 DOI: 10.2116/analsci.33.1305] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Using N,N,N',N'-tetra-2-ethylhexyl-thiodiglycolamide (TEHTDGA) in n-dodecane as the extractant, we compared the percentages of Pd(II) extracted from HCl and HBr solutions, and analyzed the structures of the Pd(II)-extractant complexes. For comparison, similar experiments were performed with di-n-hexyl sulfide (DHS), a well-known sulfide-type extractant. TEHTDGA extracted Pd(II) from both HCl and HBr solutions much faster than DHS. The Pd(II)/(TEHTDGA or DHS) stoichiometry in the organic phase was 1:2. For TEHTDGA, the extractability of Pd(II) from HBr solution was inferior to that from HCl solution, whereas the opposite was true for DHS. However, FT-IR spectroscopy and EXAFS measurements indicated that the inner-sphere structure of Pd(II) in the TEHTDGA complex was almost the same as that in the DHS system: in both cases, two of the halide ions in the tetrachloro- or tetrabromopalladate(II) ion were replaced by the sulfur atoms of two extractant molecules.
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Affiliation(s)
- Hirokazu Narita
- Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Motoki Maeda
- Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST).,Department of Earth Science, Resources and Environmental Engineering, Faculty of Creative Science and Engineering, Waseda University
| | - Chiharu Tokoro
- Department of Earth Science, Resources and Environmental Engineering, Faculty of Creative Science and Engineering, Waseda University
| | - Tomoya Suzuki
- Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Mikiya Tanaka
- Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Ryuhei Motokawa
- Materials Sciences Research Center, Japan Atomic Energy Agency (JAEA)
| | - Hideaki Shiwaku
- Materials Sciences Research Center, Japan Atomic Energy Agency (JAEA)
| | - Tsuyoshi Yaita
- Materials Sciences Research Center, Japan Atomic Energy Agency (JAEA)
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Hisamatsu S, Suzuki S, Kohmoto S, Kishikawa K, Yamamoto Y, Motokawa R, Yaita T. A chemiluminescence sensor with signal amplification based on a self-immolative reaction for the detection of fluoride ion at low concentrations. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.05.084] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Hase H, Nishiuchi T, Sato T, Otake T, Yaita T, Kobayashi T, Yoneda T. A novel method for remediation of nickel containing wastewater at neutral conditions. J Hazard Mater 2017; 329:49-56. [PMID: 28122277 DOI: 10.1016/j.jhazmat.2017.01.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 12/18/2016] [Accepted: 01/11/2017] [Indexed: 06/06/2023]
Abstract
Heavy metals contained in wastewater are generally removed by adding antalkaline to increase the pH, and Ni is commonly precipitated as Ni-hydroxides at pH 10. However, a more sustainable remediation method of treatment at neutral conditions would be attractive due to the high cost of chemical reagents and inefficient treatment at present. Based on natural attenuation, the method of adding Al ions has been used in wastewater treatment to precipitate layered double hydroxides (LDH). Here, we investigated the use of Al ion addition in the Ni containing wastewater treatment, experimentally and thermodynamically. By co-precipitation experiments adding Al ions to Ni-containing water, Ni was selectively incorporated into the structure of LDH, and the removal efficiency of Ni was close to 100% even in pH 7 and 8 samples (lower pH than conventional methods) with initial Ni concentrations of 200-10,000mg/L. Geochemical modeling results replicate the experimental results well when the Al/Ni ratio of LDH is assumed to be 0.33. This model makes it possible to estimate the amount of Al ions and additive agents necessary for use in treatment of wastewater containing different Ni concentrations.
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Affiliation(s)
- Haruko Hase
- Graduate School of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
| | - Toru Nishiuchi
- Graduate School of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
| | - Tsutomu Sato
- Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan.
| | - Tsubasa Otake
- Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
| | - Tsuyoshi Yaita
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Tohru Kobayashi
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Tetsuro Yoneda
- Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
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26
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Maeda M, Narita H, Tokoro C, Tanaka M, Motokawa R, Shiwaku H, Yaita T. Selective extraction of Pt(IV) over Fe(III) from HCl with an amide-containing tertiary amine compound. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2017.01.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Honda M, Okamoto Y, Shimoyama I, Shiwaku H, Suzuki S, Yaita T. Mechanism of Cs Removal from Fukushima Weathered Biotite by Heat Treatment with a NaCl-CaCl 2 Mixed Salt. ACS Omega 2017; 2:721-727. [PMID: 31457466 PMCID: PMC6641079 DOI: 10.1021/acsomega.6b00372] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 01/19/2017] [Indexed: 05/31/2023]
Abstract
An in situ extended X-ray absorption fine structure (in situ EXAFS) spectroscopic analysis at high temperature was conducted to investigate the mechanism of Cs removal from weathered biotite (WB) from Fukushima, induced by heating with a mixed salt of NaCl and CaCl2. This indicated that most Cs remained in WB during heating at 200-700 °C. In addition, the in situ EXAFS spectra gradually changed on heating with the mixed salt and a completely different spectrum was observed for the sample after cooling from 700 °C to room temperature (RT). Ex situ EXAFS measurements and X-ray fluorescence analyses were also conducted on samples after heat treatment and removal of the mixed salt to clarify the temperature dependence of the Cs removal ratio. On the basis of the results of radial structure function analysis obtained from in situ EXAFS, we concluded that almost all of the Cs was removed from WB by heating at 700 °C with the mixed salt, and that Cs formed Cs-Cl bonds after cooling to RT from 700 °C. In contrast, although more than half of the Cs present was removed from WB by heat treatment at 500 °C, most Cs was surrounded by silica tetrahedrons, maintained by Cs-O bonds. On the basis of these results, different Cs removal processes are suggested for the high-temperature (600-700 °C) and low-temperature (400-500 °C) regions.
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Affiliation(s)
- Mitsunori Honda
- Materials
Sciences Research Center (MSRC), Japan Atomic
Energy Agency (JAEA), 2-4, Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - Yoshihiro Okamoto
- Materials
Sciences Research Center (MSRC), Japan Atomic
Energy Agency (JAEA), 2-4, Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - Iwao Shimoyama
- Materials
Sciences Research Center (MSRC), Japan Atomic
Energy Agency (JAEA), 2-4, Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - Hideaki Shiwaku
- Materials
Sciences Research Center (MSRC), Japan Atomic
Energy Agency (JAEA), 2-4, Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - Shinichi Suzuki
- Materials
Sciences Research Center (MSRC), Japan Atomic
Energy Agency (JAEA), 2-4, Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
- Fukushima
Environmental Safety Center, Japan Atomic
Energy Agency (JAEA), 6-6 Sakae-machi, Fukushima-shi, Fukushima 960-8031, Japan
| | - Tsuyoshi Yaita
- Materials
Sciences Research Center (MSRC), Japan Atomic
Energy Agency (JAEA), 2-4, Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
- Fukushima
Environmental Safety Center, Japan Atomic
Energy Agency (JAEA), 6-6 Sakae-machi, Fukushima-shi, Fukushima 960-8031, Japan
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28
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Toyomori Y, Tsuji S, Mitsuda S, Okayama Y, Ashida S, Mori A, Kobayashi T, Miyazaki Y, Yaita T, Arae S, Takahashi T, Ogasawara M. Bithiophene with Winding Vine-shaped Molecular Asymmetry. Preparation, Structural Characterization, and Enantioselective Synthesis. BCSJ 2016. [DOI: 10.1246/bcsj.20160265] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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29
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Kogure T, Yamaguchi N, Segawa H, Mukai H, Motai S, Akiyama-Hasegawa K, Mitome M, Hara T, Yaita T. Constituent elements and their distribution in the radioactive Cs-bearing silicate glass microparticles released from Fukushima nuclear plant. Microscopy (Oxf) 2016; 65:451-459. [DOI: 10.1093/jmicro/dfw030] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 07/06/2016] [Indexed: 11/12/2022] Open
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30
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Demir S, Brune N, Van Humbeck J, Mason JA, Plakhova T, Wang S, Tian G, Minasian SG, Tyliszczak T, Yaita T, Kobayashi T, Kalmykov SN, Shiwaku H, Shuh DK, Long JR. Extraction of Lanthanide and Actinide Ions from Aqueous Mixtures Using a Carboxylic Acid-Functionalized Porous Aromatic Framework. ACS Cent Sci 2016; 2:253-65. [PMID: 27163056 PMCID: PMC4850516 DOI: 10.1021/acscentsci.6b00066] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Indexed: 05/04/2023]
Abstract
Porous aromatic frameworks (PAFs) incorporating a high concentration of acid functional groups possess characteristics that are promising for use in separating lanthanide and actinide metal ions, as required in the treatment of radioactive waste. These materials have been shown to be indefinitely stable to concentrated acids and bases, potentially allowing for multiple adsorption/stripping cycles. Additionally, the PAFs combine exceptional features from MOFs and inorganic/activated carbons giving rise to tunable pore surfaces and maximum chemical stability. Herein, we present a study of the adsorption of selected metal ions, Sr(2+), Fe(3+), Nd(3+), and Am(3+), from aqueous solutions employing a carbon-based porous aromatic framework, BPP-7 (Berkeley Porous Polymer-7). This material displays high metal loading capacities together with excellent adsorption selectivity for neodymium over strontium based on Langmuir adsorption isotherms and ideal adsorbed solution theory (IAST) calculations. Based in part upon X-ray absorption spectroscopy studies, the stronger adsorption of neodymium is attributed to multiple metal ion and binding site interactions resulting from the densely functionalized and highly interpenetrated structure of BPP-7. Recyclability and combustibility experiments demonstrate that multiple adsorption/stripping cycles can be completed with minimal degradation of the polymer adsorption capacity.
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Affiliation(s)
- Selvan Demir
- Department of Chemistry and Department of
Chemical and Biomolecular Engineering, University
of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Materials Sciences
Division,
and Advanced Light
Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Nicholas
K. Brune
- Department of Chemistry and Department of
Chemical and Biomolecular Engineering, University
of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Materials Sciences
Division,
and Advanced Light
Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Jeffrey
F. Van Humbeck
- Department of Chemistry and Department of
Chemical and Biomolecular Engineering, University
of California, Berkeley, California 94720, United States
| | - Jarad A. Mason
- Department of Chemistry and Department of
Chemical and Biomolecular Engineering, University
of California, Berkeley, California 94720, United States
| | - Tatiana
V. Plakhova
- Chemical Sciences Division, Materials Sciences
Division,
and Advanced Light
Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Chemistry
Department, Lomonosov Moscow State University, Leninskie Gory, Moscow 11991, Russia
| | - Shuao Wang
- Department of Chemistry and Department of
Chemical and Biomolecular Engineering, University
of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Materials Sciences
Division,
and Advanced Light
Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Guoxin Tian
- Chemical Sciences Division, Materials Sciences
Division,
and Advanced Light
Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Radiochemistry
Department, China Institute of Atomic Energy, Beijing 102413, China
| | - Stefan G. Minasian
- Chemical Sciences Division, Materials Sciences
Division,
and Advanced Light
Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Tolek Tyliszczak
- Chemical Sciences Division, Materials Sciences
Division,
and Advanced Light
Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Tsuyoshi Yaita
- Actinide
Chemistry Group, Energy and Environment Science Division, Quantum
Beam Science Center, Japan Atomic Energy
Agency, 1-1-1 Kouto,
Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Tohru Kobayashi
- Actinide
Chemistry Group, Energy and Environment Science Division, Quantum
Beam Science Center, Japan Atomic Energy
Agency, 1-1-1 Kouto,
Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Stepan N. Kalmykov
- Chemistry
Department, Lomonosov Moscow State University, Leninskie Gory, Moscow 11991, Russia
| | - Hideaki Shiwaku
- Actinide
Chemistry Group, Energy and Environment Science Division, Quantum
Beam Science Center, Japan Atomic Energy
Agency, 1-1-1 Kouto,
Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - David K. Shuh
- Chemical Sciences Division, Materials Sciences
Division,
and Advanced Light
Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Jeffrey R. Long
- Department of Chemistry and Department of
Chemical and Biomolecular Engineering, University
of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Materials Sciences
Division,
and Advanced Light
Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- E-mail:
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31
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Awual MR, Yaita T, Miyazaki Y, Matsumura D, Shiwaku H, Taguchi T. A Reliable Hybrid Adsorbent for Efficient Radioactive Cesium Accumulation from Contaminated Wastewater. Sci Rep 2016; 6:19937. [PMID: 26818070 PMCID: PMC4730148 DOI: 10.1038/srep19937] [Citation(s) in RCA: 140] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 12/21/2015] [Indexed: 11/15/2022] Open
Abstract
Cesium (Cs) removal from nuclear liquid wastewater has become an emerging issue for safeguarding public health after the accident at the Fukushima Daiichi Nuclear Power Plant. A novel macrocyclic ligand of o-benzo-p-xylyl-22-crown-6-ether (OBPX22C6) was developed and successfully immobilized onto mesoporous silica for the preparation of hybrid adsorbent. The benzene ring π electron is the part of crown ether of OBPX22C6 for easy orientation of the macrocyclic compound for making the π electron donation with Cs complexation. The potential and feasibility of the hybrid adsorbent as being Cs selective was evaluated in terms of sensitivity, selectivity and reusability. The results clarified that the Cs removal process was rapid and reached saturation within a short time. Considering the effect of competitive ions, sodium (Na) did not markedly affect the Cs adsorption whereas potassium (K) was slightly affected due to the similar ionic radii. However, the oxygen in long ethylene glycol chain in OBPX22C6 was expected to show strong coordination, including Cs-π interaction with Cs even in the presence of the high amount of K and Na. Due to its high selectivity and reusability, significant volume reduction is expected as this promising hybrid adsorbent is used for Cs removal in Fukushima wastewater.
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Affiliation(s)
- Md Rabiul Awual
- Actinide Chemistry Group, Japan Atomic Energy Agency (SPring-8), Hyogo 679-5148, Japan
| | - Tsuyoshi Yaita
- Actinide Chemistry Group, Japan Atomic Energy Agency (SPring-8), Hyogo 679-5148, Japan
| | - Yuji Miyazaki
- Actinide Chemistry Group, Japan Atomic Energy Agency (SPring-8), Hyogo 679-5148, Japan
| | - Daiju Matsumura
- Environment and Materials Dynamics Research Group, Japan Atomic Energy Agency (SPring-8), Hyogo 679-5148, Japan
| | - Hideaki Shiwaku
- Actinide Chemistry Group, Japan Atomic Energy Agency (SPring-8), Hyogo 679-5148, Japan
| | - Tomitsugu Taguchi
- Laser Processing Research Group, Quantum Beam Science Center, Japan Atomic Energy Agency (JAEA), Tokai-mura, Ibaraki-ken 319-1195, Japan
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32
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Miyazaki Y, Suzuki S, Kobayashi T, Yaita T, Inaba Y, Takeshita K, Mori A. Synthetic Design of TPEN Derivatives for Selective Extraction of Trivalent Minor Actinides against Lanthanides. CHEM LETT 2015. [DOI: 10.1246/cl.150861] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yuji Miyazaki
- Quantum Beam Science Directorate, Japan Atomic Energy Agency
| | - Shinichi Suzuki
- Quantum Beam Science Directorate, Japan Atomic Energy Agency
| | - Toru Kobayashi
- Quantum Beam Science Directorate, Japan Atomic Energy Agency
| | - Tsuyoshi Yaita
- Quantum Beam Science Directorate, Japan Atomic Energy Agency
| | - Yusuke Inaba
- Research Laboratory of Nuclear Reactor, Tokyo Institute of Technology
| | - Kenji Takeshita
- Research Laboratory of Nuclear Reactor, Tokyo Institute of Technology
| | - Atsunori Mori
- Department of Chemical Science and Engineering, Kobe University
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33
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Motokawa R, Kobayashi T, Endo H, Ikeda T, Yaita T, Suzuki S, Narita H, Akutsu K, Heller WT. Small-angle neutron scattering study of specific interaction and coordination structure formed by mono-acetyl-substituted dibenzo-20-crown-6-ether and cesium ions. J NUCL SCI TECHNOL 2015. [DOI: 10.1080/00223131.2015.1102100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Ryuhei Motokawa
- Quantum Beam Science Center (QuBS), Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - Tohru Kobayashi
- Quantum Beam Science Center (QuBS), Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - Hitoshi Endo
- Neutron Science Division, Institute of Material Science, High Energy Accelerator Research Organization, 203-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
- Department of Material Structure Science, The Graduate University for Advanced Studies (SOKENDAI), 203-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
| | - Takashi Ikeda
- Quantum Beam Science Center (QuBS), Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - Tsuyoshi Yaita
- Quantum Beam Science Center (QuBS), Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - Shinichi Suzuki
- Quantum Beam Science Center (QuBS), Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - Hirokazu Narita
- Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
| | - Kazuhiro Akutsu
- Quantum Beam Science Center (QuBS), Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - William T. Heller
- Biology and Soft Matter Division, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN 37831, USA
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34
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Ikeda T, Suzuki S, Yaita T. Characterization of Adsorbed Alkali Metal Ions in 2:1 Type Clay Minerals from First-Principles Metadynamics. J Phys Chem A 2015; 119:8369-75. [DOI: 10.1021/acs.jpca.5b05934] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Shinichi Suzuki
- Fukushima
Environmental Safety Center, Japan Atomic Energy Agency (JAEA), 6-6 Sakae-machi, Fukushima-shi, Fukushima 960-8031, Japan
| | - Tsuyoshi Yaita
- Fukushima
Environmental Safety Center, Japan Atomic Energy Agency (JAEA), 6-6 Sakae-machi, Fukushima-shi, Fukushima 960-8031, Japan
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35
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Awual MR, Yaita T, Suzuki S, Shiwaku H. Ultimate selenium(IV) monitoring and removal from water using a new class of organic ligand based composite adsorbent. J Hazard Mater 2015; 291:111-9. [PMID: 25771216 DOI: 10.1016/j.jhazmat.2015.02.066] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Revised: 02/18/2015] [Accepted: 02/25/2015] [Indexed: 05/26/2023]
Abstract
This work reports the selenium (Se(IV)) detection and removal from water by ligand functionalized organic-inorganic based novel composite adsorbent. The composite adsorbent was prepared by direct immobilization of N,N'-di(3-carboxysalicylidene)-3,4-diamino-5-hydroxypyrazole onto the mesoporous silica monolith. The adsorbent exhibited distinct color change in the presence of various concentrations of Se(IV). This was characterized by UV-vis spectroscopy, and the color change was observed by naked-eye observation. The detection limit was determined to be 1.14 μg/L. The effect of solution pH, interferential metal ions, contact time, initial Se(IV) concentration, and adsorbent regeneration were evaluated. The maximum sorption capacity was determined based on the initial concentration. The data fitted well to the Langmuir isotherm model, and the maximum Se(IV) sorption capacity was 111.12 mg/g. The presence of diverse competing ions did not affect the Se(IV) sorption capacity, and the adsorbent had almost no sorption capacity for these coexisting ions, which suggests the high selectivity to Se(IV) ions. The adsorbed Se(IV) was eluted with suitable eluent (0.10 M NaOH) and simultaneously regenerated into the initial form for the next operation. The excellent reusability of the adsorbent was justified after eight consecutive sorption-elution-regeneration cycles. The proposed adsorbent is cost-effective and environmentally friendly and a potential candidate for treatment of water containing Se(IV).
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Affiliation(s)
- Md Rabiul Awual
- Actinide Coordination Chemistry Group, Quantum Beam Science Center, Japan Atomic Energy Agency (SPring-8), Hyogo 679-5148, Japan.
| | - Tsuyoshi Yaita
- Actinide Coordination Chemistry Group, Quantum Beam Science Center, Japan Atomic Energy Agency (SPring-8), Hyogo 679-5148, Japan
| | - Shinichi Suzuki
- Actinide Coordination Chemistry Group, Quantum Beam Science Center, Japan Atomic Energy Agency (SPring-8), Hyogo 679-5148, Japan
| | - Hideaki Shiwaku
- Actinide Coordination Chemistry Group, Quantum Beam Science Center, Japan Atomic Energy Agency (SPring-8), Hyogo 679-5148, Japan
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36
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Nakase M, Takeshita K, Kobayashi T, Shiwaku H, Yaita T. Structure and complexation studies on 2,2′-bipyridyl and trivalent lanthanides. SEP SCI TECHNOL 2015. [DOI: 10.1080/01496395.2015.1038393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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37
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Motokawa R, Endo H, Yokoyama S, Ogawa H, Kobayashi T, Suzuki S, Yaita T. Mesoscopic structures of vermiculite and weathered biotite clays in suspension with and without cesium ions. Langmuir 2014; 30:15127-15134. [PMID: 25426676 DOI: 10.1021/la503992p] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The effect of cesium (Cs) adsorption on the mesoscopic structure of the clay minerals vermiculite and weathered biotite (WB) in suspensions was elucidated by small-angle X-ray scattering (SAXS). The clay minerals form multilayered structures, and the Cs cations (Cs(+)) are strongly adsorbed in the interlayer space of the soil clays, in particular vermiculite and WB. SAXS was used to monitor the relationship between Cs(+) adsorption at the clay interlayers and the structural changes at length scales from 1 to 1000 Å. The variation in the distance between the neighboring clay sheets and the spatial arrangement of the clay sheets with and without Cs(+) were clarified. Our quantitative analyses revealed that the number of stacked layers of pure vermiculite was decreased by Cs(+) addition, whereas that of WB increased. Moreover, the average distance between the neighboring layers of vermiculite in suspension was larger than that of WB, which reflects the different conditions of Cs(+) intercalation. These findings provide fundamental insights that are important for predicting the environmental fate of radioactive Cs in contaminated regions and for developing methods for extracting Cs from soil.
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Affiliation(s)
- Ryuhei Motokawa
- Actinide Coordination Chemistry Group, Quantum Beam Science Center (QuBS), Japan Atomic Energy Agency (JAEA) , Tokai, Ibaraki 319-1195, Japan
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38
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Mukai H, Hatta T, Kitazawa H, Yamada H, Yaita T, Kogure T. Speciation of radioactive soil particles in the Fukushima contaminated area by IP autoradiography and microanalyses. Environ Sci Technol 2014; 48:13053-13059. [PMID: 25343443 DOI: 10.1021/es502849e] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Radioactive soil particles several tens of micrometers in size were collected from litter soil in the radiation contaminated area by the Fukushima nuclear plant accident and characterized using electron and X-ray microanalyses. The radioactive particles were discriminated by autoradiography using imaging plates (IP) on which microgrids were formed by laser ablation in order to find the particles under microscopy. Fifty radioactive particles were identified and classified into three types from their morphology and chemical composition, namely: (1) aggregates of clay minerals, (2) organic matter containing clay mineral particulates, and (3) weathered biotite originating from local granite. With respect to the second type, dissolution of the organic matter did not reduce the radiation, suggesting that the radionuclides were also fixed by the clay minerals. The weathered biotite grains have a plate-like shape with well-developed cleavages inside the grains, and kaolin group minerals and goethite filling the cleavage spaces. The reduction of the radiation intensity was measured before and after the trimming of the plate edges using a focused ion beam (FIB), to examine whether radioactive cesium primarily sorbed at frayed edges. The radiation was attenuated in proportion to the volume decrease by the edge trimming, implying that radioactive cesium was sorbed uniformly in the porous weathered biotite.
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Affiliation(s)
- Hiroki Mukai
- Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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39
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Motokawa R, Endo H, Yokoyama S, Nishitsuji S, Kobayashi T, Suzuki S, Yaita T. Collective structural changes in vermiculite clay suspensions induced by cesium ions. Sci Rep 2014; 4:6585. [PMID: 25300233 PMCID: PMC4192615 DOI: 10.1038/srep06585] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Accepted: 09/17/2014] [Indexed: 11/26/2022] Open
Abstract
Following the Fukushima Daiichi nuclear disaster in 2011, Cs radioisotopes have been dispersed over a wide area. Most of the Cs has remained on the surface of the soil because Cs(+) is strongly adsorbed in the interlayer spaces of soil clays, particularly vermiculite. We have investigated the microscopic structure of an aqueous suspension of vermiculite clay over a wide length scale (1-1000 Å) by small-angle X-ray scattering. We determined the effect of the adsorption behavior of Cs(+) on the structural changes in the clay. It was found that the abruption of the clay sheets was induced by the localization of Cs(+) at the interlayer. This work provides important information for predicting the environmental fate of radioactive Cs in polluted areas, and for developing methods to extract Cs from the soil and reduce radioactivity.
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Affiliation(s)
- Ryuhei Motokawa
- Actinide Coordination Chemistry Group, Quantum Beam Science Center (QuBS), Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - Hitoshi Endo
- Neutron Science Division, Institute of Material Structure Science, High Energy Accelerator Research Organization, 203-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
- Department of Material Structure Science, The Graduate University for Advanced Studies (SOKENDAI), 203-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
| | - Shingo Yokoyama
- Central Research Institute of the Electric Power Industry, Abiko, Chiba 270-1194, Japan
| | - Shotaro Nishitsuji
- Graduate School of Science and Engineering, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
| | - Tohru Kobayashi
- Actinide Coordination Chemistry Group, Quantum Beam Science Center (QuBS), Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - Shinichi Suzuki
- Actinide Coordination Chemistry Group, Quantum Beam Science Center (QuBS), Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - Tsuyoshi Yaita
- Actinide Coordination Chemistry Group, Quantum Beam Science Center (QuBS), Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
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Awual MR, Shenashen M, Jyo A, Shiwaku H, Yaita T. Preparing of novel fibrous ligand exchange adsorbent for rapid column-mode trace phosphate removal from water. J IND ENG CHEM 2014. [DOI: 10.1016/j.jiec.2013.11.016] [Citation(s) in RCA: 125] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Awual MR, Yaita T, Taguchi T, Shiwaku H, Suzuki S, Okamoto Y. Selective cesium removal from radioactive liquid waste by crown ether immobilized new class conjugate adsorbent. J Hazard Mater 2014; 278:227-235. [PMID: 24981675 DOI: 10.1016/j.jhazmat.2014.06.011] [Citation(s) in RCA: 164] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 06/06/2014] [Accepted: 06/09/2014] [Indexed: 06/03/2023]
Abstract
Conjugate materials can provide chemical functionality, enabling an assembly of the ligand complexation ability to metal ions that are important for applications, such as separation and removal devices. In this study, we developed ligand immobilized conjugate adsorbent for selective cesium (Cs) removal from wastewater. The adsorbent was synthesized by direct immobilization of dibenzo-24-crown-8 ether onto inorganic mesoporous silica. The effective parameters such as solution pH, contact time, initial Cs concentration and ionic strength of Na and K ion concentrations were evaluated and optimized systematically. This adsorbent was exhibited the high surface area-to-volume ratios and uniformly shaped pores in case cavities, and its active sites kept open functionality to taking up Cs. The obtained results revealed that adsorbent had higher selectivity toward Cs even in the presence of a high concentration of Na and K and this is probably due to the Cs-π interaction of the benzene ring. The proposed adsorbent was successfully applied for radioactive Cs removal to be used as the potential candidate in Fukushima nuclear wastewater treatment. The adsorbed Cs was eluted with suitable eluent and simultaneously regenerated into the initial form for the next removal operation after rinsing with water. The adsorbent retained functionality despite several cycles during sorption-elution-regeneration operations.
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Affiliation(s)
- Md Rabiul Awual
- Actinide Coordination Chemistry Group, Quantum Beam Science Centre (QuBS), Japan Atomic Energy Agency (SPring-8), Hyogo 679-5148, Japan.
| | - Tsuyoshi Yaita
- Actinide Coordination Chemistry Group, Quantum Beam Science Centre (QuBS), Japan Atomic Energy Agency (SPring-8), Hyogo 679-5148, Japan
| | - Tomitsugu Taguchi
- Nano-Structure Synthesis Research Group, Quantum Beam Science Centre (QuBS), Japan Atomic Energy Agency, Tokai-mura, Ibaraki-ken 319-1195, Japan
| | - Hideaki Shiwaku
- Actinide Coordination Chemistry Group, Quantum Beam Science Centre (QuBS), Japan Atomic Energy Agency (SPring-8), Hyogo 679-5148, Japan
| | - Shinichi Suzuki
- Actinide Coordination Chemistry Group, Quantum Beam Science Centre (QuBS), Japan Atomic Energy Agency (SPring-8), Hyogo 679-5148, Japan
| | - Yoshihiro Okamoto
- Actinide Coordination Chemistry Group, Quantum Beam Science Centre (QuBS), Japan Atomic Energy Agency (SPring-8), Hyogo 679-5148, Japan
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Abstract
The local structure of molten CdCl2 was investigated by X-ray absorption fine structure (XAFS) and X-ray diffraction(XRD) analyses. The nearest Cd2+-Cl− distance decreases from 2.61 Å in the room temperature solid state to 2.47 - 2.50 Å in the molten state. The coordination number decreases from 6 in the solid to 4 in the melt. The obtained structural parameters from the XAFS and the XRD analyses suggest that a tetrahedral coordination (CdCl4)2− is predominant in molten CdCl2. The XAFS result of a molten 50%CdCl2-KCl mixture shows that the 4-fold (CdCl4)2− structure holds also in the mixture
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Affiliation(s)
- Y. Okamoto
- Department of Materials Science, Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
- Syncrotron Radiation Research Center, Japan Atomic Energy Research Institute, Kouto, Mikazuki-cho, Sayo-gun, Hyogo-ken 6795143 Japan
| | - H. Shiwaku
- Syncrotron Radiation Research Center, Japan Atomic Energy Research Institute, Kouto, Mikazuki-cho, Sayo-gun, Hyogo-ken 6795143 Japan
| | - T. Yaita
- Department of Materials Science, Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
- Syncrotron Radiation Research Center, Japan Atomic Energy Research Institute, Kouto, Mikazuki-cho, Sayo-gun, Hyogo-ken 6795143 Japan
| | - S. Suzuki
- Department of Materials Science, Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - K. Minato
- Department of Materials Science, Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - H. Tanida
- Japan Synchrotron Radiation Research Institute, Kouto, Mikazuki-cho, Sayo-gun, Hyogo-ken 6795198 Japan
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Sasaki K, Suzuki T, Arai T, Takao K, Suzuki S, Yaita T, Ikeda Y. Uranyl Species in 1-Ethyl-3-methylimidazolium Nitrate ([EMI][NO3]) Solution of [EMI]2[UO2(NO3)4]: First Spectrophotometric Evidence for Existence of [UO2(NO3)4]2−. CHEM LETT 2014. [DOI: 10.1246/cl.131183] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | - Tomoya Suzuki
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
| | | | - Koichiro Takao
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
| | | | | | - Yasuhisa Ikeda
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
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Narita H, Morisaku K, Tamura K, Tanaka M, Shiwaku H, Okamoto Y, Suzuki S, Yaita T. Extraction Properties of Palladium(II) in HCl Solution with Sulfide-Containing Monoamide Compounds. Ind Eng Chem Res 2014. [DOI: 10.1021/ie404363b] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hirokazu Narita
- Research
Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
| | - Kazuko Morisaku
- Research
Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
| | - Ken Tamura
- Research
Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
| | - Mikiya Tanaka
- Research
Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
| | - Hideaki Shiwaku
- Quantum
Beam Science Directorate, Japan Atomic Energy Agency (JAEA), 1-1-1
Koto, Sayo, Hyogo 679-5148, Japan
| | - Yoshihiro Okamoto
- Quantum
Beam Science Directorate, Japan Atomic Energy Agency (JAEA), 1-1-1
Koto, Sayo, Hyogo 679-5148, Japan
| | - Shinichi Suzuki
- Quantum
Beam Science Directorate, Japan Atomic Energy Agency (JAEA), 1-1-1
Koto, Sayo, Hyogo 679-5148, Japan
| | - Tsuyoshi Yaita
- Quantum
Beam Science Directorate, Japan Atomic Energy Agency (JAEA), 1-1-1
Koto, Sayo, Hyogo 679-5148, Japan
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Narita H, Tanaka M, Shiwaku H, Okamoto Y, Suzuki S, Ikeda-Ohno A, Yaita T. Structural properties of the inner coordination sphere of indium chloride complexes in organic and aqueous solutions. Dalton Trans 2014; 43:1630-5. [DOI: 10.1039/c3dt52474d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Awual MR, Khaleque MA, Ferdows M, Chowdhury AS, Yaita T. Rapid recognition and recovery of gold(III) with functional ligand immobilized novel mesoporous adsorbent. Microchem J 2013. [DOI: 10.1016/j.microc.2013.07.010] [Citation(s) in RCA: 107] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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49
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Awual MR, Kobayashi T, Miyazaki Y, Motokawa R, Shiwaku H, Suzuki S, Okamoto Y, Yaita T. Selective lanthanide sorption and mechanism using novel hybrid Lewis base (N-methyl-N-phenyl-1,10-phenanthroline-2-carboxamide) ligand modified adsorbent. J Hazard Mater 2013; 252-253:313-320. [PMID: 23548921 DOI: 10.1016/j.jhazmat.2013.03.020] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 02/18/2013] [Accepted: 03/10/2013] [Indexed: 06/02/2023]
Abstract
This study aims to develop a highly selective Lewis base adsorbent to investigate the selective sorption and recovery of Eu(III) and Sm(III) from wastewater. The oxygen and nitrogen donor atoms containing Lewis base N-methyl-N-phenyl-1,10-phenanthroline-2-carboxamide (MePhPTA) ligand was synthesized and subsequently an adsorbent was prepared by direct immobilization onto mesoporous silica. Determined maximum adsorption capacities were 125.63 and 124.38 mg/g for Eu(III) and Sm(III), respectively. Experiments with mixed-cations solutions showed that the sequence of preferential adsorption was Eu(III)>Sm(III). The lanthanide sorption by hybrid Lewis base adsorbent (HyLBA) was not adversely affected by the presence of sodium, potassium, calcium, magnesium, chloride, sulfate and nitrate ions due to strong affinity between hard Lewis acid lanthanide and hard Lewis base adsorbent. The crystallography for the Sm-MePhPTA complex suggested that MePhPTA was strongly coordinated to Sm(III) with oxygen and nitrogen by forming a stable complex with two 5-membered rings. The data clarified that bond lengths between Sm(III) and amide oxygen (2.475Å) were shorter than SmN (2.662Å) in phenanthroline moiety indicating strong oxygen driven HyLBA. The results suggested that HyLBA has a good prospect of promising applications for separation/sorption of lanthanide ions from effluents.
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Affiliation(s)
- Md Rabiul Awual
- Actinide Coordination Chemistry Group, Quantum Beam Science Directorate, Japan Atomic Energy Agency, SPring-8, Hyogo 679-5148, Japan.
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Ikeda-Ohno A, Hennig C, Weiss S, Yaita T, Bernhard G. Hydrolysis of tetravalent cerium for a simple route to nanocrystalline cerium dioxide: an in situ spectroscopic study of nanocrystal evolution. Chemistry 2013; 19:7348-60. [PMID: 23630017 DOI: 10.1002/chem.201204101] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 03/01/2013] [Indexed: 11/07/2022]
Abstract
Despite the rapid developments in recent nanocrystal research and their expanding applications, the evolution mechanism of nanocrystals remains veiled for the most part due to the lack of appropriate analytical techniques. Here we demonstrate one promising multi-spectroscopic approach for the in situ investigation of nanocrystal evolution. That is, the formation of nanocrystalline cerium dioxide (NC-CeO2) has been probed by dynamic light scattering (DLS), X-ray absorption spectroscopy (XAS) and high-energy X-ray scattering (HEXS). The obtained results indicate that the fine colloidal particles of NC-CeO2 are formed in an acidic aqueous solution simply through the hydrolysis of the initial precursor of small oligomer Ce(IV) species. This information on how NC-CeO2 evolves is fundamental to simplifying and alleviating the synthetic strategy for NC-CeO2 production.
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Affiliation(s)
- Atsushi Ikeda-Ohno
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, P.O.Box 510119, 01314 Dresden, Germany.
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